Macromatic Protects Motor From Premature Failure
Macromatic redesigns DIN-rail Mounted Three-Phase Monitor Relay to protect equipment from voltage faults. Macromatic redesigned the PMD Series, a Three-Phase Monitor Relay for DIN-rail mounting, which provides protection for motors…
New Liquid Level Control Relays
The new LCP Series Liquid Level Control Relays are now available to compete with offerings from SSAC, Crouzet NCC. Liquid Level Control Relays detect control levels of conductive liquids such as fresh…
The Only Time Delay Relay You Really Need
The TE-8816U is the one time delay relay that should be on your shelves. Here’s why: 12-240VAC/DC voltage ranges. The most commonly used controls voltages are 120VAC and 24VDC. …
Reduce Panel Costs with 17.5mm Relays
OEMs building electrical control panels are always looking for ways to reduce their costs. One method is to utilize smaller components, which could result in using smaller enclosures, which are…
Reduce panel costs with 17.5mm relays
OEMs building electrical control panels are always looking for ways to reduce their costs. One method is to utilize smaller components, which could result in using smaller enclosures, which are…
Competitive Cross Reference Updated with Expanded Listings for MPE & Flygt Products
Macromatic has expanded our online competitive cross reference to add more products from Motor Protection Electronics (MPE) & Flygt (Xylem). Now, you can find even more Macromatic equivalents for MPE and Flygt products such…
Macromatic Offers Reliable, Accurate Percentage Timers
Macromatic PTA Series Percentage Timer ar ideally suited for applications where an adjustable repeating ON time of a fixed length cycle is required. These relays provide an economical way to deliver…
Macromatic offers reliable, accurate Percentage Timers
Macromatic is pleased to introduce the new PTA series Percentage Timer. These Percentage Timers are ideally suited for applications where an adjustable repeating ON time of a fixed length cycle…
Macromatic’s THL-8 Series – Solid State, Digital-set, Encapsulated Time Delay Relays
Macromatic’s new THL-8 Series Time Delay Relays offer an easy and accurate method to select any time delay. The THL-8 Series is a cost-effective, compact, encapsulated enclosure with a universal…
Macromatic’s THL-8 Series: Solid State, Digital-set Time Delay Relays
Macromatic’s THL-8 Series Time Delay Relays offer an easy and accurate method to select any time delay. The THL-8 Series is a cost-effective, compact, encapsulated enclosure with a universal input…
Watch how Macromatic’s Three-Phase Monitor Relays Protect Motors
Macromatic Three-Phase Monitor Relays, or Protective Relays, provide protection against premature equipment failure caused by voltage faults on three-phase systems. Watch the video to learn more. Depending on the unit…
Macromatic Hires Additional Product Design Engineer
As part of Macromatic's commitment to providing quality, cost-effective solutions to ensure your success, Macromatic has added an engineer to the design team. Rick Behnke has joined Macromatic Industrial Controls…
Macromatic Welcomes Mark Butterfield as Regional Sales Manager
Macromatic is pleased to announce Mark Butterfield has joined the organization as Eastern Regional Sales Manager. Mark has 34 years of sales experience in industrial manufacturing and a wealth of…
Macromatic Offers Isolated Alarm Circuit Output with Extra Contact with 8 Pin Plug-In Socket
Macromatic now offers a redesigned PMPU-FA8X plug-in three-phase monitor relay that is similar to our other products, but with one big difference: it has an extra SPNO output contact in…
Macromatic’s Over Temperature & Seal Leakage Relays
Macromatic’s TCF Series relays protect submersible pump motors against over temperature and seal leakage. The TCF Over Temperature Seal Leakage Relays are ideal for the water/wastewater market where deadfront-mounting on…
Macromatic’s Time Delay Relays with Universal Voltage Reduces Inventory
Macromatic's classic TR-6 Series Time Delay Relays offers the flexibility of an individual or multi-function time delay. The relay's universal input voltage and wide programmable time range can replace hundreds of…
Replacements for Crouzet (Syr-Line) LIRT, PNR, PNRU, PJR, DIRT, DWR Products
Macromatic offers direct drop-in replacements to these Crouzet products Having trouble getting products from Crouzet (Syr-Line)? Long waits for the Crouzet PNR & PNRU level control relays, PJR Series alternating relays, DWR…
New Switch on Current Sensor Relay
Due to the obsolescence of a switch, Macromatic updated the switch component on the CAH Series Current Sensor Relays effective March 20, 2017. All other functionality remains the same. Since…
Inner Door-Mounted Alternating Relays from Macromatic
All plug-in alternating relays have an optional top-mounted switch that can lock the unit to LOAD 1 or LOAD 2 to help balance the usage of both pumps or compressors.…
New Macromatic Over Temp/Seal Leak Relay Works with Ebara Submersible Pumps
Macromatic's TCF-E Series Over Temperature & Seal Leakage Relays are a drop-in equivalent for the PMR4 Pump Monitoring Relays from Ebara©. Both products work with Ebara-brand submersible pumps using a float type leakage detector. Both are designed…
Industry’s First Deadfront-Door Mounted Seal Leakage Relay By Macromatic
Macromatic now offers the industry's first deadfront-door mounted seal leakage-only relay, the SFF Series.A seal leakage relay is designed to monitor the shaft seals of submersible pumps for leakage. Until now,…
Advantages of Macromatic Three-Phase Monitor Relays with Remote Manual Reset
As standard, most three-phase monitor relays have automatic reset. When a fault that has caused the unit to trip is removed, the relay will automatically reset to the normal mode.…
Advantages of Macromatic Three-Phase Monitor Relays with Remote Manual Reset
As standard, most three-phase monitor relays have automatic reset. When a fault that has caused the unit to trip is removed, the relay will automatically reset to the normal mode. …
Macromatic Money-Saving Replacement for Flygt MiniCAS Relay
The TCF-F Series Over Temperature & Seal Leakage Relays are a direct replacement for both the MiniCAS from Xylem-Flygt and the PMR2 from MPE. These relays are designed specifically for monitoring over…
Macromatic Offers Money-Saving Replacement for Flygt MiniCAS Relay
Macromatic’s TCF-F Series Over Temperature Seal Leakage Relays are a direct replacement for both the MiniCAS from Xylem-Flygt and the PMR2 from MPE. These relays are designed specifically for monitoring over temperature and seal…
Door-Mounted Relays Protect Submersible Pumps
Macromatic’s new TCF Series relays protect a variety of submersible pump motors against over temperature and seal leakage. The TCF Series Over Temperature Seal Leakage Relays are ideal for the water/wastewater market…
Macromatic’s CAP Series Current Sensing Relays Are Direct Replacement for Crouzet
Macromatic’s CAP Series Current Sensing Relays are a direct replacement for both the LIRT and DIRT Series from Crouzet. Macromatic's CAP Series is designed to monitor AC or DC current…
Macromatic Reintroduces the COKP Series Plug-in Current Sensing Relay
At the end of 2015, Macromatic announced the obsolescence of our complete line of plug-in current sensing relays due to a component becoming obsolete with no available replacement. The CMP, CMKP,…
Macromatic earns Fastest Growing Firms award from Milwaukee Business Journal.
Macromatic earns Fastest Growing Firms award from Milwaukee Business Journal. TYPE OF BUSINESS: Designs and manufactures industrial relays to control electrical processes and protect equipment from damaging or hazardous fault…
DPDT 240V Voltage Monitor Relay
For many years, Macromatic has been offering a SPDT 240V voltage monitor relay: the VMP240A. And for many applications, a SPDT output is sufficient. But what about applications that require…
New Sales & Marketing Team Members Expand Customer Outreach Programs
Tim Burns and Bruce Peight joined Macromatic in January 2019. Tim has been named National Sales and Marketing Manager reporting directly to Steve Sundlov, Macromatic General Manager. He has over…
Macromatic Announces Transition to New Owners
Posted: 5/2/19 Macromatic has announced the sale of the privately-owned company to a management group headed by new President Steve Sundlov. The transition is effective May 1, 2019, according to…
Macromatic Earns Fastest Growing Firms Award
Posted: 7/22/19 Management Team Receives Award at Luncheon at the Pfister Hotel Macromatic was recognized as a Fastest Growing Firm by the Milwaukee Business Journal. Firms with the highest pecentage of…
Macromatic Names New Regional Sales Manager for Canada
Posted: 1/31/20 Rich Gibson has joined Macromatic as the new Regional Sales Manager for Canada. Rich will report to Tim Burns, Vice President – Sales and Marketing. Rich has over…
Macromatic Industrial Controls Remains Open in Wisconsin
Posted: 3/24/20 The Governor of Wisconsin, Tony Evers, has issued emergency order #12 – Safer at Home Order. This order requires all individuals living in the state of Wisconsin to…
Macromatic Recognized as Outstanding Supplier by Grainger
Macromatic Industrial Controls, Inc. has received a Partners in Performance Award for 2019 from senior leadership at Grainger, the broad line supplier of maintenance, repair, and operating products. Macromatic, a…
Our 45th Anniversary: A Message to our Employees and Customers
May marks the 45th anniversary of Macromatic Industrial Controls, Inc. It's also been one year since our management team purchased Macromatic. From its beginnings as an independent business in 1975,…
Triplex Pump Control Using Cost-saving Alternating Relays
Eliminate the PLC and Save with Macromatic ATP Series Relays TRIPLEXOR RELAYS SAVE PANEL SPACE, REDUCE LABOR, WITH NO PROGRAMING. Macromatic specific-purpose Triplexor relays are ready to go right out…
Macromatic Names Christopher Curtis as Non-Executive Chairman
Macromatic has named Christopher B. Curtis as Non-Executive Chairman of the Wisconsin-based manufacturer of electronic control and monitoring products. Chris is recognized as a top global leader in technology and…
General Purpose Relays – Simplified Installation and Wiring for Reduced Costs
Macromatic General Purpose Relays have a small profile and give you great value. They are available in three configurations with specifications to meet your immediate requirements. Best of all, they…
Small Profile Relays Feature Extras That Make Them a True Value
Economical Macromatic GP Relays feature extras that make them a true value: Color-coded push-to-test buttons - orange for AC and blue for DC voltage coils - that can be locked…
Protect Against Premature Failure with Compact Phase Monitor Relays
Compact Phase Monitor Relays provide protection against premature equipment failure caused by voltage faults on three-phase systems. These narrow relays save space and reduce installation time and costs. The 17.5…
Use Our Cross Reference to Find Replacement Relays
Macromatic’s extensive online “Competitive Cross Reference” lists over 10,000 relays cross-referenced to Macromatic models. Type in a part number or series number and find the replacement for your unavailable or…
New 4-pole GB Series General Purpose Relays Now Available
Macromatic's expanded line of General Purpose Relays now includes 4-pole blade terminal relays to meet customer requirements. These new GB Series Relays are in stock and ready to ship for your high-density applications.…
PBDU Phase Monitor Relays: Save Space, Quick Installation for Reduced Costs.
PBDU Series Phase Monitor Relays protect equipment from damage due to voltage faults. These narrow relays save panel space, reduce installation time and cut costs. The 17.5 mm wide enclosures mount on 35 mm…
True OFF Time Delay Relay Operation
The Macromatic TR-606 True Off Time Delay is designed to replace the functionality of pneumatic time delay relays which are very large, expensive and not very accurate. Unlike standard electronic Off Delay time…
New TE-6 Series Single Function Time Delay Relays
New single-function time delay relays simplify set-up and troubleshooting. These relays are used for applications where timing function does not change. All functions initiated by the control voltage can use…
Use Our Competitive Cross Reference to Find Replacement Relays
Macromatic’s extensive online “Competitive Cross Reference” lists over 10,000 relays cross-referenced to Macromatic models. Type in a part number or series number and find the replacement for your unavailable or…
Employee of the Month – March & April 2022
Congratulations to Employees of the Month: Bob Martin, Product Marking Specialist and Jordan Mathiebe, Manufacturing Lead. Bob and Jordan are important members of the team that have earned Macromatic its…
New Over-Temperature & Seal Leakage Relays Operate at 24V AC and 24V DC Voltages.
New 24V AC/DC Over-Temperature and Seal Leakage Relays handle both AC and DC voltage. Stock just one model for production and service versatility. SF Series and TC Series Relays protect…
New Website Features Thousands of Cross-referenced Relays!
Macromatic’s new website makes it easy to find the information and products you need. See our comprehensive Competitor Cross Reference with thousands of Macromatic replacements for hard-to-find or discontinued relays. This…
New Website Downloads Center with Complete Product Information
Product support information includes a Product Selection Guide with complete Model Codes, detailed product Catalogs with complete specifications, and Fact Sheets for understanding the benefits of using Macromatic products in…
Employee of the Month – April & May 2022
Congratulations to Employees of the Month Dave Dillett and Tina Schroeder. Both work in Cell Assembly. Dave and Tina are important members of the team that have earned Macromatic its reputation…
Seal Leakage and Over-Temp Relays for 24V AC/DC Operation!
Our customers asked for 24V DC Seal Leakage and Over-Temperature Relays. Introducing Macromatic SF and TC Series relays for dual 24V AC/DC control voltages! Protect your submersible pumps with these…
Rapid Cycling of Control Switch Damages Large Pumps or Compressor Motors
Issue: How do I prevent a Bouncing Control Switch Due to Splashing Water from Rapidly Energizing One Load and Then the Other? Solution/Resolution: In Figure A, a single Control Switch…
Interactive Competitive Cross-Reference
Did you know . . . The Macromatic Competitive Cross Reference on our website now has over 7,500 competitor Catalog Numbers with the Macromatic equivalent product? It is interactive: Enter all or…
Troubleshooting for a Phase Reversal (Phase Sequence) Problem
Issue: I have purchased one of your three phase monitor relays and have connected it per the diagram on the unit. However, I cannot get the unit to operate–it just…
Undervoltage Settings on Universal Voltage Three Phase Monitor Relays
Issue: Your new PMPU three-phase monitor relay can work on any voltage between 190 & 500V. It also includes an adjustable under-voltage trip setting of 80-95% and a fixed overvoltage…
Maximum Voltage Ratings of Phase Monitor Relays
Issue: What is the maximum voltage that your phase monitors can handle? What about the units that offer overvoltage protection? Solution/Resolution: Use the table below to determine the maximum continuous…
Phase Monitor Relays & Different Frequencies
Issue: Do your Phase Monitor Relays work at both 60hz as well as 50hz? What is the tolerance at either value? Solution/Resolution: All Macromatic plug-in Three-Phase Monitor Relays manufactured after…
Undervoltage Settings on Universal Voltage Three Phase Monitor Relays
Issue: Your new PMPU three-phase monitor relay can work on any voltage between 190 & 500V. It also includes an adjustable undervoltage trip setting of 80-95% and a fixed overvoltage…
What is True RMS? And Why is it Important in a Phase Monitor?
RMS stands for Root Mean Square. True RMS is a mathematical formula that is used to calculate the effective value of an AC wave shape. To understand why this is…
TAA2U and TAD1U Start, Inhibit and Reset Inputs
The Macromatic TAA2U and TAD1U offer a wide variety of functionality and application versatility by offering START, INHIBIT and RESET inputs. The information below explains the functionality of these 3 circuits. TAA2UTAD1U START INPUT…
Protection on a Corner Grounded Delta System
Issue: Can I use a phase monitor for protection on a corner grounded delta system? Answer: Yes, Macromatic phase monitor relays provide the same reliable protection on corner grounded delta…
New 575V AC Three-Phase Monitor Relays
Macromatic announces an exciting addition to its plug-in series of Three-Phase Monitor Relays. To provide solutions for a greater variety of voltage applications, four new 575V AC Three-Phase Monitor Relays…
Macromatic’s Time Delay Relay Function Guide
Important questions to ask. Understanding the differences between all the functions available in time delay relays can sometimes be a daunting task. When designing circuits using time delay relays, several…
Panel Space-Savers from Macromatic
Macromatic TE-881 Series Macromatic introduced their new IEC-style modular products. The 17.5mm width is ideal for saving space in compact applications and smaller panels. These products snap-mount to a 35mm…
Estimating Contact Life of Products with Specific Loads
Issue: How many switching cycles will the contacts on your products operate with a specific load? Solution/Resolution: The electrical life of the relay is directly related to the load it…
Three-Phase Monitor Relays & Phase Converters
Issue: Are there any issues with using a three-phase monitor relay on a system that is using a phase converter to get a third leg on a 240V system? Solution/Resolution:…
What is Overvoltage? How Can I Protect My Motor?
Overvoltage occurs when the supply voltage rises above the rated voltage of the equipment or motor. The overvoltage can cause excessive current to flow as well as creating excessive voltage…
What Is Phase Reversal? How Can I Protect My Equipment?
Phase Reversal is when the phase sequence of a three-phase system is incorrect, the connected three-phase motors and other rotating equipment runs in the opposite direction. In many cases, this…
600V-Rated Sockets for Use with Phase Monitor Relays
Issue: What 8 pin socket do I use with any of your plug-in Phase Monitor Relays on applications greater than 300V? According to the specifications I have seen in many…
Using Current Transformers with Current Sensing Relays
Issue: How do I use a current transformer with one of your current sensing relays? Solution/Resolution: The Macromatic line of current sensing relays come with a variety of current ranges.…
Using Current Transformers with Current Sensing Relays
Issue: How do I use a current transformer with one of your current sensing relays? Solution/Resolution: The Macromatic line of current sensing relays come with a variety of current ranges.…
Minimum Contact Rating of Macromatic Products
Issue: I see most of your products have a maximum output rating of 10A @ 240V. What is the minimum contact rating of these products? Solution/Resolution: The minimum contact rating…
Time Delay Relays with Fixed Time Delay
Issue: I would like to get a time delay relay with a fixed time delay vs. adjustable to both make it easy to set up & to avoid anyone from…
Remote Adjustable Time Delay
Issue: How can I set the time delay remotely, either adjustable or fixed? Solution/Resolution: There may be an application requiring the setting of the time delay "remotely" or at some…
MIN-MAX Settings on Time Delay Relays
Issue: On a time delay relay with a range of 0.3-30 seconds, how come I get less than a 0.3 second setting at the “MIN” setting and/or more than a…
How to Connect a Three-Phase Monitor Relay
Issue: I have never connected a three-phase monitor relay. Do you have a typical wiring connection? Solution/Resolution: While each individual application may have its own requirements, this diagram showing a…
How to Connect a Three-Phase Monitor Relay
Issue: I have never connected a three-phase monitor relay. Do you have a typical wiring connection? Solution/Resolution: While each individual application may have its own requirements, this diagram showing a…
Trouble-Shooting Tips for Plug-In Products
We frequently receive technical support calls from installers that can't get their plug-in product to function correctly. This is understandable because unless you work with plug-in products on a regular…
Using Liquid Level Control Relays
Liquid Level Control Relays detect & control levels of conductive liquids such as fresh water, seawater, sewage & coffee (see table below for other liquids). They provide a low voltage signal…
Linear Dial Settings on Time Delay Relays
Issue: Is the dial setting on your time delay relays linear? How do I find 10 seconds with a range of 1-30 seconds? Solution/Resolution: Since most time delay relays use…
Connection of Pump Seal Failure (Seal Leak) Relays in Submersible Pump Applications
Issue: I need to know how to install and connect the wiring for my seal leak probe to a Macromatic Seal Failure Relay. Solution/Resolution: Making the right connections: Seal leak…
Using the 70166 Hold-Down Spring
Issue: How do you use the 70166 hold-down (tie-down) spring on the Macromatic 70169-D or 70170-D sockets when mounting the socket with two screws on a panel? What about when…
DC Input Voltages on Time Delay Relays
Issue: I have applied 24VDC input voltage to one of your time delay relays, but the product still doesn’t operate. I know the voltage supply is good. Solution/Resolution: Any of…
Troubleshooting a Unit with a Control Switch Trigger
Issue: I am using one of your products that has the control switch trigger between Pins 5 & 6, and the unit is not operating. What could possibly be wrong?…
ROHS vs ROHS 2
What is the difference between Directive 2002/95/EC (RoHS) and Directive 2011/65/EU (RoHS 2 or RoHS recast)? Directive 2002/95/EC was issued in 2002 by the European Commission to reduce or eliminate…
What size connectors will work with Macromatic sockets?
Issue: I want to use ring, fork, spade or other terminal connectors with Macromatic sockets. What sizes will work? Solution: Our 8 pin (70169-D) & 11 pin (70170-D) sockets can…
How to Apply Pilot Duty Ratings
Issue: How to Apply Pilot Duty Ratings Solution/Resolution: B300, C300 PILOT DUTY RATING TABLE – AC 50 AND 60 HERTZ NEMA DesignationThermal Current [A]Maximum Current [A]Volt-Amp Rating 120V240V480V600V MakeBreakMakeBreakMakeBreakMakeBreakMakeBreak(1)B300(2)5 30 3(3)15 1.50 — — — — 3600 360C3002.5151.57.50.75————1800180 Note 1 – Code…
What are Pilot Duty Ratings and which Macromatic products have them?
Issue: What are Pilot Duty Ratings and which Macromatic products have them? Solution/Resolution: A pilot duty rating is a contact rating intended for contacts that control the coil of another…
Control Switch Jumped on TD-7 Digital-Set Time Delay Relay
Issue: What happens if I put a jumper across the control switch terminals (Pins 5 & 6) on the TD-7 Digital-Set time delay relay, but I have the function set to…
Non-Standard Control (Trigger) Switch Pin Configurations
Issue: I have a time delay relay with a trigger switch that is not connected to pins 5 & 6 as shown in your catalog. It looks like my product…
High-Leg Delta System Protection
Issue: Can I use a phase monitor for protection on a high-leg delta system? Answer: Yes, Macromatic phase monitor relays provide the same reliable protection on high-leg delta systems. A…
Time Delay Relay Functions w/ Different ON & OFF Times
Issue: I have noticed that most time delay relays with functions such as Repeat Cycle, Delayed Interval ON/OFF Delay have as standard the same range available for both ON OFF…
What is a True Off Delay Timer?
Issue: What is the difference between an "Off Delay" a "True Off Delay" time delay relay, and when is the True Off Delay function used? Solution/Resolution: Pneumatic time delay relays…
Can Macromatic’s Three-Phase Monitor Relays Be Used with Open Delta Systems?
Issue: Can Macromatic's Three-Phase Monitor Relays be used with open delta systems? Answer: Yes, by following a few simple guidelines. Here is an open delta schematic: The phase monitor needs…
Contact Resistance of Macromatic Products
Issue: What is the contact resistance of your products? Solution/Resolution: See the following chart for the contact resistance values. Values are grouped by product family.
Fusing for Phase Monitor Relays
Issue: Are fuses required and what size fuse do you recommend using with your Phase Monitor Relays? Solution/Resolution: The use of fusing in-line with Macromatic phase monitor relays is not required;…
Percentage Timers: Electronic Replaces Mechanical
A Percentage Timer is a time delay relay commonly used in applications such as irrigation, chemical feeding, electric heating cooling, motors and lubrication systems. The Percentage Timer provides an output…
Macromatic Plug-in Products UL Listed with Sockets
Issue: What is the difference between “UL Listed” & “UL Component Recognized”? Solution/Resolution: We are often asked several questions regarding our plug-in products & UL certifications: "Why are some products…
Phase (Voltage) Unbalance Explained
Issue: How is Phase Unbalance calculated and how do Phase Monitor Relays from Macromatic react to an unbalanced voltage condition? Solution: Per the National Electrical Manufacturers Association (NEMA), phase (voltage)…
Replacing Obsolete TR-6 Series Time Delay Relays with T9 suffix
Several years ago, Macromatic discontinued all non-standard configurations of the TR-6 series products, including the –T9 suffix used on the TR-61626-T9 (and other voltages as well). If you need…
How do I set the THL-8 Series Time Delay Relay?
ISSUE: How do I set the THL-8 Series Time Delay Relay? SOLUTION: All THL-8 Series products come with a specific single time delay range as indicated on the nameplate and by the…
Macromatic Obsoletes SS-6 & SS-8 Time Delay Relays
Due to an upcoming component obsolescence, Macromatic has obsoleted the Compact Time Delay Relays, SS-6 and SS-8. Macromatic's TR-5 Series is an ideal replacement for the obsolete products and most are stocked at…
Using Voltage Monitor Relays as Under or Overvoltage Relays or Both
Issue: How do you use the Voltage Monitor Relay as an overvoltage relay? Undervoltage relay? Or Both? Solution/Resolution: Voltage Monitor Relays can be used as either overvoltage or undervoltage relays,…
Application: Bypass Timer
Macromatic THS-1054A Series The THS-1054A series offers accurate and reliable operation as a Low Pressure Switch Bypass or “Bypass Timer”. The time delay relay operates over a wide temperature range making it…
Macromatic’s New TCF Series Drop-In Replacement for MPE’s PMR1 & PMR3 Has More Advantages
Macromatic's TCF Series Over Temperature Seal Leakage Relays are a drop-in replacement for the PMR1 However, there are a several major advantages of the Macromatic product: Macromatic's TCF Series product…
Isolated Alarm Circuit Output on Plug-in 3-Phase Monitor Relays
Issue: I have an application where the panel control voltage is at 120V AC, but I need to have a 24V DC alarm circuit if the three-phase monitor relay trips.…
Where Are Seal Leakage Relays Used?
Bearings are one of the most important components of electric motors. Normally, they are designed to operate for many years. Yet, more than half of motor failures are caused by…
Wiring Control (Trigger) Switches from Multiple Time Delay Relays in Parallel
Issue #1: I have the control switches from 5 separate OFF Delay time delay relays from other manufacturers wired in parallel so one switch can operate all 5 at once.…
Time Delay Relays with Universal Voltage Reduce Inventory
Macromatic's classic TR-6 Series Time Delay Relays have undergone major enhancements with an innovative design making them ideal for a variety of applications. The TR-6 Series now offers the flexibility of an…
Replacements for Crouzet (Syr-Line) LIRT, PNR, PNRU, PJR, DIRT, DWR Products
Macromatic offers direct drop-in replacements to these Crouzet products See the chart below: Having trouble getting several products from Crouzet (Syr-Line)? Are you waiting up to 26 weeks for the Crouzet…
Using a 120V Alternating Relay with 208V Loads
Issue: Can I use an Alternating Relay with one input voltage value to control multiple loads at a different voltage? Solution/Resolution: Normally, a 120V Alternating Relay is used with 120V…
Replacing a Crouzet PNR110A with a Macromatic SFP120A100 Seal Leak Relay
Issue: I have been using a Crouzet PNR110A liquid level relay as a seal leak relay. To make it work properly, I had to jumper pins 5 6. Now, I…
True Off Delay Timer energized without input voltage
Issue: The output relay appears to be already energized on my True Off Delay timer without any input voltage applied. It was that way when I received it or I…
Using DPDT Cross-Wired Alternating Relays with HIGH-LOW Float Switches
Issue: I have two float switches and two pumps in my application: a HIGH float switch to pump the water down and prevent an overflow of the tank, and a LOW…
Maximum Voltage for Monitored Current
Issue: On any of your current sensing relays, is there a maximum voltage level for the current being monitored? Solution/Resolution: ProductsMaximum VoltageCAH, COK & CUH Encapsulated Products250VCAP Series Plug-in 500VCOKP Series Plug-in500VObsolete…
Replacing a Square D (Schneider) 8430MPS or 8430MPD Phase Monitor Relay
Issue: Schneider Electric (Square D) has obsoleted their complete line of 8430 MPS plug-in MPD surface-mount phase monitor relays. I see Macromatic has several products I could use to replace…
Using Time Delay Relays to Cycle a Traffic Signal
Issue: I have an old traffic signal that I would like to cycle through the Green-Yellow-Red lights. Can this be done with time delay relays? Solution/Resolution: This simple solution can…
TD-881 Series DIP Switch Programming
Start Over Select Function Select a Function On Delay Interval On Off Delay Triggered On Delay Flasher (On) Flasher (Off) Watchdog One Shot Falling Edge Single Shot Cycle (On) Cycle…
What is the difference between “UL Listed” & “UL Component Recognized”?
Question: What is the difference between “UL Listed” & “UL Component Recognized”? Answer: We are often asked several questions regarding our plug-in products & UL certifications: Why are some products…
Why UL 913 8th Edition Certification Matters?
Intrinsically Safe devices are not yet required to meet UL 913 8th Edition. So why does certification to the more stringent 8th Edition matter? Increased safety can reduce the risk…
Does my Phase Monitor Relay require a Short Circuit Current Rating?
Short Circuit Current Rating (SCCR) of Three-Phase Monitor Relays Since the 2005 edition, the NFPA70: National Electrical Code (NEC) requires that industrial control panels must be marked with an appropriate short…
Understanding Entity Parameters
Designing Intrinsically Safe Circuits When designing Intrinsically Safe Circuits, it is imperative to understand the entity parameters of the devices in your circuit. The entity parameters describe characteristics of the…
Typical Applications for Alternating Relays
Issue: How do I make connections to my Alternating Relay? Solution/Resolution: Macromatic offers several versions of Duplex Alternating Relays. The following examples are typically the way connections are made to…
Circuit Design for Intrinsic Safety
Intrinsic Safety Overview When installing electrical equipment in or near hazardous area locations, specific circuit design principles must be followed in order to prevent an explosion. Depending on the region…
What is a Phase Loss? How can I protect my equipment?
Question: What is Phase Loss? How can I protect my Equipment? Answer: When one phase of a three-phase system is lost, a phase loss occurs. This is also called 'single…
What Is Undervoltage? How Can I Protect My Equipment?
Question: What Is Undervoltage? How Can I Protect My Equipment? Answer: Undervoltage occurs when the average voltage of a three-phase power system drops below intended levels, and is sometimes referred…
What type of power systems can Macromatic relays protect?
Question: What type of power systems can Macromatic Three-Phase Monitor Relays protect? Answer: Macromatic devices work on many systems. Here are the descriptions, recommended connections and guidelines for Corner Grounded, Open Delta and High…
What Is Phase Unbalance? How Can I Protect My Equipment?
Question: What Is Phase Unbalance? How Can I Protect My Equipment? Answer: Phase unbalance of a three-phase system exists when one or more of the line-to-line voltages in a three-phase…
Triplex Pump Control Using Cost-saving Alternating Relays
Eliminate the PLC and Save with Macromatic ATP Series Relays Macromatic Triplexor Relays save panel space, reduce labor, with no programming.Macromatic. Specific-purpose ATP Series relays are ready to go…
Configuring Your Computer to Access the PC1MDUL Web Configuration
Refer to directions on PC1MDUL Instruction Sheet Please ensure that you have completed directions on the PC1MDUL Instruction Sheet 901-0000-346 located under heading “Ethernet Configuration Using Web Browser” prior to the steps…
The Next Industrial Revolution
The Impact of IoT Technology Search Google for “Internet of Things” (IoT) and you will find about 5 billion articles listed. There are over 8 million listings for news about…
The Heart of IoT Systems
Protecting Critical Equipment from Voltage Faults New products that embed communication in phase monitor relays can dramatically change the way equipment is monitored and controlled in smart network control systems.…
What happens when a time delay relay trigger is closed before voltage is applied?
Issue: I am using a time delay relay with a triggered function. My trigger switch will be closed before I apply voltage to the time delay relay. Will this work?…
Using Alternating Relays with DC Input Voltages
Issue: Do your Alternating Relays work on DC voltages? Your catalog used to only mention AC and the products were only marked as AC. Solution/Resolution: Until early 2017, our ARP…
Barrier Relays vs. Zener Barriers in Intrinsically Safe Control Circuits
Intrinsically safe control circuits provide a safe and cost-effective method for interfacing electrical control devices that span across hazardous and non-hazardous locations. Safety is ensured at these interfaces using intrinsically…
Definition of Repeat Accuracy
Issue: What does "repeat accuracy" mean in the Application Data section of your time delay relays? Solution/Resolution: Repeat accuracy is the percent variance of time within consecutive timing cycles once…
Macromatic Three-Phase Monitor Relays protect equipment from voltage faults
Macromatic Plug-In Three-Phase Monitor Relays provide protection for motors against premature failure caused by voltage faults. This family of relays delivers significant enhancements and exclusive features to protect against voltage drops…