KnowledgeBase & Blog | Macromatic Industrial Controls

600V-Rated Sockets for Use with Phase Monitor Relays

Tuesday: April 14, 2015 : Three-Phase Monitor Relays

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 catalogs, 8 pin sockets are normally only rated 300V and my system voltage is 480V.

Whose Three-Phase Monitor Relay is Right for You?

Tuesday: April 14, 2015 : Three-Phase Monitor Relays

You have a choice when it comes to selecting a Three-Phase Monitor Relay for your motor and specific application. While all the Three-Phase Monitor Relay products provide protection against motor and system faults, Macromatic has gone an extra step and designed a new generation of relays with some ingenious features that promise to benefit you.

What Is Phase Reversal? How Can I Protect My Equipment?

Monday: April 13, 2015 : Blog

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 can cause a hazardous condition that may destroy

New THR-3 Series Encapsulated Programmable Timers

Friday: April 10, 2015 : Blog

Do you have a machine down and need a cube time delay relay NOW to get it running again? Are you tired of calling your supplier and being told the lead time is several weeks & there is a minimum order requirement?

What is Overvoltage? How Can I Protect My Motor?

Wednesday: March 11, 2015 : Blog

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 stresses.

How Do You Set Up an Old Guardian PET1481A Time Delay Relay?

Friday: February 27, 2015 : Time Delay Relays

Issue: I have an old Guardian PET1481A timer. How do you set it up? Do you offer a replacement product for this obsolete unit? Solution/Resolution: Macromatic used to build the PET1481A time delay relay under contract for Guardian Electric Manufacturing Company, but we stopped back in 2003. Since we built & sold the product to

Products with 8 Pin Headers Instead of 11 Pin

Friday: February 20, 2015 : Time Delay Relays

Issue: I want to use an Off Delay time delay relay with an 8 pin octal socket, but your catalog only lists an 11 pin version. What can I do? Solution/Resolution: Most Off Delay, Single Shot and other time delay relay functions that use a control switch to initiate action come in DPDT output 11

3-Phase Monitor Relays & Phase Converters

Monday: February 9, 2015 : Three-Phase Monitor Relays

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: There are two important items to watch out for in this application. STATIC phase converters are not truly providing 3 phase power and are not

A Non-Operational Macromatic Product After a Period of Time in Service

Saturday: February 7, 2015 : General Articles

Issue: I have a Macromatic relay that has stopped working. The product was working fine one day and then stopped functioning the next. What’s wrong? Solution/Resolution: Most Macromatic products have either a fusible resistor or a fusible trace on the PCB that acts like a fuse.