Macromatic Industrial Controls KnowledgeBase & Blog

Circuit Design for Intrinsic Safety

Thursday: March 21, 2019 : Intrinsically Safe Relays

When installing electrical equipment in or near hazardous area locations, specific circuit design principles must be followed in order to prevent an explosion.


New Sales & Marketing Team Members Expand Customer Outreach Programs

Tuesday: January 1, 2019 : Blog

Macromatic welcomes two new members to its sales and marketing team. Tim Burns has been named National Sales and Marketing Manager. Bruce Peight has joined Macromatic as our Marketing Communications Specialist reporting directly to Tim.


Using Time Delay Relays to Cycle a Traffic Signal

Wednesday: December 19, 2018 : Time Delay Relays

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 be done with one Interval ON (TD1) & two Single Shot (TD2 & TD3) time delay relays. Wire the three time delay relays & traffic 


DPDT 240V Voltage Monitor Relay

Tuesday: December 4, 2018 : Blog

New VMP240AX 240V AC Voltage Monitor Relay offers DPDT output contacts when voltage isolation is required between two different voltage circuits.  If you need the control circuit to be at 120V AC and the alarm circuit at 24V DC, but want to save money and space, then this is the product to use.


Using Alternating Relays with DC Input Voltages

Monday: November 19, 2018 : Alternating Relays

Issue: Do your Alternating Relays work on DC voltages? Your catalog used to only mention AC and the products were only marked as AC. 


Hazardous Location Classifications

Saturday: November 17, 2018 : Intrinsically Safe Relays

When electrical equipment is used in, around, or near an atmosphere that has flammable gases or vapors, flammable liquids, combustible dusts, ignitable fibers or flyings, there is a possibility or risk that a fire or explosion might occur. 


Replacing a Square D (Schneider) 8430MPS or 8430MPD Phase Monitor Relay

Thursday: November 15, 2018 : Three-Phase Monitor Relays

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 the Square D products. Are there any special issues to address? Solution/Resolution: The following are the steps required to replace an obsolete Square D product with one from Macromatic


Replacement of Obsolete SS-4 Series Time Delay Relays

Wednesday: November 14, 2018 : Time Delay Relays

Issue: How do I convert from an obsolete SS-4 product with a spade base socket to one with an octal base socket? Solution/Resolution: The Macromatic SS-4 spade base products were obsoleted on August 1, 2010. If you have an application that uses an SS-4 product and need a replacement, you have two options: (a) switch


TE Connectivity Obsoleting Voltage Sensor Relays

Wednesday: August 29, 2018 : Blog

TE Connectivity is obsoleting their line of plug-in voltage sensor relays (the old Potter & Brumfield brand products). 


Macromatic earns Fastest Growing Firms Award

Friday: July 20, 2018 : Blog

Macromatic earns Fastest Growing Firms award from Milwaukee Business Journal. 


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Menomonee Falls, WI 53051

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