AutomationDirect has added Dold safety speed relay modules to its line of safety products. Related To: AutomationDirect The BH5932 speed monitor relay module is designed to monitor two sensor inputs ...

These speed safety relays provide overspeed, under speed and/or standstill detection for single- or three-phase motors by monitoring either external proximity sensors mounted on a rotating element of ...

Not long after I began contributing to Hagerty eight years ago, I wrote a detailed four-part piece on electrical relays and how they work in cars. You can still find the articles here (Part I: Why We ...