Middletown, Pa. — Phoenix Contact offers a family of electronic monitoring relays for single- and three-phase applications. The 22.5-mm wide, DIN-rail mountable modules can be used for monitoring ...

A new series of monitoring and alternating relays protect control systems from premature equipment failure and danger to personnel caused by voltage faults, current conditions or excessive load ...

Designed for industrial heating equipment where load failures need to be monitored for and prevented, the RJCS Series Current Monitoring Solid State Relay is the latest entry in the vendor’s Solitron ...

Relays are available for single-phase current monitoring, single-phase voltage monitoring, three-phase voltage monitoring and phase monitoring. Unlike the company's existing relays, each BL relay ...

The S-PRO 4000 relay provides real-time processing of voltage and current signals with sub-harmonic monitoring at 1 Hz intervals between 5 Hz and 25 Hz (5 Hz, 6 Hz, 7 Hz… 23 Hz, 24 Hz and 25 Hz).

Relays and contactors use a variety of technologies to switch signals and power connections. Many devices called relays use similar techniques and topologies, but the terminology can be confusing.

This Design Idea shows how to use a 63¢ (Q=1) microprocessor reset voltage detector IC in a relay coil drive circuit to greatly reduce the coil’s hold-in current. When asked to estimate the coil ...

Last column, I wrote about various applications where fire alarm relays could be used to integrate a commercial fire alarm system with other electrical systems at a customer’s site to provide them ...