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Macromatic Encapsulated Current Sensing Relays

The line of Macromatic current sensing relays is available through Major Electronix. The encapsulated housing replaces the older style plug-in housings and provides protection for use under more harsh conditions. The COH series checks only for overcurrent errors, the CUH series only covers undercurrent issues, and the CAH series can detect either over or under current problems. The CAH series has a manual switch to select the desired operating mode. All three series have a 10A SPDT output and LEDs to indicate a fault. These current sensing relays are designed for checking single phase AC current, and feature a built-in current transformer for better sensitivity.