Electroswitch's Time Delay Control Switch Relay addresses arc flash safety

Electroswitch has unveiled a Time Delay Control Switch Relay (TD-CSR). The TD-CSR safely and effectively mitigates the arc flash danger in circuit breaker operations. It provides a manually initiated time-delay trip or close operation that incorporates a flashing LED to notify the operator of a pending trip or close operation and to evacuate the “arc flash” area. SCADA operation is not required.

Local trip or close capability is initiated and delayed for 10 seconds with an option to easily cancel the pending trip or close operation. To avoid any chance of an inadvertent operation, the control push buttons must be depressed for four continuous seconds to activate the 10-second delay. The unit’s intuitive push-button design simplifies personnel training, and no special wiring is required for installation.

The TD-CSR is available with the same features and options as the Electroswitch Control Switch Relay, which include a standard mechanical target (“flag”) to show the last operating position and a lighted nameplate option. The nameplate includes local LED indication, a remote SCADA contact alarm and a single or dual trip-coil monitoring option.

Reliable, self-cleaning, double-wiping contacts with silver or silver alloy surfaces provide low contact resistance for low-level control applications. Terminals are standard screw-type terminals that handle a 30A/600V continuous current rating. The TD-CSR meets all IEEE C37.90 series standards for electroswitch relay products.

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