Tuesday, April 24, 2018
Publication Date: 12/1/2011
Archive >  December 2011 Issue >  New Products > 

Arc Flash Control Safety Relay from Electroswitch
Arc safety switch control.
Weymouth, MA — A new Time Delay Control Switch Relay (TD-CSR) from Electroswitch provides a safe and effective means of mitigating arc flash danger in local circuit breaker operation by allowing for a manually initiated time-delayed trip or close. A flashing LED notifies the operator of the pending trip or close operation and serves as a warning to evacuate the arc flash area.

By allowing an operator time to leave the room before the trip or close operation, the TD-CSR affords the operator the same safety from arc flash as a SCADA system — at a small fraction of the cost. Once a local trip or close is initiated, the 10-second delay allows an operator time to cancel the pending operation. To avoid any chance of an inadvertent operation, the control pushbuttons must be depressed for 4 continuous seconds to activate the 10-second delay. Other delay time options are available.

The unit's intuitive pushbutton design simplifies personnel training. No special wiring is required for installation.

The TD-CSR is available with the same reliable features and options as the company's Control Switch Relay. These features include a standard mechanical target ("flag") to show the last operating position, and an optional lighted nameplate. 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 very low contact resistance for low-level control applications. Rugged, standard screw-type terminals have a 30A/600V continuous-current rating. The TD-CSR meets IEEE C37.90 series standards.

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