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 ...

Reportedly unique to the industry, the 2000SA series time-delay relays rely on an integrated, 12-position DIP switch to set the built-in timing ranges from 0.1s to 1,024 hrs. ...

The function of the 50Ω resistor, R 2, in Figure 1 is to limit the switch-on surge current into the time-delay-relay circuit. The zener diode, D Z, limits the voltage rise across C 1 to 15V in the ...