These are massive single-pole double-throw (SPDT) sealed relays. This means that when current is applied to the coil it throws a simple changeover switch terminating the connection from the NC contact
These are massive single-pole double-throw (SPDT) sealed relays. This means that when current is applied to the coil it throws a simple changeover switch terminating the connection from the NC contact to ground and closing the NO contact. Use them to switch high-voltage/high-current devices.This is the same relay we use in our Beefcake Relay Control Kit.