Stepping relay 12V 10A, pos. triggered. Toggle relays are used where load is switched on and off using buttons, e.g. work lights.

After applying the operating voltage to pin 15, the relay goes into standby. Contact 87z is connected to 87a. After applying voltage to pin I, the relay contact switches and 30 and 87 are now connected. If a new impulse is detected at input I, the relay switches over again. If pin 15 is without power, the relay falls back to the standby state.