C12A21X24D Releco PCB Mount Power Relay, 24V dc Coil, 5A Switching Current, DPDT. The RELECO C12 series 2-pole PCB mount non-latching relay has a contact configuration of DPDT. It is actuated with a 24VDC coil and 5A switching current. This relay has a test button, LED indicator and mechanical flag indicator. The test button is colour coded and dual function, push to test or lift to latch.