Phoenix Contact Power Relays PCB relay 629851 - Phoenix Contact 2987956, Phoenix Contact manufactures the REL-MR-24AC/21-21/MS PCB relay, which operates at 24 V AC and supports 8 A current with 2 change-overs. This mini PCB relay is designed for efficient switching in electronic circuits and comes in a pack of 10 pieces. Typical applications include automation systems and control panels. Phoenix Contact 2987956 REL-MR 24V AC 8A PCB Relay 2PDTs LED 10 pieces