AVALANCHE TYPE;2400 V;5 AMP;HIGH SECURITY ASSEMBLY;MOUNTED ON PCB FITTED TO RAIL MTG HOLDER;SUITABLE FOR TH35 OR G32 RAIL MTG;FOR USE IN TRIP CIRCUITS IN ASSOCIATION WITH MICROCONTROLLERS; COTTON TAPED AND VARNISHED, SUITABLE FOR IMMERSION IN TRANSFORMER OIL;C/W ATTACHED 4M 4MM PTFE FLYING LEADS;