MCCB Auxiliary Contact | Onesto KCM5 Pump Controller A reinforced concrete base is

A reinforced concrete base is strongly recommended for large sizes

Confirm NH00 vs NH1 body size and current rating matches your battery bank and fuse holder before ordering

chemical resistance

This is the most important step: confirm the exact relay model you are fitting before selecting a variant

MCCB Auxiliary Contact | Onesto KCM5 Pump Controller A reinforced concrete base isThe Onesto KCM5 Auxiliary Contact is a signalling accessory that fits onto a KCM5 adjustable thermal or electronic trip MCCB to provide a remote indication of the breaker's position (open or closed). It is suitable for electricians, panel builders and control system integrators who need to feed breaker status back to a PLC, BMS, SCADA system or indicator lamp. Available sized to match the 160S, 250S, 400S, 630S, 800S, 1000S or 1250S KCM5 MCCB frame.