Schneider Electric C10V4TM080 ComPacT NSX100HB1 4P 80 A 75 kA TM-D Fixed Moulded Case Circuit Breaker

Schneider Electric's C10V4TM080 is a 4-pole ComPacT NSX100HB1 moulded case circuit breaker rated 80 A, delivering 75 kA breaking capacity (Icu) at 690 V AC and a 690 V AC operational voltage (Ue). Its TM-D thermal-magnetic trip unit pairs adjustable overload protection with a fixed 640 A instantaneous short-circuit trip, fixed-mounted for low-voltage distribution boards.

Technical Specifications

Certifications & Standards

• EN/IEC 60947-2

Selection Notes

The HB1 code marks this as a 690 V AC frame, rated 75 kA Icu at that voltage (85 kA at 500 V AC) — for LV networks run at 690 V, outside the voltage range of the standard N or R frames. Its TM-D thermal-magnetic trip unit combines the LI protection set in one block: L is the overload (thermal) function, adjustable 0.7–1 × In, and I is the short-circuit (magnetic) function, fixed at 640 A — so no separate instantaneous relay is needed. The fourth (neutral) pole is protected at 1 × Ir (4D), giving full four-pole overcurrent coverage without an external neutral relay. Within the same NSX100HB1 frame, pick the 80 A trip rating to match the protected circuit's full-load current — lower- and higher-current variants share the same breaking capacity and enclosure footprint.