Schneider Electric C100L420FM ComPacT NS1000L 4P 1000 A 150 kA MicroLogic 2.0 Moulded Case Circuit Breaker

The Schneider Electric C100L420FM is a 4-pole ComPacT NS1000L moulded case circuit breaker rated 1000 A, with a 150 kA breaking capacity (Icu) at 380/415 V AC. It is fitted with a MicroLogic 2.0 trip unit delivering long-time overload and instantaneous short-circuit protection (LI), is fixed-mounted and manually operated, and carries a 690 V rated operational voltage for industrial distribution switchboards.

Technical Specifications

Certifications & Standards

• IECEE CB Scheme
• EN/IEC 60947-2

Selection Notes

Its LI trip unit covers long-time overload and instantaneous short-circuit tripping only, which keeps the breaker simple and is adequate where upstream or downstream devices already handle short-time discrimination. The L-frame rating gives it 150 kA Icu at 380/415 V AC, the highest breaking-capacity class in the 1000 A frame; reserve it for incomers close to the transformer or otherwise exposed to prospective fault currents above what the H-frame sibling can clear. The 4-pole version adds a switched or protected neutral, which is the variant to specify on a TT or IT system where the neutral itself needs disconnection or protection.