Schneider Electric C125N350FM ComPacT NS1250N 3P 1250 A 50 kA MicroLogic 5.0 Moulded Case Circuit Breaker

The Schneider Electric C125N350FM is a 3-pole, 1250 A ComPacT NS1250N moulded case circuit breaker rated for 50 kA breaking capacity (Icu) at 380/415 V AC. Fixed-mounted and manually operated, it carries a MicroLogic 5.0 electronic trip unit delivering long-time overload, short-time delay and instantaneous short-circuit protection, and is rated up to 690 V AC for standard-breaking-capacity distribution duty in the ComPacT NS630b...1600 new generation line.

Technical Specifications

Certifications & Standards

• IECEE CB Scheme
• EN/IEC 60947-2

Selection Notes

The N-frame classification gives the C125N350FM 50 kA Icu at 380/415 V AC, sized for standard distribution duty on the 1250 A frame; where fault levels run higher, the H-frame version of the same frame size delivers a higher Icu without a change in footprint. Its MicroLogic 5.0 trip unit adds a short-time delay stage over the 2.0 (LI) units in this frame, letting it hold through a downstream breaker's instantaneous trip for selective coordination on a main or sub-main application. The base MicroLogic 5.0 unit has no digital display — settings are read off the dial markings, with no RMS or energy readout. At 210 mm wide on 3 poles, it suits 3-phase-only distribution with no neutral protection; the 4-pole version of the same frame is available where the neutral conductor must be switched and protected.