SGM6sm-1600H

Thermal-adjustable type MCCBs are mainly used for providing indirect contact protection against fatal electric shocks, distributing electric energy, and protecting circuits and power supply equipment from faults such as overload, short circuit, and under-voltage. They are also applicable for the infrequent starting of motors and for providing overload, short circuit, and under-voltage protection.

Cambered projecting panel
Anti-touch transparent cover
Anti-flame&insulated enclosure
Ergonomic handle
Tripping button
Heat dissipation pattern on sides

Product
Description

The SGM6sm series MCCBs cover frame sizes from 160A to 1600A with 3/4-pole configurations and comply with IEC 60947-2. They operate at 380/400/415V AC, feature a rated insulation voltage of 1000V, and have Icu breaking capacities of up to 85kA (≤250A), 100kA (400-1000A), and 85kA (1600A), ensuring scalable protection across all frame sizes. The series also supports standard accessories (auxiliary contacts, shunt trips) and delivers reliable protection for industrial power systems.

To ensure long-term reliable operation of Molded Case Circuit Breakers (MCCBs), follow strict maintenance protocols: Before work, disconnect power and verify de-energization while wearing insulated gear. Inspect housing for cracks/discoloration in dry conditions; tighten terminals to manufacturer specs with torque wrench. Operate handle 5+ times to verify smooth switching/trip reset. Test insulation (≥1MΩ dry/≥0.5MΩ damp) and contact resistance (≤50μΩ; replace if exceeded), calibrate protection settings. Clean arc chambers and test shunt trip. Maintain annually (normal) or every 6 months (humid/dusty areas), with immediate post-fault checks. Record all data vs historical benchmarks.