The Schneider Electric C160H4WM is a basic frame — a bare, manually operated, withdrawable 4-pole chassis rated 1600 A at 50 °C, part of the ComPacT NS630b…1600 new generation range. It carries no trip unit, no protection module; the buyer adds a separate control unit (Micrologic or similar) to set the protection curves. This frame is the structural and current-carrying foundation for a distribution breaker in a low-voltage switchboard. Withdrawable mounting means the frame slides out of its cradle for inspection or swap without breaking the main power connections — a standard requirement for main and tie breakers in switchgear where maintenance access and arc-flash mitigation drive the design.
Integration — panel and switchgear fit
The frame mounts on a backplate in a withdrawable cradle. Dimensions: 306 mm wide, 260 mm high, 147 mm deep. The 70 mm connection pitch and left-side neutral position match the standard ComPacT NS1600H footprint — verify cutout and busbar alignment against the switchgear manufacturer's drawing before ordering. IP40 protection and IK07 impact resistance suit indoor switchgear installations. Class II insulation on the front face eliminates the need for a protective earth connection on the operator interface.
Standards and approvals — IEC 60947-2 backbone
Rated insulation voltage 800 V AC, rated impulse withstand 8 kV, and suitability for isolation — the frame provides visible isolation when racked out, meeting the safety requirements for a main disconnect.