The WATSN320 is a 320A molded case circuit breaker designed for reliable overcurrent and short-circuit protection in low-voltage power distribution systems. Featuring an electronic trip unit and fixed-mount design, it is suitable for industrial main circuits, motor protection, and commercial distribution applications.
Specifications
Parameter Specification
Model WATSN320
Frame Size 320A
Rated Current (In) 320 A (adjustable)
Poles Typically 3P or 4P (specify when ordering)
Rated Operational Voltage (Ue) 400 V AC 50/60 Hz
Breaking Capacity (Icu) 36 kA at 400 V AC
Trip Unit Electronic Micrologic 2.0/5.0/6.0
Protection Functions Long‑time, short‑time, instantaneous, ground fault
Mounting Fixed type
Connection Capacity 70‑185 mm² (copper cable)
Ambient Temperature Range –25 °C to +70 °C
Mechanical Life 8,500 operations
Standards IEC 60947‑2, GB 14048.2
Communication Optional communication module (Micrologic E/F/H)
Primary Applications
Industrial main distribution panels
Motor control centers (MCCs)
Commercial building main switchboards
Power supply protection for large equipment