The WATSN-250/250/4R is a 4-pole 250A fixed-mounted molded case circuit breaker designed for main circuit protection in industrial and commercial power distribution systems. It features electronic trip unit protection with ground fault protection capability.
Specifications
Parameter Specification
Model WATSN-250/250/4R
Frame Size 250A
Rated Current 250A (adjustable)
Poles 4P (3 phases + neutral)
Rated Voltage 400V AC 50/60Hz
Breaking Capacity 36kA at 400V AC
Trip Unit Type Electronic (Micrologic 5.0/6.0)
Protection Functions Long-time, short-time, instantaneous, ground fault (4P)
Mounting Fixed type
Terminals Front cable connection (top/bottom)
Connection Capacity 70-185mm² (copper cable)
Standards IEC 60947-2, GB 14048.2
Ambient Temperature -25°C to +70°C
Mechanical Life 8,500 operations
Primary Applications:
Main distribution board protection
Industrial power supply systems
Commercial building main switchgear
Data center power distribution