The Schneider Electric WATSNB‑100/16 .3CBR is a dual power automatic transfer switch (ATS) designed for three‑phase low‑voltage power distribution systems. It enables reliable and automatic switching of electrical loads between two independent AC power sources, such as utility mains and a standby generator, to ensure continuous power supply for critical equipment.
Technical Specifications
Parameter Specification
Model WATSNB‑100/16 .3CBR
Product Type Dual Power Automatic Transfer Switch
Rated Current 100 A (frame / switch rating)
Switched Poles 3‑pole (L1, L2, L3; neutral not switched)
Configuration Code .3CBR (3‑pole with auxiliary/feedback contacts and interlock)
Rated System Voltage Low‑voltage AC three‑phase (commonly ~380–440 V)
Rated Frequency 50 Hz / 60 Hz
Operation Modes Automatic transfer, manual override, interlocked switching
Auxiliary Contacts Yes – remote indication/control feedback
Safety Interlock Prevents simultaneous connection of both sources
Mounting Panel or switchboard installation
Application Areas Utility to generator changeover, backup power systems, industrial & commercial distribution