The Schneider Electric WATSNB‑40/4PCR is a dual power automatic transfer switch designed for three‑phase low‑voltage power distribution systems. It provides reliable and automatic switching between two independent AC power sources (such as utility mains and a standby generator) to maintain continuous power supply for critical loads. The 4‑pole configuration switches all three phase conductors plus neutral for full load transfer and safety. The unit supports both automatic and manual changeover modes and includes auxiliary contacts for status feedback and system integration.
