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WATSNA-160/160-4PCR

The Schneider Electric WATSNA is an Automatic Transfer Switch (ATS). The model WATSNA-160/160-4PCR specifies a 160A rated current, a 4-pole (3P+N) configuration with overlapping Neutral (PCR - "Pole Common for Neutral"), and is designed for transferring loads between two independent AC power sources automatically.

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Parameter Specification Product Series WATSNA (Automatic Transfer Switch) Model WATSNA-160/160-4PCR Rated Operational Current (Ie) 160 A (for both sources) Number of Poles 4 Poles (3 Phase + Neutral) - with Common, Unswitched Neutral (PCR) Rated Insulation Voltage (Ui) 1000V AC Rated Operational Voltage (Ue) 400V AC, 50/60 Hz Utilization Category AC-33B (Switching of motor loads or mixed loads) Control Logic Automatic, microprocessor-based controller. Features source monitoring, programmable timers (delay to transfer, delay to retransfer, engine cool-down), and status indications. Transfer Time Typical break-before-make operation, with total open time typically < 100ms (depending on sensing and actuator). Mechanical/Electrical Life Data sheet specific. Typically thousands of transfer operations. Control Power Supply Separate AC or DC supply for the controller and motor operator. Mounting Panel-mounted or free-standing enclosure. Standards IEC 60947-1, IEC 60947-6-1, UL 1008 Protection Degree (Enclosure) Varies (e.g., IP20 for panel mount, higher IP ratings for standalone units).