🔹 WATSN Remote Transfer Switch – NR04003 (400A, 3 Pole, Remote Operated Changeover Switch)
The WATSN NR04003 Remote Transfer Switch (RTSE) is a high-capacity remote-operated transfer switch designed for reliable switching between two independent power sources in commercial, industrial, and critical power applications. It enables remote load transfer through external control signals from PLCs, generator controllers, SCADA systems, or Building Management Systems (BMS), allowing centralized power source management.
Featuring a 400A rated current, 3-pole configuration, and 400V AC operation, the NR04003 is built on the proven Class PC transfer switch platform, ensuring dependable switching performance, safe electrical isolation, and long operational life. The switch supports three operating positions—Source I, OFF, and Source II—providing safe transfer and maintenance functionality.
Designed in accordance with IEC 60947-6-1, the NR04003 delivers high electrical endurance, robust construction, and reliable operation in demanding environments where uninterrupted power management is essential.
• Genuine WATSN Remote Transfer Switch
• Model: NR04003
• Rated Current: 400A
• 3-Pole configuration
• Remote-operated transfer switch (RTSE)
• Class PC transfer switch technology
• Three-position operation (Source I – OFF – Source II)
• Remote electrical control capability
• Open transition switching operation
• Suitable for PLC, BMS, and SCADA integration
• High electrical and mechanical durability
• Compact panel-mount design
• IEC 60947-6-1 compliant
| Parameter | Specification |
|---|---|
| Product Type | Remote Transfer Switch (RTSE) |
| Model Number | NR04003 |
| Series | WATSN |
| Rated Current (Ie) | 400A |
| Number of Poles | 3 Pole |
| Rated Operational Voltage | 400V AC |
| Frequency | 50/60 Hz |
| Operation Type | Remote Electrical Operation |
| Transfer Switch Class | PC Class |
| Utilization Category | AC-33B |
| Transfer Type | Open Transition |
| Operating Positions | Source I – OFF – Source II |
| Rated Insulation Voltage (Ui) | 800V |
| Rated Impulse Withstand Voltage (Uimp) | 8kV |
| Mounting Type | Panel Mounted |
| Standard Compliance | IEC 60947-6-1 |
| Application | Remote Power Source Changeover |
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