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eBay£59.41Visit shop 5SV4 25A/30mA AC 4P RCD Residual Current Circuit Breaker 25A
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The Siemens 5SV4342-0 is a high-reliability, 4-pole residual current circuit breaker (RCCB) designed for electrical professionals and facility managers who require robust protection against ground faults and electrical fires in residential or light industrial settings. It excels at detecting and tripping on hazardous residual currents, ensuring safety for both personnel and equipment; however, it is important to note that this specific model is a Type AC breaker, which is optimized for sinusoidal alternating residual currents and may not be suitable for circuits requiring DC-sensitive (Type A or B) protection.
| Series | SENTRON |
|---|---|
| Model Part Number | 5SV4342-0 |
| Brand | Siemens |
No, it is rated IP20. It must be installed inside a suitable weatherproof consumer unit or electrical enclosure if used in damp environments.
No, this is a Type AC device. You would need a Type A or Type B RCD for equipment that generates DC-pulsed residual currents.
30mA is the residual current sensitivity, meaning the device will trip if it detects a leak of 30 milliamperes or higher, which is the standard threshold for personal injury prevention.
This is an RCCB (Residual Current Circuit Breaker) designed for leakage protection. It does not replace a standard MCB (Miniature Circuit Breaker) which provides overcurrent and short-circuit protection.
The device is rated for operation at 400V AC.
Check the downstream circuit for a short circuit or a ground fault. If the fault persists after disconnecting all loads, the device itself or the wiring may be compromised.
Verify that there is no residual leakage current present in the circuit. Ensure the supply voltage is consistent with the 400V AC rating.
The 5SV4 series is designed for tool-free removal. Ensure the locking slider at the bottom of the device is fully disengaged before attempting to pull it away from the rail.
Installation must be performed by a licensed professional in accordance with local electrical codes. The device snaps directly onto a standard DIN rail. Ensure all terminal screws are tightened to the torque specifications printed on the device housing to prevent overheating at the connection points. Periodically inspect the device for physical damage and use the test button (if applicable to the specific installation setup) to ensure the mechanical trip mechanism remains functional. Keep the ambient environment within the specified -25°C to 45°C range to maintain operational integrity.
