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Siemens 4P 40A 100mA RCCB (5SV44440RC) – Residential

The Siemens 5SV44440RC is a 40A 4-pole (4P) Residual Current Circuit Breaker designed for 400V residential distribution systems. Installed as a main incomer, it provides dedicated earth leakage protection by monitoring current imbalance across all four lines to identify faults.

Quick Answer

Opt for the Siemens 5SV44440RC if you prioritize advanced fire protection and robust earth leakage safety for your 400V Indian residential main incoming supply. Its 100mA sensitivity is precisely calibrated to detect hazardous current imbalances quickly, preventing electrical fires. This 4-pole 40A RCCB provides dependable protection against critical faults, offering peace of mind in high-load domestic circuits.

✓Trips instantaneously to stop fire hazards — 100mA residual current sensitivity.
✓10kA conditional short circuit rating — ensures the device withstands high energy faults when paired with a backup MCB.
✓Safe operation in extreme climates — wide temperature range from -25°C to +75°C.
✓Halogen-free and flame-retardant construction — UL94 V-0 flammability rating for enhanced cabinet safety.
✓Visual confirmation of device health — integrated blue test button for monthly functional verification.
✓Compact 4-module width (72mm) — standard 35mm DIN rail mounting fits most residential distribution boards.

This Siemens 5SV44440RC is indispensable for homeowners and electricians installing or upgrading 400V residential mains in India, specifically where fire safety is paramount due to 100mA detection. Avoid if lower-sensitivity (30mA) personal protection RCCBs are needed downstream or if your system is less than 4-pole; it's designed for dedicated whole-house earth leakage at the incomer.

Product Overview
The Siemens 5SV44440RC is a 40A 4-pole (4P) Residual Current Circuit Breaker designed for 400V residential distribution systems. Installed as a main incomer, it provides dedicated earth leakage protection by monitoring current imbalance across all four lines to identify faults.

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Engineering Analysis
The 100mA sensitivity is specifically calibrated for fire protection in domestic settings, tripping within 300ms at 1x rated residual current. While the device handles 40A of continuous load, its 630A making and breaking capacity allows it to safely manage high-current connecting events. The 4P configuration ensures the neutral is disconnected during a fault, preventing dangerous potential differences in 3-phase residential setups.

Technical Support & FAQs