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Siemens 2P 40A 100mA RCCB (5SV44140RC) – Residential

The Siemens 5SV44140RC is a 40A 2P RCCB designed for 240V residential applications requiring 100mA fire protection sensitivity.

Quick Answer

Yes, you should buy the Siemens 5SV44140RC if your primary concern is robust fire protection in your Indian residence, especially at the main incomer. Its 100mA sensitivity precisely targets thermal ignition risks, avoiding nuisance trips common with lower sensitivities. This 2P 40A RCCB provides critical earth leakage safety, complying with IS 12640-1 for peace of mind in residential circuits.

✓Detects insulation failures before they cause fires — 100mA Type AC residual current sensitivity.
✓Instantaneous tripping at ≤300ms — ensures immediate power disconnection during a 1× Idn fault condition.
✓High surge current tolerance — 500A making/breaking capacity manages inductive residential load startups.
✓Compact 36mm width — fits standard 2-module slots on residential 35mm DIN rail distribution boards.
✓Withstands severe voltage transients — 4 kV impulse withstand voltage protects internal components.
✓Flame-retardant safety housing — UL94 V-0 flammability rating and 960°C glow wire test compliance.

Opt for the Siemens 5SV44140RC if you're upgrading residential electrical safety with a reliable 100mA fire protection solution at the main incomer, avoiding nuisance tripping. Avoid if your application specifically demands 30mA personal shock protection or a different current rating, as this unit focuses on fire prevention.

Product Overview
The Siemens 5SV44140RC is a 40A 2P RCCB designed for 240V residential applications requiring 100mA fire protection sensitivity. This Type AC device is installed at the main incomer to provide earth leakage protection by continuously monitoring the current balance between phase and neutral. It complies with IS 12640-1 standards to ensure high-level electrical safety in Indian households.

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Engineering Analysis
A 100mA sensitivity level is specifically utilized for fire protection in residential circuits where 30mA units might experience nuisance tripping but 100mA prevents thermal ignition of materials. The 2-pole configuration ensures total isolation of both phase and neutral during a fault, while the 500A making/breaking capacity effectively manages the initial surge current of connected household loads. With a 10kA conditional short circuit rating, it remains durable during heavy electrical faults when used with an upstream MCB.

Technical Support & FAQs