The Schneider Electric Acti9 iID is a Residual Current Circuit Breaker (RCCB) used for earth‑leakage protection in residential, commercial, and industrial distribution boards. Its role is to disconnect the circuit when a dangerous leakage current to earth is detected, helping protect people against electric shock and installations against fire.

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What the iID RCCB does (and does not do)

✅ Protects against earth‑leakage (residual current)
✅ Provides isolation
❌ Does NOT protect against overload or short‑circuit

Because of this, an iID RCCB must always be used together with an MCB(such as Acti9 iC60N or iC60H) to provide complete circuit protection.

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Key characteristics of Acti9 iID RCCB

1. Residual current protection

• Detects imbalance between live and neutral currents
• Trips when leakage exceeds the rated sensitivity
• Voltage‑independent operation(works even with undervoltage)
• Instantaneous tripping(unless a selective “S” type is used)

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2. Sensitivity ratings (IΔn)

Common options available:

• 30 mA → personal shock protection
• 100 mA → fire protection / upstream protection
• 300 mA → main incomer/fire protection

These options allow coordination and selectivity across multiple protection levels.

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3. RCCB types (leakage waveform detection)

The iID range includes several protection classes:

• Type AC – detects sinusoidal AC leakage
• Type A – detects AC + pulsating DC (recommended for modern electronics)
• Type A‑SI / S – high immunity or time‑delayed (selective)
• Type B / B‑EV – smooth DC leakage (EV chargers, inverters)

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4. Electrical & mechanical data (typical)

• Rated current (In): approx. 25 A to 100 A
• Poles:
  • 2P(single‑phase)
  • 4P(three‑phase)
• Rated insulation voltage (Ui): 500 V
• Impulse withstand (Uimp): 6 kV
• Conditional short‑circuit rating: up to 10 kA(with upstream MCB)
• Mechanical endurance:~20,000 operations

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Safety & diagnostics (Acti9 features)

• VisiTrip™ – mechanical indicator shows which RCCB has tripped
• VisiSafe™ – green indicator confirms full contact separation
• IP20 protection (IP40 when installed in an enclosure)
• Padlockable toggle for maintenance safety

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How iID fits in an Acti9 system

Typical coordination:

• Incoming supply
• iID RCCB → detects earth leakage
• iC60N / iC60H MCBs → protect individual circuits from overload & short‑circuit

This arrangement is common where group earth‑leakage protection is preferred instead of individual RCBOs.

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iID RCCB vs iDPN Vigi RCBO

Feature	iID RCCB	iDPN Vigi RCBO
Earth leakage	✅	✅
Overload protection	❌	✅
Short‑circuit protection	❌	✅
Typical use	Group protection/incomer	Individual circuits
Width per function	Larger (with MCBs)	Compact (all‑in‑one)

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Typical applications

The Acti9 iID RCCB is widely used for:

• Residential main earth‑leakage protection
• Commercial distribution boards
• Industrial sub‑distribution
• EV circuits (Type B / B‑EV models)
• Fire protection at the incomer level