The Schneider Electric Acti 9 iC65N 3P 40A 300mA is a 3-pole, 40A, 300mA Residual Current Circuit Breaker with Overcurrent Protection (RCBO). This integrated device combines a miniature circuit breaker (MCB) and an earth leakage protector (RCD) into one unit, specifically designed for three-phase circuits requiring protection against overloads, short circuits, and earth leakage currents, but with a higher residual current setting for equipment/fire protection rather than personal shock protection.
Specifications
Parameter Specification
Product Series Acti 9 iC65N
Type RCBO (Residual Current operated Circuit-breaker with integral Overcurrent protection)
Configuration 3 Poles (3P) – Three protected poles (phases). The neutral is monitored for leakage but is typically not switched by this device (external neutral connection).
Rated Current (Iₙ) 40 A (for overload and short-circuit protection)
Tripping Characteristic Typically Type C (Standard curve, 5-10 × Iₙ)
Rated Residual Current (IΔₙ) 300 mA
Residual Current Type Typically Type A (Protects against AC and pulsating DC residual currents) or Type AC (AC only). Type A is recommended for modern circuits.
Rated Voltage (Uₑ) 400 V AC (3-phase systems)
Breaking Capacity (I꜀ₙ) 6 kA (IEC/EN 61009-1)
Protection Functions 1. Overload Protection (Thermal)
2. Short-circuit Protection (Magnetic)
3. Earth Leakage Protection (Residual Current)
Neutral Connection Requires an external, uninterrupted neutral conductor to pass through the device's current transformer for leakage detection.
Mounting DIN Rail (35 mm)
Width 54 mm (3-module width)
Terminals Cage-clamp terminals
Status Indication Mechanical ON/OFF handle with trip flag.
Test Function Integrated test button.
Standards IEC/EN 61009-1, CE, RoHS, CCC
Ambient Temperature -25°C to +60°C