Schneider R9R51240 | Residual current circuit breaker (RCCB), Resi9, 2P, 40A, AC type, 30mA

Technical Specifications

• Product Code: R9R51240

• Series: Resi9

• Device Type: Residual Current Circuit Breaker (RCCB)

• Number of Poles: 2P (Phase + Neutral)

• Rated Current (In): 40 A

• Residual Current Sensitivity (IΔn): 30 mA

• RCCB Type: AC (sensitive to sinusoidal AC leakage)

• Rated Voltage: 230/240 V AC

• Rated Frequency: 50/60 Hz

• Tripping Time: ≤ 300 ms (standard), ≤ 40 ms (at higher fault currents)

• Mounting Method: DIN rail (modular design)

• Terminal Capacity: Up to 25 mm² (rigid cables)

• Degree of Protection: IP20 (front face)

• Compliance Standards: IEC/EN 61008-1

Key Features

• Human Safety Focused: With a 30mA trip threshold, the RCCB disconnects the power quickly when earth leakage is detected, reducing the risk of fatal electric shocks.

• 2-Pole Protection: Designed for single-phase applications, protecting both line and neutral conductors.

• Type AC Performance: Suitable for traditional AC applications such as lighting, power sockets, and domestic appliances.

• Compact Form Factor: Space-saving design fits easily into consumer units or small distribution boards.

• Manual Test Button: Allows routine testing of RCCB functionality to ensure safety remains effective over time.

• Reliable Isolation Function: Provides full disconnection of the circuit for safe maintenance or fault handling.

Applications

The R9R51240 RCCB is highly recommended for:

Residential Installations

• General power circuits and socket outlets

• Bathrooms, kitchens, and outdoor equipment

• Appliances like washing machines, dishwashers, and refrigerators

Light Commercial Use

• Protection in office spaces, clinics, and retail areas

• Equipment circuits with low-to-moderate earth leakage risk

Upgrades in Electrical Panels

• Ideal for replacing or adding residual current protection in existing installations without major rewiring