Description
Schneider R9R51240 | Residual current circuit breaker (RCCB), Resi9, 2P, 40A, AC type, 30mA
Technical Specifications
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Product Code: R9R51240
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Series: Resi9
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Device Type: Residual Current Circuit Breaker (RCCB)
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Number of Poles: 2P (Phase + Neutral)
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Rated Current (In): 40 A
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Residual Current Sensitivity (IΔn): 30 mA
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RCCB Type: AC (sensitive to sinusoidal AC leakage)
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Rated Voltage: 230/240 V AC
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Rated Frequency: 50/60 Hz
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Tripping Time: ≤ 300 ms (standard), ≤ 40 ms (at higher fault currents)
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Mounting Method: DIN rail (modular design)
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Terminal Capacity: Up to 25 mm² (rigid cables)
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Degree of Protection: IP20 (front face)
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Compliance Standards: IEC/EN 61008-1
Key Features
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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.
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2-Pole Protection: Designed for single-phase applications, protecting both line and neutral conductors.
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Type AC Performance: Suitable for traditional AC applications such as lighting, power sockets, and domestic appliances.
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Compact Form Factor: Space-saving design fits easily into consumer units or small distribution boards.
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Manual Test Button: Allows routine testing of RCCB functionality to ensure safety remains effective over time.
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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
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General power circuits and socket outlets
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Bathrooms, kitchens, and outdoor equipment
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Appliances like washing machines, dishwashers, and refrigerators
Light Commercial Use
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Protection in office spaces, clinics, and retail areas
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Equipment circuits with low-to-moderate earth leakage risk
Upgrades in Electrical Panels
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Ideal for replacing or adding residual current protection in existing installations without major rewiring
