10A B Curve Type A 2P RCBO (NB310L‑2P‑B10)
10A B Curve Type A 2P RCBO (NB310L‑2P‑B10)
SKU:NB310L-2P-B10
Brand: CHINT
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Product Details
Product Details
The 10A B Curve Type A 2P RCBO (SKU: NB310L‑2P‑B10) is a durable, high-performance residual current circuit breaker with over-current protection designed for modern electrical installations. Made by CHINT, this compact RCBO combines two essential safety functions in one unit: earth leakage detection and overload/short-circuit protection. It protects people and property from electric shock and reduces fire risk in residential and commercial wiring circuits.
This two-pole (2P) device delivers rated current protection at 10 amps and offers a Type A trip characteristic that responds to both alternating and pulsating direct current faults. Its B curve magnetic tripping is ideal for circuits with predominantly resistive loads such as lighting, sockets and general power circuits. It helps to reduce unwanted tripping on normal load fluctuations.
Built to comply with international safety standards IEC/EN 61009‑1, this RCBO features a 30 mA residual operating current for effective personal protection and an impressive 6 kA breaking capacity to handle fault currents without damage. The compact module clips easily into a standard 35 mm DIN rail for fast installation and fits neatly within consumer units and distribution boards.
The NB310L‑2P‑B10’s robust construction ensures reliable performance over time, while its clear contact position indicator makes it easy to verify status at a glance. Whether you are protecting lighting circuits or socket circuits in homes, offices or commercial properties, this RCBO offers dependable safety and compliance for UK electrical systems.
Product Specifications
Product Specifications
Electrical Specifications
- Rated Current (In): 10A
- Number of Poles: 2P
- Tripping Curve: B Curve (3-5 In)
- Residual Current Type: Type A
- Rated Sensitivity (IΔn): 30mA (0.03A)
- Rated Voltage (Ue): 230V / 240V AC
- Rated Frequency: 50/60Hz
- Rated Short-circuit Capacity (Icn): 6,000A (6kA)
- Rated Residual Making and Breaking Capacity (IΔm): 3,000A
- Insulation Voltage (Ui): 500V
- Rated Impulse Withstand Voltage (Uimp): 4,000V (4kV)
- Break Time under IΔn: ≤ 0.1s
- Release Type: Thermo-magnetic
Mechanical & Installation Data
- Mounting: 35mm DIN Rail (EN 60715) via fast clip device
- Terminal Connection Type: Cable / U-type busbar / Pin-type busbar
- Terminal Size (Cable): Up to 25mm² (18-3 AWG)
- Terminal Size (Busbar): Up to 10mm² (18-8 AWG)
- Tightening Torque: 2.0 N·m (18 In-lbs)
- Connection Direction: From top and bottom
- Electrical Life: 2,000 operations
- Mechanical Life: 2,000 operations
- Protection Degree: IP20
- Contact Position Indicator: Yes
- Pollution Degree: 2
Environmental Specifications
- Ambient Operating Temperature: -5°C to +40°C (Daily average ≤ 35°C)
- Storage Temperature: -25°C to +70°C
- Reference Temperature for Tripping: 30°C
Dimensions
- Width: 36mm (2 modules)
- Height: 86mm
- Overall Depth: 77.1mm
Key Features
- Comprehensive Protection: Provides dual-function safety by protecting cables and lines against overloads and short circuits while simultaneously offering personnel protection against direct contact.
- Type A Versatility: Specifically designed to ensure tripping for sinusoidal alternating residual currents and pulsed DC residual currents, common in modern electronic environments.
- B-Curve Performance: Optimized for the protection of people and long cable lengths in TN and IT systems where low inrush currents are expected.
- Visual Status Monitoring: Includes an integrated contact position indicator for clear visual confirmation of the device status.
Standards & Compliance
- Primary Standard: IEC/EN 61009-1
- Certification: CE Marked, KEMA-KEUR Verified
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