10A B Curve 30mA A Type 6KA 1P+N RCBO (NB3LEG-B10)
10A B Curve 30mA A Type 6KA 1P+N RCBO (NB3LEG-B10)
SKU:NB3LEG-B10
Brand: CHINT
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Product Details
Product Details
The Chint NB3LEG-B10 RCBO is a reliable protective device designed to keep electrical circuits secure and compliant. Combining residual current detection and over-current protection in one compact unit, it safeguards against overloads, short-circuits and earth leakage faults while helping to protect people and property from electric shock and fire risk.
Engineered with a 10 amp rated current, this RCBO is ideal for domestic and light commercial electrical circuits such as lighting circuits, socket outlets and small appliance feeds. It features a B-curve tripping characteristic, offering fast and accurate response to overloads typical in everyday circuits.
With 30 milliamp Type A sensitivity, the unit detects both AC and pulsating DC residual currents, providing extra protection where modern electronic equipment is used. The compact 1P + N (single pole plus neutral) configuration makes installation quick and efficient on standard DIN rails.
Built to meet rigorous standards, the NB3LEG-B10 has a 6 kiloamp short-circuit breaking capacity that ensures the unit can safely interrupt high fault currents without damage. Its robust design includes a contact position indicator and complies with BS EN/IEC 61009-1 safety norms for consumer units and distribution boards.
Compact and dependable, the NB3LEG-B10 offers peace of mind in every installation. Whether you are wiring a new build or upgrading an existing consumer unit, this RCBO gives essential protective performance in a space-saving module that supports clean, organised electrical distribution.
Product Specifications
Product Specifications
Electrical Specifications
- Rated Current (In): 10A
- Number of Poles: 1P+N
- Tripping Curve: B Curve (3-5 In)
- Residual Current Type: Type A
- Rated Sensitivity (IΔn): 30mA (0.03A)
- Rated Voltage (Ue): 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
- Break Time under IΔn: ≤ 0.1s
- Energy Limiting Class: 3
- 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
- Connection Direction: From top
- Terminal Size (Cable): Up to 10mm² (18-8 AWG)
- Terminal Size (Busbar): Up to 16mm² (18-5 AWG)
- Tightening Torque: 2.0 N·m (18 In-lbs)
- Electrical Life: 2,000 operations
- Mechanical Life: 2,000 operations
- Protection Degree: IP20
- Contact Position Indicator: Yes (Visual status window)
- 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
Key Features
- Space-Saving Design: Occupies only a single-module width (18mm) to maximize available space within consumer units and distribution boards.
- Type A Safety: Engineered to handle the residual current profiles of modern electronic equipment, including computer power supplies and LED lighting drivers.
- Complete Protection: Provides robust protection against overloads, short circuits, and earth leakage faults, significantly reducing fire and shock hazards.
- B-Curve Optimized: Specifically suited for the protection of people and long cable lengths in systems where low inrush currents are expected.
Standards & Compliance
- Primary Standard: BS EN 61009-1 / EN 61009-1
- EMC Standard: EN 61543
- Directives: Low Voltage Directive 2014/35/EU, EMC Directive 2014/30/EU
- Certification: CE Marked, Intertek Verified
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