25A B Curve 30mA A Type 6KA 1P+N RCBO (NB3LEG‑B25)
25A B Curve 30mA A Type 6KA 1P+N RCBO (NB3LEG‑B25)
SKU:NB3LEG-B25
Brand: CHINT
In stock
This is pre-order - Available in 7 – 10 days
Couldn't load pickup availability
Product Details
Product Details
The 25A B Curve 30mA A Type 6KA 1P+N RCBO (NB3LEG‑B25) from CHINT delivers dependable circuit protection in a compact, high-performance unit. Designed for domestic and light commercial installations, this device combines overcurrent protection and residual current detection in one module, safeguarding both people and property from faults.
Built to fit a standard DIN rail, the NB3LEG‑B25 protects individual circuits with a 25 amp rating and 30mA residual current sensitivity, giving reliable protection against overloads, short circuits and earth leakage faults. Its Type A characteristic extends sensitivity to both AC and pulsating DC leakage currents, making it ideal for modern electrical loads such as LED lighting, kitchen appliances and power sockets.
The B curve trip response is matched to typical domestic circuit behaviours, balancing nuisance tripping with fast reaction to dangerous overcurrents. With a 6kA breaking capacity it meets recognised safety standards and provides robust performance across living spaces, workshops or office circuits.
Compact and easy to install, the NB3LEG‑B25 occupies only one module space in your consumer unit, so you can expand protection without wasting slots. Its solid build quality from CHINT ensures dependable operation and long service life.
Whether you are updating an existing board or designing a new installation, this RCBO is a smart choice when you want dual protection in one cost-effective unit.
Product Specifications
Product Specifications
Electrical Specifications
- Rated Current (In): 25A
- 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: 50Hz
- 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
Product Downloads
Product Downloads
