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CHINT 20A 2-Pole B-Curve A-Type RCBO (NB310L-2P-B20)

CHINT 20A 2-Pole B-Curve A-Type RCBO (NB310L-2P-B20)

NB310L-2P-B20

Brand: CHINT

Dual-Action Protection: Combines overcurrent and earth-leakage protection in one device to safeguard both your wiring and your family. Modern Sensitivity: The A-type rating means it is designed to handle the complex electrical loads of modern household electronics. Space-Saving Design: Its 2-module profile fits efficiently into your consumer unit, allowing for more versatile board configurations. Optimized for Domestic Use: The B-curve trip characteristic is perfectly suited for standard home circuits, providing reliable tripping when it matters most. Trusted Quality: Part of the CHINT Shield range, backed by technical support and compliant with rigorous industry standards.

In stock

This is pre-order - Available in 7 – 10 days

£41.28 GBP
£41.28 GBP
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Product Details

Upgrade your circuit safety with the professional-grade CHINT Shield NB310L-2P-B20 RCBO. This 2-pole device is a critical safety component that combines the functions of a miniature circuit breaker (MCB) and a residual current device (RCD) into a single, efficient unit.

Specifically engineered for the NB310L Series, this 20A RCBO features a B-curve characteristic, making it ideal for domestic and light commercial applications where switching surges are low. Its A-type sensitivity ensures it can effectively detect both AC and pulsating DC residual currents, providing enhanced protection for modern electronics and appliances.

Designed with the installer in mind, its 2-module width allows for easy integration into standard distribution boards while maintaining a clean, professional finish. Whether you are a trade professional or a retail customer looking for premium electrical protection, the CHINT NB310L-2P-B20 delivers peace of mind through industry-leading engineering.

Product Specifications

Electrical Features

  • Rated Current (In): 20A
  • Number of Poles: 2P
  • Tripping Curve: B Curve (Magnetic release at 3-5 In)
  • Tripping Class: Type A (senses AC and pulsed DC residual currents)
  • Rated Voltage (Ue): 230/240 V
  • Rated Sensitivity (IΔn): 30mA (0.03A)
  • Rated Short-Circuit Capacity (Icn): 6,000 A (6kA)
  • Break Time under IΔn: ≤ 0.1s
  • Rated Frequency: 50/60 Hz
  • Insulation Voltage (Ui): 500 V
  • Rated Impulse Withstand Voltage (Uimp): 4,000 V (4kV)
  • Electrical Life: 2,000 operations
  • Mechanical Life: 2,000 operations

Mechanical & Installation Features

  • Mounting: Standard DIN rail EN 60715 (35mm) via fast clip device
  • Terminal Connection Type: Compatible with Cable, U-type busbar, and Pin-type busbar
  • Terminal Size for Cable: 25mm² (18-3 AWG)
  • Terminal Size for Busbar: 10mm² (18-8 AWG)
  • Tightening Torque: 2 N*m (18 In-lbs)
  • Connection Direction: Bi-directional (Power from top or bottom)
  • Contact Position Indicator: Integrated visual indicator (Yes)
  • Protection Degree: IP20

Environmental Specifications

  • Ambient Operating Temperature: -5°C to +40°C (with daily average ≤35°C)
  • Storage Temperature: -25°C to +70°C
  • Reference Temperature for Tripping: 30°C
  • Pollution Degree: 2
  • Temperature Compensation: Coefficient ranges from 1.20 at -10°C to 0.85 at 60°C

Physical Dimensions

  • Width: 36 mm
  • Height: 86 mm
  • Total Depth: 77.1 mm
  • Protrusion from Rail: 45 mm

Standard Compliance & Certification

  • International Standard: IEC/EN 61009-1
  • Certifications: CE, KEMA-KEUR

CHINT 20A 2-Pole B-Curve A-Type RCBO (NB310L-2P-B20) – Data Sheet

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Product Product subtotal Quantity Price Product subtotal
CHINT 20A 2-Pole B-Curve A-Type RCBO (NB310L-2P-B20)
CHINT 20A 2-Pole B-Curve A-Type RCBO (NB310L-2P-B20)NB310L-2P-B20
CHINT 20A 2-Pole B-Curve A-Type RCBO (NB310L-2P-B20)NB310L-2P-B20
£41.28/ea		 £0.00
£41.28/ea £0.00