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6A B Curve Type A 2P RCBO (NB310L-2P-B06)

The CHINT 6A B Curve Type A 2P RCBO (NB310L-2P-B06) combines earth leakage and overcurrent protection in one compact device. Ideal for consumer units and distribution boards, it helps protect circuits from overload, short circuits and residual current faults.

Dual Protection in One Unit: Provides both RCD and circuit breaker protection for improved electrical safety. Type A Sensitivity: Detects AC and pulsating DC leakage, suitable for modern appliances and electronics. B Curve Response: Quick tripping for everyday electrical loads and general circuits. Compact DIN Rail Design: Fits standard UK consumer units and saves installation space. Trusted CHINT Quality: Built to recognised safety standards for long-term reliability.
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SKU: NB310L-2P-B06
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Product Details

The 6A B Curve Type A 2P RCBO (Model NB310L-2P-B06) from CHINT delivers reliable circuit protection in a compact and easy-to-install unit. Designed to protect both people and electrical systems, this device combines the functions of a residual current device and a circuit breaker to guard against earth leakage, overload and short-circuit faults in one product.

Built to IEC/EN 61009-1 standards, this RCBO is suitable for residential, commercial and light industrial installations. The Type A tripping function detects both AC and pulsating DC residual currents, making it ideal for circuits that supply modern electronic equipment such as LED lighting, washing machines and kitchen appliances.

The B curve characteristic provides fast response for general purpose circuits with standard electrical loads, helping prevent damage caused by short circuits or overloads. With a 6A rated current, this model is perfect for lower-amperage circuits that require dedicated protection without unnecessary power interruption.

This 2-pole RCBO offers full isolation for both live and neutral conductors, improving safety during maintenance and fault conditions. Its compact DIN rail design fits easily into standard UK consumer units and distribution boards, helping installers achieve neat, compliant installations.

CHINT is known for dependable electrical products built to recognised safety standards. The NB310L-2P-B06 is no exception, offering consistent performance, long service life and peace of mind for both electricians and property owners.

Whether you are upgrading an existing electrical system or specifying protection for a new project, this RCBO provides an effective, space-saving solution that meets modern safety requirements.

Product Specifications

Electrical Specifications

  • Rated Current (In): 6A
  • 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

Shipping & Collection

Tracked Delivery (Currently 1-3 business days):

  • Free over £250.
  • £5.99 for orders under £250.
  • £5.99 for orders under £50.

Next Business Day Delivery:

  • £15 Flat Rate.

Collection:

  • Free to collect from our warehouse.

Pre-Order:

  • 5-10 Business Days delivery unless otherwise stated.

Shipping Policy

Datasheets
6A B Curve Type A 2P RCBO (NB310L-2P-B06) - Data Sheet
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