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6A B Curve 30mA A Type 6KA 1P+N RCBO (NB3LEG-B06)

Compact 6A RCBO with Type A earth leakage and B curve overcurrent protection. Combines RCD and MCB functions in one 1P+N module with 30mA sensitivity and 6kA breaking capacity. Ideal for safe circuit protection in residential and light commercial units.

Dual Protection in One Unit: Combines residual current and overcurrent protection to keep circuits safe and compliant. Type A Sensitivity: Detects both AC and pulsating DC leakage, suited for modern electronics. Reliable Tripping: B curve characteristic offers accurate overcurrent reaction without nuisance trips. Strong Breaking Capacity: 6kA capacity handles significant fault currents safely. Space Saving Design: Compact 1P+N module ideal for consumer units with limited space.
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SKU: NB3LEG-B06
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Product Details

The 6A B Curve 30mA A Type 6KA 1P+N RCBO is a compact and reliable electrical protection device designed for modern consumer units and distribution boards. This RCBO, also known as a Residual Current Breaker with Overcurrent protection, combines both earth leakage detection and overcurrent protection in a single module, giving you efficient safeguard against electric shock and circuit overload on a dedicated circuit.

Built to industry standards, this device offers a 6 amp rated current and B curve tripping characteristic that responds quickly to overcurrent without false tripping under normal loads. The Type A residual current detection provides protection against both alternating and pulsating direct current faults, making it suitable for circuits with modern electronics and motorised appliances.

With a 30mA sensitivity, this RCBO reliably detects leakage currents that could indicate a potentially dangerous fault to earth. Its 6kA fault breaking capacity ensures it can deal with significant fault currents safely, protecting both your electrical system and connected appliances.

The 1 Pole + Neutral (1P+N) configuration simplifies installation into standard DIN rail consumer units, helping to save space while maintaining high protection standards. Its compact design is ideal for both residential and light commercial installations where safety, reliability, and space economy are essential.

Whether you are wiring new circuits or upgrading existing ones, the CHINT NB3LEG-B06 RCBO offers dependable performance and peace of mind with combined protection in a single unit.

Product Specifications

Electrical Specifications

  • Rated Current (In): 6A
  • 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

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 30mA A Type 6KA 1P+N RCBO (NB3LEG-B06) - Data Sheet
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