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RCBO 1P+N B Curve 40A 30mA Type A 6kA NB3LEG Chint

BRAND: CABAC
SKU: 312404
$50.60 List price: $67.40
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Chint NB3LEG RCBO features 1P+N 40A B curve, 6kA breaking capacity, 30mA Type A earth leakage protection, DIN rail mount. Ideal for final subcircuits.

Alternatively Known As: 1P+N RCBO, Residual Current Circuit Breaker with Overcurrent Protection, Safety Switch with Circuit Breaker

Technical Specifications
  • Rated Current: 40 A
  • Pole Configuration: 1P+N with uninterrupted neutral
  • Tripping Curve: B curve, 3–5 × rated current
  • Residual Current Type: Type A, AC and pulsating DC detection
  • Rated Residual Operating Current: 30 mA
  • Rated Voltage: 240 V AC
  • Rated Frequency: 50 Hz
  • Rated Short-Circuit Capacity: 6 kA
  • Residual Making and Breaking Capacity: 3 kA
  • Tripping Technology: Electronic
  • Break Time at Rated Residual Current: Less than 0.1 seconds
  • Rated Impulse Withstand Voltage: 4 kV
  • Insulation Voltage: 500 V
  • Terminal Capacity: Up to 16 mm² cable or 10 mm² busbar
  • Mounting: 35 mm DIN rail to EN 60715
  • Protection Degree: IP20
  • Contact Position Indicator: Yes
  • Dimensions (H x L x W): 98mm x 77mm x 18mm
  • Weight: 0.3 kg
Key Features
  • Combines overload, short-circuit and earth leakage protection in one device
  • Type A residual current detection for AC and pulsating DC leakage currents
  • B-curve operation suited to final subcircuits and circuits with low inrush current
  • 1P+N switching configuration with uninterrupted neutral
  • 6 kA rated short-circuit capacity
  • Compact one-module DIN rail format
  • Quick clip-on DIN rail mounting
  • Compatible with cable, U-type busbar and pin-type busbar connections
  • Suitable for residential and commercial distribution boards
Professional Installation Requirements
  • Installation, testing and commissioning must be performed by a licensed electrician in accordance with AS/NZS 3000 and the manufacturer's instructions. Verify the prospective fault current, circuit cable rating, neutral arrangement and compatibility with the distribution board before installation.
Applications
  • Final subcircuits in residential switchboards
  • Lighting and general-purpose power circuits
  • Residential distribution boards
  • Commercial low-voltage distribution systems
  • Protection of mixed electronic, resistive and inductive loads
Standards & Compliance
  • AS/NZS 61009.1:2015 for residual current operated circuit-breakers with integral overcurrent protection
  • Installation in accordance with AS/NZS 3000 Wiring Rules
  • Australian SAA certification listed for the NB3LEG-40 series; confirm current RCM and responsible-supplier registration before sale or installation
Environmental Benefits
  • Combines two protection functions in one compact device, reducing switchboard component count and material use
  • Long mechanical and electrical service life can reduce replacement frequency and electrical equipment waste
  • Metal and thermoplastic components may be recoverable through appropriate electrical equipment recycling streams
Warranty Information

CHINT's general policy provides a 27-month warranty from the date of manufacture for other low-voltage apparatus sold through authorised channels, subject to the applicable sales contract and exclusions for incorrect installation, misuse or unauthorised modification.

Available Now

Available through authorised CHINT distributors in Australia.

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