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RCBO 3P+N C Curve 40A 30mA Type A 10kA NB3L Chint

BRAND: CABAC
SKU: 479976
$175.80 List price: $234.40
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Chint NB3L RCBO features 3P+N 40A C curve, 10kA breaking capacity, 30mA Type A earth leakage protection, DIN rail mount. Ideal for final subcircuits.

Alternatively Known As: Four-pole RCBO, three-phase RCBO with switched neutral, residual current circuit breaker with overcurrent protection

Technical Specifications
  • Model: NB3L-40
  • Configuration: 3P+N with switched neutral pole
  • Rated Current: 40A
  • Tripping Curve: C curve
  • Residual Current Type: Type A
  • Rated Residual Current: 30mA
  • Rated Voltage: AC 400/415V
  • Rated Frequency: 50/60Hz
  • Rated Short-Circuit Capacity: 10kA
  • Rated Insulation Voltage: 500V
  • Rated Impulse Withstand Voltage: 4kV
  • Breaking Time at Rated Residual Current: ≤0.1s
  • Terminal Capacity: Up to 25mm² cable
  • Mounting: 35mm DIN rail with fast clip device
  • Ingress Protection: IP20
  • Compliance: IEC/EN 61009-1
  • Dimensions (H x L x W): 82.4mm x 71mm x 77mm
  • Weight: 0.5 kg
Key Features
  • Combines overload, short-circuit and earth leakage protection in one device
  • Type A residual current detection responds to sinusoidal AC and pulsating DC leakage currents
  • C curve protection is suitable for mixed resistive and inductive loads with moderate inrush current
  • Three protected phases with switched neutral pole
  • 10kA rated short-circuit breaking capacity
  • DIN rail mounting for modular switchboards and distribution boards
  • Contact position indication
  • Top or bottom connection arrangement
Professional Installation Requirements
  • Installation, testing and commissioning must be performed by a licensed electrician in accordance with AS/NZS 3000 and applicable electrical safety requirements. The RCBO must be selected and coordinated with the circuit design, prospective fault current and enclosure requirements.
Applications
  • Final subcircuits in residential switchboards
  • Commercial and light industrial distribution boards
  • Three-phase circuits supplying mixed resistive and inductive loads
  • Protection of circuits supplying motors, pumps, air-conditioning equipment and general power loads
  • Personnel and equipment protection against overload, short circuit and earth leakage faults
Standards & Compliance
  • AS/NZS 61009.1:2015
  • RCM approval under the Australian Electrical Equipment Safety System
Environmental Benefits
  • Complies with EU RoHS 2.0 requirements restricting hazardous substances
  • Integrated protection combines circuit breaker and residual current functions in one modular device, reducing separate component requirements
  • Durable DIN rail construction supports serviceability and replacement without changing the complete switchboard assembly
Warranty Information

CHINT specifies an 18-month quality guarantee period for the NB3L-40 product. Warranty claims are subject to the manufacturer’s authorised sales channels, installation requirements and applicable terms.

Available Now

Available through authorised CHINT distributors in Australia.

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