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MCB 3P 40A 6kA D Curve DIN Rail NB1-63 Chint

BRAND: CABAC
SKU: 179721
$40.70 List price: $54.20
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Chint NB1-63 3P 40A MCB features 6kA breaking capacity, D-curve thermal-magnetic protection and DIN rail mount to IEC 60898. For domestic and commercial boards.

Alternatively Known As: CHINT NB1-63 3P D40 6kA MCB, Three-Phase DIN Rail Circuit Breaker, D40 Miniature Circuit Breaker

Technical Specifications
  • Product Series: NB1-63
  • Poles: 3P
  • Rated Current: 40 A
  • Rated Voltage: 400 V AC
  • Rated Frequency: 50/60 Hz
  • Breaking Capacity: 6 kA
  • Tripping Curve: D curve, 10–14 times rated current
  • Insulation Voltage: 500 V
  • Impulse Withstand Voltage: 4 kV
  • Mounting: TH35-7.5, 35 mm DIN rail
  • Terminal Capacity: 1–25 mm²
  • Connection: Top or bottom feed
  • Ingress Protection: IP20
  • Mechanical Life: 20,000 operations
  • Electrical Life: 4,000 operations
  • Operating Temperature: -5 °C to +40 °C
  • Reference Product Code: 180377
  • Dimensions (H x L x W): 82mm x 75.5mm x 54mm
  • Weight: 0.32 kg
Key Features
  • Thermal-magnetic overload and short-circuit protection
  • Three-pole switching for three-phase circuits
  • D-curve characteristic suited to high-inrush loads such as transformers and motors
  • 6 kA rated breaking capacity
  • Positive isolation and contact position indication
  • Top or bottom cable connection
  • Compact modular DIN rail format
  • Compatible with selected auxiliary, alarm, shunt-release and undervoltage accessories
Professional Installation Requirements
  • Installation, testing and commissioning should be performed by a licensed electrician in accordance with AS/NZS 3000 and the switchboard manufacturer's requirements. Confirm prospective fault current, cable sizing, discrimination and the required RCM or approval status before use.
Applications
  • Domestic switchboards and distribution boards
  • Commercial electrical distribution boards
  • Three-phase motor and transformer circuits with high inrush current
  • Final sub-circuit overcurrent protection
  • Low-voltage AC control and power distribution systems
Standards & Compliance
  • AS/NZS 60898.1:2024 — applicable standard for circuit-breakers for overcurrent protection in household and similar installations; confirm approval for the exact supplied variant before Australian installation
  • IEC/EN 60898-1 — manufacturer's declared product standard
Environmental Benefits
  • Metal components and thermoplastic housing materials can be recovered through appropriate electrical equipment recycling streams
  • Long mechanical and electrical service life can reduce replacement frequency and associated material waste
  • No refrigerant or other direct greenhouse-gas handling function
  • Compact DIN rail construction reduces material use compared with larger enclosed switching equipment
Warranty Information

CHINT warranty policy provides 27 months from the date of manufacture for other low-voltage apparatus sold through authorised sales channels, subject to the applicable sales contract and warranty conditions.

Available Now

Available through authorised CHINT distributors in Australia.

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