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

BRAND: CABAC
SKU: 179707
$40.70 List price: $54.20
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Chint NB1-63 3P 40A MCB features 6kA breaking capacity, C-curve thermal-magnetic protection and DIN rail mount to IEC 60898. For domestic and commercial boards.

Alternatively Known As: 3P MCB, Three-Phase Miniature Circuit Breaker, DIN Rail Circuit Breaker, Thermal-Magnetic Circuit Breaker

Technical Specifications
  • Poles: 3P
  • Rated Current: 40 A
  • Tripping Curve: C curve, 5–10 times rated current
  • Rated Voltage: 400 V AC
  • Rated Frequency: 50/60 Hz
  • Breaking Capacity: 6 kA
  • Short-Circuit Service Capacity: 6 kA
  • Insulation Voltage: 500 V
  • Impulse Withstand Voltage: 4 kV
  • Mounting: TH35-7.5 DIN rail
  • Terminal Capacity: 1–25 mm²
  • Terminal Tightening Torque: 2.0 N·m
  • Protection Degree: IP20
  • Mechanical Life: 20,000 operations
  • Electrical Life: 4,000 operations
  • Connection: Top or bottom feed
  • Dimensions (H x L x W): 82mm x 75.5mm x 54mm
  • Weight: 0.4 kg
Key Features
  • Thermal-magnetic protection against overload and short circuits
  • C-curve operation suited to mixed loads and circuits with moderate inrush current
  • Three-pole switching for three-phase distribution circuits
  • 6 kA rated short-circuit breaking capacity
  • DIN rail mounting for modular switchboards and distribution boards
  • Can be used for circuit isolation and switching under normal operating conditions
  • Compatible with selected auxiliary, alarm, shunt-release and undervoltage accessories
Professional Installation Requirements
  • Installation and connection must be performed by a licensed electrician in accordance with AS/NZS 3000, the switchboard manufacturer's instructions and applicable electrical safety regulations. Confirm prospective fault current, cable capacity, discrimination and thermal derating before selection.
Applications
  • Residential distribution boards
  • Commercial switchboards
  • Light industrial control and distribution panels
  • Three-phase final sub-circuits
  • Protection of mixed-load circuits with moderate starting currents
Standards & Compliance
  • Designed to IEC/EN 60898-1; verify Australian certification and Regulatory Compliance Mark requirements before installation
  • Installation to AS/NZS 3000 Wiring Rules
Environmental Benefits
  • Long mechanical and electrical service life can reduce replacement frequency and associated waste
  • Metal and thermoplastic components may be recoverable through appropriate electrical equipment recycling at end of life
  • Compact DIN rail construction reduces material use compared with larger protection devices serving equivalent applications
Warranty Information

CHINT's general policy for other low-voltage apparatus provides 27 months from the date of manufacture against defects in materials and workmanship when purchased through authorised sales channels, subject to the applicable contract and warranty terms.

Available Now

Available through authorised CHINT distributors in Australia.

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