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MCB 1P 50A 6kA D Curve DIN Rail NB1-63 Chint

BRAND: CABAC
SKU: 179638
$10.40 List price: $13.80
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Chint NB1-63 1P 50A 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 miniature circuit breaker, single-pole D50 MCB, DIN rail circuit breaker

Technical Specifications
  • Rated Current: 50A
  • Number of Poles: 1P
  • Tripping Characteristic: D curve
  • Rated Voltage: 230/400V AC or 240/415V AC
  • Rated Frequency: 50/60Hz
  • Rated Breaking Capacity: 6kA under IEC/EN 60898-1
  • Insulation Voltage: 500V
  • Impulse Withstand Voltage: 4kV
  • Energy Limiting Class: 3
  • Protection Degree: IP20
  • Terminal Capacity: 1–25mm² cable
  • Terminal Tightening Torque: 2.0N·m
  • Mounting: 35mm EN 60715 DIN rail
  • Electrical Life: 4,000 operations
  • Mechanical Life: 10,000 operations
  • Dimensions (H x L x W): 86mm x 78mm x 18mm
  • Weight: 0.11 kg
Key Features
  • Thermal-magnetic overcurrent and short-circuit protection
  • D-curve operation suited to circuits with high starting or inrush currents
  • 6kA short-circuit breaking capacity
  • Single-pole design for compact switchboard layouts
  • Fast-clip mounting on standard 35mm DIN rail
  • Cable and pin-type busbar compatible
  • Line and load connections permitted from either direction
  • Visible contact position indication
Professional Installation Requirements
  • Installation, testing and replacement must be performed by a licensed electrician in accordance with AS/NZS 3000 and applicable electrical safety requirements.
Applications
  • Domestic consumer units and distribution boards
  • Commercial switchboards and final subcircuits
  • Motor, transformer and other high-inrush-load circuits
  • General low-voltage AC overcurrent protection
  • DIN rail power distribution assemblies
Standards & Compliance
  • Certified product family to AS/NZS 60898.1:2004 under Global-Mark certificate GMA-516904-EA
  • Current Australian/New Zealand product standard for AC miniature circuit-breakers: AS/NZS 60898.1:2024
  • Installation and selection should comply with AS/NZS 3000
Environmental Benefits
  • Resettable protection avoids routine replacement of single-use fuses, reducing consumable waste
  • Long mechanical operating life can reduce replacement frequency
  • Metal and thermoplastic components may be recyclable at end of service life where suitable facilities accept them
Warranty Information

CHINT warranty policy provides 27 months from the date of manufacture for other low-voltage apparatus sold through authorised channels; contract-specific terms may vary.

Available Now

Available through authorised CHINT distributors in Australia.

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