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MCB 2P 20A 6kA D Curve DIN Rail NB1-63 Chint

BRAND: CABAC
SKU: 179674
$18.40 List price: $24.50
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Chint NB1-63 2P 20A 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: 2-Pole MCB, Thermal-Magnetic Circuit Breaker, DIN Rail Circuit Breaker, NB1-63/D20-2P-6

Technical Specifications
  • Poles: 2P
  • Rated Current: 20 A
  • Rated Voltage: 230/400 V AC
  • Rated Frequency: 50/60 Hz
  • Breaking Capacity: 6 kA
  • Service Breaking Capacity: 6 kA
  • Ultimate Breaking Capacity: 10 kA
  • Trip Characteristic: D curve, 10–14 times rated current
  • Insulation Voltage: 500 V AC
  • Impulse Withstand Voltage: 4 kV
  • Energy Limiting Class: 3
  • Protection Rating: IP20
  • Terminal Capacity: Up to 25 mm² copper conductor
  • Terminal Tightening Torque: 2.0 N·m
  • Mounting: TH35-7.5 DIN rail
  • Mechanical Life: 20,000 operations
  • Electrical Life: 4,000 operations
  • Power Dissipation: 7.0 W
  • Dimensions (H x L x W): 86mm x 78mm x 36mm
  • Weight: 0.22 kg
Key Features
  • Thermal-magnetic protection against overload and short-circuit conditions
  • D-curve tripping characteristic for circuits with high inrush currents
  • 6 kA rated short-circuit breaking capacity
  • Two-pole switching for simultaneous circuit isolation
  • Suitable for residential, commercial and light industrial distribution boards
  • Top or bottom cable feed connection
  • Compatible with selected CHINT auxiliary, alarm, shunt-release and undervoltage accessories
Professional Installation Requirements
  • Installation, testing and commissioning must be performed by a licensed electrician in accordance with AS/NZS 3000, applicable electrical safety regulations and the manufacturer's instructions.
Applications
  • Domestic distribution boards
  • Commercial switchboards
  • Light industrial control and distribution panels
  • Circuits supplying motors, transformers, pumps and other high-inrush loads
  • Overload and short-circuit protection in low-voltage AC installations
Standards & Compliance
  • Designed to IEC/EN 60898-1 for circuit-breakers used in household and similar installations
  • AS/NZS 60898.1:2024 is the applicable Australian/New Zealand product standard category; verify the specific unit's Australian approval, RCM marking and EESS registration before installation
Environmental Benefits
  • Metal and thermoplastic components can be separated for appropriate end-of-life recycling
  • Long mechanical and electrical service life can reduce replacement frequency and associated material waste
  • Modular DIN rail construction supports targeted replacement of the protective device rather than disposal of the complete switchboard assembly
Warranty Information

Warranty coverage is subject to CHINT's applicable product warranty and authorised distributor terms. Confirm the current warranty period and conditions at purchase.

Available Now

Available through authorised CHINT distributors in Australia.

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