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MCB 3P 20A 10kA D Curve DIN Rail NB1-63H Chint

BRAND: CABAC
SKU: 179884
$82.40 List price: $109.90
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Chint NB1-63H 3P 20A MCB features 10kA breaking capacity, D-curve thermal-magnetic protection and DIN rail mount to IEC 60898. For domestic and commercial boards.

Alternatively Known As: 3P MCB, 20A D-Curve Circuit Breaker, DIN Rail Circuit Breaker, Thermomagnetic Miniature Circuit Breaker

Technical Specifications
  • Product Series: NB1-63H
  • Rated Current: 20 A
  • Number of Poles: 3P
  • Rated Voltage: 400 V AC line-to-line
  • Rated Frequency: 50/60 Hz
  • Breaking Capacity: 10 kA
  • Tripping Characteristic: D curve, 10–20 times rated current
  • Protection Type: Thermal-magnetic overload and short-circuit protection
  • Product Standard: IEC/EN 60898-1
  • Rated Insulation Voltage: 500 V
  • Rated Impulse Withstand Voltage: 6 kV
  • Energy Limiting Class: 3
  • Terminal Capacity: Up to 25 mm²
  • Tightening Torque: 2.5 N·m
  • Mounting: 35 mm EN 60715 DIN rail
  • Connection: Top or bottom feed
  • Protection Degree: IP20
  • Mechanical Life: 20,000 operations
  • Electrical Life: 10,000 operations
  • Reference Ambient Temperature: 30 °C
  • Operating Temperature: -25 °C to +70 °C
  • Dimensions (H x L x W): 86mm x 78mm x 54mm
  • Weight: 0.356 kg
Key Features
  • Three-pole protection for three-phase AC circuits
  • D-curve tripping characteristic for circuits with high inrush currents
  • 10 kA short-circuit breaking capacity
  • Thermal-magnetic protection against overloads and short circuits
  • Compact three-module DIN rail format
  • Top or bottom supply connection
  • Compatible with cable, U-type busbar and pin-type busbar connections
  • Suitable for residential, commercial and industrial distribution boards
Professional Installation Requirements
  • Installation, testing and commissioning must be carried out by a licensed electrician in accordance with applicable Australian electrical requirements, including AS/NZS 3000. Verify system fault levels, conductor sizing, discrimination and local conformity requirements before installation.
Applications
  • Three-phase residential distribution boards
  • Commercial switchboards and consumer units
  • Industrial control panels and final distribution systems
  • Motor and transformer circuits with elevated starting or inrush current
  • Overload and short-circuit protection for AC branch circuits
Standards & Compliance
  • AS/NZS 60898.1:2024 is the applicable Australian/New Zealand standard for AC circuit-breakers for household and similar installations; the product is identified to IEC/EN 60898-1, so local conformity and RCM requirements should be verified before Australian installation.
  • AS/NZS 3000:2018 applies to selection, installation and verification within Australian electrical installations.
Environmental Benefits
  • Durable modular construction can extend service life and reduce replacement waste.
  • Metal components are recyclable through appropriate electrical equipment recycling streams.
  • Thermal-magnetic protection can help prevent equipment damage and premature replacement following overload or short-circuit events.
Warranty Information

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

Available Now

Available through authorised CHINT distributors in Australia.

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