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MCB 2P 25A 6kA D Curve DIN Rail NB1-63 Chint

BRAND: CABAC
SKU: 179675
$18.40 List price: $24.50
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Chint NB1-63 2P 25A 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 D25 2P MCB, 2-Pole DIN Rail Circuit Breaker, Thermal-Magnetic Circuit Breaker

Technical Specifications
  • Product Series: NB1-63
  • Rated Current: 25 A
  • Number of Poles: 2P
  • Rated Voltage: 400 V AC
  • Rated Frequency: 50/60 Hz
  • Breaking Capacity: 6 kA
  • Tripping Characteristic: D curve, 10–14 × In instantaneous magnetic release
  • Insulation Voltage: 500 V
  • Impulse Withstand Voltage: 4 kV
  • Terminal Capacity: 1–25 mm² cable
  • Terminal Tightening Torque: 2.0 N·m
  • Mounting: 35 mm TH35 DIN rail
  • Connection: Top or bottom feed; cable, U-type busbar or pin-type busbar
  • Protection Degree: IP20
  • Energy Limiting Class: 3
  • Mechanical Life: 20,000 operations
  • Electrical Life: 4,000 operations
  • Operating Temperature: -5 °C to +40 °C
  • Dimensions (H x L x W): 82mm x 75.5mm x 36mm
  • Weight: 0.22 kg
Key Features
  • Thermal-magnetic overload and short-circuit protection
  • D-curve operation for circuits with high inrush currents, including transformers and motors
  • 6 kA short-circuit breaking capacity
  • Two-pole switching for compact distribution-board protection
  • Compact two-module DIN rail format
  • Dual terminal arrangement for cable and busbar connections
  • Compatible with selected NB1-63 auxiliary, alarm, shunt-trip and undervoltage accessories
  • Suitable for residential, commercial and light industrial distribution boards
Professional Installation Requirements
  • Installation, selection and testing must be performed by a licensed electrical contractor in accordance with AS/NZS 3000 and applicable local regulatory requirements. Confirm the D-curve characteristic, fault level, discrimination and enclosure suitability before installation.
Applications
  • Residential distribution boards
  • Commercial switchboards
  • Light industrial control and distribution panels
  • Protection of transformer and motor circuits with high starting currents
  • Overload and short-circuit protection for low-voltage AC circuits
Standards & Compliance
  • AS/NZS 60898.1 is the applicable Australian/New Zealand product standard for miniature circuit breakers of this type; verify the specific product approval and RCM requirements before use.
  • AS/NZS 3000 applies to selection, installation and testing within Australian electrical installations.
  • Manufacturer documentation specifies IEC/EN 60898-1; Australian acceptance should be confirmed for the intended installation and jurisdiction.
Environmental Benefits
  • Long mechanical and electrical service life can reduce replacement frequency and associated material waste.
  • Metal and engineering-polymer components may be recoverable through appropriate electrical equipment recycling streams.
  • DIN rail construction supports straightforward replacement and maintenance without replacing the complete distribution assembly.
Warranty Information

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

Available Now

Available through authorised CHINT distributors in Australia.

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