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MCB 3P 25A 6kA D Curve DIN Rail NB1-63 Chint

BRAND: CABAC
SKU: 179717
$40.70 List price: $54.20
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Chint NB1-63 3P 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: 3P 25A MCB, D25 MCB, Three-Phase DIN Rail Circuit Breaker, Thermal-Magnetic Circuit Breaker

Technical Specifications
  • Rated Current: 25 A
  • Number of Poles: 3P
  • Trip Characteristic: D curve
  • Rated Voltage: 230/400 V AC or 240/415 V AC
  • Rated Frequency: 50/60 Hz
  • Rated Breaking Capacity: 6 kA
  • Insulation Voltage: 500 V
  • Impulse Withstand Voltage: 4 kV
  • Energy Limiting Class: 3
  • Protection Degree: IP20
  • Terminal Capacity: Up to 25 mm² cable or 10 mm² busbar
  • Terminal Tightening Torque: 2.0 N·m
  • Mounting: 35 mm DIN rail to EN 60715
  • Connection: Top or bottom
  • Electrical Life: 10,000 operations
  • Mechanical Life: 20,000 operations
  • Dimensions (H x L x W): 86mm x 78mm x 54mm
  • Weight: 0.33 kg
Key Features
  • Three-pole protection for three-phase AC circuits
  • D-curve thermal-magnetic release for circuits with high inrush current
  • 6 kA short-circuit breaking capacity
  • DIN rail mounting for modular switchboards and distribution boards
  • Visual contact position indication
  • Compatible with CHINT auxiliary contacts, shunt releases, undervoltage releases and alarm contacts
  • Suitable for residential, commercial and light industrial distribution applications
Professional Installation Requirements
  • Installation and connection should be performed by a licensed electrician in accordance with AS/NZS 3000, the equipment instructions and local electrical regulations. Confirm prospective fault current, conductor sizing, discrimination and required Australian approval markings before installation.
Applications
  • Three-phase domestic distribution boards
  • Commercial switchboards and distribution panels
  • Control circuits and machinery with high starting currents
  • Motor, transformer and power-supply circuits where D-curve protection is appropriate
  • General low-voltage AC overcurrent and short-circuit protection
Standards & Compliance
  • Applicable product standard: AS/NZS 60898.1 for circuit-breakers for overcurrent protection in household and similar AC installations
  • Manufacturer-stated international product standards: IEC/EN 60898-1 and IEC/EN 60947-2
  • Installation should comply with AS/NZS 3000; verify the specific unit's Australian approval and RCM requirements before use
Environmental Benefits
  • Long mechanical and electrical service life can reduce replacement frequency and associated waste
  • Metal electrical components and the thermoplastic enclosure may be recyclable through suitable electrical-equipment recycling facilities at end of life
  • Thermal and short-circuit protection helps prevent damage to downstream wiring and equipment, reducing avoidable material loss
Warranty Information

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

Available Now

Available through authorised CHINT distributors in Australia.

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