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MCB 3P 25A 10kA B Curve DIN Rail NB1-63H Chint

BRAND: CABAC
SKU: 179857
$82.40 List price: $109.90
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Chint NB1-63H 3P 25A MCB features 10kA breaking capacity, B-curve thermal-magnetic protection and DIN rail mount to IEC 60898. For domestic and commercial boards.

Alternatively Known As: 3P MCB, 25A Circuit Breaker, DIN Rail Circuit Breaker, Thermomagnetic Circuit Breaker

Technical Specifications
  • Model: NB1-63H
  • Poles: 3P
  • Rated Current: 25 A
  • Tripping Curve: B curve, 3–5 x In
  • Breaking Capacity: 10 kA
  • Rated Voltage: AC 230/400–240/415 V
  • Rated Frequency: 50/60 Hz
  • Rated Insulation Voltage: 500 V
  • Energy Limiting Class: 3
  • Impulse Withstand Voltage: 6 kV
  • Protection Degree: IP20
  • Terminal Capacity: Up to 25 mm²
  • Mounting: 35 mm DIN rail to EN 60715
  • Connection: Top or bottom feed
  • Mechanical Life: 20,000 operations
  • Electrical Life: 10,000 operations
  • Contact Position Indicator: Yes
  • Accessories: Auxiliary contact, shunt release, under-voltage release and alarm contact compatible
  • Dimensions (H x L x W): 86.6mm x 78mm x 54mm
  • Weight: 0.33 kg
Key Features
  • Three-pole protection for three-phase AC circuits
  • B-curve thermomagnetic protection for general-purpose and longer cable applications
  • 10 kA short-circuit breaking capacity
  • Compact modular design for distribution boards and control panels
  • Suitable for residential, commercial and industrial electrical distribution systems
  • Top or bottom cable connection
  • Compatible with cable, U-type busbar and pin-type busbar connections
  • DIN rail fast-clip mounting
  • IP20 protection for installation inside suitable enclosures
Professional Installation Requirements
  • Installation, selection and testing should be carried out by a licensed electrician in accordance with AS/NZS 3000 and the manufacturer's instructions. Confirm the prospective fault current, system voltage and coordination with upstream and downstream protective devices before installation.
Applications
  • Residential distribution boards
  • Commercial switchboards
  • Industrial control panels
  • Three-phase final circuits
  • Overload and short-circuit protection for AC distribution circuits
  • Electrical equipment and control systems requiring B-curve protection
Standards & Compliance
  • AS/NZS 60898.1:2024 is the applicable Australian/New Zealand standard for AC miniature circuit-breakers of this type; verify the product's local approval and marking before installation
  • IEC/EN 60898-1
  • EN 60715 for 35 mm DIN rail mounting
  • AS/NZS 3000 installation requirements apply to the completed electrical installation
Environmental Benefits
  • Long mechanical and electrical service life can reduce replacement frequency and associated material waste
  • Metal conductive parts and thermoplastic housing materials can be separated for recycling at end of service life where suitable recycling facilities are available
  • Thermomagnetic protection helps prevent damage to connected wiring and equipment, reducing premature replacement
  • No refrigerant or consumable operating medium is required
Warranty Information

CHINT warranty policy provides 27 months from the date of manufacture against defects in materials and workmanship for other low-voltage apparatus sold through authorised sales channels. Contract terms may vary.

Available Now

Available through authorised CHINT distributors in Australia.

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