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MCB 3P 50A 6kA B Curve DIN Rail NB1-63 Chint

BRAND: CABAC
SKU: 179694
$49.00 List price: $65.40
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Chint NB1-63 3P 50A MCB features 6kA breaking capacity, B-curve thermal-magnetic protection and DIN rail mount to IEC 60898. For domestic and commercial boards.

Alternatively Known As: 3P MCB, Three-Phase Miniature Circuit Breaker, DIN Rail Circuit Breaker, Thermal-Magnetic Circuit Breaker

Technical Specifications
  • Product Series: NB1-63
  • Number of Poles: 3P
  • Rated Current: 50A
  • Trip Curve: B curve
  • Rated Voltage: 230/400V AC and 240/415V AC
  • Rated Frequency: 50/60Hz
  • Breaking Capacity: 6kA under IEC/EN 60898-1
  • Insulation Voltage: 500V
  • Impulse Withstand Voltage: 4kV
  • Energy Limiting Class: 3
  • Protection Degree: IP20
  • Terminal Capacity: Up to 25mm² cable
  • Tightening Torque: 2.0N·m
  • Electrical Life: 10,000 operations
  • Mechanical Life: 20,000 operations
  • Mounting: 35mm DIN rail to EN 60715
  • Dimensions (H x L x W): 86.6mm x 78.1mm x 54mm
  • Weight: 0.33 kg
Key Features
  • Three-pole protection for multi-phase circuits
  • B-curve thermal-magnetic overload and short-circuit protection
  • 6kA rated short-circuit breaking capacity
  • Suitable for domestic, commercial and general distribution boards
  • DIN rail mounting with fast-clip installation
  • Contact position indicator for clear ON/OFF status
  • Top or bottom cable and busbar connection
  • Compatible with selected CHINT NB1-63 accessories
Professional Installation Requirements
  • Installation and connection should be carried out by a licensed electrician in accordance with AS/NZS 3000 and the manufacturer's instructions. Confirm fault levels, conductor sizing, discrimination and local approval requirements before commissioning.
Applications
  • Domestic distribution boards
  • Commercial electrical switchboards
  • Three-phase final circuits
  • General low-voltage power distribution
  • Overload and short-circuit protection for compatible AC circuits
Standards & Compliance
  • AS/NZS 60898.1:2024 is the applicable Australian/New Zealand product standard for AC miniature circuit-breakers; confirm product-specific conformity and RCM documentation before installation.
  • Installation should comply with AS/NZS 3000 wiring rules.
Environmental Benefits
  • Long service life helps reduce replacement frequency and associated electrical waste
  • Replaceable modular construction allows the protective device to be renewed without replacing the complete switchboard
  • Metal components can be recovered through appropriate electrical equipment recycling streams
  • Overload and fault protection can help prevent premature damage to connected equipment
Warranty Information

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

Available Now

Available through authorised CHINT distributors in Australia.

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