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MCB 2P 40A 6kA B Curve DIN Rail NB1-63 Chint

BRAND: CABAC
SKU: 179651
$18.40 List price: $24.50
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Chint NB1-63 2P 40A 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: 2-Pole MCB, Thermal-Magnetic Circuit Breaker, DIN Rail Circuit Breaker, NB1-63 B40 2P MCB

Technical Specifications
  • Rated Current: 40 A
  • Poles: 2P
  • Tripping Characteristic: B curve
  • Rated Breaking Capacity: 6 kA
  • Rated Voltage: 400/415 V AC
  • Rated Frequency: 50/60 Hz
  • Insulation Voltage: 500 V
  • Impulse Withstand Voltage: 4 kV
  • Energy Limiting Class: 3
  • Protection Degree: IP20
  • Electrical Life: 10,000 operations
  • Mechanical Life: 20,000 operations
  • Terminal Capacity: Up to 25 mm² cable
  • Tightening Torque: 2.0 N·m
  • Mounting: 35 mm DIN rail
  • Connection: Top or bottom entry
  • Dimensions (H x L x W): 86mm x 78mm x 36mm
  • Weight: 0.128 kg
Key Features
  • Thermal-magnetic protection against overload and short circuit conditions
  • B-curve characteristic suitable for domestic and general commercial circuits
  • 6 kA rated short-circuit breaking capacity
  • Two-pole switching and circuit protection
  • Compatible with standard 35 mm DIN rail mounting
  • Top or bottom cable connection
  • Contact position indication
  • Accessory-compatible design for auxiliary, shunt, undervoltage and alarm contacts
Professional Installation Requirements
  • Installation, testing and commissioning must be performed by a licensed electrician in accordance with AS/NZS 3000 and applicable local electrical regulations. Verify system fault levels, conductor sizing and RCM requirements before installation.
Applications
  • Domestic switchboards and distribution boards
  • Commercial electrical panels
  • General lighting and power circuits
  • Overload and short-circuit protection in low-voltage AC installations
  • DIN rail control and protection assemblies
Standards & Compliance
  • AS/NZS 60898.1:2004 certification listed for the CHINT NB1-63 series, including the 2-pole 40 A B-curve configuration
Environmental Benefits
  • Thermoplastic housing and metal conductive components can be separated for appropriate end-of-life recycling
  • Long mechanical and electrical service life can reduce replacement frequency and product waste
  • RoHS declarations are available for the NB1-63 product family
Warranty Information

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

Available Now

Available through authorised CHINT distributors in Australia.

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