Trade Discount 25%
MCB 2P 40A 10kA D Curve DIN Rail NB1-63H Chint
Chint NB1-63H 2P 40A MCB features 10kA breaking capacity, D-curve thermal-magnetic protection and DIN rail mount to IEC 60898. For domestic and commercial boards.
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Alternatively Known As: CHINT NB1-63H D40 2P MCB, 40A DIN Rail Circuit Breaker, Double-Pole Thermal-Magnetic Circuit Breaker
Technical Specifications
- Device Type: Miniature circuit breaker with thermal-magnetic protection
- Number of Poles: 2P
- Rated Current: 40 A
- Tripping Curve: D curve, instantaneous trip at approximately 10–14 times rated current
- Rated Voltage: 400 V AC for 2P configuration
- Rated Frequency: 50/60 Hz
- Rated Breaking Capacity: 10 kA
- Insulation Voltage: 500 V
- Energy Limiting Class: Class 3
- Terminal Capacity: Up to 25 mm² copper conductors
- Terminal Tightening Torque: 2.0 N·m
- Protection Degree: IP20
- Electrical Life: Up to 10,000 operations
- Mechanical Life: Up to 20,000 operations
- Mounting: 35 mm EN 60715 DIN rail
- Connection: Suitable for cable, U-type busbar and pin-type busbar connections
- Dimensions (H x L x W): 86mm x 78mm x 36mm
- Weight: 0.2 kg
Key Features
- Two-pole protection for overload and short-circuit faults
- D-curve characteristic suited to circuits with high inrush current
- 10 kA short-circuit breaking capacity
- Thermal-magnetic release mechanism
- Positive contact position indication
- DIN rail mounting with fast-clip installation
- Top or bottom connection capability
- Suitable for domestic, commercial and industrial distribution boards
- Compatible with auxiliary contacts, alarm contacts, shunt releases and undervoltage releases
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 fault level, cable capacity, discrimination and required Australian approval markings before installation.
Applications
- Domestic distribution boards
- Commercial switchboards
- Industrial electrical distribution systems
- Circuits supplying transformers, motors and other loads with high starting or inrush current
- DIN rail protection in control panels and final distribution boards
Standards & Compliance
- IEC/EN 60898-1 product standard reference
- AS/NZS 60898.1:2024 is the applicable Australian and New Zealand standard for AC miniature circuit-breakers in household and similar installations
Environmental Benefits
- Helps reduce equipment damage and premature replacement by providing overload and short-circuit protection
- Contains metal components that can be recovered through appropriate electrical and e-waste recycling streams
- Long mechanical and electrical service life can reduce replacement frequency and material waste
Warranty Information
CHINT's general policy lists a 27-month warranty from the date of manufacture for other low-voltage apparatus, subject to authorised sales channels, contract terms and exclusions including incorrect installation or misuse.
Available Now
Available through authorised CHINT distributors in Australia.
