Trade Discount 25%
MCB 2P 20A 6kA C Curve DIN Rail NB1-63 Chint
Chint NB1-63 2P 20A MCB features 6kA breaking capacity, C-curve thermal-magnetic protection and DIN rail mount to IEC 60898. For domestic and commercial boards.
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Alternatively Known As: NB1-63 2P C20 MCB, 20A Double-Pole Circuit Breaker, DIN Rail MCB, Thermal-Magnetic Circuit Breaker
Technical Specifications
- Rated Current: 20 A
- Number of Poles: 2P
- Tripping Curve: C curve, 5–10 In
- Rated Voltage: 400 V AC for 2-pole configuration
- Rated Frequency: 50/60 Hz
- Breaking Capacity: 6 kA Icn and Ics
- Insulation Voltage: 500 V Ui
- Impulse Withstand Voltage: 4 kV Uimp
- Mounting: TH35-7.5 DIN rail
- Connection: Top or bottom feed
- Terminal Capacity: 1–25 mm²
- Terminal Tightening Torque: 2.0 N·m
- Ingress Protection: IP20
- Mechanical Life: 20,000 operations
- Electrical Life: 4,000 operations
- Operating Temperature: -5 °C to +40 °C
- Dimensions (H x L x W): 82mm x 75.5mm x 36mm
- Weight: 0.4 kg
Key Features
- Thermal-magnetic protection against overload and short-circuit faults
- C-curve characteristic suited to mixed loads and circuits with moderate starting currents
- Two-pole switching for simultaneous disconnection of active and neutral conductors where required
- Compact modular design for domestic, commercial and light-industrial distribution boards
- DIN rail mounting for straightforward installation in compatible switchboards
- Top or bottom cable entry for flexible board layouts
- Compatible with selected CHINT auxiliary, alarm, shunt-release and undervoltage accessories
Professional Installation Requirements
- Installation and connection to mains wiring must be performed by a licensed electrician in accordance with AS/NZS 3000 and applicable local requirements. Confirm prospective fault current, discrimination and conductor protection before installation.
Applications
- Domestic distribution boards
- Commercial switchboards
- Light-industrial control and distribution panels
- Overload and short-circuit protection for final subcircuits
- Isolation of low-voltage AC circuits
Standards & Compliance
- Applicable product standard: AS/NZS 60898.1:2024 for circuit-breakers for overcurrent protection in household and similar AC installations
- Installation should comply with AS/NZS 3000 Wiring Rules
- Manufacturer specification is listed to IEC/EN 60898-1; verify the supplied unit has the required Australian regulatory marking and approvals before installation
Environmental Benefits
- Long mechanical and electrical service life can reduce replacement frequency and associated waste
- Metal components and thermoplastics may be recoverable through appropriate electrical equipment recycling streams
- REACH-related substance information is available for the NB1-63 series
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, subject to applicable contract terms.
Available Now
Available through authorised CHINT distributors in Australia.
