Trade Discount 25%
MCB 3P 50A 6kA D Curve DIN Rail NB1-63 Chint
Chint NB1-63 3P 50A MCB features 6kA 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: 3P 50A D50 MCB, Three-Pole DIN Rail Circuit Breaker, NB1-63 D50 MCB
Technical Specifications
- Product Series: NB1-63
- Device Type: Miniature circuit breaker
- Number of Poles: 3P
- Rated Current: 50 A
- Trip Curve: D curve
- Rated Voltage: 400 V AC
- Rated Frequency: 50/60 Hz
- Breaking Capacity: 6 kA
- Insulation Voltage: 500 V AC
- Impulse Withstand Voltage: 4 kV
- Protection Rating: IP20
- DIN Rail Width: 3 modules, 54 mm
- Reference Standard: IEC/EN 60898-1
- Electrical Connection: Suitable for copper conductors up to 25 mm²
- Terminal Tightening Torque: 2.0 N·m
- Electrical and Mechanical Life: Up to 10,000 electrical and 20,000 mechanical operations
- Dimensions (H x L x W): 86mm x 78mm x 54mm
- Weight: 0.379 kg
Key Features
- Three-pole protection for three-phase circuits
- D-curve thermal-magnetic trip characteristic for circuits with higher inrush currents
- 6 kA rated short-circuit breaking capacity
- DIN rail mounting for modular switchboards and distribution boards
- Protects against overload and short-circuit current
- Compatible with selected CHINT NB1-series auxiliary, alarm, shunt-trip and undervoltage accessories
- Suitable for domestic, commercial and light industrial distribution applications
Professional Installation Requirements
- Installation, testing and commissioning should be performed by a licensed electrician in accordance with applicable Australian wiring rules, switchboard requirements and the manufacturer's instructions. Confirm the product's Australian approval and suitability for the intended installation before energising.
Applications
- Three-phase domestic distribution boards
- Commercial switchboards
- Light industrial control and distribution panels
- Protection of three-phase final subcircuits
- Circuits supplying motors, transformers and other loads with higher starting current, where a D curve is appropriately selected
Standards & Compliance
- AS/NZS 60898.1:2024 is the applicable Australian/New Zealand standard for circuit-breakers for overcurrent protection in household and similar installations; verify product-specific Australian approval and RCM requirements before installation.
- Manufacturer-declared reference: IEC/EN 60898-1
Environmental Benefits
- Thermal-magnetic protection can help prevent damage to wiring and connected equipment, reducing premature replacement and material waste.
- Metal and thermoplastic components may be recoverable through appropriate electrical equipment recycling channels at end of service.
- Designed for repeated switching and long mechanical service life, supporting reduced replacement frequency.
Warranty Information
CHINT warranty policy for other low-voltage apparatus provides coverage against defects in materials and workmanship for 27 months from the date of manufacture when supplied through authorised sales channels, subject to the applicable warranty terms.
Available Now
Available through authorised CHINT distributors in Australia.
