Trade Discount 25%
MCB 1P 50A 6kA C Curve DIN Rail NB1-63 Chint
Chint NB1-63 1P 50A 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: 50A single-pole MCB, C50 circuit breaker, DIN-rail miniature circuit breaker
Technical Specifications
- Rated Current: 50 A
- Number of Poles: 1P
- Tripping Curve: C curve, 5–10 x In magnetic trip range
- Rated Voltage: 230 V AC for 1P applications
- Rated Frequency: 50/60 Hz
- Breaking Capacity: 6 kA
- Rated Service Short-Circuit Capacity: 6 kA
- Insulation Voltage: 500 V
- Impulse Withstand Voltage: 4 kV
- Mounting: TH35-7.5 mm DIN rail
- Terminal Capacity: 1–25 mm² copper conductors
- Terminal Tightening Torque: 2.0 N·m
- Ingress Protection: IP20
- Mechanical Life: 20,000 operations
- Electrical Life: 4,000 operations
- Connection: Top or bottom feed
- Dimensions (H x L x W): 86mm x 78mm x 18mm
- Weight: 0.118 kg
Key Features
- Thermal-magnetic overload and short-circuit protection
- C-curve characteristic suitable for mixed resistive and inductive loads with moderate inrush current
- Single-pole configuration for compact distribution-board installation
- 6 kA short-circuit breaking capacity
- DIN-rail mounting with fast-clip installation
- Can be used for circuit isolation and infrequent switching
- Compatible with selected auxiliary, alarm, shunt-release and undervoltage accessories
Professional Installation Requirements
- Installation and commissioning must be performed by a licensed electrician in accordance with AS/NZS 3000, applicable equipment requirements and the manufacturer's instructions. Confirm prospective fault current, cable capacity, discrimination and local approval requirements before installation.
Applications
- Domestic distribution boards
- Commercial switchboards
- Lighting and general power circuits
- Mixed resistive and inductive loads
- Low-voltage electrical distribution systems
Standards & Compliance
- AS/NZS 60898.1:2024 is the applicable Australian/New Zealand standard for this type of a.c. miniature circuit breaker; verify that the specific imported product variant carries the required Australian approval and RCM marking before installation.
- AS/NZS 3000 applies to selection, installation and wiring practices in Australian electrical installations.
Environmental Benefits
- Long mechanical and electrical service life can reduce replacement frequency and associated material waste.
- Thermal-magnetic protection can limit damage to wiring and connected equipment during overloads and short-circuit events.
- Metal components and thermoplastic housing materials may be recoverable through appropriate electrical equipment recycling streams at end of life.
Warranty Information
CHINT's general warranty policy covers other low-voltage apparatus for 27 months from the date of manufacture when purchased through authorised sales channels, subject to contract terms and exclusions.
Available Now
Available through authorised CHINT distributors in Australia.
