Trade Discount 25%
MCB 2P 25A 6kA C Curve DIN Rail NB1-63 Chint
Chint NB1-63 2P 25A 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: CHINT NB1-63 2P C25 MCB, 25A DIN Rail Circuit Breaker, C25 Thermal-Magnetic Circuit Breaker
Technical Specifications
- Product Series: NB1-63
- Number of Poles: 2P
- Rated Current: 25 A
- Tripping Curve: C curve, 5–10 × In magnetic trip range
- Rated Voltage: 400 V AC
- Rated Frequency: 50/60 Hz
- Breaking Capacity: 6 kA
- Short-Circuit Service Capacity: 6 kA
- Insulation Voltage: 500 V
- Impulse Withstand Voltage: 4 kV
- Mounting: TH35-7.5 DIN rail
- Connection: Top or bottom feed
- Terminal Capacity: 1–25 mm² cable
- Terminal Tightening Torque: 2.0 N·m
- Protection Function: Overload, short-circuit and isolation protection
- Ingress Protection: IP20
- Operating Temperature: -5°C to +40°C
- Mechanical Life: 20,000 operations
- Electrical Life: 4,000 operations
- Manufacturer Standard: IEC/EN 60898-1
- Dimensions (H x L x W): 86mm x 78mm x 36mm
- Weight: 0.356 kg
Key Features
- Two-pole switching and protection
- C-curve thermal-magnetic trip characteristic for mixed loads and moderate inrush currents
- 6 kA short-circuit breaking capacity
- Compact 2-module DIN rail format
- Suitable for domestic, commercial and light industrial distribution boards
- Top or bottom cable connection
- Compatible with selected NB1-63 auxiliary, alarm, shunt-release and undervoltage accessories
Professional Installation Requirements
- Installation and connection must be carried out by a licensed electrician in accordance with applicable Australian electrical regulations, including AS/NZS 3000. Confirm fault levels, cable sizing, discrimination and product approval requirements before installation.
Applications
- Domestic switchboards and distribution boards
- Commercial electrical panels
- Lighting and socket outlet circuits
- Mixed resistive and inductive loads
- Small motor and HVAC control circuits where a C-curve breaker is specified
- Overload and short-circuit protection for low-voltage AC circuits
Standards & Compliance
- AS/NZS 60898.1:2024 is the applicable Australian/New Zealand standard for AC miniature circuit-breakers in this rating range; product documentation specifies IEC/EN 60898-1, so Australian approval and RCM requirements should be confirmed before installation.
Environmental Benefits
- Long mechanical and electrical service life can reduce replacement frequency and associated waste
- Provides circuit protection that can help prevent damage to downstream electrical equipment
- Metal and polymer components may be recoverable through appropriate electrical equipment recycling streams at end of life
Warranty Information
CHINT's general warranty policy lists 27 months from the date of manufacture for other low-voltage apparatus sold through authorised sales channels. Contract terms and local distributor conditions may vary.
Available Now
Available through authorised CHINT distributors in Australia.
