Trade Discount 25%
MCB 3P 25A 6kA B Curve DIN Rail NB1-63 Chint
Chint NB1-63 3P 25A MCB features 6kA breaking capacity, B-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/B25-3P-6, 3P B25 MCB, Three-Phase DIN Rail Circuit Breaker
Technical Specifications
- Rated Current: 25A
- Number of Poles: 3P
- Tripping Characteristic: B curve
- Rated Breaking Capacity: 6kA
- Rated Voltage: 230/400V AC or 240/415V AC
- Rated Frequency: 50/60Hz
- Insulation Voltage: 500V
- Impulse Withstand Voltage: 4kV
- Protection Type: Thermal-magnetic overload and short-circuit protection
- Mounting: 35mm DIN rail to EN 60715
- Connection: Cable, U-type busbar or pin-type busbar
- Terminal Capacity: Up to 25mm² cable
- Ingress Protection: IP20
- Reference Product Code: 179689
- Dimensions (H x L x W): 86mm x 78mm x 54mm
- Weight: 0.33 kg
Key Features
- Three-pole protection and isolation for three-phase circuits
- B-curve thermal-magnetic release characteristic
- 6kA short-circuit breaking capacity
- Suitable for residential, commercial and light industrial distribution boards
- Compatible with standard 35mm DIN rail mounting
- Top or bottom electrical connection
- Accepts compatible busbar systems
- Visible contact position indication
- Compact three-module construction
Professional Installation Requirements
- Installation and connection must be carried out by a licensed electrician in accordance with AS/NZS 3000 and applicable local electrical requirements. Confirm fault levels, cable sizing, discrimination and enclosure suitability before installation.
Applications
- Residential distribution boards
- Commercial switchboards
- Three-phase lighting and power circuits
- HVAC and equipment control panels
- Overload and short-circuit protection in low-voltage AC installations
Standards & Compliance
- AS/NZS 60898.1:2024, applicable to circuit-breakers for overcurrent protection in household and similar AC installations
- AS/NZS 3000:2018, applicable to electrical installation and wiring practices
- CHINT NB1-63 product documentation references IEC/EN 60898-1 and IEC/EN 60947-2; verify required Australian approval marking for the intended installation
Environmental Benefits
- Long service life can reduce replacement frequency and associated material waste
- Copper and other metallic components can be recovered through established electrical equipment recycling streams
- RoHS-related product documentation supports reduction of restricted hazardous substances
Warranty Information
CHINT warranty policy specifies 27 months from the date of manufacture for other low-voltage apparatus, subject to sale through authorised channels and applicable warranty conditions.
Available Now
Available through authorised CHINT distributors in Australia.
