Trade Discount 25%
MCB 3P 20A 6kA B Curve DIN Rail NB1-63 Chint
Chint NB1-63 3P 20A 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 NB1-63B3P20, 3P 20A MCB, Three-Phase DIN Rail Circuit Breaker, Thermal-Magnetic Circuit Breaker
Technical Specifications
- Model: NB1-63B3P20
- Rated Current: 20A
- Number of Poles: 3P
- Tripping Characteristic: B curve, thermal-magnetic
- Rated Voltage: 230/400V AC or 240/415V AC
- Rated Frequency: 50/60Hz
- Rated Breaking Capacity: 6kA
- Insulation Voltage: 500V
- Impulse Withstand Voltage: 4kV
- Energy Limiting Class: 3
- Protection Degree: IP20
- Electrical Life: 10,000 operations
- Mechanical Life: 20,000 operations
- Terminal Capacity: Up to 25mm² cable or 10mm² busbar
- Terminal Tightening Torque: 2.0N·m
- Mounting: 35mm EN 60715 DIN rail
- Connection: Top or bottom
- Accessories: Auxiliary contact, shunt release, undervoltage release and alarm contact compatible
- Dimensions (H x L x W): 86mm x 78mm x 54mm
- Weight: 0.33 kg
Key Features
- Three-pole protection for three-phase circuits
- B-curve thermal-magnetic overcurrent protection
- 6kA short-circuit breaking capacity
- DIN rail mounting for modular switchboards
- Suitable for residential, commercial and light industrial distribution boards
- Visible contact position indication
- Compatible with cable, U-type busbar and pin-type busbar connections
- Operating ambient temperature range from -35°C to +70°C
Professional Installation Requirements
- Installation, testing and commissioning must be performed by a licensed electrician in accordance with AS/NZS 3000 and the equipment manufacturer's instructions. Confirm fault levels, discrimination and local approval requirements before installation.
Applications
- Three-phase residential distribution boards
- Commercial switchboards and final distribution boards
- Lighting and heating circuits with low inrush current
- General overcurrent and short-circuit protection
- Modular electrical control and distribution assemblies
Standards & Compliance
- IEC/EN 60898-1
- Applicable Australian/New Zealand circuit-breaker standard: AS/NZS 60898.1
Environmental Benefits
- Reusable resettable protection reduces reliance on single-use fuses
- Long mechanical and electrical service life can reduce replacement frequency and material waste
- Compact DIN rail construction supports efficient switchboard material use
Warranty Information
CHINT warranty policy generally provides 27 months from the date of manufacture for other low-voltage apparatus, subject to authorised sales channels, applicable terms and proof of purchase.
Available Now
Available through authorised CHINT distributors in Australia.
