Trade Discount 25%
MCCB 4P 315A 36kA Thermal Magnetic 400A Frame NM8N Chint
Chint NM8N 315A 4P MCCB features 36kA breaking capacity, thermal-magnetic trip unit with protected neutral and a 400A frame. Ideal for switchboard mains protection.
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Alternatively Known As: Moulded Case Circuit Breaker, MCCB, Thermal-Magnetic Circuit Breaker, Main Circuit Breaker
Technical Specifications
- Series: NM8N
- Rated Current: 315A
- Frame Size: 400A
- Number of Poles: 4P
- Trip Unit: Thermal-magnetic
- Neutral Protection: Protected neutral
- Rated Ultimate Breaking Capacity: 36kA at 380/400/415V AC
- Rated Service Breaking Capacity: 36kA at 380/400/415V AC
- Rated Operational Voltage: Up to 690V AC, 50/60Hz
- Rated Insulation Voltage: 1000V
- Rated Impulse Withstand Voltage: 8kV
- Utilisation Category: A
- Mounting: Fixed, plug-in or DIN-rail options subject to configuration
- Mechanical Life: Up to 25,000 operating cycles
- Electrical Life: Up to 10,000 operating cycles at 415V AC and rated current
- Operating Temperature: -40°C to +70°C
- Ingress Protection: IP40 when correctly installed
- Dimensions (H x L x W): 157mm x 88.7mm x 140mm
- Weight: 2.5 kg
Key Features
- Four-pole protection for three-phase systems with neutral switching
- Thermal-magnetic overload and short-circuit protection
- 400A frame accommodates a 315A rated current
- 36kA breaking capacity at typical Australian low-voltage system voltages
- Suitable for switchboard mains and sub-main protection
- Supports isolation functions when installed and configured appropriately
- Compact moulded-case construction for commercial and industrial switchboards
Professional Installation Requirements
- Installation, testing and commissioning must be performed by a licensed electrician in accordance with AS/NZS 3000, the manufacturer's instructions and applicable switchboard requirements. Confirm fault levels, conductor sizing, discrimination and RCM or local approval requirements before installation.
Applications
- Main incoming protection in commercial switchboards
- Sub-main protection in industrial distribution boards
- Protection of low-voltage three-phase distribution circuits
- Commercial buildings, industrial plants and data-centre power distribution
- Retrofitting or upgrading compatible CHINT NM8N switchboard assemblies
Standards & Compliance
- AS/NZS 60947.2: Low-voltage switchgear and controlgear – circuit-breakers, as the applicable Australian and New Zealand product standard
- AS/NZS 3000: Electrical installations, applicable to installation and wiring practices
- CHINT documentation specifies compliance with IEC 60947-2; verify Australian approval and RCM requirements for the selected supply configuration
Environmental Benefits
- Moulded-case construction and metal conductors can be separated for responsible end-of-life recycling
- Long mechanical and electrical service life can reduce replacement frequency and material waste
- RoHS documentation is available for the NM8N product family, supporting reduced use of restricted hazardous substances
Warranty Information
CHINT warranty policy specifies 27 months from the date of manufacture for other low-voltage apparatus sold through authorised channels. Contract terms and Australian distributor conditions may vary.
Available Now
Available through authorised CHINT distributors in Australia.
