Trade Discount 25%
MCCB 4P 250A 100kA Thermal Magnetic 250A Frame NM8N Chint
Chint NM8N 250A 4P MCCB features 100kA breaking capacity, thermal-magnetic trip unit with protected neutral and a 250A frame. For switchboard mains protection.
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Alternatively Known As: 4-Pole Moulded Case Circuit Breaker, 250A MCCB, 100kA MCCB, Protected-Neutral MCCB
Technical Specifications
- Product Type: Moulded case circuit breaker
- Frame Current: 250A
- Rated Current: 250A
- Poles: 4P
- Trip Unit: Adjustable thermal-magnetic
- Breaking Capacity: 100kA at 380/400/415V AC
- Rated Operational Voltage: Up to 690V AC, 50/60Hz
- Rated Insulation Voltage: 1000V
- Rated Impulse Withstand Voltage: 8kV
- Neutral Protection: Protected neutral pole
- Thermal Trip Adjustment: 0.7–1.0 x In
- Magnetic Trip Adjustment: 5–10 x In for 180–250A power-distribution ratings
- Utilisation Category: A
- Mounting: Fixed type
- Standard Basis: IEC/EN 60947-2
- Dimensions (H x L x W): 157mm x 88.7mm x 140mm
- Weight: 2.5 kg
Key Features
- 100kA ultimate short-circuit breaking capacity at 380/400/415V AC
- Four-pole configuration for three-phase and neutral switching
- Adjustable thermal-magnetic overload and short-circuit protection
- Protected neutral suitable for switchboard incomer and mains-protection applications
- Suitable for isolation
- Zero arcing distance design
- Mechanical life of up to 25,000 operating cycles
- Electrical life of up to 10,000 cycles at 415V AC and rated current
Professional Installation Requirements
- Installation, selection and commissioning must be performed by a licensed electrician in accordance with the Wiring Rules, switchboard requirements, manufacturer instructions and applicable electrical safety regulations. Verify the required RCM/EESS status before installation in Australia.
Applications
- Switchboard mains protection
- Commercial and industrial low-voltage distribution
- Three-phase power-distribution incomers
- Protection of cables, electrical equipment and downstream circuits
- Industrial buildings, commercial facilities and data centres
Standards & Compliance
- Applicable Australian/New Zealand product standard: AS/NZS IEC 60947.2 for low-voltage circuit-breakers; the product documentation specifies IEC/EN 60947-2.
- Installation and selection must also satisfy AS/NZS 3000 and any applicable switchboard assembly requirements under AS/NZS 61439.
- Australian supply requires verification of applicable EESS and Regulatory Compliance Mark requirements; IEC/CE documentation alone does not confirm Australian compliance.
Environmental Benefits
- RoHS documentation for the NM8N series supports reduced use of restricted hazardous substances
- Durable moulded-case construction and long mechanical life can reduce replacement frequency and product waste
- Metal components and thermoplastics may be recyclable through appropriate electrical-equipment recycling streams
Warranty Information
CHINT's general warranty policy provides 27 months from the date of manufacture for other low-voltage apparatus, subject to authorised sales channels, product conditions and any applicable customer contract.
Available Now
Available through authorised CHINT distributors in Australia.
