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MCCB 4P 225A 70kA Thermal Magnetic 250A Frame NM8N Chint

BRAND: CABAC
SKU: 271211
$1,522.00 List price: $2,029.30
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30 Days Return Electricians Unlock Trade Access
Chint NM8N 225A 4P MCCB features 70kA breaking capacity, thermal-magnetic trip unit with protected neutral and a 250A frame. Ideal for switchboard mains protection.

Alternatively Known As: CHINT NM8N-250Q MCCB, 4-Pole Moulded Case Circuit Breaker, Main Switchboard Circuit Breaker

Technical Specifications
  • Product Type: Moulded case circuit breaker
  • Frame Size: 250A
  • Rated Current: 225A
  • Number of Poles: 4P
  • Trip Unit: Thermal-magnetic, TM
  • Breaking Capacity: 70kA at 380/415V AC
  • Rated Operational Voltage: 380/415V AC
  • Rated Insulation Voltage: 1000V AC
  • Rated Impulse Withstand Voltage: 8kV
  • Neutral Protection: Protected neutral configuration
  • Utilisation Category: A
  • Standard Series: IEC 60947-2
  • Installation: Fixed mounting with top or bottom line entry
  • Mechanical Life: Up to 25,000 operating cycles
  • Electrical Life: Up to 10,000 operating cycles at 415V AC and rated current
  • Dimensions (H x L x W): 157mm x 88.7mm x 140mm
  • Weight: 2.5 kg
Key Features
  • 225A thermal-magnetic overload and short-circuit protection
  • 250A frame size for high-current low-voltage distribution
  • 70kA ultimate short-circuit breaking capacity at 380/415V AC
  • Four-pole switching for three-phase and neutral systems
  • Protected neutral suitable for switchboard mains protection
  • Suitable for vertical or horizontal installation
  • Top or bottom line entry options
  • Can be used for isolation when correctly selected and installed
  • Optional accessories include auxiliary contacts, shunt trip, undervoltage release, motor operator and terminal covers
Professional Installation Requirements
  • Installation, testing and commissioning must be performed by a licensed electrician in accordance with the manufacturer's instructions, AS/NZS 3000 and applicable switchboard requirements. Confirm fault level, discrimination, cable capacity, neutral protection settings and Australian certification before energising.
Applications
  • Main switchboard incoming protection
  • Commercial and industrial low-voltage distribution boards
  • Three-phase distribution systems with neutral switching
  • Industrial plant and equipment protection
  • Data centre and infrastructure power distribution
  • High fault-level switchboard applications
Standards & Compliance
  • Applicable Australian and New Zealand standard: AS/NZS IEC 60947.2:2015 for low-voltage circuit-breakers
  • Manufacturer series specification references IEC 60947-1 and IEC 60947-2; verify local RCM and project approval requirements for the selected variant
Environmental Benefits
  • Long operating life can reduce replacement frequency and associated waste
  • Thermal-magnetic protection helps prevent damage to downstream electrical equipment during overload and short-circuit events
  • Metal and polymer components may be recoverable for recycling at end of service life, subject to local recycling facilities
Warranty Information

CHINT warranty policy for other low-voltage apparatus provides 27 months from the date of manufacture when purchased through authorised sales channels, subject to contract terms and applicable local conditions.

Available Now

Available through authorised CHINT distributors in Australia.

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