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MCCB 3P 250A 100kA Thermal Magnetic 400A Frame NM8N Chint

BRAND: CABAC
SKU: 268971
$3,176.30 List price: $4,235.00
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Chint NM8N 250A 3P MCCB features 100kA breaking capacity, thermal-magnetic trip unit and a 400A frame. Ideal for switchboard mains and sub-mains protection.

Alternatively Known As: CHINT NM8N-400H-250/3/23 MCCB, 250A 3P moulded case circuit breaker, 100kA MCCB, thermal-magnetic circuit breaker

Technical Specifications
  • Product Type: Moulded case circuit breaker
  • Model: NM8N-400H-250/3/23
  • Rated Current: 250 A
  • Frame Size: 400 A
  • Number of Poles: 3P
  • Trip Unit: Thermal-magnetic release
  • Breaking Capacity: 100 kA at AC 380–415 V
  • Rated Operational Voltage: 380/400/415 V AC, with series capability up to 690 V AC
  • Rated Insulation Voltage: 1000 V
  • Rated Impulse Withstand Voltage: 8 kV
  • Utilisation Category: A
  • Installation: Fixed mounting with front or rear connection options
  • Mechanical Durability: Up to 25,000 operating cycles
  • Electrical Durability: Up to 10,000 cycles at AC 415 V
  • Dimensions (H x L x W): 255mm x 113mm x 140mm
  • Weight: 5 kg
Key Features
  • High 100kA short-circuit breaking capacity
  • 400A frame with a 250A rated current
  • Thermal-magnetic overload and short-circuit protection
  • Three-pole configuration for three-phase distribution systems
  • Suitable for switchboard mains and sub-mains protection
  • Supports isolation and fixed installation arrangements
  • Zero arcing distance design for compact switchboard integration
Professional Installation Requirements
  • Installation, testing and commissioning must be performed by a licensed electrician in accordance with applicable Australian electrical installation requirements, manufacturer instructions and the switchboard design. Protection settings and fault ratings must be verified before energisation.
Applications
  • Main incoming protection in low-voltage switchboards
  • Sub-main protection in commercial and industrial distribution boards
  • Three-phase power distribution systems
  • Industrial plant and machinery supply protection
  • Data centre, infrastructure and building services switchboards
Standards & Compliance
  • AS/NZS IEC 60947.2:2015 for low-voltage circuit-breakers
Environmental Benefits
  • Provides long service life, reducing replacement frequency and associated material waste
  • Metallic and thermoplastic components can be separated for appropriate end-of-life recycling where facilities are available
  • Thermal-magnetic protection helps limit equipment damage and extend the service life of downstream electrical systems
Warranty Information

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

Available Now

Available through authorised CHINT distributors in Australia.

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