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MCCB 4P 250A 36kA Thermal Magnetic 250A Frame NM8N Chint

BRAND: CABAC
SKU: 271158
$1,058.80 List price: $1,411.70
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Chint NM8N 250A 4P MCCB features 36kA breaking capacity, thermal-magnetic trip unit with protected neutral and a 250A frame. Ideal for switchboard mains protection.

Alternatively Known As: CHINT NM8N-250C TM 250A 4P MCCB, Moulded Case Circuit Breaker, Main Circuit Breaker

Technical Specifications
  • Device Type: Moulded Case Circuit Breaker (MCCB)
  • Frame Size: 250A
  • Rated Current: 250A
  • Number of Poles: 4P, protected neutral
  • Trip Unit: Thermal-magnetic, TM
  • Ultimate Breaking Capacity: 36kA at 380/400/415V AC
  • Rated Operational Voltage: Up to 690V AC
  • Rated Insulation Voltage Ui: 1000V
  • Rated Impulse Withstand Voltage Uimp: 8kV
  • Utilisation Category: A
  • Installation Type: Fixed
  • Mechanical Durability: Up to 25,000 operating cycles
  • Electrical Durability: Up to 10,000 operating cycles at 415V AC and rated current
  • Operating Temperature: -40°C to +70°C
  • Dimensions (H x L x W): 157mm x 88.7mm x 140mm
  • Weight: 2.5 kg
Key Features
  • 250A frame and 250A rated current
  • Four-pole configuration with overcurrent-protected neutral
  • Thermal-magnetic overload and short-circuit protection
  • 36kA ultimate and service short-circuit breaking capacity at 380/400/415V AC
  • Suitable for isolation
  • Adjustable thermal and magnetic trip settings
  • Designed for low-voltage power distribution and switchboard applications
  • Zero arcing distance design
Professional Installation Requirements
  • Installation, termination, testing and commissioning must be carried out by a licensed electrician in accordance with the manufacturer's instructions, AS/NZS 3000 and the requirements of the completed switchboard assembly.
Applications
  • Main incoming protection in commercial switchboards
  • Industrial power distribution boards
  • Building services and plant-room switchboards
  • Protection of feeders and submains
  • Low-voltage distribution systems requiring protected neutral switching
Standards & Compliance
  • Designed to IEC/EN 60947-2 for low-voltage circuit-breakers; Australian installations should verify compliance with AS/NZS IEC 60947.2 and applicable EESS and RCM requirements before use.
Environmental Benefits
  • Long mechanical and electrical service life can reduce replacement frequency and associated material waste
  • Metal and thermoplastic components can be recovered through appropriate electrical equipment recycling at end of service life
  • Supports efficient fault protection and isolation of low-voltage electrical distribution systems
Warranty Information

CHINT warranty policy for other low-voltage apparatus provides 27 months from the date of manufacture against defects in materials and workmanship when sold through authorised channels; contractual or local distributor conditions may apply.

Available Now

Available through authorised CHINT distributors in Australia.

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