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MCCB 3P 125A 150kA Magnetic Only 250A Frame NM8N Chint

BRAND: CABAC
SKU: 271445
$3,110.10 List price: $4,146.80
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Chint NM8N 125A 3P MCCB features 150kA breaking capacity, magnetic-only trip unit for motor protection and a 250A frame. Ideal for switchboard mains protection.

Alternatively Known As: CHINT NM8N-250R-M 125A 3P MCCB, magnetic motor-protection circuit breaker, moulded-case circuit breaker

Technical Specifications
  • Frame Size: 250A
  • Rated Current: 125A
  • Number of Poles: 3P
  • Trip Unit: Magnetic-only motor protection
  • Ultimate Short-Circuit Breaking Capacity: 150kA at 380/400/415V AC
  • Service Short-Circuit Breaking Capacity: 150kA at 380/400/415V AC
  • Rated Operational Voltage: 380/400/415V AC, with higher-voltage ratings available by configuration
  • Rated Insulation Voltage: 1000V AC
  • Rated Impulse Withstand Voltage: 8kV
  • Utilisation Category: A
  • Connection Type: Fixed front or rear connection, 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
  • Standard Product Designation: NM8N-250R-M-125-3P configuration
  • Dimensions (H x L x W): 157mm x 88mm x 105mm
  • Weight: 1.85 kg
Key Features
  • 150kA high breaking capacity at 415V AC
  • Magnetic-only trip unit designed for motor circuit short-circuit protection
  • 250A frame with a 125A rated current
  • Three-pole moulded-case circuit breaker construction
  • Suitable for fixed front or rear connection arrangements
  • Can be installed vertically or horizontally with top or bottom line entry
  • Magnetic-only protection should be coordinated with a separate overload protection device for motor applications
Professional Installation Requirements
  • Installation, adjustment and commissioning must be carried out by a licensed electrician in accordance with AS/NZS 3000 and the manufacturer's instructions. Magnetic-only motor protection must be correctly coordinated with the motor starter, overload relay, cabling and prospective fault current. Verify Australian approval and RCM requirements before installation.
Applications
  • Industrial motor control panels
  • Motor short-circuit protection systems
  • Commercial and industrial switchboards
  • High-fault-level mains and sub-main protection where separate overload protection is provided
  • Low-voltage distribution systems requiring high breaking capacity
Standards & Compliance
  • Applicable product standard: AS/NZS IEC 60947.2:2015 for low-voltage circuit-breakers
  • Installation should comply with AS/NZS 3000:2018 Electrical installations
  • CHINT documentation declares conformity with IEC/EN 60947-2; confirm Australian certification and RCM status for the specific configuration before use
Environmental Benefits
  • Long mechanical and electrical service life can reduce replacement frequency and product waste
  • Metallic conductive components and the moulded enclosure can be separated for recycling at end of service life
  • RoHS documentation is available for the NM8N product range, supporting restriction of hazardous substances
Warranty Information

CHINT's general warranty policy covers other low-voltage apparatus for 27 months from the date of manufacture when sold through authorised channels, subject to contract terms and exclusions for improper installation, misuse or unauthorised modification.

Available Now

Available through authorised CHINT distributors in Australia.

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