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MCCB 3P 40A 150kA Magnetic Only 125A Frame NM8N Chint

BRAND: CABAC
SKU: 271875
$1,389.60 List price: $1,852.80
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Chint NM8N 40A 3P MCCB features 150kA breaking capacity, magnetic-only trip unit for motor protection and a 125A frame. Ideal for switchboard mains protection.

Alternatively Known As: NM8N-125R M 40A 3P MCCB, Motor Protection MCCB, Magnetic-Only Moulded Case Circuit Breaker

Technical Specifications
  • Breaker Type: Moulded case circuit breaker
  • Series: NM8N
  • Frame Size: 125A
  • Rated Current: 40A
  • Number of Poles: 3P
  • Trip Unit: Magnetic-only electromagnetic release
  • Rated Operational Voltage: Up to 690V AC
  • Rated Insulation Voltage: 1000V AC
  • Rated Impulse Withstand Voltage: 8kV
  • Ultimate Short-Circuit Breaking Capacity: 150kA at 380/400/415V AC
  • Utilisation Category: Category A
  • Installation: Fixed mounting with top or bottom line entry; suitable for vertical or horizontal installation
  • Mechanical Life: Up to 25,000 operating cycles
  • Electrical Life: Up to 10,000 operating cycles at 415V AC and rated current
  • Ingress Protection: IP40
  • Dimensions (H x L x W): 140mm x 90mm x 78.5mm
  • Weight: 1.24 kg
Key Features
  • Magnetic-only trip unit designed for motor protection applications
  • High 150kA ultimate short-circuit breaking capacity at 380/400/415V AC
  • Compact 125A frame with a 40A rated current
  • Suitable for three-phase low-voltage distribution systems
  • Supports isolation and switchboard protection applications
  • Vertical or horizontal installation orientation
  • Top or bottom line entry options
  • Optional accessory compatibility within the NM8N MCCB range
Professional Installation Requirements
  • Installation, selection and testing should be performed by a licensed electrician in accordance with AS/NZS 3000, applicable switchboard requirements and the manufacturer's instructions. Motor overload protection must be coordinated separately because this model uses a magnetic-only trip unit.
Applications
  • Motor short-circuit protection
  • Three-phase motor control panels
  • Industrial switchboards
  • Main and sub-main switchboard protection
  • Low-voltage power distribution
  • Commercial and industrial electrical installations
Standards & Compliance
  • AS/NZS IEC 60947.2:2015 for low-voltage circuit-breakers
  • AS/NZS 3000:2018 for electrical installation and wiring requirements
Environmental Benefits
  • Long mechanical and electrical service life can reduce replacement frequency and associated material waste
  • Protects motors and switchgear from severe fault currents, helping extend the service life of connected equipment
  • Components at end of life should be processed through appropriate electrical and metal recycling channels
Warranty Information

CHINT warranty policy provides 27 months from the date of manufacture for other low-voltage apparatus sold through authorised sales channels. Contractual terms may vary, and exclusions apply for improper installation, misuse, unauthorised modification or use outside the technical instructions.

Available Now

Available through authorised CHINT distributors in Australia.

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