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MCCB 3P 40A 100kA Thermal Magnetic 125A Frame NM8N Chint

BRAND: CABAC
SKU: 271665
$1,118.30 List price: $1,491.10
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Chint NM8N 40A 3P MCCB features 100kA breaking capacity, thermal-magnetic trip unit and a 125A frame. Ideal for switchboard mains and sub-mains protection.

Alternatively Known As: Moulded Case Circuit Breaker, MCCB, Thermal-Magnetic Circuit Breaker, 3P 40A Circuit Breaker

Technical Specifications
  • Rated Current: 40 A
  • Number of Poles: 3P
  • Frame Size: 125 A
  • Trip Unit: Thermal-magnetic, TM
  • Ultimate Short-Circuit Breaking Capacity: 100 kA at 380/400/415 V AC
  • Rated Operational Voltage: Up to 690 V AC, 50/60 Hz
  • Rated Insulation Voltage: 1000 V AC
  • Rated Impulse Withstand Voltage: 8 kV
  • Utilisation Category: A
  • Adjustable Thermal Trip Range: 0.7–1.0 x In
  • Mechanical Life: Up to 25,000 operating cycles
  • Electrical Life: Up to 10,000 operating cycles at 415 V AC
  • Mounting: Fixed front or rear connection options
  • Dimensions (H x L x W): 140mm x 78.5mm x 90mm
  • Weight: 1.19 kg
Key Features
  • 100 kA high short-circuit breaking capacity at 380–415 V AC
  • Thermal-magnetic protection for overload and short-circuit conditions
  • Compact 125 A frame suitable for switchboard integration
  • Three-pole configuration for three-phase distribution systems
  • Adjustable thermal trip setting from 0.7 to 1.0 times rated current
  • Suitable for isolation and low-voltage power distribution applications
  • Maintenance-free mechanism with long mechanical operating life
Professional Installation Requirements
  • Installation, selection and commissioning should be performed by a licensed electrician in accordance with applicable Australian electrical regulations, AS/NZS 3000 and the manufacturer's installation instructions. Confirm fault levels, conductor ratings, discrimination and local certification requirements before installation.
Applications
  • Switchboard mains protection
  • Sub-mains protection
  • Commercial and industrial low-voltage distribution boards
  • Three-phase feeders and outgoing circuits
  • Power distribution in industrial buildings and infrastructure
  • Protection of electrical equipment against overload and short circuit
Standards & Compliance
  • Applicable Australian/New Zealand product standard: AS/NZS 60947.2 for low-voltage circuit-breakers
  • CHINT specifies IEC/EN 60947-2 for the NM8N series; verify Australian certification and RCM requirements for the specific supplied variant
Environmental Benefits
  • Long mechanical and electrical service life can reduce replacement frequency and equipment waste
  • Metal components may be recovered through appropriate electrical equipment recycling streams
  • Thermal-magnetic protection helps limit damage to downstream equipment during overload and short-circuit events
Warranty Information

CHINT's general warranty policy provides 27 months from the date of manufacture for other low-voltage apparatus sold through authorised channels. Contractual terms and local distributor conditions may vary.

Available Now

Available through authorised CHINT distributors in Australia.

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