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MCCB 3P 250A 50kA Thermal Magnetic 400A Frame NM8N Chint

BRAND: CABAC
SKU: 268947
$1,786.60 List price: $2,382.20
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Chint NM8N 250A 3P MCCB features 50kA breaking capacity, thermal-magnetic trip unit and a 400A frame. Ideal for switchboard mains and sub-mains protection.

Alternatively Known As: CHINT moulded case circuit breaker, 250A 3-pole MCCB, thermal-magnetic circuit breaker, switchboard circuit breaker

Technical Specifications
  • Rated Current: 250 A
  • Frame Size: 400 A
  • Number of Poles: 3P
  • Release Type: Thermal-magnetic, TM
  • Breaking Capacity: 50 kA at 380/400/415 V AC
  • Rated Service Breaking Capacity: 50 kA at 380/400/415 V AC
  • Rated Operational Voltage: 380/400/415 V AC, 50/60 Hz
  • Rated Insulation Voltage: 1,000 V
  • Rated Impulse Withstand Voltage: 8 kV
  • Utilisation Category: A
  • Installation: Fixed mounting with front or rear connection
  • Applicable Frequency: 50/60 Hz
  • Dimensions (H x L x W): 255mm x 113mm x 140mm
  • Weight: 4.5 kg
Key Features
  • 50 kA short-circuit breaking capacity at standard low-voltage distribution voltages
  • Thermal-magnetic trip unit for overload and short-circuit protection
  • 400 A frame with a 250 A rated current
  • Three-pole configuration for three-phase distribution systems
  • Suitable for switchboard mains, sub-mains and industrial distribution circuits
  • Maintenance-free mechanism with high mechanical and electrical endurance
  • Top or bottom line entry capability
  • Vertical or horizontal installation orientation
Professional Installation Requirements
  • Installation, testing and commissioning must be performed by a licensed electrician in accordance with AS/NZS 3000, the manufacturer's instructions and the requirements of the completed switchboard assembly. Confirm fault levels, cable capacity, discrimination and enclosure clearances before energising.
Applications
  • Switchboard mains protection
  • Sub-main circuit protection
  • Commercial and industrial low-voltage distribution
  • Motor and equipment feeder protection where the thermal-magnetic characteristics are suitable
  • Electrical distribution panels and industrial control assemblies
Standards & Compliance
  • AS/NZS IEC 60947.2:2015 for low-voltage circuit-breakers
  • IEC/EN 60947-2
  • AS/NZS 3000 may apply to installation and wiring arrangements
Environmental Benefits
  • Thermal-magnetic protection can help prevent damage to downstream electrical equipment, reducing premature replacement and waste
  • Durable moulded-case construction supports extended service life
  • Metallic and thermoplastic components can be separated for appropriate end-of-life recycling where local facilities accept them
Warranty Information

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

Available Now

Available through authorised CHINT distributors in Australia.

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