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MCCB 3P 180A 50kA Thermal Magnetic 250A Frame NM8N Chint

BRAND: CABAC
SKU: 271173
$727.90 List price: $970.50
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Chint NM8N 180A 3P MCCB features 50kA breaking capacity, thermal-magnetic trip unit and a 250A frame. Ideal for switchboard mains and sub-mains protection.

Alternatively Known As: CHINT NM8N-250S TM 180A 3P MCCB, moulded-case circuit breaker, adjustable thermal-magnetic circuit breaker

Technical Specifications
  • Rated Current: 180 A at 40°C
  • Number of Poles: 3P
  • Frame Size: 250 A
  • Release Type: Adjustable thermal-magnetic trip unit
  • Breaking Capacity: 50 kA at 380/400/415 V AC
  • Rated Operational Voltage: Up to 690 V AC, 50/60 Hz
  • Rated Insulation Voltage: 1,000 V
  • Rated Impulse Withstand Voltage: 8 kV
  • Thermal Overload Adjustment: 0.7–1.0 x In
  • Magnetic Short-Circuit Adjustment: 5–10 x In for distribution protection
  • Utilisation Category: A
  • Mechanical Durability: 15,000 operating cycles
  • Electrical Durability: 1,500 operating cycles
  • Connection Type: Fixed front or rear connection options
  • Standard Product Reference: IEC 60947-2
  • Dimensions (H x L x W): 232mm x 88mm x 105mm
  • Weight: 1.85 kg
Key Features
  • 50 kA short-circuit breaking capacity for high-fault-level distribution systems
  • Adjustable thermal protection from 0.7 to 1.0 times the rated current
  • Adjustable instantaneous magnetic protection for short-circuit events
  • Three-pole configuration for three-phase circuit protection
  • 250 A frame accommodates rated current settings from 125 to 250 A
  • Suitable for manual isolation and low-voltage power distribution
  • Compact moulded-case construction for switchboard installation
Professional Installation Requirements
  • Installation, configuration and connection should be performed by a licensed electrician in accordance with AS/NZS 3000, the manufacturer's instructions and applicable electrical safety requirements. Correct fault-current coordination, cable sizing and tightening torque must be verified before energisation.
Applications
  • Switchboard mains protection
  • Sub-main and feeder protection
  • Commercial and industrial low-voltage distribution
  • Three-phase plant and equipment protection
  • Power distribution circuits requiring adjustable overload and short-circuit protection
Standards & Compliance
  • AS/NZS IEC 60947.2:2015 is the applicable Australian/New Zealand standard for low-voltage circuit-breakers; verify current certification and RCM requirements for the specific supply model before installation
  • AS/NZS 3000 applies to selection, wiring and installation within Australian electrical installations
Environmental Benefits
  • Durable moulded-case construction can reduce replacement frequency and associated material waste
  • Metallic conductors and components may be recoverable through appropriate electrical equipment recycling streams
  • Adjustable protection settings support accurate circuit protection and can help prevent equipment damage and premature replacement
Warranty Information

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

Available Now

Available through authorised CHINT distributors in Australia.

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