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MCCB 3P 180A 70kA Thermal Magnetic 250A Frame NM8N Chint

BRAND: CABAC
SKU: 271197
$926.40 List price: $1,235.20
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Chint NM8N 180A 3P MCCB features 70kA breaking capacity, thermal-magnetic trip unit and a 250A frame. Ideal for switchboard mains and sub-mains protection.

Alternatively Known As: Moulded Case Circuit Breaker, 3-Phase MCCB, Thermal-Magnetic Circuit Breaker, NM8N-250Q-180/3/22

Technical Specifications
  • Product Series: NM8N-250Q
  • Poles: 3P
  • Rated Current: 180 A
  • Frame Size: 250 A
  • Trip Unit: Thermal-magnetic
  • Ultimate Breaking Capacity Icu: 70 kA at AC 380/400/415 V
  • Service Breaking Capacity Ics: 70 kA at AC 380/400/415 V
  • Rated Operational Voltage: 380/415 V AC
  • Maximum Operational Voltage: 690 V AC
  • Rated Insulation Voltage Ui: 1000 V AC
  • Rated Impulse Withstand Voltage Uimp: 8 kV
  • Utilisation Category: Category B
  • Installation: Fixed mounting with top or bottom line entry
  • Dimensions (H x L x W): 157mm x 105mm x 88.7mm
  • Weight: 1.75 kg
Key Features
  • 70 kA short-circuit breaking capacity at 380/400/415 V AC
  • Thermal-magnetic protection against overload and short circuit
  • Three-pole configuration for three-phase distribution systems
  • 250 A frame with 180 A rated current
  • Suitable for switchboard mains and sub-mains protection
  • Optional accessories include auxiliary contacts, shunt trip, undervoltage release and motor operator
  • Can be installed vertically or horizontally
  • Supports isolation and circuit protection functions
Professional Installation Requirements
  • Installation, testing and commissioning must be performed by a licensed electrician in accordance with the manufacturer's instructions, AS/NZS 3000 and the requirements for the switchboard assembly. Confirm fault levels, discrimination, cable capacity and enclosure clearances before installation.
Applications
  • Switchboard mains protection
  • Sub-main protection in commercial and industrial installations
  • Three-phase power distribution boards
  • Industrial control panels and power centres
  • Motor control centres where the selected thermal-magnetic characteristics are suitable
Standards & Compliance
  • AS/NZS 60947.2: Low-voltage switchgear and controlgear – Circuit-breakers, the applicable product standard for MCCBs
  • Installation and switchboard integration should comply with AS/NZS 3000 and the applicable AS/NZS 61439 requirements
Environmental Benefits
  • Metal and thermoplastic construction allows recovery and recycling of materials at end of service life
  • RoHS documentation is available for the NM8N product family
  • Long mechanical and electrical service life can reduce replacement frequency and material waste
  • Low-voltage circuit protection supports safer and more reliable operation of electrical distribution systems
Warranty Information

CHINT warranty policy provides 27 months from the date of manufacture for other low-voltage apparatus, including MCCBs, when purchased through authorised sales channels. Contract terms and exclusions apply, including improper installation, misuse and unauthorised modification.

Available Now

Available through authorised CHINT distributors in Australia.

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