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MCCB 4P 180A 50kA Thermal Magnetic 250A Frame NM8N Chint

BRAND: CABAC
SKU: 271185
$1,257.30 List price: $1,676.40
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Chint NM8N 180A 4P MCCB features 50kA breaking capacity, thermal-magnetic trip unit with protected neutral and a 250A frame. Ideal for switchboard mains protection.

Alternatively Known As: CHINT NM8N-250S 4P MCCB, 180A moulded case circuit breaker, 50kA thermal-magnetic circuit breaker

Technical Specifications
  • Breaker Type: Moulded case circuit breaker
  • Poles: 4P with protected neutral
  • Rated Current: 180A
  • Frame Size: 250A
  • Trip Unit: Adjustable thermal-magnetic
  • Breaking Capacity: 50kA at 380/400/415V AC
  • Rated Insulation Voltage Ui: 1000V AC
  • Rated Impulse Withstand Voltage Uimp: 8kV
  • Rated Operational Voltage: 380/400/415V AC, 50/60Hz
  • Utilisation Category: Category A
  • Trip Adjustment: Thermal 0.7–1.0 x In; magnetic 5–10 x In for 180–250A power-distribution models
  • Installation Orientation: Vertical or horizontal, with top or bottom line entry
  • Mechanical Life: Up to 25,000 operating cycles
  • Electrical Life: Up to 10,000 operating cycles at 415V and rated current
  • Standard Design Basis: IEC/EN 60947-2
  • Dimensions (H x L x W): 157mm x 88.7mm x 140mm
  • Weight: 2.5 kg
Key Features
  • Four-pole protection with protected neutral
  • 50kA ultimate short-circuit breaking capacity at 380/400/415V AC
  • Adjustable thermal-magnetic overload and short-circuit protection
  • 250A frame with an 180A rated current
  • Suitable for switchboard incomer, feeder and mains protection
  • Can be installed vertically or horizontally
  • Top or bottom line entry configuration
  • Suitable for isolation when installed in accordance with applicable requirements
  • Optional accessories and auxiliary devices are available for the NM8N series
Professional Installation Requirements
  • Installation, protection coordination and commissioning must be carried out by a licensed electrician in a de-energised switchboard, with conductor sizing, fault-level verification, neutral configuration and enclosure requirements assessed in accordance with AS/NZS 3000 and the applicable switchboard assembly requirements.
Applications
  • Main switchboard incomer protection
  • Commercial and industrial distribution boards
  • Feeder protection in low-voltage switchboards
  • Overload and short-circuit protection for three-phase systems with neutral
  • Electrical distribution systems requiring high short-circuit withstand capability
Standards & Compliance
  • Designed to IEC/EN 60947-2, with AS/NZS IEC 60947.2:2015 being the applicable Australian/New Zealand circuit-breaker standard
  • Installation should comply with AS/NZS 3000 Wiring Rules
  • Switchboard integration should be assessed against the applicable AS/NZS 61439 assembly requirements
Environmental Benefits
  • RoHS documentation is available for the NM8N series to support control of restricted substances
  • Long mechanical and electrical service life can reduce replacement frequency and equipment waste
  • Metal and thermoplastic components may be separated for appropriate recycling at end of service life
Warranty Information

CHINT's general warranty policy for other low-voltage apparatus provides 27 months from the date of manufacture against defects in materials and workmanship when purchased through authorised sales channels; contractual or Australian distributor terms may vary.

Available Now

Available through authorised CHINT distributors in Australia.

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