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MCCB 3P 250A 100kA Magnetic Only 250A Frame NM8N Chint

BRAND: CABAC
SKU: 271444
$2,911.60 List price: $3,882.10
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30 Days Return Electricians Unlock Trade Access
Chint NM8N 250A 3P MCCB features 100kA breaking capacity, magnetic-only trip unit for motor protection and a 250A frame. Ideal for switchboard mains protection.

Alternatively Known As: CHINT NM8N-250H M 250 3P MCCB, Motor Protection MCCB, Magnetic Circuit Breaker, Moulded-Case Circuit Breaker

Technical Specifications
  • Product Type: Moulded-case circuit breaker
  • Frame Size: 250 A
  • Rated Current: 250 A
  • Number of Poles: 3P
  • Release Type: Magnetic-only motor protection
  • Rated Operational Voltage: 380/400/415 V AC at 50/60 Hz
  • Ultimate Breaking Capacity: 100 kA at 380–440 V AC
  • Service Breaking Capacity: 100 kA at 380–440 V AC
  • Instantaneous Magnetic Setting: 9–14 x In
  • Insulation Voltage Ui: 1,000 V
  • Impulse Withstand Voltage Uimp: 8 kV
  • Mechanical Durability: 15,000 operations
  • Electrical Durability: 1,500 operations
  • Connection: Fixed or plug-in mounting options
  • Terminal Tightening Torque: 11 Nm for M8 terminals
  • Dimensions (H x L x W): 157mm x 88.7mm x 105mm
  • Weight: 1.85 kg
Key Features
  • 100 kA short-circuit breaking capacity at 380–440 V AC
  • Magnetic-only release designed for motor and transformer protection schemes
  • Adjustable instantaneous trip setting from 9 to 14 times rated current
  • Three-pole construction for three-phase systems
  • 250 A frame with 250 A rated current
  • Suitable for switchboard mains and industrial power distribution applications
  • External thermal overload protection or motor overload relay is required where overload protection is needed
  • Supports vertical or horizontal installation with top or bottom line entry
Professional Installation Requirements
  • Installation, selection and commissioning must be performed by a licensed electrician in accordance with AS/NZS 3000, the manufacturer's instructions and the switchboard assembly requirements. Magnetic-only protection must be coordinated with a suitable overload relay for motor applications.
Applications
  • Three-phase motor short-circuit protection
  • Motor control centres and industrial switchboards
  • Switchboard mains and sub-main protection
  • Transformer primary short-circuit protection
  • Commercial and industrial low-voltage power distribution
Standards & Compliance
  • AS/NZS IEC 60947.2:2015 applies to low-voltage circuit-breakers of this type
  • Installation should comply with AS/NZS 3000:2018; verify Australian certification and RCM requirements for the specific supply chain and installation
Environmental Benefits
  • RoHS documentation is available for the NM8N series, supporting restriction of hazardous substances
  • Long mechanical and electrical service life can reduce replacement frequency and equipment waste
  • Reusable metal conducting materials and thermoplastic components can be separated for recycling at end of service life
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 conditions.

Available Now

Available through authorised CHINT distributors in Australia.

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