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

BRAND: CABAC
SKU: 269502
$2,779.20 List price: $3,705.60
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30 Days Return Electricians Unlock Trade Access
Chint NM8N 250A 3P MCCB features 50kA breaking capacity, magnetic-only trip unit for motor protection and a 400A frame. Ideal for switchboard mains protection.

Alternatively Known As: Moulded Case Circuit Breaker, Magnetic-Only MCCB, Motor Protection MCCB, NM8N-400S M 250 3P

Technical Specifications
  • Series: NM8N-400S
  • Configuration: 3-pole MCCB
  • Rated Current: 250A
  • Frame Size: 400A
  • Breaking Capacity: 50kA at 380/415V AC
  • Trip Unit: Magnetic-only release
  • Magnetic Trip Adjustment: 9–14 x In for motor protection
  • Rated Operational Voltage: Up to 690V AC
  • Rated Insulation Voltage: 1000V
  • Rated Impulse Withstand Voltage: 12kV
  • Operating Frequency: 50/60Hz
  • Standards Basis: IEC 60947-1 and IEC 60947-2
  • Dimensions (H x L x W): 255mm x 140mm x 113mm
  • Weight: 5.7 kg
Key Features
  • 400A frame with a 250A adjustable magnetic-only release
  • 50kA short-circuit breaking capacity at 380/415V AC
  • Magnetic-only protection suitable for motor circuit short-circuit protection
  • Adjustable instantaneous magnetic trip range for motor applications
  • Three-pole construction for three-phase distribution systems
  • Suitable for switchboards, motor feeders and industrial power distribution
  • Accessory options available within the NM8N MCCB series
  • RoHS declaration available for the NM8N product family
Professional Installation Requirements
  • Installation, selection and commissioning should be performed by a licensed electrician in accordance with AS/NZS 3000, the manufacturer's instructions and the requirements of the switchboard assembly. A separate overload relay or equivalent motor overload protection is required where the magnetic-only trip does not provide overload protection.
Applications
  • Motor feeder short-circuit protection
  • Industrial switchboards
  • Main and sub-main distribution protection
  • Three-phase power distribution
  • Motor control centres and commercial electrical equipment
Standards & Compliance
  • AS/NZS IEC 60947.2:2015 – low-voltage switchgear and controlgear circuit-breakers
  • AS/NZS 3000:2018 – electrical installation requirements where applicable
Environmental Benefits
  • RoHS documentation is available for the NM8N product family, supporting restriction of hazardous substances
  • Durable moulded-case construction can support long service life and reduce replacement waste
  • Copper and metal components can be recovered through appropriate electrical equipment recycling streams
Warranty Information

CHINT's general warranty policy covers other low-voltage apparatus for 27 months from the date of manufacture when purchased through authorised sales channels, subject to the applicable terms and contract conditions.

Available Now

Available through authorised CHINT distributors in Australia.

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