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MCCB 3P 250A 70kA Standard Electronic 630A Frame NM8N Chint

BRAND: CABAC
SKU: 269480
$2,845.40 List price: $3,793.90
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Chint NM8N 250A 3P MCCB features 70kA breaking capacity, standard electronic trip unit and a 630A frame. Ideal for switchboard mains and sub-mains protection.

Alternatively Known As: Moulded Case Circuit Breaker, 3-Phase MCCB, Electronic MCCB, Switchboard Main Circuit Breaker

Technical Specifications
  • Series: NM8N
  • Frame Size: 630A frame
  • Rated Current: 250A
  • Number of Poles: 3P
  • Breaking Capacity: 70kA
  • Trip Unit: Standard electronic EM release
  • Rated Operational Voltage: Up to 690V AC
  • Rated Insulation Voltage: 1,000V AC
  • Rated Impulse Withstand Voltage: 8kV
  • Overload Current Adjustment: 100–250A
  • Instantaneous Short-Circuit Adjustment: 375–3,000A
  • Utilisation Category: Category B
  • Ingress Protection: IP00; up to IP40 with terminal covers
  • Electrical Endurance: Up to 4,000 cycles
  • Mechanical Endurance: Up to 15,000 cycles
  • Operating Temperature: -35°C to +70°C
  • Dimensions (H x L x W): 255mm x 140mm x 213mm
  • Weight: 5.96 kg
Key Features
  • 70kA short-circuit breaking capacity
  • Standard electronic trip unit for adjustable overload and short-circuit protection
  • 250A rated current in a 630A frame size
  • Three-pole configuration for three-phase distribution systems
  • Suitable for switchboard mains and sub-mains protection
  • Electronic trip settings support accurate circuit protection and coordination
  • Compatible with NM8N series accessories and connection arrangements
Professional Installation Requirements
  • Installation, configuration and testing must be performed by a licensed electrician or suitably qualified electrical professional. Install within a suitably rated switchboard in accordance with AS/NZS 3000, the switchboard assembly requirements and the manufacturer's instructions.
Applications
  • Main incoming protection in commercial and industrial switchboards
  • Sub-main circuit protection
  • Three-phase power distribution systems
  • Power centres and motor control centres
  • Industrial and commercial electrical distribution equipment
Standards & Compliance
  • Applicable product standard: AS/NZS IEC 60947.2:2015 for low-voltage circuit-breakers; confirm local certification and installation suitability for the specific unit before use in Australia.
Environmental Benefits
  • Long service life can reduce replacement frequency and associated material waste
  • Metallic components can be recovered for recycling at end of service life
  • Adjustable electronic protection can help minimise overheating and avoid unnecessary equipment damage
  • RoHS declarations are available for the NM8N product family
Warranty Information

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

Available Now

Available through authorised CHINT distributors in Australia.

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