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MCCB 4P 350A 50kA Thermal Magnetic 400A Frame NM8N Chint

BRAND: CABAC
SKU: 268957
$2,911.60 List price: $3,882.10
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Chint NM8N 350A 4P MCCB features 50kA breaking capacity, thermal-magnetic trip unit with protected neutral and a 400A frame. Ideal for switchboard mains protection.

Alternatively Known As: 350A 4P Moulded Case Circuit Breaker, NM8N 400A Frame MCCB, Thermal Magnetic MCCB, Main Switchboard Circuit Breaker

Technical Specifications
  • Product Type: Moulded case circuit breaker
  • Frame Size: 400A frame, Frame 23
  • Rated Current: 350A at 40°C
  • Number of Poles: 4P
  • Trip Unit: Thermal-magnetic, electromechanical
  • Neutral Protection: Protected neutral pole
  • Breaking Capacity Icu: 50kA at AC 380/400/415V
  • Service Breaking Capacity Ics: 50kA at AC 380/400/415V
  • Rated Operational Voltage Ue: Up to 690V AC
  • Rated Insulation Voltage Ui: 1000V AC
  • Rated Impulse Withstand Voltage Uimp: 8kV
  • Frequency: 50/60Hz
  • Adjustable Current Range: 0.7–1.0 x In
  • Utilisation Category: Category A
  • Ingress Protection: IP00, or IP40 with terminal covers
  • Power Dissipation: 122.4W
  • Electrical Durability: 1,500 operations
  • Mechanical Durability: 15,000 operations
  • Dimensions (H x L x W): 255mm x 185mm x 113mm
  • Weight: 5.5 kg
Key Features
  • 50kA short-circuit breaking capacity at 380/400/415V AC
  • Four-pole configuration with protected neutral
  • Thermal-magnetic overload and short-circuit protection
  • 400A frame with 350A rated current
  • Adjustable thermal trip range from 70% to 100% of rated current
  • Suitable for switchboard mains and industrial power distribution
  • Accessory-ready design for compatible auxiliary and shunt-release accessories
Professional Installation Requirements
  • Installation, testing and commissioning must be carried out by a licensed electrician in accordance with the manufacturer's instructions, applicable switchboard requirements and AS/NZS 3000. Confirm fault levels, discrimination, conductor sizing, termination torque and Australian certification requirements before energising.
Applications
  • Main switchboard incoming protection
  • Industrial power distribution boards
  • Commercial building switchboards
  • Power centres and motor control centres
  • Overload and short-circuit protection for three-phase electrical installations
Standards & Compliance
  • Product documentation references IEC/EN 60947-2 for low-voltage circuit-breakers
  • Applicable Australian/New Zealand product standard: AS/NZS IEC 60947.2:2015
  • Installation and verification should comply with AS/NZS 3000, including local certification and RCM requirements where applicable
Environmental Benefits
  • Durable moulded-case construction supports extended service life and reduces replacement waste
  • Metal components can be recovered through appropriate electrical equipment recycling at end of life
  • Resettable circuit protection helps limit damage and replacement of downstream electrical equipment
Warranty Information

CHINT's general warranty policy lists 27 months from the date of manufacture for other low-voltage apparatus sold through authorised channels; contract terms or local distributor conditions may vary.

Available Now

Available through authorised CHINT distributors in Australia.

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