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MCCB 4P 350A 70kA Thermal Magnetic 400A Frame NM8N Chint

BRAND: CABAC
SKU: 268969
$3,163.00 List price: $4,217.40
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Chint NM8N 350A 4P MCCB features 70kA breaking capacity, thermal-magnetic trip unit with protected neutral and a 400A frame. Ideal for switchboard mains protection.

Alternatively Known As: Moulded Case Circuit Breaker, MCCB, Thermal-Magnetic Circuit Breaker, 4P Main Circuit Breaker

Technical Specifications
  • Product Series: NM8N-400Q
  • Circuit Breaker Type: Moulded case circuit breaker
  • Number of Poles: 4P
  • Rated Current: 350A
  • Frame Size: 400A
  • Trip Unit: Adjustable thermal-magnetic
  • Ultimate Breaking Capacity: 70kA at 380/400/415V AC
  • Service Breaking Capacity: 70kA at 380/400/415V AC
  • Rated Operational Voltage: 380/415V AC
  • Maximum Operational Voltage: 690V AC
  • Rated Insulation Voltage: 1,000V AC
  • Rated Impulse Withstand Voltage: 8kV
  • Adjustable Thermal Current Range: 245–350A
  • Adjustable Magnetic Trip Range: 1,750–3,500A
  • Utilisation Category: Category A
  • Ingress Protection: IP00; IP40 with terminal covers
  • Installation: Fixed mounting with front or rear connection options
  • Dimensions (H x L x W): 255mm x 113mm x 185mm
  • Weight: 5.5 kg
Key Features
  • Four-pole protection for three-phase systems with neutral switching
  • Protected neutral configuration
  • 70kA short-circuit breaking capacity at 380–415V AC
  • Adjustable thermal and magnetic trip settings
  • 400A frame accommodates ratings from 250A to 400A
  • Suitable for switchboard mains and low-voltage distribution protection
  • Can be installed with line or load connections at the top or bottom
  • Compatible with selected auxiliary and operating accessories
Professional Installation Requirements
  • Installation, commissioning and testing must be performed by a licensed electrician in accordance with applicable Australian wiring rules, manufacturer instructions and switchboard requirements. Confirm fault levels, discrimination, cable capacity and neutral configuration before installation.
Applications
  • Switchboard mains protection
  • Commercial and industrial low-voltage distribution boards
  • Power centres and main distribution boards
  • Motor control centres and industrial plant distribution
  • Protection of feeders, cables and electrical equipment against overload and short circuit
Standards & Compliance
  • AS/NZS IEC 60947.2 for low-voltage circuit-breakers
Environmental Benefits
  • Durable moulded-case construction can support extended service life and reduce replacement waste
  • Metal terminals and internal conductive materials are recoverable through appropriate electrical equipment recycling streams
  • Adjustable protection settings can help coordinate system protection and limit unnecessary equipment damage
Warranty Information

CHINT warranty policy for other low-voltage apparatus provides 27 months from the date of manufacture against defects in materials and workmanship when supplied through authorised sales channels; contract terms may vary.

Available Now

Available through authorised CHINT distributors in Australia.

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