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MCCB 3P 400A 70kA Thermal Magnetic 400A Frame NM8N Chint

BRAND: CABAC
SKU: 268962
$2,845.40 List price: $3,793.90
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Chint NM8N 400A 3P MCCB features 70kA breaking capacity, thermal-magnetic trip unit and a 400A frame. Ideal for switchboard mains and sub-mains protection.

Alternatively Known As: CHINT NM8N-400Q TM MCCB, 400A moulded case circuit breaker, 3P circuit breaker, thermal-magnetic circuit breaker

Technical Specifications
  • Rated Current: 400A
  • Number of Poles: 3P
  • Trip Unit: Thermal-magnetic, adjustable
  • Ultimate Breaking Capacity Icu: 70kA at 380/400/415V AC
  • Service Breaking Capacity Ics: 100% of Icu at applicable voltage
  • Rated Operational Voltage: Up to 690V AC, 50/60Hz
  • Rated Insulation Voltage Ui: 1000V
  • Rated Impulse Withstand Voltage Uimp: 8kV
  • Utilisation Category: Category A
  • Mounting: Fixed, plug-in or DIN-rail mounting options subject to configuration
  • Terminal Connection: Front or rear connection options subject to configuration
  • Mechanical Life: Up to 25,000 operating cycles
  • Electrical Life: Up to 10,000 operating cycles at 415V AC
  • Operating Temperature: -40°C to +70°C, subject to trip-unit and installation conditions
  • Protection Rating: IP40 for the breaker body when suitably installed
  • Dimensions (H x L x W): 255mm x 213mm x 140mm
  • Weight: 5.735 kg
Key Features
  • 70kA short-circuit breaking capacity for high-fault-level distribution systems
  • 400A frame with a 400A thermal-magnetic trip rating
  • Three-pole protection for three-phase switchboards
  • Thermal overload and magnetic short-circuit protection
  • Suitable for switchboard mains, sub-mains and commercial or industrial distribution circuits
  • Supports isolation and flexible fixed or plug-in installation configurations
  • Compact thermoset moulded-case construction
  • Accessory options available across the NM8N range, including auxiliary contacts, alarm contacts and shunt or undervoltage releases
Professional Installation Requirements
  • Installation, selection and commissioning must be performed by a licensed electrician. Verify prospective fault current, discrimination, cable capacity, busbar ratings, enclosure clearances and protection settings before energisation. Install in accordance with applicable Australian wiring and switchboard requirements.
Applications
  • Main incomer protection in commercial and industrial switchboards
  • Sub-main protection in low-voltage distribution boards
  • Three-phase feeder protection
  • Power distribution systems requiring high short-circuit withstand capability
  • Industrial plant, infrastructure and commercial building electrical distribution
Standards & Compliance
  • AS/NZS 60947.2: Low-voltage switchgear and controlgear – Circuit-breakers is the applicable Australian/New Zealand product standard for MCCBs
  • The supplied unit should be verified for applicable Australian certification and RCM requirements before installation
Environmental Benefits
  • Long mechanical and electrical service life can reduce replacement frequency and associated waste
  • Metallic conductor and structural components can be separated and recycled at end of service life
  • Thermal-magnetic protection helps prevent damage to downstream equipment and extend system service life
  • Does not require a continuous electronic control supply for basic thermal-magnetic protection
Warranty Information

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

Available Now

Available through authorised CHINT distributors in Australia.

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