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MCCB 3P 350A 70kA Thermal Magnetic 400A Frame NM8N Chint

BRAND: CABAC
SKU: 268961
$2,845.40 List price: $3,793.90
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Chint NM8N 350A 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: NM8N-400Q TM MCCB, 350A Moulded Case Circuit Breaker, 3-Phase Thermal-Magnetic Circuit Breaker

Technical Specifications
  • Rated Current: 350 A
  • Frame Size: 400 A
  • Number of Poles: 3P
  • Trip Unit: Thermal-magnetic, adjustable 0.7–1.0 x In
  • Ultimate Breaking Capacity Icu: 70 kA at 380/400/415 V AC
  • Service Breaking Capacity Ics: 70 kA at 380/400/415 V AC
  • Maximum Rated Operational Voltage Ue: 690 V AC
  • Rated Insulation Voltage Ui: 1000 V AC
  • Rated Impulse Withstand Voltage Uimp: 8 kV
  • Rated Frequency: 50/60 Hz
  • Utilisation Category: A
  • Power Dissipation: 91.8 W
  • Ingress Protection: IP00, or IP40 with terminal covers
  • Operating Temperature: -40°C to +70°C
  • Reference Standard: EN 60947-2
  • Dimensions (H x L x W): 255mm x 113mm x 140mm
  • Weight: 5.24 kg
Key Features
  • 70 kA short-circuit breaking capacity at 380–415 V AC
  • Thermal-magnetic overload and short-circuit protection
  • Three-pole configuration for three-phase distribution systems
  • 400 A frame with 350 A rated current
  • Adjustable thermal trip setting from 0.7 to 1.0 times rated current
  • Suitable for main and sub-main switchboard protection
  • Compatible with a range of optional MCCB accessories
  • Designed for industrial power distribution applications
Professional Installation Requirements
  • Installation, selection, adjustment and testing must be performed by a licensed electrical worker in accordance with the manufacturer's instructions, AS/NZS 3000 and applicable switchboard requirements. Verify fault levels, discrimination, cable capacity and enclosure clearances before commissioning.
Applications
  • Switchboard mains protection
  • Sub-main and feeder protection
  • Industrial power distribution boards
  • Commercial building electrical distribution
  • Power centres and motor control centres
  • Three-phase low-voltage distribution systems
Standards & Compliance
  • AS/NZS IEC 60947.2:2015 for low-voltage circuit-breakers
  • AS/NZS 3000:2018 for installation within Australian and New Zealand electrical installations
Environmental Benefits
  • Durable moulded-case construction can extend service life and reduce replacement waste
  • Metal and thermoplastic components may be recoverable through appropriate electrical-equipment recycling streams
  • Provides overload and short-circuit protection that can help prevent damage to downstream electrical equipment
Warranty Information

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

Available Now

Available through authorised CHINT distributors in Australia.

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