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MCCB 3P 400A 50kA Basic Electronic 400A Frame NM8N Chint

BRAND: CABAC
SKU: 269403
$2,582.50 List price: $3,443.40
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Chint NM8N 400A 3P MCCB features 50kA breaking capacity, basic electronic trip unit and a 400A frame. Ideal for switchboard mains and sub-mains protection.

Alternatively Known As: NM8N-400S-EN-400-3P, 400A Electronic MCCB, 3-Phase Moulded Case Circuit Breaker

Technical Specifications
  • Frame Size: 400A
  • Rated Current: 400A
  • Number of Poles: 3P
  • Breaking Capacity: 50kA at 380/400/415V AC
  • Trip Unit: EN basic electronic, power distribution protection
  • Rated Operational Voltage: Up to 690V AC, 50/60Hz
  • Rated Insulation Voltage: 1,000V
  • Rated Impulse Withstand Voltage: 12kV
  • Overload Protection Setting: 0.4–1.0 × In
  • Short-Time Protection Setting: 1.5–10 × Ir, adjustable
  • Instantaneous Protection Setting: 2–12 × In, adjustable
  • Utilisation Category: B for electronic trip units
  • Installation: Fixed mounting with front or rear connection
  • Ingress Protection: IP40
  • Operating Temperature: -35°C to +70°C for basic electronic type
  • Dimensions (H x L x W): 255mm x 113mm x 140mm
  • Weight: 6.7 kg
Key Features
  • 50kA short-circuit breaking capacity for high-fault-level installations
  • Three-stage electronic protection for overload, short-time short circuit and instantaneous short circuit conditions
  • Adjustable long-time, short-time and instantaneous trip settings
  • Suitable for switchboard mains, sub-mains and commercial or industrial power distribution
  • Supports AC systems up to 690V
  • Can be installed vertically or horizontally with top or bottom line entry
  • Optional shunt release, motor mechanism, mechanical interlock, terminal shrouds and spreaders available
Professional Installation Requirements
  • Installation, selection, adjustment and commissioning should be carried out by a licensed electrician in accordance with AS/NZS 3000, the switchboard manufacturer's requirements and applicable protection-coordination procedures. Confirm local certification and RCM requirements before installation.
Applications
  • Main switchboard protection
  • Sub-main circuit protection
  • Commercial and industrial power distribution
  • Industrial plant and machinery protection
  • High-fault-level distribution boards
  • Building services and data-centre electrical distribution
Standards & Compliance
  • Applicable Australian standard: AS/NZS 60947.2 for low-voltage circuit-breakers
  • Installation should comply with AS/NZS 3000 Wiring Rules
  • Product documentation specifies compliance with IEC/EN 60947-1 and IEC/EN 60947-2; verify Australian certification and RCM status for the intended installation
Environmental Benefits
  • Electronic trip protection can improve fault discrimination and reduce unnecessary interruption of downstream equipment
  • Long mechanical and electrical service life can reduce replacement frequency and associated material waste
  • Metallic components and copper terminals can be recovered through established electrical-equipment recycling streams
  • Adjustable protection settings support accurate system protection and help reduce equipment damage during fault events
Warranty Information

CHINT warranty policy covers other low-voltage apparatus against defects in materials and workmanship for 27 months from the date of manufacture when purchased through authorised sales channels, subject to the policy terms.

Available Now

Available through authorised CHINT distributors in Australia.

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