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MCCB 3P 400A 70kA Standard Electronic 630A Frame NM8N Chint

BRAND: CABAC
SKU: 269481
$2,845.40 List price: $3,793.90
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Chint NM8N 400A 3P MCCB features 70kA breaking capacity, standard electronic trip unit and a 630A frame. Ideal for switchboard mains and sub-mains protection.

Alternatively Known As: Moulded Case Circuit Breaker, 3-Pole MCCB, Electronic MCCB, Main Switchboard Circuit Breaker

Technical Specifications
  • Breaker Type: Moulded case circuit breaker
  • Frame Size: 630A, frame 23
  • Rated Current: 400A
  • Number of Poles: 3P
  • Breaking Capacity: 70kA at 380/415V AC
  • Trip Unit: Standard electronic EM release
  • Rated Operational Voltage: Up to 690V AC
  • Rated Insulation Voltage: 1000V AC
  • Rated Impulse Withstand Voltage: 8kV
  • Long-Time Current Setting: 0.4–1.0 x In, adjustable in 1A steps
  • Short-Time Current Setting: 1.5–10 x Ir, adjustable with selectable delay
  • Instantaneous Current Setting: 1.5–12 x In, adjustable
  • Earth-Fault Current Setting: 0.4–1.0 x In, selectable
  • Electrical Endurance: Up to 8,000 cycles at 415V AC
  • Mechanical Endurance: Up to 20,000 cycles
  • Connection: Front connection configuration
  • Dimensions (H x L x W): 255mm x 140mm x 113mm
  • Weight: 7.8 kg
Key Features
  • 70kA short-circuit breaking capacity at 380/415V AC
  • 630A frame with a 400A rated current
  • Standard electronic trip unit with overload, short-time, instantaneous and earth-fault protection
  • Adjustable protection parameters for coordination and selectivity
  • Real-time current display and protection status information
  • Suitable for main switchboards and high-current sub-main circuits
  • Designed for vertical or horizontal installation with top or bottom line entry
Professional Installation Requirements
  • Installation, testing and commissioning must be performed by a licensed electrician in accordance with the manufacturer's instructions, AS/NZS 3000 and applicable switchboard requirements. Protection settings must be selected by a suitably qualified person based on the system fault level and discrimination study.
Applications
  • Main switchboard incoming protection
  • Commercial and industrial sub-main protection
  • Low-voltage power distribution systems
  • Switchboard feeder protection
  • High-current motor and plant distribution circuits where the selected protection settings are suitable
Standards & Compliance
  • AS/NZS 60947.2 for low-voltage circuit breakers and moulded case circuit breakers
Environmental Benefits
  • Adjustable electronic protection can improve system efficiency by reducing unnecessary tripping and equipment damage
  • Durable construction and long mechanical and electrical service life can reduce replacement frequency and electrical equipment waste
Warranty Information

CHINT general 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; contract terms may vary.

Available Now

Available through authorised CHINT distributors in Australia.

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