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MCCB 4P 250A 70kA Thermal Magnetic 250A Frame NM8N Chint

BRAND: CABAC
SKU: 271212
$1,522.00 List price: $2,029.30
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Chint NM8N 250A 4P MCCB features 70kA breaking capacity, thermal-magnetic trip unit with protected neutral and a 250A frame. Ideal for switchboard mains protection.

Alternatively Known As: CHINT NM8N 250A MCCB, 4-Pole Moulded Case Circuit Breaker, 250A Thermal-Magnetic Circuit Breaker

Technical Specifications
  • Product Type: Moulded case circuit breaker (MCCB)
  • Series: NM8N-250Q
  • Number of Poles: 4P
  • Rated Current: 250A
  • Trip Unit: Thermal-magnetic (TM)
  • Breaking Capacity: 70kA at 380/400/415V AC
  • Rated Operational Voltage: Up to 690V AC, 50/60Hz
  • Rated Insulation Voltage: 1000V AC
  • Rated Impulse Withstand Voltage: 8kV
  • Neutral Protection: Protected neutral with neutral setting equal to phase protection
  • Thermal Adjustment: 0.7–1.0 x In
  • Magnetic Adjustment: 7–12 x In
  • Utilisation Category: A
  • Mounting: Fixed front or rear connection; DIN-rail mounting capability
  • Mechanical Life: 25,000 operating cycles
  • Electrical Life: 10,000 cycles at 415V AC and rated current
  • Dimensions (H x L x W): 157mm x 88.7mm x 140mm
  • Weight: 2.5 kg
Key Features
  • 70kA short-circuit breaking capacity at 380/400/415V AC
  • Four-pole construction for three-phase and neutral protection
  • Thermal-magnetic release for overload and short-circuit protection
  • 250A rated current with adjustable thermal and magnetic trip settings
  • Protected neutral pole with protection matched to the phase poles
  • Suitable for isolation and switchboard main protection applications
  • Compact moulded-case design with fixed or accessory-supported mounting options
Professional Installation Requirements
  • Installation, testing and commissioning must be performed by a licensed electrician in accordance with applicable Australian wiring rules, switchboard requirements and manufacturer instructions. Correct fault-current coordination, conductor sizing and trip settings must be verified before energisation.
Applications
  • Main incoming protection in commercial and industrial switchboards
  • Three-phase distribution-board and panel protection
  • Feeder and submain circuit protection
  • Mains protection for HVAC, manufacturing and building-services systems
  • High fault-level installations requiring 70kA MCCB protection
Standards & Compliance
  • AS/NZS IEC 60947-2:2015 for low-voltage circuit-breakers
Environmental Benefits
  • Durable moulded-case construction supports extended service life and can reduce replacement waste
  • Copper and metal components are recyclable at end of service life
  • Adjustable protection settings can support correctly coordinated systems and reduce unnecessary equipment damage
  • Suitable for use in energy-efficient electrical distribution and building-services systems
Warranty Information

CHINT general warranty policy for other low-voltage apparatus provides 27 months from the date of manufacture when supplied 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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