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MCCB 4P 225A 100kA Thermal Magnetic 250A Frame NM8N Chint

BRAND: CABAC
SKU: 271235
$1,786.60 List price: $2,382.20
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Chint NM8N 225A 4P MCCB features 100kA breaking capacity, thermal-magnetic trip unit with protected neutral and a 250A frame. For switchboard mains protection.

Alternatively Known As: CHINT NM8N-250H TM 225 4C, 225A 4-pole moulded-case circuit breaker, 250A frame MCCB

Technical Specifications
  • Circuit Breaker Type: Moulded-case circuit breaker for power distribution
  • Frame Size: 250A
  • Rated Current: 225A
  • Number of Poles: 4P
  • Neutral Protection: Protected neutral pole, 4C configuration
  • Trip Unit: Thermal-magnetic, TM
  • Ultimate Breaking Capacity: 100kA at 380–440V AC
  • Service Breaking Capacity: 100kA at 380–440V AC
  • Rated Operational Voltage: Up to 690V AC
  • Rated Insulation Voltage: 1000V
  • Rated Impulse Withstand Voltage: 8kV
  • Frequency: 50/60Hz
  • Thermal Adjustment: 0.7–1.0 times rated current
  • Magnetic Adjustment: 5–10 times rated current for 180–250A distribution models
  • Utilisation Category: A
  • Installation: Fixed mounting with front connection
  • Ingress Protection: IP40
  • Operating Temperature: -40°C to +70°C
  • Pollution Degree: 3
  • Mechanical Endurance: 15,000 operations
  • Electrical Endurance: Up to 6,000 operations at rated current
  • Dimensions (H x L x W): 157mm x 88.7mm x 140mm
  • Weight: 2.5 kg
Key Features
  • 100kA high short-circuit breaking capacity at common low-voltage distribution voltages
  • Four-pole construction for three-phase and neutral switching
  • Protected neutral pole for enhanced neutral conductor protection
  • Thermal-magnetic trip unit for overload and short-circuit protection
  • 250A frame accommodates rated currents from 125A to 250A
  • Suitable for switchboard incomer and mains protection applications
  • Fixed front-connection design for panel and switchboard installation
  • Wide operating temperature range from -40°C to +70°C
Professional Installation Requirements
  • Installation, selection and commissioning must be carried out by a licensed electrician in accordance with the manufacturer's instructions, applicable switchboard requirements and AS/NZS 3000. Confirm fault levels, discrimination, cable ratings and required Australian approvals before energising.
Applications
  • Switchboard mains protection
  • Three-phase commercial and industrial distribution boards
  • Low-voltage power distribution systems
  • Main incomer protection for commercial buildings and industrial facilities
  • Protection of feeders and busbar sections against overload and short circuit
Standards & Compliance
  • IEC/EN 60947-2 for low-voltage moulded-case circuit-breakers
  • AS/NZS 3000:2018 for installation within Australian low-voltage electrical installations
Environmental Benefits
  • RoHS material compliance is declared for the NM8N product family
  • Long mechanical and electrical service life can reduce replacement frequency and associated waste
  • Thermal-magnetic protection helps prevent equipment damage and premature component replacement
Warranty Information

CHINT's general warranty policy for low-voltage apparatus provides 27 months from the date of manufacture against defects in materials and workmanship when purchased through authorised sales channels; contractual or local distributor terms may differ.

Available Now

Available through authorised CHINT distributors in Australia.

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