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MCCB 3P 125A 70kA Thermal Magnetic 250A Frame NM8N Chint

BRAND: CABAC
SKU: 271195
$926.40 List price: $1,235.20
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Chint NM8N 125A 3P MCCB features 70kA breaking capacity, thermal-magnetic trip unit and a 250A frame. Ideal for switchboard mains and sub-mains protection.

Alternatively Known As: Moulded Case Circuit Breaker, 3-Phase MCCB, Thermal-Magnetic Circuit Breaker, NM8N-250Q TM 125A 3P

Technical Specifications
  • Breaker Type: Moulded case circuit breaker
  • Poles: 3P
  • Rated Current: 125A
  • Frame Size: 250A
  • Trip Unit: Adjustable thermal-magnetic
  • Thermal Adjustment Range: 0.7–1.0 x In, equivalent to 87–125A
  • Rated Operational Voltage: 380/400/415V AC, with ratings also available up to 690V AC
  • Frequency: 50/60Hz
  • Rated Insulation Voltage Ui: 1000V
  • Rated Impulse Withstand Voltage Uimp: 8kV
  • Ultimate Short-Circuit Breaking Capacity Icu: 70kA at 380/400/415V AC
  • Service Short-Circuit Breaking Capacity Ics: 70kA at 380/400/415V AC
  • Utilisation Category: A
  • Isolation Function: Suitable for isolation
  • Mechanical Endurance: Up to 25,000 switching cycles
  • Electrical Endurance: Up to 10,000 switching cycles at 415V and rated current
  • Operating Temperature: -40°C to +70°C
  • Arcing Distance: Zero
  • Dimensions (H x L x W): 157mm x 88.7mm x 105mm
  • Weight: 2.14 kg
Key Features
  • High 70kA short-circuit breaking capacity at 380–415V AC
  • Three-pole protection for three-phase distribution systems
  • Thermal-magnetic trip unit for overload and short-circuit protection
  • Adjustable thermal current setting from 87A to 125A
  • Compact 250A frame suitable for switchboard mains and sub-mains
  • Suitable for fixed low-voltage distribution applications
  • Designed for vertical or horizontal mounting with top or bottom line entry
  • Optional auxiliary, alarm, shunt-trip and undervoltage accessories are available for the NM8N range
Professional Installation Requirements
  • Installation, testing and commissioning must be performed by a licensed electrical contractor in accordance with AS/NZS 3000, applicable switchboard requirements and the manufacturer's instructions. Confirm prospective fault current, discrimination, cable capacity and Australian certification before energising.
Applications
  • Main switchboard incoming protection
  • Commercial and industrial sub-main protection
  • Three-phase distribution boards
  • Motor and equipment feeder protection where the thermal-magnetic characteristics are suitable
  • Low-voltage AC power distribution systems
Standards & Compliance
  • Applicable Australian/New Zealand product standard: AS/NZS IEC 60947.2:2015, Low-voltage switchgear and controlgear, Part 2: Circuit-breakers
  • CHINT product documentation specifies IEC/EN 60947-2; verify RCM registration and local certification for the exact product before installation in Australia
Environmental Benefits
  • Metal and thermoplastic components can be recovered through appropriate electrical equipment recycling streams at end of service life
  • Long mechanical and electrical endurance can reduce replacement frequency and associated material waste
  • Thermal-magnetic protection helps prevent damage to cables and connected equipment caused by overloads and short circuits
Warranty Information

CHINT's general warranty policy for other low-voltage apparatus provides 27 months from the date of manufacture when purchased through authorised sales channels. Contract terms and local distributor conditions may vary.

Available Now

Available through authorised CHINT distributors in Australia.

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