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MCCB 4P 250A 50kA Thermal Magnetic 400A Frame NM8N Chint

BRAND: CABAC
SKU: 268955
$2,911.60 List price: $3,882.10
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Chint NM8N 250A 4P MCCB features 50kA breaking capacity, thermal-magnetic trip unit with protected neutral and a 400A frame. Ideal for switchboard mains protection.

Alternatively Known As: CHINT NM8N-400S TM 250A 4P MCCB, moulded case circuit breaker, thermal-magnetic circuit breaker

Technical Specifications
  • Rated Current: 250 A
  • Frame Size: 400 A
  • Number of Poles: 4P
  • Breaking Capacity: 50 kA
  • Trip Unit: Thermal-magnetic, TM
  • Rated Voltage: AC 690 V or below
  • Thermal Trip Adjustment: 0.7–1.0 x In
  • Magnetic Trip Adjustment: 5–10 x In for power distribution protection
  • Neutral Protection: Protected neutral pole
  • Product Standard: IEC/EN 60947-2
  • Mounting: Fixed installation
  • Dimensions (H x L x W): 255mm x 213mm x 185mm
  • Weight: 6.63 kg
Key Features
  • 400A frame with a 250A rated current
  • 50kA short-circuit breaking capacity
  • Thermal-magnetic overload and short-circuit protection
  • Four-pole configuration with protected neutral
  • Suitable for low-voltage switchboards and mains protection
  • Adjustable thermal and magnetic trip settings
  • Suitable for AC 50/60Hz distribution systems
Professional Installation Requirements
  • Installation, selection, testing and commissioning should be performed by a licensed electrician in accordance with the manufacturer's instructions, AS/NZS 3000 and the requirements of the completed switchboard assembly.
Applications
  • Switchboard mains protection
  • Commercial and industrial low-voltage distribution boards
  • Building services and infrastructure power distribution
  • Feeder and incoming supply protection
  • Overload and short-circuit protection for electrical equipment
Standards & Compliance
  • Applicable product standard: AS/NZS IEC 60947.2 for low-voltage circuit breakers
  • Installation should comply with AS/NZS 3000 Wiring Rules
  • Switchboard integration should be assessed against the applicable AS/NZS 61439 requirements
Environmental Benefits
  • Long service life can reduce replacement frequency and associated material waste
  • Thermal-magnetic protection helps limit damage to connected electrical equipment during overload and short-circuit events
  • Metal and thermoplastic components may be recoverable through appropriate electrical equipment recycling streams
Warranty Information

CHINT warranty policy for other low-voltage apparatus provides 27 months from the date of manufacture against defects in materials and workmanship when sold through authorised sales channels; contract terms may vary.

Available Now

Available through authorised CHINT distributors in Australia.

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