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MCCB 3P 125A 50kA Magnetic Only 250A Frame NM8N Chint

BRAND: CABAC
SKU: 271427
$2,580.70 List price: $3,440.90
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Chint NM8N 125A 3P MCCB features 50kA breaking capacity, magnetic-only trip unit for motor protection and a 250A frame. Ideal for switchboard mains protection.

Alternatively Known As: CHINT NM8N-250 Magnetic MCCB, 125A Motor Protection Circuit Breaker, 3-Phase Moulded Case Circuit Breaker

Technical Specifications
  • Product Type: Moulded case circuit breaker (MCCB)
  • Series: NM8N
  • Frame Rating: 250A
  • Rated Current: 125A
  • Number of Poles: 3P
  • Trip Unit: Magnetic-only motor protection
  • Instantaneous Trip Setting: Adjustable from 7 to 12 times rated current for 125A to 160A units
  • Ultimate Breaking Capacity (Icu): 50kA at 380/400/415V AC
  • Service Breaking Capacity (Ics): 50kA at 380/400/415V AC
  • Rated Operational Voltage: 380/400/415V, 440V, 500V and 660/690V AC
  • Rated Insulation Voltage (Ui): 1,000V
  • Rated Impulse Withstand Voltage (Uimp): 8kV
  • Rated Frequency: 50/60Hz
  • Utilisation Category: A
  • Installation Type: Fixed mounting, front connection
  • Dimensions (H x L x W): 157mm x 88.7mm x 105mm
  • Weight: 1.85 kg
Key Features
  • Magnetic-only trip unit designed for motor protection applications
  • 250A frame accommodates a 125A rated current
  • 50kA short-circuit breaking capacity at standard three-phase supply voltages
  • Adjustable instantaneous magnetic trip setting
  • Suitable for isolation when installed in accordance with the applicable requirements
  • Compact 3-pole design for switchboards and distribution assemblies
  • Compatible with optional CHINT NM8N auxiliary and alarm accessories
Professional Installation Requirements
  • Installation, selection and commissioning must be performed by a licensed electrician in accordance with AS/NZS 3000, the switchboard manufacturer's requirements and the circuit breaker's installation instructions. Confirm fault level, conductor sizing, coordination and motor starting characteristics before installation.
Applications
  • Motor feeder and motor control protection
  • Switchboard mains and sub-mains protection
  • Industrial and commercial distribution boards
  • Three-phase equipment protection
  • Short-circuit protection for motor circuits where thermal overload protection is provided separately or by the motor control system
Standards & Compliance
  • Designed and tested to IEC/EN 60947-2 for low-voltage circuit-breakers
  • AS/NZS IEC 60947.2:2015 is the applicable Australian/New Zealand circuit-breaker standard for this product category
  • Installation within a switchboard must also consider AS/NZS 3000 and the applicable AS/NZS 61439 requirements
Environmental Benefits
  • Resettable protection allows the breaker to be returned to service after a trip, reducing replacement waste compared with single-use protective devices
  • Long mechanical and electrical service life can reduce product replacement frequency
  • Metal components may be recoverable through appropriate electrical equipment recycling streams
Warranty Information

CHINT warranty policy specifies 27 months from the date of manufacture for other low-voltage apparatus sold through authorised sales channels. Contractual or regional warranty conditions may vary.

Available Now

Available through authorised CHINT distributors in Australia.

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