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MCCB 3P 225A 150kA Magnetic Only 250A Frame NM8N Chint

BRAND: CABAC
SKU: 271449
$3,110.10 List price: $4,146.80
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Chint NM8N 225A 3P MCCB features 150kA breaking capacity, magnetic-only trip unit for motor protection and a 250A frame. Ideal for switchboard mains protection.

Alternatively Known As: CHINT NM8N-250R-225/3 Magnetic MCCB, 225A 3-Phase Moulded Case Circuit Breaker, Motor Protection MCCB

Technical Specifications
  • Product Type: Moulded case circuit breaker
  • Series: NM8N
  • Frame Size: 250A
  • Rated Current: 225A
  • Number of Poles: 3P
  • Trip Unit: Magnetic-only electromagnetic release
  • Breaking Capacity: 150kA at 380V, 400V and 415V AC; 100kA at 440V AC
  • Magnetic Trip Setting: 9–14 times rated current for motor protection
  • Rated Operational Voltage: Up to 690V AC
  • Connection Type: Fixed front connection
  • Mechanical Endurance: Up to 15,000 operations
  • Electrical Endurance: Up to 1,500 operations
  • Dimensions (H x L x W): 157mm x 88.7mm x 105mm
  • Weight: 1.75 kg
Key Features
  • High 150kA short-circuit breaking capacity at common low-voltage system voltages
  • Magnetic-only trip unit intended for motor short-circuit protection
  • 250A frame accommodates the 225A rated current
  • Three-pole configuration for three-phase circuits
  • Adjustable instantaneous magnetic trip setting from 9 to 14 times rated current
  • Suitable for fixed installation in switchboards and motor control assemblies
  • Compact moulded case construction with optional accessories available separately
Professional Installation Requirements
  • Installation, selection and commissioning should be performed by a licensed electrical contractor in accordance with AS/NZS 3000, AS/NZS 61439 where installed in a switchboard assembly, and the manufacturer's instructions. A separate overload protection device is required where the magnetic-only MCCB does not provide thermal overload protection.
Applications
  • Switchboard mains and sub-main protection
  • Three-phase motor feeder short-circuit protection
  • Motor control centres and industrial distribution boards
  • Commercial and industrial power distribution
  • High-fault-current electrical installations
Standards & Compliance
  • Applicable product standard: AS/NZS IEC 60947.2 for low-voltage circuit-breakers
  • Installation and switchboard integration should follow AS/NZS 3000 and AS/NZS 61439 where applicable
Environmental Benefits
  • Metal components can be recovered for recycling at end of service life
  • RoHS declarations are available for the NM8N product range
  • Long mechanical and electrical endurance can reduce replacement frequency and material waste
  • Supports reliable protection of electrical systems, helping reduce damage from high-current short-circuit events
Warranty Information

CHINT's general warranty policy for other low-voltage apparatus provides 27 months from the date of manufacture when supplied through authorised sales channels; contract-specific terms may vary.

Available Now

Available through authorised CHINT distributors in Australia.

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