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MCCB 3P 315A 50kA Thermal Magnetic 400A Frame NM8N Chint

BRAND: CABAC
SKU: 268948
$1,786.60 List price: $2,382.20
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Chint NM8N 315A 3P MCCB features 50kA breaking capacity, thermal-magnetic trip unit and a 400A frame. Ideal for switchboard mains and sub-mains protection.

Alternatively Known As: CHINT moulded case circuit breaker, 315A MCCB, 3P thermal-magnetic circuit breaker, NM8N-400S TM 315 3P

Technical Specifications
  • Product Type: Moulded case circuit breaker
  • Frame Size: 400A
  • Rated Current: 315A
  • Number of Poles: 3P
  • Trip Unit: Thermal-magnetic
  • Ultimate Breaking Capacity: 50kA
  • Service Breaking Capacity: 50kA
  • Rated Operational Voltage: 380/400/415V AC, with ratings available up to 690V AC
  • Rated Frequency: 50/60Hz
  • Rated Insulation Voltage: 1000V
  • Rated Impulse Withstand Voltage: 12kV
  • Selectivity Category: A
  • Reference Product Standard: IEC/EN 60947-2
  • Mechanical Durability: Up to 20,000 operating cycles
  • Electrical Durability: Up to 1,500 operating cycles at higher voltage ratings
  • Dimensions (H x L x W): 255mm x 140mm x 113mm
  • Weight: 5.735 kg
Key Features
  • 3-pole protection for three-phase distribution circuits
  • Thermal protection for overload conditions
  • Magnetic protection for short-circuit conditions
  • 50kA short-circuit breaking capacity
  • 400A frame with 315A rated current
  • Suitable for switchboard mains, sub-mains and industrial distribution circuits
  • Compatible with CHINT NM8N accessories, subject to configuration
  • Adjustable thermal and magnetic trip settings
Professional Installation Requirements
  • Installation, commissioning and adjustment should be performed by a licensed electrician in accordance with AS/NZS 3000, the switchboard manufacturer's requirements and the circuit breaker's installation instructions. Verify fault levels, discrimination, cable capacity and protection settings before energisation.
Applications
  • Main incoming protection in low-voltage switchboards
  • Sub-main protection in commercial and industrial electrical distribution systems
  • Three-phase feeder protection
  • Industrial machinery and plant distribution boards
  • High fault-level power distribution applications
Standards & Compliance
  • AS/NZS IEC 60947.2:2015 is the applicable Australian/New Zealand product standard for low-voltage circuit-breakers
  • AS/NZS 3000 applies to selection, installation and wiring of the circuit breaker within electrical installations
  • AS/NZS 61439 may apply to the complete low-voltage switchboard or assembly in which the MCCB is installed
Environmental Benefits
  • Long mechanical and electrical service life can reduce replacement frequency and associated material waste
  • Metallic conductive components and thermoplastic enclosure materials may be recoverable through appropriate electrical equipment recycling streams
  • Thermal-magnetic protection helps limit damage to cables and downstream equipment during overloads and short circuits
Warranty Information

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

Available Now

Available through authorised CHINT distributors in Australia.

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