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

BRAND: CABAC
SKU: 269503
$2,779.20 List price: $3,705.60
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30 Days Return Electricians Unlock Trade Access
Chint NM8N 315A 3P MCCB features 50kA breaking capacity, magnetic-only trip unit for motor protection and a 400A frame. Ideal for switchboard mains protection.

Alternatively Known As: CHINT NM8N-400S M 315 3P, 315A Magnetic Moulded Case Circuit Breaker, 3-Phase MCCB, Motor Protection MCCB

Technical Specifications
  • Product Type: Moulded case circuit breaker (MCCB)
  • Frame Size: 400A
  • Rated Current: 315A
  • Number of Poles: 3P
  • Release Type: Magnetic-only trip unit
  • Breaking Capacity: 50kA at 380/400/415VAC
  • Rated Operational Voltage: Up to 690VAC
  • Magnetic Trip Adjustment: Approximately 2,835–4,410A, equivalent to 9–14 × In
  • Frequency: 50/60Hz
  • Installation: Fixed mounting with front or rear connection options
  • Utilisation Category: Category A
  • Mechanical Durability: Up to 15,000 operating cycles
  • Electrical Durability: Up to 1,500 operating cycles
  • Standard Product Family: IEC 60947-2
  • Dimensions (H x L x W): 255mm x 113mm x 140mm
  • Weight: 5 kg
Key Features
  • High 50kA short-circuit breaking capacity at typical 415VAC system voltage
  • Magnetic-only release suited to motor circuit short-circuit protection
  • 400A frame accommodates a 315A rated current
  • Three-pole configuration for three-phase systems
  • Adjustable instantaneous magnetic trip setting
  • Suitable for fixed installation in switchboards and distribution assemblies
  • Separate overload protection should be provided where required because this model does not provide thermal overload protection
  • Compatible with selected NM8N accessories and auxiliary devices
Professional Installation Requirements
  • Installation, commissioning and adjustment must be performed by a licensed electrician or suitably qualified electrical contractor in accordance with the manufacturer's instructions, AS/NZS 3000 and applicable switchboard requirements. Motor applications require coordinated overload protection and short-circuit protection.
Applications
  • Three-phase motor feeder protection
  • Industrial switchboards and distribution boards
  • Commercial building power distribution
  • Switchboard mains or submain protection where coordinated overload protection is provided separately
  • Industrial machinery and high-fault-level electrical installations
Standards & Compliance
  • AS/NZS IEC 60947.2:2015 — applicable standard for low-voltage circuit-breakers
  • AS/NZS 3000:2018 — electrical installation requirements applicable to installation and wiring
Environmental Benefits
  • Long service life and high operating durability can reduce replacement frequency and associated waste
  • Metallic and polymeric components may be recoverable through appropriate electrical equipment recycling streams
  • Magnetic-only operation avoids the energy consumption associated with electronic trip units
Warranty Information

CHINT warranty policy provides 27 months from the date of manufacture for other low-voltage apparatus sold through authorised sales channels, subject to contract terms and exclusions for improper installation, misuse or unauthorised modification.

Available Now

Available through authorised CHINT distributors in Australia.

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