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MCCB 4P 315A 50kA Thermal Magnetic 400A Frame NM8N Chint

BRAND: CABAC
SKU: 268956
$2,911.60 List price: $3,882.10
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Chint NM8N 315A 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 315A 4P MCCB, 315A moulded case circuit breaker, 50kA 4-pole MCCB

Technical Specifications
  • Frame Size: 400A
  • Rated Current: 315A
  • Number of Poles: 4P
  • Trip Unit: Thermal-magnetic, TM
  • Breaking Capacity: 50kA at 380/400/415V AC
  • Rated Operational Voltage: 380/400/415V AC, 50/60Hz
  • Maximum Operational Voltage: 690V AC
  • Rated Insulation Voltage: 1000V AC
  • Rated Impulse Withstand Voltage: 8kV
  • Thermal Adjustment Range: 0.7–1.0 × In
  • Magnetic Trip Setting: Fixed at 10 × In
  • Neutral Protection: Neutral pole protected with the same thermal setting as the phase poles
  • Utilisation Category: A
  • Mounting: Fixed, plug-in or DIN-rail mounting options available
  • Electrical Endurance: Up to 4,000 cycles at 415V AC
  • Mechanical Endurance: Up to 15,000 cycles
  • Ingress Protection: IP00, or IP40 when fitted with terminal covers
  • Dimensions (H x L x W): 255mm x 185mm x 113mm
  • Weight: 6.7 kg
Key Features
  • 400A frame with a 315A rated current
  • Four-pole configuration for three-phase systems with neutral protection
  • 50kA ultimate and service short-circuit breaking capacity at 380/400/415V AC
  • Thermal-magnetic protection against overload and short-circuit faults
  • Adjustable thermal trip from 70% to 100% of rated current
  • Suitable for switchboard mains, feeders and low-voltage power distribution
  • Isolation function suitable for circuit disconnection
  • Compatible with auxiliary contacts, shunt trips, undervoltage releases and operating accessories
Professional Installation Requirements
  • Installation, selection and commissioning should be performed by a licensed electrical contractor in accordance with AS/NZS 3000, the manufacturer's instructions and applicable switchboard requirements. Confirm prospective fault current, discrimination, cable rating and neutral protection settings before installation.
Applications
  • Main incoming protection in commercial and industrial switchboards
  • Low-voltage power distribution systems
  • Feeder and sub-main protection
  • Protection of large HVAC, motor-control and industrial electrical loads
  • Three-phase installations requiring a protected neutral pole
Standards & Compliance
  • AS/NZS 60947.2 is the applicable Australian/New Zealand standard for low-voltage circuit-breakers
  • AS/NZS 3000 applies to installation within Australian electrical installations
  • The NM8N series is specified by the manufacturer to IEC/EN 60947-2; verify Australian certification and RCM requirements for the supplied unit
Environmental Benefits
  • Copper, aluminium and steel components can be recovered through appropriate electrical equipment recycling streams
  • RoHS declarations are available for the NM8N series, supporting restriction of hazardous substances
  • Long mechanical and electrical service life can reduce replacement frequency and associated waste
  • Accurate overload and short-circuit protection helps prevent damage to downstream electrical equipment
Warranty Information

Warranty coverage is subject to the CHINT Australia and authorised distributor terms applying to the purchase. Confirm the applicable warranty period and conditions at the time of order.

Available Now

Available through authorised CHINT distributors in Australia.

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