SCHNAP Logo

Making Trade Life Easy!
Trade Discount 25%

MCCB 4P 250A 36kA Thermal Magnetic 400A Frame NM8N Chint

BRAND: CABAC
SKU: 268943
$2,646.90 List price: $3,529.20
+ −
30 Days Return Electricians Unlock Trade Access
Chint NM8N 250A 4P MCCB features 36kA breaking capacity, thermal-magnetic trip unit with protected neutral and a 400A frame. Ideal for switchboard mains protection.

Alternatively Known As: CHINT NM8N-400C TM 250A 4P MCCB, 4-pole moulded case circuit breaker, thermal-magnetic circuit breaker

Technical Specifications
  • Device Type: Moulded case circuit breaker
  • Frame Size: 400A
  • Rated Current: 250A
  • Number of Poles: 4P
  • Trip Unit: Adjustable thermal-magnetic
  • Breaking Capacity: 36kA at AC 380/400/415V
  • Rated Insulation Voltage Ui: 1000V
  • Rated Impulse Withstand Voltage Uimp: 8kV
  • Rated Operational Voltage: AC up to 690V, 50/60Hz
  • Overload Setting: 0.7-1.0 x In, approximately 175-250A
  • Magnetic Trip Setting: 5-10 x In, approximately 1.25-2.5kA
  • Neutral Protection: Protected neutral pole configuration
  • Utilisation Category: A
  • Isolation Suitability: Suitable for isolation
  • Connection: Fixed, front connection
  • Dimensions (H x L x W): 157mm x 140mm x 88.7mm
  • Weight: 2.5 kg
Key Features
  • 36kA short-circuit breaking capacity at common low-voltage supply voltages
  • Adjustable thermal-magnetic protection for overload and short-circuit faults
  • Four-pole switching for three-phase and neutral circuits
  • Protected neutral configuration for switchboard mains protection
  • 400A frame with a 250A rated current
  • Suitable for fixed installation in low-voltage distribution switchboards
  • Mechanical endurance rated at up to 25,000 operating cycles
Professional Installation Requirements
  • Installation, testing and commissioning must be performed by a licensed electrical contractor in accordance with applicable wiring rules, manufacturer instructions, fault-level calculations and switchboard requirements. Verify terminal torque, conductor sizing, discrimination and local approval requirements before energisation.
Applications
  • Switchboard mains protection
  • Three-phase commercial and industrial distribution boards
  • Building services and plant electrical distribution
  • Data centre and infrastructure power distribution
  • Protection of feeders, submains and downstream distribution equipment
Standards & Compliance
  • Designed to IEC/EN 60947-2 for low-voltage circuit breakers; AS/NZS IEC 60947.2 is the applicable Australian/New Zealand MCCB standard. Confirm product certification and RCM marking before installation in Australia.
Environmental Benefits
  • Metal components can be recovered and recycled at end of service life
  • Durable construction and long mechanical life can reduce replacement frequency and material waste
  • Overload and short-circuit protection helps reduce damage to connected electrical equipment
  • Does not contain or handle refrigerants or other high-global-warming-potential gases
Warranty Information

CHINT general warranty policy for other low-voltage apparatus is 27 months from the date of manufacture when purchased through authorised sales channels; contractual terms may vary.

Available Now

Available through authorised CHINT distributors in Australia.

Related Products