SCHNAP Logo

Making Trade Life Easy!
Trade Discount 25%

MCCB 3P 250A 50kA Magnetic Only 250A Frame NM8N Chint

BRAND: CABAC
SKU: 271432
$2,580.70 List price: $3,440.90
+ −
30 Days Return Electricians Unlock Trade Access
Chint NM8N 250A 3P MCCB features 50kA breaking capacity, magnetic-only trip unit for motor protection and a 250A frame. Ideal for switchboard mains protection.

Alternatively Known As: CHINT NM8N-250S M 250 3P MCCB, Magnetic-Only Moulded Case Circuit Breaker, Motor Protection MCCB

Technical Specifications
  • Product Type: Moulded case circuit breaker
  • Rated Current: 250A
  • Frame Size: 250A
  • Number of Poles: 3P
  • Release Type: Magnetic-only instantaneous release
  • Magnetic Trip Setting: 9–14 x In, approximately 2,250–3,500A
  • Rated Operational Voltage: 380/400/415V AC, 440V AC, 500V AC and 660/690V AC
  • Rated Insulation Voltage: 1,000V AC
  • Rated Impulse Withstand Voltage: 8kV
  • Ultimate Breaking Capacity Icu: 50kA at 380/400/415V AC
  • Service Breaking Capacity Ics: 50kA at 380/400/415V AC
  • Rated Frequency: 50/60Hz
  • Utilisation Category: A
  • Mechanical Life: 25,000 operations
  • Electrical Life: 10,000 operations at 415V AC and 2,000 operations at 690V AC
  • Connection Type: Fixed, front or rear connection options
  • Dimensions (H x L x W): 157mm x 105mm x 89mm
  • Weight: 2 kg
Key Features
  • Magnetic-only trip unit for short-circuit protection
  • Suitable for motor protection when used with a contactor and thermal overload relay
  • 50kA breaking capacity at common low-voltage supply ratings
  • Adjustable instantaneous magnetic trip setting from 9 to 14 times rated current
  • Three-pole construction for three-phase switchboards
  • Compatible with optional auxiliary, shunt-trip, undervoltage and mechanical accessories
  • Designed for industrial and commercial low-voltage power distribution
Professional Installation Requirements
  • Installation, connection and testing must be carried out by a licensed electrician in accordance with manufacturer instructions, AS/NZS 3000 and applicable switchboard requirements. A separate thermal overload relay is required for motor overload protection because this model has magnetic-only protection.
Applications
  • Three-phase switchboard mains protection
  • Motor short-circuit protection with a contactor and thermal overload relay
  • Industrial and commercial low-voltage power distribution
  • Feeders, incomers and high-current distribution circuits
Standards & Compliance
  • AS/NZS IEC 60947.2:2015 for low-voltage circuit-breakers
  • AS/NZS 3000:2018 applies to installation within Australian electrical installations
Environmental Benefits
  • Long mechanical and electrical service life can reduce replacement frequency and associated material waste
  • Metal and thermoplastic components may be recoverable for recycling at end of service life, subject to local recycling facilities
  • Magnetic-only construction avoids the additional thermal sensing components used in thermal-magnetic trip units
Warranty Information

CHINT warranty policy provides 27 months from the date of manufacture for other low-voltage apparatus sold through authorised channels; contract and regional warranty terms may vary.

Available Now

Available through authorised CHINT distributors in Australia.

Related Products