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MCCB 3P 125A 50kA Basic Electronic 250A Frame NM8N Chint

BRAND: CABAC
SKU: 391979
$1,679.20 List price: $2,238.90
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Chint NM8N 125A 3P MCCB features 50kA breaking capacity, basic electronic trip unit and a 250A frame. Ideal for switchboard mains and sub-mains protection.

Alternatively Known As: CHINT NM8N-250S Electronic MCCB, 3P 125A Moulded Case Circuit Breaker, Electronic Main Circuit Breaker

Technical Specifications
  • Rated Current: 125A listing configuration
  • Number of Poles: 3P
  • Frame Size: 250A
  • Breaking Capacity: 50kA at AC 380/400/415V
  • Trip Unit: EN basic electronic release for power distribution
  • Long-Time Current Setting: Adjustable from 0.4 to 1.0 times rated frame current
  • Protection Functions: Long-time overload, short-time short-circuit and instantaneous short-circuit protection
  • Rated Operational Voltage: Up to 690V AC, 50/60Hz
  • Rated Insulation Voltage: 1000V
  • Rated Impulse Withstand Voltage: 8kV
  • Utilisation Category: A
  • Ingress Protection: IP40
  • Operating Temperature: -35°C to +70°C for basic electronic trip versions
  • Mechanical Endurance: Up to 25,000 operating cycles
  • Electrical Endurance: Up to 10,000 cycles at AC 415V rated current
  • Dimensions (H x L x W): 157mm x 88.7mm x 105mm
  • Weight: 2 kg
Key Features
  • Three-pole moulded case circuit breaker for low-voltage power distribution
  • 50kA ultimate short-circuit breaking capacity at 380/400/415V AC
  • 250A frame with electronic protection adjusted for the 125A listing configuration
  • Basic electronic trip unit with adjustable long-time, short-time and instantaneous protection
  • Suitable for switchboard mains, sub-mains and industrial distribution boards
  • Can be mounted vertically or horizontally with top or bottom line entry
  • Fixed, plug-in and front or rear connection arrangements are available within the NM8N range
  • Optional shunt release, under-voltage release, motor operator, auxiliary contacts and terminal accessories
Professional Installation Requirements
  • Installation, adjustment and commissioning must be performed by a licensed electrician in accordance with the manufacturer's instructions, AS/NZS 3000 and applicable switchboard requirements. Confirm fault level, discrimination, cable sizing, enclosure clearances and trip settings before energisation.
Applications
  • Main switchboard protection
  • Sub-main circuit protection
  • Commercial building distribution boards
  • Industrial control panels and switchboards
  • Power distribution circuits requiring adjustable electronic overload and short-circuit protection
  • Data centre, infrastructure and plant distribution systems
Standards & Compliance
  • Designed to the IEC/EN 60947-2 circuit-breaker standard; Australian installations should be assessed against AS/NZS IEC 60947.2:2015 and AS/NZS 3000 requirements
Environmental Benefits
  • Durable moulded-case construction and high operating endurance can reduce replacement frequency and associated waste
  • Adjustable electronic protection can help limit equipment damage and reduce unnecessary component replacement
  • Replaceable accessories and serviceable protection components can extend the useful life of the switchboard assembly
  • Metal and polymer components may be recoverable through appropriate electrical equipment recycling streams at end of life
Warranty Information

CHINT low-voltage apparatus sold through authorised channels is covered for manufacturing defects for 27 months from the date of manufacture, subject to the applicable sales contract, installation requirements and warranty exclusions.

Available Now

Available through authorised CHINT distributors in Australia.

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