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MCCB 4P 20A 150kA Thermal Magnetic 125A Frame NM8N Chint

BRAND: CABAC
SKU: 271722
$1,455.80 List price: $1,941.00
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Chint NM8N 20A 4P MCCB features 150kA breaking capacity, thermal-magnetic trip unit with protected neutral and a 125A frame. Ideal for switchboard mains protection.

Alternatively Known As: CHINT NM8N-125R thermal-magnetic moulded case circuit breaker, 4P MCCB, high-breaking-capacity circuit breaker

Technical Specifications
  • Rated Current: 20 A
  • Frame Size: 125 A
  • Number of Poles: 4P
  • Trip Unit: Thermal-magnetic
  • Neutral Protection: Protected neutral pole
  • Ultimate Breaking Capacity: 150 kA at 380/415 V AC
  • Rated Operational Voltage: 380–415 V AC, with ratings available up to 690 V AC
  • Rated Insulation Voltage: 1,000 V
  • Rated Impulse Withstand Voltage: 8 kV
  • Rated Frequency: 50/60 Hz
  • Thermal Trip Adjustment: 0.7–1.0 x In
  • Magnetic Trip Setting: 10 x In for power-distribution protection
  • Utilisation Category: A
  • Mounting: Fixed front connection
  • Mechanical Life: Up to 25,000 operating cycles
  • Dimensions (H x L x W): 140mm x 78.5mm x 120mm
  • Weight: 1.55 kg
Key Features
  • High 150kA short-circuit breaking capacity at 380/415V AC
  • Four-pole configuration for three-phase and neutral switching
  • Protected neutral for improved four-pole circuit protection
  • Thermal-magnetic overload and short-circuit protection
  • 125A frame with a 20A rated operating current
  • Suitable for main and feeder protection in commercial and industrial switchboards
  • Can be installed with line entry from the top or bottom
  • Supports vertical or horizontal installation orientation
Professional Installation Requirements
  • Installation, testing and commissioning must be performed by a licensed electrician in accordance with AS/NZS 3000, the switchboard manufacturer's requirements and applicable local regulations. Confirm fault-level coordination and discrimination before installation.
Applications
  • Switchboard main protection
  • Commercial and industrial distribution boards
  • Three-phase low-voltage power distribution
  • Feeder and incomer protection
  • Industrial machinery and infrastructure distribution systems
Standards & Compliance
  • AS/NZS IEC 60947.2:2015 — applicable standard for low-voltage circuit-breakers and MCCBs; verify specific Australian certification and installation suitability for the supplied unit
  • Manufacturer-declared product standard: IEC/EN 60947-2
Environmental Benefits
  • Long mechanical service life can reduce replacement frequency and associated waste
  • Effective fault interruption helps limit damage to downstream electrical equipment
  • Durable moulded-case construction supports extended service life in fixed switchboard installations
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 the applicable contract and warranty conditions.

Available Now

Available through authorised CHINT distributors in Australia.

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