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MCCB 4P 40A 100kA Thermal Magnetic 125A Frame NM8N Chint

BRAND: CABAC
SKU: 271685
$1,336.70 List price: $1,782.20
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Chint NM8N 40A 4P MCCB features 100kA breaking capacity, thermal-magnetic trip unit with protected neutral and a 125A frame. Ideal for switchboard mains protection.

Alternatively Known As: CHINT NM8N 4P MCCB, Moulded Case Circuit Breaker, 40A 100kA MCCB, Thermal-Magnetic Circuit Breaker

Technical Specifications
  • Product Series: NM8N-125H
  • Circuit Breaker Type: Moulded case circuit breaker
  • Number of Poles: 4P
  • Rated Current: 40 A
  • Frame Size: 125 A, Frame 21
  • Trip Unit: Thermal-magnetic
  • Neutral Protection: Protected neutral
  • Rated Voltage: 380/415 Vac
  • Maximum Operational Voltage: 690 Vac
  • Insulation Voltage Ui: 1000 Vac
  • Impulse Withstand Voltage Uimp: 8 kV
  • Ultimate Breaking Capacity Icu: 100 kA at AC 380/400/415 V
  • Service Breaking Capacity Ics: 100 kA at AC 380/400/415 V
  • Utilisation Category: Category A
  • Ingress Protection: IP00; IP40 with terminal covers
  • Adjustable Current Range: 0.7–1.0 x In
  • Reference Standard: EN 60947-2
  • Connection Type: Fixed front connection
  • Dimensions (H x L x W): 140mm x 120mm x 78.5mm
  • Weight: 1.55 kg
Key Features
  • High 100kA short-circuit breaking capacity
  • Four-pole configuration for three-phase and neutral systems
  • Thermal-magnetic overload and short-circuit protection
  • Protected neutral for improved four-wire circuit protection
  • 125A frame with a 40A rated current
  • Suitable for isolation applications
  • Compatible with a range of optional MCCB accessories
  • Designed for industrial and commercial low-voltage distribution
Professional Installation Requirements
  • Installation, selection and commissioning must be carried out by a licensed electrician in accordance with AS/NZS 3000, the manufacturer's instructions and applicable switchboard requirements. Verify fault levels, discrimination, conductor sizing and terminal protection before energising.
Applications
  • Switchboard mains protection
  • Low-voltage commercial distribution boards
  • Industrial power distribution panels
  • Three-phase four-wire installations
  • Power centres and motor control centre applications
  • Protection of feeders and downstream distribution equipment
Standards & Compliance
  • AS/NZS IEC 60947.2:2015 for low-voltage circuit breakers
  • AS/NZS 3000:2018 for electrical installation and switchboard application requirements
Environmental Benefits
  • Metallic conductors and structural components can be recovered for recycling at end of service life
  • Long mechanical and electrical service life can reduce replacement frequency and product waste
  • Overload and short-circuit protection helps prevent damage to connected electrical equipment and associated material waste
Warranty Information

CHINT's general warranty policy for other low-voltage apparatus provides 27 months from the date of manufacture against defects in materials and workmanship when purchased through authorised sales channels. Contractual or regional terms may vary.

Available Now

Available through authorised CHINT distributors in Australia.

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