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MCCB 3P 40A 150kA Thermal Magnetic 125A Frame NM8N Chint

BRAND: CABAC
SKU: 271705
$1,204.30 List price: $1,605.80
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Chint NM8N 40A 3P MCCB features 150kA breaking capacity, thermal-magnetic trip unit and a 125A frame. Ideal for switchboard mains and sub-mains protection.

Alternatively Known As: CHINT NM8N-125R TM 3P 40A MCCB, moulded case circuit breaker, adjustable thermal-magnetic circuit breaker

Technical Specifications
  • Series: NM8N-125R
  • Reference: NM8N-TM-125R-3P-40
  • Poles: 3P
  • Rated Current: 40A
  • Frame Size: 125A
  • Trip Unit: Adjustable thermal-magnetic TM
  • Rated Voltage: Up to 690V AC
  • Rated Ultimate Breaking Capacity: 150kA at 380/415V AC
  • Thermal Trip Adjustment: 0.7–1.0 x In
  • Magnetic Trip Setting: 10 x In for power distribution protection
  • Electrical Endurance: 8,000 operating cycles at AC415V
  • Mechanical Endurance: 15,000 operating cycles
  • Ingress Protection: IP40
  • Operating Temperature: -40°C to +70°C
  • Mounting: Fixed front connection or DIN rail mounting for the 125A frame
  • Dimensions (H x L x W): 140mm x 90mm x 78.5mm
  • Weight: 1.24 kg
Key Features
  • 150kA high breaking capacity at 380/415V AC
  • Three-pole protection for three-phase distribution systems
  • Adjustable thermal overload and magnetic short-circuit protection
  • 125A frame with a 40A rated current
  • Suitable for switchboard mains and sub-main protection
  • Supports AC applications up to 690V
  • Low-voltage moulded case circuit breaker design
  • Compatible with NM8N accessories including auxiliary contacts, shunt trips and undervoltage releases
Professional Installation Requirements
  • Installation, commissioning and protection-setting adjustments must be carried out by a licensed electrician in accordance with the manufacturer's instructions, applicable electrical regulations and AS/NZS 3000. Confirm prospective fault current, discrimination and Australian certification before use.
Applications
  • Switchboard mains protection
  • Sub-main protection
  • Commercial and industrial power distribution
  • Three-phase electrical equipment protection
  • Industrial control panels and distribution boards
  • Overload and short-circuit protection in low-voltage AC systems
Standards & Compliance
  • Applicable product standard: AS/NZS IEC 60947.2 for low-voltage circuit-breakers
  • Installation should comply with AS/NZS 3000 Wiring Rules
  • CHINT documentation identifies the NM8N series with IEC 60947-2 compliance; verify the specific unit's RCM or Australian certification before installation
Environmental Benefits
  • RoHS declaration is available for the NM8N series, supporting restricted-substance compliance
  • Long mechanical and electrical endurance can reduce replacement frequency and product waste
  • Thermal-magnetic protection helps prevent equipment damage and associated material waste caused by overloads and short circuits
  • Durable moulded-case construction is suitable for extended service life
Warranty Information

CHINT's general warranty policy covers other low-voltage apparatus for 27 months from the date of manufacture when supplied through authorised sales channels, subject to the applicable sales contract and warranty terms.

Available Now

Available through authorised CHINT distributors in Australia.

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