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MCB 1P 100A B Curve 10kA 125A Frame NXB Chint

BRAND: CABAC
SKU: 816085
$38.50 List price: $51.30
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Chint NXB-125G MCB 1P 100A features B curve release, 10kA breaking capacity, and 230V rating with positive isolation. Ideal for high-current circuits.

Alternatively Known As: 1P MCB, Single-Pole Miniature Circuit Breaker, Thermal-Magnetic Circuit Breaker, DIN-Rail Circuit Breaker

Technical Specifications
  • Product Type: Miniature circuit breaker
  • Frame Rating: 125A
  • Rated Current: 100A
  • Number of Poles: 1P
  • Trip Characteristic: B curve, 3–5 times rated current
  • Rated Voltage: 230V AC
  • Rated Frequency: 50/60Hz
  • Rated Short-Circuit Breaking Capacity: 10kA Icn
  • Rated Service Short-Circuit Capacity: 7.5kA Ics
  • Rated Impulse Withstand Voltage: 4kV
  • Power Consumption: 10W per pole at 100A
  • Mechanical Life: 20,000 operating cycles
  • Electrical Life: 6,000 operating cycles
  • Mounting: TH35 DIN rail
  • Terminal Capacity: 16–50mm²
  • Maximum Tightening Torque: 3.5N·m
  • Protection Rating: IP20 direct mounting; IP40 when installed in a distribution enclosure
  • Operating Temperature: -35°C to +70°C
  • Storage Temperature: -35°C to +85°C
  • Dimensions (H x L x W): 75.5mm x 27mm x 80.5mm
  • Weight: 0.25 kg
Key Features
  • Overload and short-circuit protection
  • B-curve thermal-magnetic release for low-inrush resistive circuits
  • Positive isolation function
  • 10kA rated short-circuit breaking capacity
  • Compact 1-pole DIN-rail format
  • Top or bottom cable entry
  • Suitable for compatible CHINT auxiliary and shunt-trip accessories
  • 125A frame accommodates high-current circuit protection
Professional Installation Requirements
  • Installation, selection and testing must be carried out by a licensed electrician in accordance with applicable electrical regulations and AS/NZS 3000. Confirm cable sizing, fault level, discrimination and local conformity requirements before energising.
Applications
  • Single-phase distribution boards
  • High-current resistive circuits
  • Commercial and industrial electrical installations
  • Control panels and machinery supply circuits
  • Overload and short-circuit protection for compatible 230V AC circuits
Standards & Compliance
  • Manufacturer-declared compliance: IEC/EN 60898-1
  • AS/NZS 60898.1:2024 is the applicable Australian/New Zealand product standard for AC miniature circuit-breakers up to 125A; verify AS/NZS conformity and required Australian marking before installation
  • Installation requirements are governed by AS/NZS 3000
Environmental Benefits
  • RoHS and REACH-related compliance documentation is available for the NXB-125G range
  • Thermal-magnetic protection can reduce damage to cables and connected equipment, helping extend system service life
  • Durable DIN-rail construction supports replacement reduction and lower material waste over the service life
Warranty Information

CHINT warranty policy provides 27 months from the date of manufacture for other low-voltage apparatus, including low-voltage circuit-breakers, when purchased through authorised sales channels; contract terms may vary.

Available Now

Available through authorised CHINT distributors in Australia.

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