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MCCB 4P 250A 150kA Standard Electronic 250A Frame NM8N Chint

BRAND: CABAC
SKU: 271420
$2,977.70 List price: $3,970.30
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Chint NM8N 250A 4P MCCB features 150kA breaking capacity, standard electronic trip unit with protected neutral and a 250A frame. For switchboard mains protection.

Alternatively Known As: NM8N-250R 4P MCCB, 250A moulded case circuit breaker, 4-pole electronic MCCB, main switch circuit breaker

Technical Specifications
  • Rated Current: 250 A
  • Number of Poles: 4P
  • Frame Size: 250 A
  • Ultimate Breaking Capacity Icu: 150 kA at 415 V AC
  • Release Type: EM standard electronic trip unit for power distribution
  • Neutral Protection: Adjustable protected neutral pole
  • Rated Operational Voltage: Up to 690 V AC, 50/60 Hz
  • Rated Insulation Voltage Ui: 1,000 V
  • Rated Impulse Withstand Voltage Uimp: 8 kV
  • Protection Functions: Long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection
  • Long-Time Current Setting Ir: 0.4–1.0 x In
  • Short-Time Current Setting Isd: 1.5–10 x In, with OFF setting
  • Instantaneous Current Setting Ii: 2–12 x In, with OFF setting
  • Utilisation Category: A
  • Mounting: Fixed installation with front connection
  • Standard: IEC/EN 60947-2
  • Dimensions (H x L x W): 157mm x 88.7mm x 140mm
  • Weight: 2.65 kg
Key Features
  • Four-pole protection for three-phase systems with neutral
  • 150 kA ultimate short-circuit breaking capacity at 415 V AC
  • Standard electronic trip unit with adjustable protection settings
  • Protected neutral with adjustable neutral current protection
  • Suitable for switchboard incomer and mains protection applications
  • High insulation voltage and impulse withstand rating
  • Front-connected fixed mounting configuration
  • Compatible with optional MCCB accessories subject to configuration
Professional Installation Requirements
  • Installation, configuration and testing must be performed by a licensed electrician or suitably qualified electrical professional in accordance with AS/NZS 3000, applicable switchboard requirements and the manufacturer's instructions. Protection settings must be coordinated with the installation design and prospective fault current.
Applications
  • Switchboard mains and incomer protection
  • Commercial and industrial distribution boards
  • Power centre and low-voltage switchboards
  • Three-phase four-wire distribution systems
  • Protection of feeders, busbars and large electrical loads
  • Industrial power distribution systems requiring high fault-current interruption capacity
Standards & Compliance
  • AS/NZS 60947.2 for low-voltage switchgear and controlgear circuit-breakers is the applicable Australian/NZ product standard
  • AS/NZS 3000 Wiring Rules apply to the electrical installation and connection
  • Switchboard assemblies incorporating the MCCB may also require assessment to AS/NZS 61439
Environmental Benefits
  • RoHS declaration is available for the NM8N series, supporting restriction of hazardous substances in manufacture
  • Copper and other metallic components can be recovered and recycled at end of service life
  • Adjustable electronic protection can improve fault discrimination and reduce unnecessary equipment replacement
  • Long service life helps reduce replacement frequency and material waste
Warranty Information

CHINT warranty policy specifies 27 months from the date of manufacture for other low-voltage apparatus sold through authorised sales channels; contract-specific warranty terms may vary.

Available Now

Available through authorised CHINT distributors in Australia.

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