Trade Discount 25%
ATS 4P 250A High Breaking Type B 250A Frame NXZM Chint
Chint NXZM 250A 4P ATS features CB class changeover, Type B intelligent controller, high breaking capacity and 250A frame. Ideal for mains-generator changeover.
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Alternatively Known As: NXZM-250H/4B 250A ATS, 250A Automatic Changeover Switch, Mains-Generator Transfer Switch, 4-Pole ATS
Technical Specifications
- Series: NXZM
- Model: NXZM-250H/4B 250A
- Configuration: Class CB automatic transfer switching equipment
- Frame Current: 250 A
- Rated Current: 250 A
- Number of Poles: 4P
- Rated Operational Voltage: 400/415 V AC, 50 Hz
- Rated Insulation Voltage: AC 1000 V
- Rated Impulse Withstand Voltage: 12 kV
- High Breaking Capacity: 50 kA rated short-circuit breaking capacity
- Rated Short-Circuit Making Capacity: 105 kA
- Controller: Type B intelligent controller
- Rated Control Supply Voltage: 230/240 V AC, 50 Hz
- Control Voltage Range: 85–110% of rated control voltage
- Operating Transfer Time: 3.3 seconds ±10%
- Mechanical Endurance: 6000 operations
- Electrical Endurance: 2000 operations
- Installation Mode: Integrated or split controller installation
- Mounting: Surface mounting with flat-facing bar connections
- Dimensions (H x L x W): 240mm x 393mm x 216mm
- Weight: 9.76 kg
Key Features
- Automatic transfer between normal mains and generator supplies
- Four-pole switching for three-phase, four-wire systems
- Type B intelligent controller with supply monitoring and automatic transfer and restoration
- High breaking capacity suitable for installations with elevated prospective fault current
- Supports grid-generator and grid-grid operating modes
- Adjustable transfer and return delay functions
- Undervoltage, overvoltage and phase-failure transfer functions
- Manual operating handle for local control and isolation
- Generator start control and fire-control feedback functions
- RS485 communication available through the controller configuration
Professional Installation Requirements
- Installation, testing and commissioning must be carried out by a licensed electrical contractor. The installation must be designed for the available fault level and completed in accordance with AS/NZS 3000 and AS/NZS 3010, including correct neutral, earthing, generator interlocking and changeover arrangements.
Applications
- Automatic mains-generator changeover
- Standby power systems
- Commercial and industrial switchboards
- High-rise buildings and critical infrastructure
- Manufacturing and processing facilities
- Data, telecommunications and other continuity-of-supply installations
Standards & Compliance
- Applicable equipment standard: AS/NZS 60947.6.1 for automatic transfer switching equipment
- Applicable low-voltage switchgear requirements: AS/NZS 60947.1
- Generator changeover installation requirements: AS/NZS 3010:2017
- Fixed electrical installation requirements: AS/NZS 3000:2018
Environmental Benefits
- Automatic transfer helps maintain continuity of supply and can reduce disruption-related equipment losses
- Durable moulded-case construction and rated operating endurance support extended service life
- Metal components can be recovered and recycled at end of service life
- Replaceable or serviceable control and switching components can reduce whole-unit replacement waste
Warranty Information
CHINT’s general warranty policy provides 27 months from the date of manufacture for other low-voltage apparatus supplied through authorised sales channels, unless a different period is specified in the sales contract. Australian consumer guarantees may also apply.
Available Now
Available through authorised CHINT distributors in Australia.
