QX4 Star-Delta Starter Cabinet
The QX4 star-delta starter cabinet is a professional reduced-voltage motor control solution developed by Zhejiang NENA Electric (Xinhang Electric), specially engineered for 380V 50Hz three-phase squirrel-cage induction motors ranging from 15kW up to 135kW. As a low-inrush-current motor starter panel, it solves the core pain point of heavy starting current impacting industrial…
The QX4 star-delta starter cabinet is a professional reduced-voltage motor control solution developed by Zhejiang NENA Electric (Xinhang Electric), specially engineered for 380V 50Hz three-phase squirrel-cage induction motors ranging from 15kW up to 135kW.
As a low-inrush-current motor starter panel, it solves the core pain point of heavy starting current impacting industrial power grids: star-delta starting cuts startup surge current to only 1/3 of direct-on-line (DOL) starting, protecting transformers, cables and other electrical equipment from overload shock.
We provide two installation configurations: wall-mounted compact type for small-power motors and floor-standing heavy-duty cabinet for high-power industrial loads. The control cabinet fits both indoor and outdoor factory environments, widely adopted for air compressors, water/oil pumps, ventilation fans and material conveyors. After 33 years of industrial optimization based on global client feedback, the QX4 series delivers stable, long-lasting motor startup performance with complete multi-layer safety protection.
1 Flexible Installation & Wide Compatibility
- Feature: Dual wall-mounted / floor-standing structural options, full power range covering 15kW~135kW, support indoor & outdoor installation
- Advantage: Multiple cabinet size specs match different motor power and site space limits
- Benefit: One product series meets all small & medium industrial motor control demands, no extra customized cabinet re-development cost
2 Grid-Friendly Energy Saving Star-Delta Starting
- Feature: Standard star-delta reduced voltage starting logic
- Advantage: Motor starting in star connection first, switch to delta after speed stabilization; startup current reduced by 67% vs DOL starter
- Benefit: Avoid power grid voltage drop, lower facility power consumption, extend service life of motors and distribution devices
3 Full-Range Integrated Safety Protection
- Feature: Built-in overcurrent, short circuit, thermal overload triple protection system
- Advantage: Automatic power cut-off when motor overheats, short circuit or abnormal current occurs
- Benefit: Prevent motor burnout and electrical fire, reduce equipment maintenance downtime & repair expense
4 Robust Enclosure & Harsh Environment Adaptability
- Feature: Thickened cold-rolled steel cabinet, dust-proof, moisture-resistant, anti-temperature fluctuation design
- Advantage: Stable shell structure resists workshop dust, humidity and seasonal temperature changes
- Benefit: Long service life without frequent cabinet rust or component failure, suitable for mining, chemical, water treatment workshops
5 User-Friendly Operation & Easy Maintenance
- Feature: Intuitive front panel with ammeter, voltmeter, start/stop indicator lights & physical control buttons; clear internal wiring layout
- Advantage: Real-time voltage & current monitoring at a glance, fault diagnosis and wiring inspection without disassembly
- Benefit: Reduce operator error risk, shorten daily inspection & maintenance time for electricians
6 Customizable OEM & ODM Service
- Feature: Support customized cabinet size, control logic, button layout and extra protection modules
- Advantage: Adjust configuration according to special motor power or factory automation requirements
- Benefit: Match unique production line control standards for global factory clients
- Dual installation styles: wall-mounted compact cabinet for 15-90kW, floor-standing vertical cabinet for 22-135kW high-power motors
- Rated working condition: AC 380V, 50Hz, maximum matched motor power 135kW
- Complete monitoring system: front-panel analog ammeter + voltmeter to track real-time motor running status
- Standard control components: high-quality AC contactor, thermal relay, time relay, circuit breaker inside the cabinet
- Humanized control panel: yellow power indicator, green running light, red fault alarm light; independent start & stop physical push buttons
- Neat internal wiring: color-coded copper busbars, insulated wiring terminals, clear cable routing for safe overhaul
- Lockable cabinet door: anti-theft & accidental touch design, prevent unauthorized operation of motor control system
- Strict factory testing: every QX4 star delta starter panel passes full load aging test before delivery to guarantee stable performance
| Specifications(kW) | Overall dimensions (mm) | ||
| High | Width | Thick | |
| 15-37 | 520 | 310 | 205 |
| 45-75 | 610 | 455 | 240 |
| 90 | 670 | 480 | 260 |
| Specifications(kW) | Overall dimensions (mm) | ||
| High | Width | Thick | |
| 22-30 | 750 | 435 | 295 |
| 37-75 | 870 | 435 | 315 |
| 90 | 950 | 451 | 360 |
| 115-135 | 1200 | 550 | 445 |
| 160-260 | 1320 | 600 | 470 |
Related Products
