ABB UA50-30-00-85 three-pole capacitor switching contactor with 380–400 V AC coil designed for reliable power factor correction applications.
£347.35
The ABB UA50-30-00-85 is a specialised three-pole capacitor switching contactor designed for reliable control of capacitor banks in power factor correction systems. As part of the robust ABB UA capacitor contactor series, it is engineered to manage high inrush currents during capacitor switching while providing dependable performance in industrial electrical installations.
This contactor is specifically developed for switching capacitor loads rather than standard motor applications. The UA series uses a block-type design with dedicated switching technology that helps limit the effects of capacitor charging currents, improving system reliability and extending operational life in power compensation equipment.
With a rated reactive power capability of 33 kvar at 400 V AC and a 380–400 V AC 50 Hz / 400–415 V AC 60 Hz control coil, the ABB UA50-30-00-85 is ideal for automatic power factor correction panels, industrial capacitor banks and electrical distribution systems.
Capacitor contactors such as the ABB UA50-30-00-85 are designed to switch capacitor banks safely and efficiently in automatic power factor correction systems. Their specialised construction reduces the impact of high charging currents that occur when capacitors are energised.
The ABB UA series provides dependable switching performance for industrial electrical networks, helping maintain efficient power usage and improve the reliability of compensation equipment in demanding applications.
| Manufacturer | ABB |
|---|---|
| Series | UA Capacitor Contactors |
| Model | UA50-30-00-85 |
| Product ID | 1SBL351022R8500 |
| Product type | Capacitor switching contactor |
| Number of main contacts | 3 NO |
| Auxiliary contacts | 0 NO + 0 NC |
| Rated reactive power | 33 kvar at 400 V AC |
| Control voltage | 380–400 V AC 50 Hz / 400–415 V AC 60 Hz |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage | 1000 V |
| Terminal type | Screw terminals |
| Protection rating | IP20 coil terminals / IP10 main terminals |
| Mounting type | DIN rail or screw mounting |
| Dimensions (H × W × D) | approx. 110 × 70 × 108 mm |
| Weight | approx. 1.16 kg |
This contactor is designed for switching capacitor banks in power factor correction and industrial compensation systems.
The ABB UA50-30-00-85 supports capacitor loads up to 33 kvar at 400 V AC.
The contactor operates with a 380–400 V AC 50 Hz / 400–415 V AC 60 Hz control supply.
The contactor includes three normally open main contacts for capacitor switching applications.
The contactor is typically installed inside electrical control panels, automatic power factor correction systems and industrial distribution equipment.
ABB UA capacitor contactors are widely used by electrical engineers and automation professionals to provide reliable capacitor switching, efficient power management and dependable operation in industrial installations.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...