ABB UA75-30-00RA three-pole capacitor switching contactor with 220-230 V AC coil, integrated damping resistors and 690 V AC rated operational voltage for industrial capacitor bank control applications.
£590.19
The ABB UA75-30-00RA (1SBL411024R8000) is a specialised three-pole capacitor switching contactor designed for reliable control of capacitor banks in industrial power factor correction systems. As part of the ABB UA..RA contactor range, it is engineered for applications where capacitor switching creates high inrush current peaks, providing dependable operation in demanding electrical installations.
This contactor includes an integrated front-mounted damping resistor block that inserts three resistors into the circuit to limit current peaks during capacitor energisation. The resistors also provide capacitor precharging to reduce the secondary current peak when the main contacts close, allowing the contactor to be used without additional inductances.
With a 220–230 V AC 50 Hz / 230–240 V AC 60 Hz control coil, a 690 V AC rated operational voltage and a three-pole configuration, the ABB UA75-30-00RA is suitable for industrial capacitor switching and power factor correction applications requiring controlled energisation.
Capacitor switching contactors are designed specifically for controlling capacitor banks used in power factor correction systems. By managing high transient currents during energisation, specialised contactors such as the ABB UA75-30-00RA help improve switching reliability and protect electrical components.
The ABB UA..RA series combines robust mechanical construction with integrated damping technology, making it suitable for industrial electrical installations where capacitor switching reliability and long service life are essential.
| Manufacturer | ABB |
|---|---|
| Series | UA..RA Capacitor Switching Contactors |
| Model | UA75-30-00RA |
| Product type | Capacitor switching contactor |
| Product ID | 1SBL411024R8000 |
| Main contacts | 3 NO |
| Main poles | 3P |
| Control voltage | 220–230 V 50 Hz / 230–240 V 60 Hz |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage | 1000 V |
| Rated impulse withstand voltage | 8 kV |
| Rated operational power AC-6b | 60 kvar at 400 V AC, 40 °C |
| Protection rating | IP20 coil terminals / IP10 main terminals |
| Mounting type | DIN rail or screw mounting |
| Dimensions (H × W × D) | 150 × 70 × 140.4 mm |
| Weight | approx. 1.35 kg |
This contactor is designed for switching capacitor banks in industrial power factor correction systems.
The UA75-30-00RA uses a 220–230 V 50 Hz / 230–240 V 60 Hz AC control circuit.
The ABB UA75-30-00RA is a three-pole contactor with three main normally open contacts.
The integrated damping resistors limit capacitor energisation current peaks and provide capacitor precharging during switching operations.
The UA75-30-00RA supports a rated operational voltage of up to 690 V AC.
ABB UA..RA capacitor switching contactors are widely used in industrial power correction systems to provide reliable capacitor bank control, reduced switching stress and dependable electrical performance.
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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...