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1SBL281022R8110 ABB UA30-30-10 24V 50Hz / 24V 60Hz 3 Pole Capacitor Switching Contactor 3NO 1NO Auxiliary Contact 24V Coil
ABB UA30-30-10 is a three-pole capacitor-switching contactor with a 24 V AC 50/60 Hz coil, three normally open main contacts and one normally open auxiliary contact for power-factor correction systems.
£116.77
Why Choose the ABB UA30-30-10 Capacitor Contactor?
The ABB UA30-30-10, product code 1SBL281022R8110, is a robust three-pole capacitor-switching contactor designed for controlling capacitor banks in industrial power-factor correction systems. Its application-specific design supports dependable switching of capacitive loads where high transient currents can occur during energisation.
Part of the established ABB UA contactor series, the UA30-30-10 combines three normally open main contacts with one built-in normally open auxiliary contact. The compact block-type construction supports integration into capacitor-control panels and can be extended with compatible ABB auxiliary contact blocks and accessories.
This exact model features a 24 V AC 50/60 Hz control coil and is designed for power circuits with operational voltages up to 690 V AC. Screw-terminal connections provide secure wiring for industrial power-factor correction and reactive-power compensation equipment.
Key Advantages
- Purpose-designed contactor for capacitor-bank switching.
- 24 V AC 50/60 Hz control coil for low-voltage control circuits.
- Three normally open main contacts for three-phase capacitor systems.
- Built-in normally open auxiliary contact for signalling or interlocking.
- Block-type construction supports compact control-panel installation.
- Compatible with a range of ABB auxiliary contact blocks and accessories.
Key Features
- ABB UA30 capacitor-switching contactor.
- Three-pole main-contact configuration.
- One built-in normally open auxiliary contact.
- 24 V AC coil operation at 50/60 Hz.
- 690 V maximum operational voltage.
- Designed for switching capacitive loads in power-factor correction systems.
- Screw-terminal connections for secure industrial wiring.
- Compact block design for electrical control cabinets.
Reliable Capacitor-Bank Switching
Capacitor contactors are designed to switch capacitive loads used for reactive-power compensation and power-factor correction. These applications can produce significant transient currents when capacitor stages are energised, requiring a contactor specifically selected for the characteristics of the capacitor bank.
The ABB UA series provides application-specific switching for capacitor installations. The built-in auxiliary contact can support signalling or control-system interlocking, while the block construction enables straightforward integration into automatic power-factor correction panels.
Typical Applications
- Automatic power-factor correction panels.
- Three-phase capacitor banks.
- Reactive-power compensation systems.
- Industrial electrical distribution panels.
- Commercial building power-factor correction.
- Manufacturing and process-plant electrical systems.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Poles | 3-pole | |
| Coil Voltage Range | 24 V | |
| Device Type | Capacitor Switching Contactor | |
| Coil / Supply Voltage | 24 V AC | |
| Auxiliary Contacts | 1NO | |
| Coil Type | AC | |
| Manufacturer | ABB | |
| Series | UA30 | |
| Model | UA30-30-10 | |
| Product code | 1SBL281022R8110 | |
| Product type | Capacitor-switching contactor | |
| Main contacts | 3 NO + 0 NC | |
| Auxiliary contacts | 1 NO + 0 NC | |
| Control voltage | 24 V AC | |
| Control frequency | 50/60 Hz | |
| Rated operational voltage | Up to 690 V AC | |
| Terminal type | Screw terminals | |
| Construction | Three-pole block contactor |
Frequently Asked Questions
What is the ABB UA30-30-10 used for?
This contactor is designed for switching capacitor banks in industrial and commercial power-factor correction systems.
What control voltage does this contactor require?
The UA30-30-10 operates from a 24 V AC control supply at 50/60 Hz.
What main contacts does this model have?
This model has three normally open main contacts for switching three-phase capacitor circuits.
Does the contactor include an auxiliary contact?
Yes. The UA30-30-10 includes one built-in normally open auxiliary contact for signalling or control functions.
Can this contactor be used as a standard motor contactor?
The UA30-30-10 is specifically designed for capacitor-bank switching; contactor selection should always be based on the load type and the capacitor system’s switching requirements.
Trusted Power-Factor Control from ABB
ABB UA contactors are used by panel builders and electrical engineers to provide dependable capacitor-bank switching in industrial and commercial power-factor correction systems.
