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1SFL431022R8511 ABB UA95-30-11-85 Capacitor Switching Contactor 3 Pole 1NO+1NC Auxiliary Contacts 380-400V 50Hz / 400-415V 60Hz Coil
ABB 1SFL431022R8511 UA95-30-11-85 three-phase capacitor contactor with 65 kvar rating at 400 V AC and 380–400 V AC coil designed for power factor correction systems.
£390.85
Why Choose the ABB 1SFL431022R8511 UA95-30-11-85 Capacitor Contactor?
The ABB 1SFL431022R8511 is a robust and reliable three-phase capacitor switching contactor designed for power factor correction systems, capacitor banks and industrial electrical distribution applications. As part of the ABB UA capacitor contactor series, the UA95-30-11-85 provides dependable switching of capacitive loads while managing the high inrush currents generated during capacitor energisation.
This capacitor contactor features integrated damping resistors and early-make auxiliary contacts to reduce switching stress and improve system reliability. Its dedicated capacitor switching design helps extend the service life of power factor correction equipment in demanding industrial installations.
With a rated reactive power capability of 65 kvar at 400 V AC, 50 Hz, three main normally open contacts, one normally open auxiliary contact, one normally closed auxiliary contact and a 380–400 V AC coil, the ABB UA95-30-11-85 is suitable for automatic capacitor bank systems and industrial power factor correction applications.
Key Advantages
- Dedicated ABB capacitor contactor solution for power factor correction systems.
- 65 kvar reactive power rating at 400 V AC.
- Designed specifically for capacitor bank switching applications.
- Integrated damping resistors reduce electrical stress during energisation.
- 380–400 V AC coil voltage for industrial control systems.
- Auxiliary contacts provide additional control and monitoring flexibility.
Key Features
- ABB UA95-30-11-85 capacitor contactor series.
- Three-pole main contact configuration.
- 3 normally open main contacts.
- 1 normally open and 1 normally closed auxiliary contact.
- 380–400 V AC 50 Hz / 400–415 V AC 60 Hz coil operation.
- 65 kvar capacitor switching capability at 400 V AC.
- Designed for three-phase capacitor switching applications.
- Maximum permissible peak current up to 30 times nominal RMS current.
- Compatible with ABB UA series accessories.
Reliable Capacitor Switching for Industrial Power Systems
Capacitor contactors such as the ABB UA95-30-11-85 are designed to control capacitor banks used for reactive power compensation. Their specialised construction reduces switching stress and helps maintain efficient operation of industrial electrical networks.
The ABB UA series provides engineers and panel builders with dependable solutions for automatic power factor correction equipment. The integrated damping system and auxiliary contact arrangement allow reliable integration into modern industrial control systems.
Typical Applications
- Automatic power factor correction panels.
- Industrial capacitor bank systems.
- Electrical distribution boards.
- Reactive power compensation equipment.
- Manufacturing plant energy management systems.
- Industrial automation installations.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Coil Voltage Range | 380–440 V | |
| Device Type | Capacitor Switching Contactor | |
| Poles | 3-pole | |
| Coil / Supply Voltage | 380 V AC, 400 V AC | |
| Auxiliary Contacts | 1NO + 1NC | |
| Coil Type | AC | |
| Manufacturer | ABB | |
| Series | UA Capacitor Contactors | |
| Model | 1SFL431022R8511 | |
| Product designation | UA95-30-11-85 | |
| Product type | Capacitor switching contactor | |
| Application | Power factor correction / capacitor switching | |
| Number of poles | 3 | |
| Main contacts | 3 NO | |
| Auxiliary contacts | 1 NO + 1 NC | |
| Rated reactive power | 65 kvar at 400 V AC, 50 Hz | |
| Control voltage | 380–400 V AC | |
| Control voltage at 60 Hz | 400–415 V AC | |
| Frequency | 50 / 60 Hz | |
| Maximum permissible peak current | 30 times nominal RMS current | |
| Rated insulation voltage | 1000 V | |
| Mounting type | Panel mounting | |
| Connection type | Screw terminals | |
| Dimensions (H × W × D) | approx. 148 × 102 × 123.5 mm | |
| Weight | approx. 2 kg |
Frequently Asked Questions
What is the ABB 1SFL431022R8511 used for?
The ABB 1SFL431022R8511 is a capacitor contactor used for switching capacitor banks in power factor correction systems.
What capacitor power rating does this contactor support?
The ABB UA95-30-11-85 supports capacitor loads up to approximately 65 kvar at 400 V AC and 50 Hz.
What coil voltage does the contactor require?
The contactor operates with a 380–400 V AC 50 Hz control coil.
How many auxiliary contacts are included?
The ABB UA95-30-11-85 includes 1 normally open and 1 normally closed auxiliary contact for control and monitoring purposes.
Where is this contactor typically installed?
The ABB UA95-30-11-85 is typically installed inside power factor correction panels and industrial electrical distribution systems.
Trusted by Industry Professionals Worldwide
ABB capacitor contactors are widely used by electrical engineers, panel builders and industrial manufacturers to deliver reliable reactive power management and efficient power factor correction solutions.
