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1SBL241024R8610 ABB UA26-30-10RA 3 Pole 3NO 1NO Auxiliary Contact Capacitor Switching Contactor 400-415V 50Hz / 415-440V 60Hz
ABB UA26-30-10RA-86 1SBL241024R8610 is a 3-pole capacitor switching contactor with pre-insertion resistors, 3 NO main contacts, 1 NO auxiliary contact, a 22 kVAr AC-6b rating at 400 V and a 400–415 V 50 Hz / 415–440 V 60 Hz AC coil.
£108.65
Why Choose the ABB UA26-30-10RA-86 Capacitor Contactor?
The ABB UA26-30-10RA-86, product ID 1SBL241024R8610, is a 3-pole capacitor switching contactor with pre-insertion resistors designed for controlling capacitor banks in industrial power factor correction systems. As part of the ABB UA..RA contactor range, it is specifically designed for applications where capacitor energisation can produce peak currents far exceeding 100 times the nominal RMS current.
The UA26-30-10RA-86 features three normally open main contacts and one normally open built-in auxiliary contact. Under AC-6b duty, it is rated for capacitor banks up to 22 kvar at 400 V. The integrated pre-insertion resistors help limit the high inrush current generated when capacitors are energised, reducing switching stress on the contactor and associated electrical equipment.
Its AC-operated laminated magnet circuit uses a 400–415 V AC coil at 50 Hz or 415–440 V AC at 60 Hz. Screw-terminal connections provide secure wiring, while the compact 120 × 54 × 126.3 mm construction makes the UA26-30-10RA-86 suitable for integration into automatic power factor correction panels and industrial capacitor switching assemblies.
Key Advantages
- Purpose-designed 3-pole contactor for capacitor bank switching.
- 22 kvar AC-6b capacitor switching rating at 400 V.
- Integrated pre-insertion resistors help limit capacitor energisation inrush current.
- Suitable for installations where peak current can far exceed 100 times the nominal RMS current.
- Integrated 1 NO auxiliary contact for signalling and control functions.
- 400–415 V AC 50 Hz / 415–440 V AC 60 Hz coil for high-voltage AC control circuits.
Key Features
- ABB UA..RA capacitor contactor series.
- 3 NO main contacts.
- 1 NO built-in auxiliary contact.
- Integrated pre-insertion resistors for inrush current limitation.
- 22 kvar AC-6b rated operational power at 400 V.
- 400–415 V AC 50 Hz or 415–440 V AC 60 Hz control voltage.
- AC-operated control circuit with laminated magnet circuit.
- Screw-terminal connections for straightforward panel wiring.
- 120 mm height and 54 mm width for compact panel integration.
- 0.710 kg product weight.
Reliable Capacitor Switching with Inrush Current Limitation
Energising capacitor banks can generate extremely high transient currents that place considerable electrical and mechanical stress on switching equipment. The ABB UA26-30-10RA-86 incorporates pre-insertion resistors that help limit the initial current peak during capacitor energisation before the main contacts complete the switching operation.
This dedicated design allows the UA26-30-10RA-86 to be used in installations where peak current can far exceed 100 times the nominal RMS current. Its 22 kvar rating at 400 V and high-voltage AC control coil make it well suited to automatic power factor correction and reactive power compensation systems.
Typical Applications
- Industrial power factor correction systems.
- Automatic capacitor bank panels.
- Reactive power compensation equipment.
- Capacitor banks with high energisation inrush currents.
- Industrial electrical distribution systems.
- Power factor correction cabinets and assemblies.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Poles | 3-pole | |
| Coil Voltage Range | 380–440 V | |
| Device Type | Capacitor Switching Contactor | |
| Auxiliary Contacts | 1NO | |
| Coil Type | AC | |
| Manufacturer | ABB | |
| Series | UA..RA | |
| Model | UA26-30-10RA-86 | |
| Product ID | 1SBL241024R8610 | |
| Product type | 3-pole capacitor switching contactor with pre-insertion resistors | |
| Number of main poles | 3 | |
| Main contacts | 3 NO | |
| Auxiliary contacts | 1 NO | |
| Control voltage at 50 Hz | 400–415 V AC | |
| Control voltage at 60 Hz | 415–440 V AC | |
| AC-6b rated operational power | 22 kvar at 400 V | |
| Control circuit | AC operated with laminated magnet circuit | |
| Inrush current limitation | Pre-insertion resistors | |
| Terminal type | Screw terminals | |
| Dimensions (H × W × D) | 120 × 54 × 126.3 mm | |
| Weight | 0.710 kg |
Frequently Asked Questions
What is the ABB UA26-30-10RA-86 used for?
The ABB UA26-30-10RA-86 is a 3-pole contactor designed for switching capacitor banks in industrial power factor correction and reactive power compensation systems.
What capacitor bank rating does the UA26-30-10RA-86 support?
The UA26-30-10RA-86 has an AC-6b rated operational power of 22 kvar at 400 V.
What coil voltage does the ABB UA26-30-10RA-86 require?
The contactor uses a 400–415 V AC coil at 50 Hz or 415–440 V AC at 60 Hz.
Why does the UA26-30-10RA-86 have pre-insertion resistors?
The pre-insertion resistors help limit the high inrush current generated when a capacitor bank is energised, reducing switching stress on the contactor and associated electrical equipment.
What contacts does the UA26-30-10RA-86 have?
The UA26-30-10RA-86 has three normally open main contacts and one normally open built-in auxiliary contact.
Trusted Capacitor Switching from ABB
ABB UA..RA contactors combine dedicated capacitor switching technology with pre-insertion resistors to limit high energisation currents, providing dependable control for industrial power factor correction and reactive power compensation systems.
