ABB UA26-30-10-88 1SBL241022R8810 is a 3-pole capacitor switching contactor with one normally open auxiliary contact, a 20 kVAr AC-6b rating at 400 V and a 230–240 V 50 Hz / 240–260 V 60 Hz AC coil.
£134.96
The ABB UA26-30-10-88, product ID 1SBL241022R8810, is a 3-pole capacitor switching contactor designed for controlling capacitor banks in industrial power factor correction systems. As part of the ABB UA contactor range, it is specifically developed for capacitor switching applications where peak inrush current does not exceed 100 times the nominal RMS current.
The UA26-30-10-88 features three main poles and one normally open auxiliary contact. Under AC-6b duty, the UA26 size is rated for capacitor banks up to 20 kvar at 400 V at an ambient temperature up to 40 °C, with a maximum accepted peak current of 3 kA. Capacitors must be discharged to a residual terminal voltage of no more than 50 V before being re-energised.
Its AC-operated laminated magnet circuit uses a 230–240 V AC coil at 50 Hz or 240–260 V AC at 60 Hz. The block-type construction, screw-terminal connections and compact 90 × 54 × 93.6 mm dimensions make the UA26-30-10-88 suitable for installation within power factor correction panels and industrial capacitor switching assemblies.
Capacitor switching places demanding electrical stresses on contactors because energising a capacitor bank can produce high transient inrush currents. The ABB UA26-30-10-88 is specifically designed for switching capacitor banks where the peak inrush current does not exceed 100 times the nominal RMS current, providing a dedicated solution for industrial power factor correction systems.
When used under the specified operating conditions, the capacitors must be discharged before they are re-energised, with a maximum residual voltage of 50 V at their terminals. Under these conditions, ABB specifies an electrical durability of 100,000 operating cycles for the UA contactor.
| Manufacturer | ABB |
|---|---|
| Series | UA |
| Model | UA26-30-10-88 |
| Product ID | 1SBL241022R8810 |
| Product type | 3-pole capacitor switching contactor |
| Number of main poles | 3 |
| Auxiliary contacts | 1 NO |
| Control voltage at 50 Hz | 230–240 V AC |
| Control voltage at 60 Hz | 240–260 V AC |
| AC-6b rated operational power | 20 kvar at 400 V and ambient temperature up to 40 °C |
| Maximum accepted peak current | 3 kA |
| Maximum residual capacitor voltage before re-energisation | 50 V |
| Electrical durability | 100,000 operating cycles under specified capacitor switching conditions |
| Control circuit | AC operated with laminated magnet circuit |
| Protection rating | IP20 at coil terminals |
| Terminal type | Screw terminals |
| Dimensions (H × W × D) | 90 × 54 × 93.6 mm |
| Net weight | 0.600 kg |
The ABB UA26-30-10-88 is a 3-pole contactor designed for switching capacitor banks, particularly in industrial power factor correction and reactive power compensation systems.
The UA26-30-10-88 has an AC-6b rated operational power of 20 kvar at 400 V at ambient temperatures up to 40 °C.
The contactor uses a 230–240 V AC coil at 50 Hz or 240–260 V AC at 60 Hz.
The UA26-30-10-88 has one normally open auxiliary contact for signalling and control functions.
Yes. The capacitors must be discharged to a residual terminal voltage of no more than 50 V before being re-energised by the contactor.
ABB UA contactors are designed specifically for capacitor switching applications, providing dependable control of capacitor banks and supporting industrial power factor correction systems where high switching inrush currents must be managed reliably.
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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...