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1SBL241022R8410 ABB UA26-30-10 3 Pole 3NO 1NO Auxiliary Contact Capacitor Switching Contactor 110V 50Hz / 110-120V 60Hz
ABB UA26-30-10-84 1SBL241022R8410 is a 3-pole capacitor switching contactor with 3 NO main contacts, 1 NO auxiliary contact, a 20 kvar AC-6b rating at 400 V and a 110 V 50 Hz / 110–120 V 60 Hz AC coil.
£87.72
Why Choose the ABB UA26-30-10-84 Capacitor Contactor?
The ABB UA26-30-10-84, product ID 1SBL241022R8410, 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 designed for capacitor switching applications where inrush current peaks are less than or equal to 100 times the nominal RMS current.
The UA26-30-10-84 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 20 kvar at 400 V. The 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 110 V AC coil at 50 Hz or 110–120 V AC at 60 Hz. The block-type construction, screw terminals and compact 90 × 54 × 93.6 mm dimensions make the UA26-30-10-84 suitable for installation within power factor correction panels and other industrial capacitor switching assemblies.
Key Advantages
- Purpose-designed 3-pole contactor for capacitor bank switching.
- 20 kvar AC-6b rating at 400 V for power factor correction applications.
- Suitable for capacitor switching where peak inrush current is no more than 100 times nominal RMS current.
- Integrated 1 NO auxiliary contact for signalling and control functions.
- 110 V AC 50 Hz / 110–120 V AC 60 Hz coil for AC control circuits.
- Designed for an electrical durability of 100,000 operating cycles under specified capacitor switching conditions.
Key Features
- ABB UA capacitor contactor series.
- 3 NO main contacts.
- 1 NO built-in auxiliary contact.
- 20 kvar AC-6b rated operational power at 400 V.
- 110 V AC 50 Hz or 110–120 V AC 60 Hz control voltage.
- 690 V rated operational voltage.
- 1000 V IEC rated insulation voltage.
- 8 kV rated impulse withstand voltage.
- IP20 coil terminals.
- Screw-terminal connections for straightforward panel wiring.
Reliable Switching for Capacitor Banks
Capacitor switching places demanding electrical stresses on contactors because energising a capacitor bank can produce high transient inrush currents. The ABB UA26-30-10-84 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, the UA26-30-10-84 is designed for an electrical durability of 100,000 operating cycles.
Typical Applications
- Industrial power factor correction systems.
- Automatic capacitor bank panels.
- Reactive power compensation equipment.
- Industrial electrical distribution systems.
- Power factor correction cabinets.
- Machinery and installations requiring switched capacitor banks.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Coil Voltage Range | 100–130 V | |
| Device Type | Capacitor Switching Contactor | |
| Poles | 3-pole | |
| Auxiliary Contacts | 1NO | |
| Coil Type | AC | |
| Manufacturer | ABB | |
| Series | UA | |
| Model | UA26-30-10-84 | |
| Product ID | 1SBL241022R8410 | |
| Product type | 3-pole capacitor switching contactor | |
| Number of poles | 3 | |
| Main contacts | 3 NO | |
| Auxiliary contacts | 1 NO | |
| Control voltage at 50 Hz | 110 V AC | |
| Control voltage at 60 Hz | 110–120 V AC | |
| AC-6b rated operational power | 20 kvar at 400 V | |
| Rated operational voltage | 690 V | |
| Rated insulation voltage | 1000 V IEC / 600 V UL/CSA | |
| Rated impulse withstand voltage | 8 kV | |
| Maximum residual capacitor voltage before re-energisation | 50 V | |
| Electrical durability | 100,000 operating cycles under specified capacitor switching conditions | |
| Maximum mechanical switching frequency | 3600 cycles per hour | |
| Protection rating | IP20 at coil terminals | |
| Terminal type | Screw terminals | |
| Maximum operating altitude | 3000 m | |
| Dimensions (H × W × D) | 90 × 54 × 93.6 mm | |
| Net weight | 0.6 kg |
Frequently Asked Questions
What is the ABB UA26-30-10-84 used for?
The ABB UA26-30-10-84 is a 3-pole contactor designed for switching capacitor banks, particularly in industrial power factor correction and reactive power compensation systems.
What capacitor bank rating does the UA26-30-10-84 support?
The UA26-30-10-84 has an AC-6b rated operational power of 20 kvar at 400 V.
What coil voltage does the ABB UA26-30-10-84 require?
The contactor uses a 110 V AC coil at 50 Hz or 110–120 V AC at 60 Hz.
What contacts does the UA26-30-10-84 have?
The UA26-30-10-84 has three normally open main contacts and one built-in normally open auxiliary contact.
Do capacitors need to be discharged before the UA26-30-10-84 switches them again?
Yes. The capacitors must be discharged to a residual terminal voltage of no more than 50 V before being re-energised by the contactor.
Trusted Capacitor Switching from ABB
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.
