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1SBL411022R8011 ABB UA75-30-11 220-230V 50Hz Contactor
ABB UA75-30-11 220–230 V 50 Hz 3-pole capacitor switching contactor with 1 NO + 1 NC built-in auxiliary contacts for industrial power factor correction and reactive power compensation systems.
£349.33
Why Choose the ABB UA75-30-11 220–230 V Contactor?
The ABB UA75-30-11, order code 1SBL411022R8011, is a specialised 3-pole capacitor switching contactor designed for power factor correction and reactive power compensation applications. As part of the ABB UA75 contactor series, it is engineered specifically for switching capacitor banks where high inrush current peaks occur during energisation.
The UA75-30-11 features three normally open main poles together with one normally open and one normally closed built-in auxiliary contact. It is suitable for capacitor banks whose inrush current peaks are less than or equal to 100 times the nominal RMS current, providing a purpose-designed switching solution for industrial capacitor control.
This 1SBL411022R8011 version is specified for a 220–230 V AC 50 Hz control supply. The contactor uses an AC-operated laminated magnet circuit and block-type construction, with screw terminals and support for a wide range of ABB accessories and additional auxiliary contact blocks.
Key Advantages
- Purpose-designed 3-pole contactor for capacitor bank switching.
- 220–230 V AC 50 Hz control voltage.
- Three normally open main poles for three-phase capacitor switching.
- Integrated 1 NO + 1 NC auxiliary contacts for signalling and control functions.
- Suitable for capacitor bank inrush peaks up to 100 times nominal RMS current.
- Designed for industrial power factor correction and reactive power compensation systems.
- Block-type construction can be expanded with compatible ABB auxiliary contacts and accessories.
- Robust ABB construction with screw terminal connections.
Key Features
- ABB UA75 capacitor contactor series.
- 3 normally open main poles.
- 1 NO + 1 NC built-in auxiliary contacts.
- 220–230 V AC 50 Hz control supply.
- AC-operated laminated magnet circuit.
- Designed for capacitor switching with inrush current peaks ≤100 times nominal RMS current.
- Capacitor residual voltage must be ≤50 V before re-energisation.
- 100,000 operating-cycle electrical durability under ABB's specified capacitor-switching conditions.
- Main circuit operational voltage up to 690 V AC.
- Block-type construction with screw terminals.
Reliable Capacitor Switching for Power Factor Correction
Capacitor banks can produce extremely high transient currents when connected to an electrical supply. The ABB UA75-30-11 is specifically designed for this duty and can switch capacitor banks with inrush current peaks of up to 100 times the nominal RMS current, subject to ABB's specified operating conditions.
For correct operation, capacitors must be discharged to a residual terminal voltage of no more than 50 V before being re-energised. Under the specified conditions, the UA75-30-11 provides an electrical durability of 100,000 operating cycles, making it suitable for automatic power factor correction and other repetitive capacitor-switching applications.
Typical Applications
- Automatic power factor correction panels.
- Three-phase capacitor bank switching.
- Reactive power compensation systems.
- Industrial electrical distribution equipment.
- Manufacturing and process plant power factor correction.
- Commercial and industrial capacitor control panels.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Series | UA75 Contactors | |
| ABB order code | 1SBL411022R8011 | |
| EAN | 3471522098801 | |
| Product type | 3-pole capacitor switching contactor | |
| Control supply voltage | 220–230 V AC, 50 Hz | |
| Number of main poles | 3 | |
| Main contacts | 3 NO | |
| Built-in auxiliary contacts | 1 NO + 1 NC | |
| Maximum capacitor switching inrush peak | ≤100 times nominal RMS current | |
| Maximum capacitor residual voltage before re-energisation | ≤50 V | |
| Electrical durability under specified capacitor-switching conditions | 100,000 operating cycles | |
| Main circuit rated operational voltage | up to 690 V AC | |
| Control circuit | AC operated with laminated magnet circuit | |
| Terminal type | Screw terminals | |
| Mounting | DIN rail / panel mounting | |
| Dimensions (H × W × D) | approx. 110 × 82 × 108 mm | |
| Weight | approx. 1.20 kg | |
| Standards | IEC 60947-4-1, IEC 60947-5-1 | |
| Product group | 311503 – Contactors A Small (Frctl) |
Frequently Asked Questions
What is the ABB UA75-30-11 used for?
The ABB UA75-30-11 is a 3-pole capacitor switching contactor designed for switching capacitor banks in power factor correction and reactive power compensation systems.
What control voltage does the UA75-30-11 1SBL411022R8011 require?
This version of the UA75-30-11 is specified for a 220–230 V AC 50 Hz control supply.
How many contacts does the ABB UA75-30-11 have?
The UA75-30-11 has three normally open main poles together with one normally open and one normally closed built-in auxiliary contact.
What capacitor inrush current can the UA75-30-11 handle?
The UA75-30-11 is designed for capacitor banks whose switching inrush current peaks are less than or equal to 100 times the nominal RMS current, subject to the specified operating conditions.
Must capacitors be discharged before the UA75-30-11 re-energises them?
Yes. The capacitors must be discharged to a maximum residual terminal voltage of 50 V before they are re-energised when the contactor closes.
Trusted ABB Capacitor Switching Technology
ABB UA contactors provide purpose-designed switching for industrial capacitor banks, combining robust three-pole construction, integrated auxiliary contacts and high inrush-current capability for dependable power factor correction applications.
