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1SBL411022R8811 ABB UA75-30-11 230–240 V AC 50 Hz Capacitor-Switching Contactor
ABB UA75-30-11 1SBL411022R8811 is a 3-pole capacitor-switching contactor with a 230–240 V AC 50 Hz / 240–260 V AC 60 Hz coil, 1 NO + 1 NC auxiliary contacts and a 50 kvar AC-6b rating at 400–415 V for industrial power-factor correction applications.
£349.33
Why Choose the ABB UA75-30-11 230–240V AC 50Hz Contactor?
The ABB UA75-30-11, order code 1SBL411022R8811, is a 3-pole capacitor-switching contactor engineered for switching capacitor banks in industrial power-factor correction systems. This exact version uses a 230–240 V AC control coil at 50 Hz and is also rated for 240–260 V AC at 60 Hz.
The UA75-30-11 combines 3 normally open main contacts with 1 NO + 1 NC built-in auxiliary contacts. It provides an AC-6b capacitor-switching rating of 50 kvar at 400–415 V and 40 °C, with ratings extending to 75 kvar at 690 V and 40 °C.
ABB UA contactors are specifically designed for capacitor banks whose inrush-current peaks are less than or equal to 100 times the nominal RMS current. The UA75-30-11 uses an AC-operated laminated magnet circuit and robust block-type construction, while its integrated auxiliary contacts provide convenient signalling, sequencing and interlocking functions in automatic capacitor-bank installations.
Key Advantages
- Purpose-designed for capacitor-bank switching.
- 230–240 V AC control voltage at 50 Hz.
- Also rated for 240–260 V AC at 60 Hz.
- 50 kvar AC-6b capacitor-switching rating at 400–415 V and 40 °C.
- Suitable for capacitor-bank inrush peaks up to 100 times nominal RMS current.
- 3 normally open main poles for three-phase capacitor banks.
- Integrated 1 NO + 1 NC auxiliary contacts.
- Robust ABB block-type construction with screw terminals.
Key Features
- ABB UA75-30-11 capacitor-switching contactor.
- 3-pole configuration.
- 3 NO main contacts.
- 1 NO + 1 NC built-in auxiliary contacts.
- 230–240 V AC at 50 Hz control circuit.
- 240–260 V AC at 60 Hz control circuit.
- AC-operated laminated magnet circuit.
- Main and auxiliary circuits rated for operation up to 690 V.
- Capacitors must be discharged to a maximum residual voltage of 50 V before re-energisation.
- Electrical durability of 100,000 operating cycles under ABB's specified capacitor-switching conditions.
Dedicated AC-6b Switching for Power-Factor Correction
Capacitor banks can generate substantial transient inrush currents when connected to an energised electrical network, requiring contactors specifically designed for capacitor-switching duty. The ABB UA75-30-11 is engineered for capacitor banks whose inrush-current peaks do not exceed 100 times nominal RMS current, providing dedicated AC-6b performance for automatic power-factor correction systems.
ABB specifies that the capacitors must be discharged to a maximum residual terminal voltage of 50 V before being re-energised when the contactor closes. Under these specified conditions, the UA75-30-11 provides an electrical durability of 100,000 operating cycles, supporting dependable repeated switching in industrial reactive-power compensation installations.
Typical Applications
- Automatic power-factor correction panels.
- Three-phase capacitor-bank switching.
- Industrial reactive-power compensation systems.
- Electrical distribution switchboards.
- Industrial plant power-factor correction.
- Commercial building capacitor banks.
- Power-quality improvement systems.
- Reactive-energy management installations.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Series | UA | |
| ABB order code | 1SBL411022R8811 | |
| Product type | Capacitor-switching contactor | |
| Number of poles | 3 | |
| Main contacts | 3 NO | |
| Built-in auxiliary contacts | 1 NO + 1 NC | |
| Rated control voltage at 50 Hz | 230–240 V AC | |
| Rated control voltage at 60 Hz | 240–260 V AC | |
| Control circuit | AC operated | |
| Magnet system | Laminated magnet circuit | |
| AC-6b rating at 230–240 V, 40 °C | 30 kvar | |
| AC-6b rating at 400–415 V, 40 °C | 50 kvar | |
| AC-6b rating at 440 V, 40 °C | 55 kvar | |
| AC-6b rating at 500–550 V, 40 °C | 62 kvar | |
| AC-6b rating at 690 V, 40 °C | 75 kvar | |
| Maximum capacitor-bank inrush peak | ≤100 × nominal RMS current | |
| Maximum residual capacitor voltage before re-energisation | 50 V | |
| Electrical durability under specified conditions | 100,000 operating cycles | |
| Rated operational voltage | 690 V | |
| Rated insulation voltage | 1000 V IEC / 600 V UL/CSA | |
| Rated impulse withstand voltage | 8 kV | |
| Auxiliary-contact conventional free-air thermal current | 16 A | |
| Terminal type | Screw terminals | |
| Dimensions (W × H × D) | 82 × 110 × 108 mm | |
| Net weight | approx. 1.2 kg | |
| EAN / GTIN | 3471522098887 | |
| Standards | IEC/EN 60947-1, IEC/EN 60947-4-1 |
Frequently Asked Questions
What is the ABB UA75-30-11 1SBL411022R8811?
The ABB UA75-30-11 is a 3-pole capacitor-switching contactor with three normally open main contacts, 1 NO + 1 NC built-in auxiliary contacts and an AC-operated laminated magnet circuit.
What coil voltage does the UA75-30-11 1SBL411022R8811 use?
This exact version is rated for 230–240 V AC at 50 Hz and 240–260 V AC at 60 Hz.
What capacitor-switching rating does the ABB UA75-30-11 provide?
At 400–415 V AC and 40 °C, the UA75-30-11 provides an AC-6b capacitor-switching rating of 50 kvar.
What capacitor-bank inrush current is the UA75-30-11 designed for?
The contactor is designed for capacitor banks whose inrush-current peaks are no more than 100 times nominal RMS current. Capacitors must be discharged to a maximum residual voltage of 50 V before re-energisation.
What is the ABB order code for the UA75-30-11 230–240 V AC 50 Hz contactor?
The ABB order code for this exact UA75-30-11 230–240 V AC 50 Hz contactor is 1SBL411022R8811.
ABB UA Capacitor-Switching Contactor Technology
ABB UA contactors combine dedicated AC-6b capacitor-switching performance, robust three-pole block construction and integrated auxiliary contacts for dependable industrial power-factor correction and reactive-power compensation systems.
