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1SBL411025R4211 ABB GA75-10-11 230–240 V 50 Hz / 277 V 60 Hz DC Switching Contactor
ABB GA75-10-11 1SBL411025R4211 is an AC-operated contactor for DC circuit switching with a 230–240 V 50 Hz / 277 V 60 Hz control coil, one NO main pole, 1 NO + 1 NC auxiliary contacts and DC-1, DC-3 and DC-5 ratings for industrial direct-current loads.
£306.01
Why Choose the ABB GA75-10-11 230–240V 50Hz / 277V 60Hz Contactor?
The ABB GA75-10-11, order code 1SBL411025R4211, is an AC-operated contactor designed for switching DC power circuits. This exact version uses a 230–240 V AC control coil at 50 Hz and 277 V AC at 60 Hz, providing a specialised switching solution for industrial DC loads.
The GA75-10-11 features a 1-pole main contact arrangement together with 1 NO + 1 NC built-in auxiliary contacts. The GA75 family is designed specifically for DC circuit switching and provides rated operational currents of up to 100 A in DC-1, 85 A in DC-3 and 50 A in DC-5 at 440 V DC.
Unlike conventional three-phase motor contactors, the ABB GA series is optimised for controlling direct-current loads. Its dedicated DC switching capability, AC-operated control circuit and integrated auxiliary contacts make the GA75-10-11 well suited to industrial DC distribution, resistive loads, DC motors and other applications requiring dependable interruption of direct current.
Key Advantages
- Specially designed for DC power-circuit switching.
- 230–240 V AC control voltage at 50 Hz.
- 277 V AC control voltage at 60 Hz.
- Rated up to 100 A DC-1 at 440 V DC.
- Rated up to 85 A DC-3 at 440 V DC.
- Rated up to 50 A DC-5 at 440 V DC.
- Integrated 1 NO + 1 NC auxiliary contacts for control and signalling.
- ABB block-type construction for dependable industrial switching.
Key Features
- ABB GA75-10-11 DC switching contactor.
- 1-pole main switching configuration.
- 1 NO main contact.
- 1 NO + 1 NC built-in auxiliary contacts.
- 230–240 V AC at 50 Hz control voltage.
- 277 V AC at 60 Hz control voltage.
- AC-operated coil.
- Purpose-designed for direct-current loads.
- Suitable for DC-1, DC-3 and DC-5 utilisation categories.
- Compatible with ABB contactor accessories for expanded control functionality.
Dedicated Contactor Technology for DC Circuit Switching
Switching direct current places different demands on a contactor than switching alternating current because a DC circuit has no natural current zero crossing to assist arc extinction. ABB GA contactors are specifically designed for this duty, allowing the GA75-10-11 to provide defined switching performance for resistive and inductive DC loads rather than relying on a conventional AC motor contactor.
At 440 V DC, the GA75 platform provides ratings of 100 A in DC-1, 85 A in DC-3 and 50 A in DC-5. These utilisation categories cover applications ranging from substantially non-inductive DC loads to shunt and series DC motor switching, making the contactor suitable for a broad range of industrial direct-current systems.
Typical Applications
- Industrial DC power-circuit switching.
- DC motor control.
- DC distribution systems.
- Resistive DC loads.
- Inductive DC loads.
- Battery-powered industrial equipment.
- Industrial machinery with DC power circuits.
- Control panels requiring high-current DC switching.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Series | GA | |
| ABB order code | 1SBL411025R4211 | |
| Product type | Contactor for DC circuit switching | |
| Control circuit | AC operated | |
| Number of main poles | 1 | |
| Main contacts | 1 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 | 277 V AC | |
| Rated operational current DC-1 at 440 V DC | 100 A | |
| Rated operational current DC-3 at 440 V DC | 85 A | |
| Rated operational current DC-5 at 440 V DC | 50 A | |
| Application | DC load switching | |
| Utilisation categories | DC-1, DC-3, DC-5 | |
| Terminal type | Screw terminals | |
| Mounting | DIN rail or screw mounting |
Frequently Asked Questions
What is the ABB GA75-10-11 1SBL411025R4211?
The ABB GA75-10-11 is an AC-operated contactor designed for switching DC circuits, featuring one normally open main pole and 1 NO + 1 NC built-in auxiliary contacts.
What control voltage does the GA75-10-11 1SBL411025R4211 use?
This exact version uses a control voltage of 230–240 V AC at 50 Hz and 277 V AC at 60 Hz.
What is the DC-1 rating of the ABB GA75-10-11?
The GA75 family provides a rated operational current of up to 100 A in DC-1 at 440 V DC.
Is the ABB GA75-10-11 suitable for DC motor switching?
Yes. The GA75 is specifically designed for DC circuit switching and provides ratings for DC-3 and DC-5 utilisation categories, including up to 85 A DC-3 and 50 A DC-5 at 440 V DC.
What is the ABB order code for the GA75-10-11 230–240 V 50 Hz / 277 V 60 Hz contactor?
The ABB order code for this exact GA75-10-11 contactor is 1SBL411025R4211.
ABB GA Contactor Technology for DC Power Circuits
ABB GA contactors provide dedicated DC-1, DC-3 and DC-5 switching performance, AC-operated control and integrated auxiliary contacts for dependable control of demanding industrial direct-current loads.
