Automatic transfer switches

Automatic switching between power sources

ABB offers automatic transfer switches (ATS), from 40 to 1600 Amperes in range. They have the features and functionality that makes them suitable for diverse applications: industrial plants, docks, airports and data centers.

Highlights

White paper: System plus system (2N) electrical distribution Data Center Design (IEC)

Download the white paper to learn how to reduce design time of a IEC 0.5 MW IT load Data Center, with high efficiency and maximum service continuity.

White paper: Energy efficiency and management in Data Center

Download the white paper and find how to increase energy efficiency in your data center.

Life cycle management

Update for 2021/12

11/04/2021

Compact ATS - Modbus communication available

Modbus RTU communication is now available for Compact ATS adjustable versions. With Compact ATS, you are ready for connectivity now and in the future.

01/25/2021

ABB takes energy performance to new heights in Swansea for a new era of student accommodation

Press release

09/22/2020

TruONE ATS sharpens competitive edge for generator set manufacturer Zahid Industries

Web story

08/14/2020

ABB Electrification wins four prizes at CAIMRS 2020

ABB's Integrated, Predictive Analytics-Capable TruONE ATS Wins Frost & Sullivan Innovation Award

03/25/2020

Let our transfer switches carry the load

03/25/2020

Smart solutions for metering and monitoring

03/25/2020

New Zenith ATS combines ABB and GE Industrial Solutions technology to take performance to new heights

03/25/2020

TruONE ATS: Simplicity vs. Complexity

12/12/2017

ABB launches TruONE™, the world’s first true ATS for critical power

Press release

The ABB TruONE™ automatic transfer switch has built-in sensors, controllers and connectivity.

Our offering

Compact ATS

Compact without compromise

40...125 Amperes

TruONE ATS

The world's first true ATS

200...1600 A

Zenith T-series ATS

Enclosed UL/NEMA ATS

Tools and Support

Catalogues

Configurator

Main catalogue - Change-over, bypass and transfer switches
Technical data, ordering information and dimension drawings of the entire range of manual and motorized change-over, transfer and bypass switches.

TruONE ATS
Technical data, ordering information and dimension drawings

Frequently asked questions

1. The motorized change-over stops operating after few operations.
Check that you are supplying the motor operator with correct voltage level and that control circuit connections are voltage free.

2. Motor operator does not react to control command.
Check that the fuse of the motor operator (at the bottom of the switch) is ok, that the handle is not mounted, that no padloks are installed and that the Auto/ Manual toggle is in AUTO mode.

3. The auxilary contacts do not connect when the switch poles are moving.
Check that auxiliary contacts are installed on the right side of the motorized change-over switch. They will not work if they are on the left side.

4. How can I mount the motorized change-over switch on the panel?
On table mount, horizontally and vertically. For motorized change-over switches, ceiling mount is not recommended.

5. Can I use ABB motorized change-over switches in environments with temperatures higher than 40 degrees?
Yes but deranting factors needs to be checked. Notice that motor operator operating temperature limit is 55°C, which becomes often the limitation.

6. Where can I get spare fuses for the motorized change-over switches?
ABB factory does not provide spare fuses. You can use any brand that meets the requirements specified in the catalog.

7. I have ordered an OMD controller as a spare part and after doing the connection correctly the product does not work as it should.
Check the operating mode of the OMD controller. Select Motorized OTM_C option when connecting separate OMD controller and OTM motorized change-over switch.

8. Can the OMD200 controller be used in a 3 phase system?
The OMD200 controller does not work without neutral line. This means that you need to get the neutral reference from a separate place or use a transformer.

9. Can the OMD300 controller be used in 3 phase system?
The OMD300 controller does not work without neutral line. This means that you need to get it from a separate place and select the option "Neutral in use" from the OMD controller. If this is not done, the power source to motor does not work.

10. OMD controller shows an alarm. What do I need to do?
First, you need to detect what the reason for the alarm is and shut it off - to check how to do it, refer to the user manual. After the alarm has been shut off, the controller is in manual mode and you need to push AUTO button once.

11. What are recommended accessories when ordering OTM40…125 + OMD controller as two separate components?
We recommend to order a controller, a motorized change-over switch and 3 sets of OZXT6 terminal clamp sets.

12. What are recommended accessories when ordering OTM160…3200 + OMD controller as two separate components?
We recommend to a controller, a motorized change-over switch, one set of OMZB_ voltage sensing connectors and 2 pieces of OA1G10 auxiliary contacts. For specific item types, refer to the technical catalog 1SCC303003C0201.

13. Are two pole change-over switches available?
For most of the switch products, ABB offers special two pole models.

14. Is it possible to use ABB change-over switches for DC applications?
Yes, ABB change-over switches can be used in DC application but notice that the electrical performance in DC is very different than in AC. To see the DC technical data, refer to the technical catalog 1SCC303003C0201.

15. The product locking information output feature in the OTM does not work.
The locking infromation output feature in the OTM does not work if the motor operarator is not supplied.

16. The Automatic Transfer Switch does not change its position even if both networks are available.
Check that the fuse of the motor operator (at the bottom of the switch) is ok, that the OMD controller does not show any alarms and that the switch has a power supply.

17. In motorized change-over switches from 40 to 125 Amperes (OTM40….125): How does the connection terminal with the mark "this terminal is for OMD connection" works?
That terminal can be used only when connecting ABB OMD controllers to the motorized change-over switch. When using another type controllers, connection (C-II-I-0) must be used.

18. Can I use an external handle and shaft with a motorized change-over switch or automatic transfer switch?
No. It is only allowed to use the direct mount handle (emergency handle) to operate switch manually.

19. What is the transfer time of the Automatic Transfer Switches?
The OFF time range is of 0,4 - 1,5 seconds. The total transfer time range is 2 -6 seconds. To find product specific operating times, refer to the user manual.

20. I have ordered a pre-wired ATS solution with voltage sensing on top. Can I change the voltage sensing cables to bottom?
No. The voltage sensing cables are installed inside switch body and cannot be removed or changed. The only possibility is to do completely new wiring.

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Related products

Manual operated change-over switches

Motor operated change-over switches

Manual operated bypass switches

Motor operated bypass switches

Contactors and overload relays

Emax 2

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Automatic transfer switches

Automatic switching between power sources

Are you looking for support or purchase information?

Highlights

White paper: System plus system (2N) electrical distribution Data Center Design (IEC)

White paper: Energy efficiency and management in Data Center

Life cycle management

Compact ATS - Modbus communication available

ABB takes energy performance to new heights in Swansea for a new era of student accommodation

TruONE ATS sharpens competitive edge for generator set manufacturer Zahid Industries

ABB Electrification wins four prizes at CAIMRS 2020

ABB's Integrated, Predictive Analytics-Capable TruONE ATS Wins Frost & Sullivan Innovation Award

Let our transfer switches carry the load

Smart solutions for metering and monitoring

New Zenith ATS combines ABB and GE Industrial Solutions technology to take performance to new heights

TruONE ATS: Simplicity vs. Complexity

ABB launches TruONE™, the world’s first true ATS for critical power

Our offering

Tools and Support

Catalogues

Frequently asked questions

Related products

abb.com privacy settings