Breaker Type Switch

Circuit Breaker Type Automatic Transfer Switches

The above contactors are examples of breaker type automatic transfer switches.

A circuit breaker type transfer switch is adapted using available technology like a circuit breaker or lighting contactor rather than purpose built for its intended use.

Breaker switches use two circuit breakers to switch the load. One for utility and one for emergency power.

The breakers are interlocked so that they both cannot close together. Cannot be serviced properly because you cannot access the contacts. NFPA 110, 2010 edition, 8.3.5 (4)

Damaged contacts cannot be replaced.

Breaker and lighting contactor switches do not allow for Fire code required inspection and maintenance.

They are not field accessible. These devices must be removed and sent to the manufacturer for service.

Click on this link for an excellent article on breaker switches.

For more information on transfer switches see my videos:

What is an Automatic Transfer Switch

Automatic Transfer Switch Annual Service

Automatic Transfer Switch Sequence of Operation

Our Legal Disclaimer:

All information expressed by Standby Power Solutions, LLC or its officers is strictly the opinion of Standby Power Solutions, LLC.
Standby Power Solutions, LLC disclaims any liability for any personal injury, property, or other damages of any nature whatsoever, whether special, indirect, consequential, or compensatory directly or indirectly resulting from the publication, use of, or reliance on this website or any information derived thereof. Standby Power Solutions, LLC also makes no guaranty or warranty as to the accuracy or completeness of any information contained herein. Anyone using this website should rely on his or her own independent judgment, or as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances. ©2021 by Standby Power Solutions, LLC. All rights reserved. Do not reproduce without express written permission.