The above contactors are examples of contactor type automatic transfer switches.
A contactor type switch is purpose built rather than adapted using available technology like a breaker or lighting contractor switch.
The switch on the right is a good example of a contactor where you can see both stationary and movable contacts. This type of switch allows the technician to examine contacts for damage and keep them clear of deposits.
Breaker and lighting contactor switches do not allow for Fire code required inspection and maintenance.
For more information on transfer switches see my videos:
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.