Questions and Answers for Murray 100 Amp Type M1 Main Breaker Conversion Kit

A:  Please see below link for instructions. Note newer versions of LC2040L1125 ("Series A" marked on label) with reduced can size (21" versus 24") are not convertible to main breaker. https://s3.amazonaws.com/dcc-data-extract/new-delta/asset/Compas/daily/Compas/2019-03-07/Instruction%20Sheet%20Quick%20Guide/SIE_IS_100-123MainBreaker.pdf

A:  No, it cannot as the 100A and 200A mains are of different design. To convert to a 100A main breaker panel you would need to install a MP2100 in the 1 & 3 branch positions with the ECMBR2 main breaker retainer kit. If you refer to the wiring diagram on the inside door of the panel this arrangement will be shown in the top right corner. Note that you would lose two branch positions with this arrangement.

A:  Hi Bill, You would need to check the wiring diagram on your panel which should be on the inside of the door to make sure that it is rated to accept a 125 Amp main breaker. If it lists the MBK125M as the 125 Amp main breaker to use then you are good to go!

A:  This main breaker conversion kit is only UL listed to be used in Murray and Siemens panels, I would not recommend using in any other manufacturers panel.

A:  Hi Jim, Yes, you can use this 100 Amp main breaker kit in your 125 Amp Siemens panel.

A:  Hi Russ, The appropriate circuit breaker to use for this 225 Amp outdoor disconnect would be a Siemens type QPP (Model # Q2225B). Please contact our retail customer service if you have any other questions at 1-800-478-6346. Thank you.