Rated 3.4 out of 5 by 8
Rated 5.0 out of 5.0 by MWB WORKS WELL
I used this with the Siemens P1624L1125CU load center to make a 12 circuit generator sub-panel. The interlock breakers I used were 70 Amp (Q270) for the utility feed and 30 Amp (Q230) for the generator feed. The retainer ring fits very tight around these breakers. I used a large straight blade screwdriver to press it into place. This is best done with the bus assembly removed from the box and placed on a flat surface. When installed properly, either breaker works normally but you can not have both breakers in the ON position at the same time. This means you can have utility feed or generator feed but not both. When used this way, no connection is made to the lugs on the bus bars. All power is "back fed" through the interlock breakers. A connection is still made in the usual manner from the neutral bus in main panel to the neutral bus in the generator sub-panel. The neutral bus is not grounded at the sub-panel.
December 21, 2015
Rated 5.0 out of 5.0 by Bub works fine
Used this product only once but had no problems. Fits tight on breakers when installed correctly. Do not believe product is designed to be used as operating device. Not sure. With product installed, still had to operate breakers individually but product still would not allow both breakers to be on or off at the same time. Looking for more of them but lost my Siemens distributor. Bought out by Cutler / Hammer. BUMMER.
December 1, 2015
Rated 5.0 out of 5.0 by SmoothPilot Safe and simple
I had a job that required changing out at least the bus bar in an older Sylvania service panel. We wanted to have the ability to hook up a portable generator to the system. After reviewing several options for cost, code and UL compliance it was determined that total replacement of the service panel was the best approach. A Siemens G3042B1200GEN panel with the subject interlock kit was chosen. This combination allows for manual transfer only. Alternate parts are required for automatic power transfer.
This interlock kit has two parts. The first is a stamped steel hoop that locks one of the bus-tie circuit breakers to the generator back-feed circuit breaker. The second part interconnects the circuit breaker switch handles so that only one of the breaker can be closed at one time. The installation of the back-feed breaker and this kit only took about five minutes. The parts fit perfectly. The function was exactly as expected. The only reason for only giving an 'average' rating on value is that these parts would cost less that $1 to make. Compared to the other options available though, this kit is inexpensive.
May 15, 2012
Rated 5.0 out of 5.0 by pwssr Works perfectly!
Installed without issue - fit is perfect! The piece that joins the two switches goes on tight, but that is what you want!
October 9, 2013
Rated 4.0 out of 5.0 by Electrician Worked fine
Followed the directions and use in listed panels and it worked fine.
March 9, 2013
Rated 1.0 out of 5.0 by MIKE WILL NOT FIT!!!
IT WOULD HAVE BEEN A NICE AND CHEAP INTERLOCK KIT...BUT IT DOES NOT FIT
SPACING BETWEEN BRAKERS IS TO SMALL AND IT WILL NOT LET THE BRAKERS ENGAGE FULLY...
March 5, 2012
Rated 1.0 out of 5.0 by jason too tight, will not work for you!!!
too tight will not work for you, do not waste your time...
September 21, 2012
Rated 1.0 out of 5.0 by Rich This item does not fit
Does not fit in the electrical panel...The item is being reviewed by the manufacturer
October 9, 2012