In stock items ship same day if ordered online before 12 EST

In stock items ship same day if ordered online before 12 EST

Interlock Kit K-4010


78 in stock

You need extra 150 Points for getting this product for free

Have a question or don’t see a kit for your panel? We make custom Interlock Kits for any panel or solar scenario – call (804) 531-3359 or Contact Us!

This Interlock Kit mounts to Siemens / ITE / Murray electrical panels and requires:

  • Space between breaker columns: 1/2"
  • Gap between main breaker and columns below, is: 1 1/4- 1 1/2"
  • 150-200 amp main breaker
  • Main breaker toggle action: horizontal (left-right) throw direction ON & OFF
  • Main breaker offset from the center: 7/8 to the left


  • Install a generator breaker at the top of the right column: spaces 2 & 4 (top two spaces in the right column)
  • Page four of the installation instructions includes a list of contents included in Kit K-4010

Modified versions on this Interlock Kit exist: K-4015 for NEW Siemens plug on neutral panels

Kit Installation Instructions

Additional information

Weight 1 lbs
Catalog #

LC4040B1200, LC4040B1200CU, LC3040B1150, P4040L1200, P4040L1200CU, P4040L1200CUW, G3040B1200 – other compatible catalog #'s may not be listed here yet. Use the details listed in "Description" to help match your kit!