Be prepared and safe with an Interlock kit for your existing panel
SIEMENS Interlocks

Siemens ECSBPK06
Siemens or Murray panels the Main breaker is QN or MD-T typeStandby power breaker must be a QP or MP-T double pole breaker
Siemens load centers and meter combinations
Siemens Ecsbpk05 Generator Standby Power Mechanical Interlock

Siemens ECSBPK02
Main breaker is double pole QP breaker 15-125 Amp Standby power breaker is a QP or MP type
Siemens Main breaker is double pole QP breaker 15-125 Amp Standby power breaker is a QP or MP type
TB-200A Thomas and Betts, Challenger and Westinghouse Generator Interlock Kit 150 or 200 amp panels