Mains switch box for KOSTAL PLENTICORE G3

enwitec now provides you with a solution that is officially approved and listed by KOSTAL for all PLENTICORE G3 variants.

  • Simple installation
  • Flexibly expandable
  • All-pole or three-pole mains disconnection initially configurable
  • Retrofitting of KOSTAL energy meters possible


In the event of a grid failure, the grid switching box safely disconnects the connected PV system and the load distribution from the public grid and simultaneously provides the customer with a backup power supply. The ready-to-connect and pre-tested solution from enwitec eliminates the need for installers to construct the switchover device themselves, which is time-consuming and cost-intensive, as well as taking on their own warranty obligations

PRODUCT FEATURES AT A GLANCE:

1) Installation of the KOSTAL energy meter (KSEM, KEM-C, KEM-P) optionally possible.

2) When connecting the PLENTICORE G3 in the mains switch box and external fuse protection devices (residual current circuit breaker and/or miniature circuit breaker are available on site) > Connection to X4.

When connecting the PLENTICORE G3 in the mains switch box and internal fuse protection: The placeholder terminals in front of X4 are removed on site and residual current circuit breakers and/or miniature circuit breakers are installed; 7 sub-units (1 HP = 17.8 mm) are available. Recommendation: In the TT network (all-pole disconnection), install a 300 mA residual current circuit breaker to comply with the “automatic power supply disconnection” protective measure. For the rated currents of the miniature circuit breakers, please refer to the KOSTAL recommendations for the PLENTICORE G3 power classes.

3PH_KOSTAL_BBD3(A)P_63A_DE-CH 3PH_KOSTAL_BBD3(A)P_63A_FRT_AUT
Country release Germany, Switzerland Austria
Mains disconnection All-pole or three-pole disconnection All-pole or three-pole disconnection
Permitted mains forms Mains connection TN-C/TN-S/TT TN-C/TN-S/TT*
Permitted network types Consumer system TN-S/TT (no TN-C!) TN-S/TT* (no TN-C!)
Control and monitoring KOSTAL energy meter (KSEM, KEM-C or KEM-P) can be integrated as required KOSTAL energy meter (KSEM, KEM-C or KEM-P) can be integrated as an option
Rated voltage Ue 3PH – 230/400 V 3PH – 230/400 V
Maximum grid-side insured value 63 A 63 A
Article no. 10017468 10017469
Download: Installation instructions Data sheet Data sheet
*In coordination with the network operator

You can obtain the mains switchover boxes here