Medium Voltage JK Starters
The JK series Starter/ Controller Series has been expanded to meet our customers needs. The JK series is designed for use as a controller for transformers and capacitor switching, as well as an induction, wound rotor and synchronous motor starter. This design can be configured as individual controllers/starters or in control center lineups with incoming disconnect switches or in conjunction (bussed) with our HVK switchgear.

As a starter, the JK series is available in the following types:

Full Voltage Non-Reversing (FVNR)
Full Voltage Reversing (FVR)
Reduced Voltage Autotransformer (RVAT)
Solid State Starter (SSS)

The product line still incorporates the following features:

Isolation switch with visible disconnect, and includes: Safety interlock grounded in the open position, patented bolted pressure isolation switch connections, zero insertion pressure for increased life, and low resistance connection for decreased heat loss.
Separate medium and low voltage compartments
Toshiba vacuum contactors, 400A and 720A (U.S. manufactured)
Current limiting, high interrupting power fuses
CSA and UL listings**
JK400 Series includes: One or two-high design on FVNR or feeder design, no internal power cables and streamlined, space saving 30" wide design
**Consult factory for applicable models