Hookstick Switch – HS17750

Robust & Reliable

The HS17750 isa simple, robust and very reliable station class hookstick switch.

All parts are machined from solid billet materials, such as 304 stainless steel and hard drawn copper.


Technical features

  • High strength aluminum or galvanized steel base frame;
  • Hardware on live parts are made of non-magnetic materials (mainly stainless steel);
  • Current-carrying parts are made of high-conductivity copper;
  • Contacts are made of silver plated hard drawn copper;
  • Contact pressure  is provided  through multiple spring loaded fingers.

Cut view of latch

  • Heavy-duty latch spring protected from ice buildup with the terminal pad when closed.

Optional auxiliary contacts

  • The EMSPEC hookstick switch can be fitted with four (4) auxiliary contacts for use in indoor substations or industrial environment.

Vee-type frame

  • Vee-type frames are optional. Please consult factory.

Hookstick Switch – HS17750

Dimensions & Technical Data

  • Dimensions  based on ANSI TR insulators.
BIL (kV)110150200250350550
B7818821 1361 3351 8362 710
C3314335346368411 247
D7447449001 0001 2731 758
In (A)Up to 2 000Up to 2 000Up to 2 000Up to 2 000Up to 2 000Up to 2 000
Icc (kA peak)Up to 82Up to 82Up to 82Up to 82Up to 82Up to 82

For other ratings consult factory

  • Silicone or polymer insulators
  • Auxiliary contacts
  • Vee-type frame

This brochure provides a brief introduction. EMSPEC reserves the right to make changes at any time, without notice.

Start typing and press Enter to search