Our products

Our interlock products are customized
to your unique safety needs

Type B Interlock

Isolation interlock

KIRK® Type B interlock is a key operated mechanical interlock that is suitable for the control of electrical switchgear. The standard unit comes with a stainless steel 5/8” diameter locking bolt with a throw or travel of 3/4”. The locking bolt is used to control the rotation or movement of operating handles or toggles of electrical switchgear. Many suppliers of switchgear equipment have mounting provisions available for KIRK® interlocks.

The Type B interlock is available in both SD and HD series.

For further technical information please refer to the datasheet.


  • Key actuated lock bolt
  • Single or multiple cylinders available
  • Protective covers available
  • Tamperproof mounting bolts optional
  • Available in SD (brass) or HD Series (316 stainless steel)



Electrostatic Precipitator

Global headquarters

9048 Meridian Circle NW                North Canton, OH 44720 USA

FAX (330)497-4400