Trapped Key Interlocks
Teksal Safety is the Australian distributor for Fortress, Castell and Ronis trapped key interlocking products, including keys, key operation and switch solutions.
Our high voltage and distribution safety products and services include:
- Trapped key interlocking systems – Fortress, Castell, Ronis, Kirk
- Integration of multiple brands
- Project management – globally coordinated solutions
FORTRESS AND CASTELL KEY INTERLOCKING

Trapped key interlocks are mechanical or electro-mechanical devices used to ensure the safe operation of plant and equipment.
Teksal Safety is a long-time distributor of Fortress Interlocks, offering years of experience with trapped key interlock applications and distribution interlocking project management.
Typical applications of trapped key interlocks include:
- Safe Isolation & Access Control – ensures isolations are complete before personnel can access machinery or equipment.
- Switchgear interlocking and HV switching – helps minimise switching and isolation risks in complicated distribution systems.

Project Management / Globally Coordinated Solutions
Teksal Safety offers a cost-effective solution for managing a project’s interlocking scope. This involves liaising with all relevant project stakeholders to ensure the interlocking sequence works the first time, regardless of where the project is designed and constructed.

Integration of Multiple Brands
Where possible, Teksal Safety coordinates and integrates solutions using multiple brands of interlocks on switch gear projects / large distribution systems, including Fortress, Castell, Ronis and Kirk.

Inquiries about Our Products
For more information about any of these products, call 1300 TEKSAL or email sales@teksal.com.au