For over 15 years, KLS Locks has been designing and manufacturing trapped key interlock systems that protect people, equipment, and processes. We provide robust, tailored mechanical interlock solutions that enforce safe operating sequences and prevent dangerous human error.
Trapped key interlocks designed for wind, solar, and BESS. They ensure safe access, reliable isolation, and consistent protection
Custom trapped key interlock systems for machinery and process lines - safer sequences, less downtime, and smooth maintenance across diverse industries.
Years of Excellence
KLS Locks designs and manufactures mechanical trapped key interlock systems that keep operations safe and in the correct sequence. Our solutions ensure that equipment can only be accessed or operated when conditions are truly safe.
We create interlock schemes tailored to your machinery and processes, from access doors and switchgear to valves and complex lines. Every system is built around your needs, backed by more than 15 years of experience.
What we offer:
• Custom design and engineering
• Manufacturing of mechanical interlock components
• Support with integration into your equipment
• Compliance with international safety standards
Trusted by companies worldwide for safe and reliable equipment access
Discover our range of high-performance interlock systems, built to last and customized for your safety requirements.
We provide a comprehensive range of trapped key interlock components that can be integrated into a fully engineered safety system. Our solutions ensure that hazardous operations are performed only in a safe and strictly defined sequence, guaranteeing compliance and operational security.
Designed for the mechanical securing of electrical switchgear like circuit breakers, disconnectors, inverters, and earthing switches. The core mechanism utilizes a cam attached to the rear of the lock, which directly blocks or permits the movement of the equipment drive.
A robust locking device specifically designed to secure the operating handles and controls of circuit breakers, switches, and disconnectors, ensuring they remain in a predetermined safe position (e.g., isolated). They are essential for controlling the rotary or linear actuation of an operator.
The fundamental trapped key solution engineered to secure physical access points, including industrial doors, hatches, gates, and protective covers. They are also ideally suited for locking plug-in connectors on power transformers.
Designed to facilitate the release of multiple secondary keys (typically for access points) by successfully trapping one or more primary isolation keys. This is presented as a robust box format, available with multiple key cylinders.
These are our standard mechanical interlocks enhanced with electrical components for superior control, functionality, and system feedback. The inclusion of a solenoid allows for electrical authorization or prevention of key rotation/withdrawal.
Specialized mechanical interlocks designed to be fitted directly onto manually operated valves, including ball, gate, and globe valves. They prevent the unauthorized or incorrect operation (turning) of the valve handle until the correct sequence key is inserted.
We don’t just supply products – we deliver certainty. We are committed to providing best-in-class engineered interlock solutions, ensuring swift responsiveness and uncompromising quality in every single component we offer.
Our mission is risk elimination. We translate expertise into uncompromising interlock solutions. Every component is manufactured to perfect tolerances and integrated with proven engineering principles to ensure hazardous operations follow a strict, safe sequence. This is the operational certainty you can rely on.
We design tailored trapped-key systems that fit your facility - not just components, but complete engineered safety solutions.
Durable, certified, and fail-safe interlocks designed for zero errors and maximum reliability.
Quick response, reduced lead times, and hands-on technical assistance when you need it.
We specialize exclusively in trapped-key interlocks—deep knowledge, proven safety.
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We are your specialized partner in industrial safety. Our deep expertise ensures your interlock system is designed for absolute reliability, exceeding every quality and safety expectation.
Every action we take is focused on eliminating operational errors. We align our manufacturing and engineering goals directly with your critical safety protocols to ensure optimized, fail-safe outcomes at your facility.
Trust is built on consistent, flawless execution. We implement rigorous quality control and validated engineering processes to ensure every interlock delivers absolute long-term dependability in the most demanding industrial environments.
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KLS is a global leader in key interlock. Our range of security interlocks is suitable for a wide range of industrial applications, as: power generation, extractive industry, construction materials, railways industry, harbors and naval infrastructures, airports and metro station infrastructures, automotive, food industry, wood and paper industry. The key interlocking systems utilize locks and keys for sequential control of equipment and machinery to ensure safe operation.
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