For a simple yet effective and reliable machine guard safety system, use the Prosafe SALE series key transfer metal interlock by Allen Bradley Guardmaster.

This robust stainless-steel device provides increased stability and security for machine guard doors and improves safety for personnel, ensuring that access to hazardous areas is restricted until the correct key is inserted into the interlock. The key must be turned 90° to trap it. This trapped key mechanism is actuated by a lever. As it is entirely mechanical, it eliminates the need for electrical wiring and can withstand harsh industrial environments.

• Ideal for securing doors, ducts and housings where an operator's whole body may enter
• Front and rear high security installation
• Direct control mechanism
• New range of key interlocking systems: the new keys are compatible with the old barrels, although they have an additional notch (old keys will not fit the new barrels)
• Durable 3161L stainless-steel housing ensures exceptional longevity
• Anti-tamper screws

Key must be ordered separately.

The Prosafe range of products have been extensively tested for quality and durability, working seamlessly for 100,000 operations. They are also highly tamper-resistant, accepting only the original or equivalent new key for operation. Allen Bradley Guardmaster have one of the broadest portfolios in the industry for machine safety products, which ensures that you can create your ideal safety system and keep your operations running smoothly.

EN 292 and EN 1088

The 440T-MSALE100B Safety Access Interlock Switch is single key with a lever actuator, and connection type M5. The key must be trapped to release the lever.

A trapped key interlock system is a safety system which is used to keep machine guards or gates securely locked in order to prevent unsafe access to dangerous areas where machinery may be in motion, which could cause serious injury to operators. Trapped key interlocks are ideal for applications with enforced sequential interlocking. They ensure that machinery cannot run while the key is being used to open the guard door. They are widely utilised in industrial applications, such as safeguarding factory production lines.

Trapped Key Switch