Why Choose the ABB MKey5+ Safety Interlock Switch?
The ABB MKey5+, part number 2TLA050003R0101, is a robust mechanical safety interlock switch designed for monitoring doors, hatches and movable guards on industrial machinery. Featuring a plastic body and head, a 2NC + 1NO contact configuration with the actuator inserted and a 40 N holding force, it provides dependable guard position monitoring as part of a machine safety system.
As part of the ABB Jokab Safety MKey series, the MKey5+ uses a separate actuator key mounted on the moving part of the guard while the switch body is mounted to the fixed frame. Opening the guard withdraws the actuator and changes the positively operated safety contacts, allowing the associated safety control system to detect the open guard condition and initiate the required machine stop.
The 2TLA050003R0101 features IP67 enclosure protection, three M20 conduit entries and is supplied with a standard actuator key. Its compact 58 × 98 × 34 mm construction, durable polyester/plastic housing and operating temperature range of -25 to +80 °C make it suitable for a broad range of industrial machine guarding applications.
Key Advantages
- Mechanical safety interlock switch for monitoring guards, doors and hatches.
- 2NC + 1NO contacts with direct opening action on the NC safety contacts.
- 40 N holding force helps retain the actuator during normal operation.
- IP67 protection for demanding industrial environments.
- Three M20 conduit entries provide flexible cable installation options.
- Supplied with a standard actuator key for straightforward installation.
Key Features
- ABB Jokab Safety MKey5+ mechanical safety switch.
- 2NC + 1NO contact configuration with actuator key inserted.
- NC safety contacts feature direct opening action.
- 40 N actuator holding force.
- IP67 enclosure protection.
- Three M20 conduit entries.
- Maximum actuator approach/withdrawal speed of 600 mm/s.
- Mechanical life of approximately 1 million operations.
Reliable Mechanical Guard Monitoring for Industrial Machinery
Mechanical safety interlock switches such as the ABB MKey5+ are used to detect the position of movable machine guards. The switch is normally mounted on the fixed frame and its actuator key on the movable guard, so opening the guard withdraws the key and mechanically changes the safety contacts for detection by the machine safety control system.
The MKey5+ combines positively operated NC contacts with a rugged IP67 enclosure and 40 N actuator holding force. This makes it suitable for guarding arrangements on production machinery, conveyors, automated equipment and other installations where reliable detection of guard position is required.
Typical Applications
- Machine guard doors and access panels.
- Safety hatches on industrial equipment.
- Automated production machinery.
- Conveyor and material handling systems.
- Robot cell access guarding.
- OEM machinery and industrial automation systems.
