ABB mkey5+z Safety Interlock Switch, 2NC/1NO

Why Choose the ABB MKey5+Z Safety Interlock Switch?

The ABB MKey5+Z 2TLA050003R0121 is a robust mechanical safety interlock switch designed for monitoring machine guards, doors and hatches in industrial safety systems. Part of the ABB Jokab Safety MKey series, this full stainless steel version provides dependable guard position monitoring in machinery and environments where durability, corrosion resistance and high ingress protection are important.

The MKey5+Z features a 316 stainless steel body and head together with a stainless steel actuator, making it particularly suitable for demanding industrial installations. It provides a 40 N holding force and a 2NC/1NO contact arrangement with direct-opening normally closed safety contacts, enabling reliable integration into machine safety circuits.

With IP67 and IP69K enclosure protection, three M20 conduit entries and an operating temperature range of -25 to +80 °C, the MKey5+Z is engineered for reliable service in challenging applications. A standard actuator key is supplied, while the compact switch body measures approximately 98 × 58 × 34 mm for convenient installation around machine guarding.

Key Advantages

• Robust mechanical safety interlock switch for machine guard monitoring.
• Full 316 stainless steel construction for excellent durability and corrosion resistance.
• 40 N holding force helps retain the actuator during normal machine operation.
• 2NC/1NO contact configuration supports safety and status monitoring.
• IP67 and IP69K protection for demanding industrial environments.
• Three M20 conduit entries provide flexible cable installation.
• Supplied with a standard stainless steel actuator key.

Key Features

• ABB Jokab Safety MKey series.
• MKey5+Z full stainless steel safety interlock switch.
• 2NC/1NO contacts with direct-opening NC contacts.
• 40 N actuator holding force.
• 316 stainless steel body and head.
• Stainless steel actuator.
• IP67 / IP69K enclosure protection.
• Three M20 conduit entries.
• 10 A thermal current.
• Mechanical life of approximately 1 million switching operations.
• Maximum actuator approach/withdrawal speed of 600 mm/s.
• Suitable for mounting in any position.

Reliable Guard Monitoring for Demanding Industrial Machinery

Mechanical safety interlock switches such as the ABB MKey5+Z are used to detect the position of movable guards, doors and access hatches. The switch body is mounted to the fixed machine structure and the actuator to the movable guard; opening the guard withdraws the actuator and changes the safety contact state so the connected safety control system can initiate the required machine safety response.

The MKey5+Z is especially suited to applications requiring a rugged stainless steel switch. Its 316 stainless steel construction, IP67/IP69K ingress protection, direct-opening safety contacts and wide operating temperature range provide a durable solution for machine builders and industrial automation engineers working in demanding production environments.

Typical Applications

• Industrial machine guard monitoring.
• Safety doors, gates and access hatches.
• Food and beverage processing machinery.
• Washdown and demanding production environments.
• Packaging and processing equipment.
• Conveyor and material handling systems.
• Automated manufacturing and robotic cells.
• OEM machinery and industrial safety systems.