ABB mkey9m 24vdc Safety Interlock Switch

Why Choose the ABB MKey9M 24VDC 2TLA050009R0112 Safety Interlock Switch?

The ABB MKey9M 24VDC Safety Interlock Switch 2TLA050009R0112 is a robust electromagnetic guard-locking interlock switch designed for industrial machine guarding applications. Part of the ABB Jokab Safety MKey range, the MKey9M uses a 24 V DC power-to-lock mechanism, making it particularly suitable as a process lock where a machine guard needs to remain mechanically secured while the solenoid is energised.

The MKey9M combines a rugged polyester housing with a 316 stainless steel head and provides a substantial 1800 N holding force. Its rotatable head offers eight actuator entry positions, providing installation flexibility for hinged, sliding and removable guards. This exact 2TLA050009R0112 version has 1 × M20 conduit entry and is supplied with a standard stainless steel actuator key.

With IP67 enclosure protection, positive-opening safety contacts and a 24 V DC electromagnetic locking system, the MKey9M is designed for dependable industrial service. When correctly incorporated into an appropriate machine safety architecture, the MKey9M can support safety functions up to PL e / Category 4 according to EN ISO 13849-1 and SIL 3 according to EN 62061.

Key Advantages

• 24 V DC power-to-lock operation for process guard locking applications.
• High 1800 N holding force for secure mechanical guard retention.
• Rugged polyester body with 316 stainless steel head.
• Rotatable head provides eight actuator entry positions for flexible installation.
• Standard stainless steel actuator key included.
• IP67 protection for demanding industrial machine environments.
• Supports safety architectures up to PL e / Category 4 and SIL 3.

Key Features

• ABB MKey9M electromagnetic guard-locking interlock switch.
• Power-to-lock operating principle.
• 24 V DC solenoid voltage.
• 1800 N guard holding force.
• Guard locking contacts: 2 NC + 1 NO.
• Actuator monitoring contacts: 2 NC + 1 NO.
• 1 × M20 conduit entry.
• IP67 degree of protection.
• Rotatable head with 8 actuator entry positions.
• Standard stainless steel key supplied.
• Positive-opening travel of 10 mm.
• Maximum actuator approach and withdrawal speed of 600 mm/s.

Reliable Power-to-Lock Guard Interlocking for Industrial Machinery

The MKey9M differs from the safety-locking MKey9 by using an electromagnetic power-to-lock principle. When operating voltage is applied to the solenoid, the locking mechanism holds the actuator key in position; removal of the solenoid voltage permits the actuator to be released. This makes the MKey9M particularly suitable for process-locking applications where guard retention is required while equipment is operating.

Its high holding force, positive-opening contacts and flexible actuator-entry arrangement make the ABB MKey9M suitable for a wide range of industrial guard-door configurations. When combined with appropriately designed ABB safety relays, Pluto safety PLCs or other compatible safety control equipment, it can form part of a high-performance machine safeguarding system.

Typical Applications

• Industrial machine guard doors requiring process locking.
• Robot and automated manufacturing cells.
• Packaging and processing machinery.
• Automated production and assembly equipment.
• Conveyor and material handling systems.
• Hinged, sliding and removable machine guards.
• Applications requiring a 24 V DC power-to-lock guard interlock.