Allen-Bradley 440G-A27143 is a Bulletin 440G GuardMaster MT-GD2 fully flexible safety key interlock switch. This tongue-style safety switch is designed for guard door monitoring, providing a flexible actuator for simplified alignment and installation. It features a positive-opening, direct-action contact mechanism for reliable safety circuit control. The device is rated for safety applications, helping to meet machine safety standards for personnel protection.

Product Details

Allen Bradley Guardmaster 440G-A27143 Fully Flexible Actuator

The 440G-A27143 Actuator from Allen Bradley Guardmaster is a fully flexible actuator which is suitable for use with the TLS-GD2 model safety interlock switch. It is made of tough stainless steel which ensures optimal durability.
Flexible actuators are ideal in applications where guard alignment is difficult to maintain, such as areas with heavy vibration or doors which are affected by sagging. This type of actuator allows slight movement to enable entry into the switch.

Features and Benefits:

Fully flexible
Adjusting screws
Made of durable stainless-steel
The GD2 actuators are dedicated actuators for GD2 models only. They are not suitable for use with standard models.

What are Safety Interlock Switches?

Safety Interlock Switches are locking devices which can be used to monitor the position of a machine guard door and turn off the power supply when the safety barrier is released. They can also be used to keep a guard securely locked when machinery is running. This helps to prevent personnel from accessing a hazardous area where machinery may be in motion and minimises risk of injury or equipment damage. Interlock switches are often used for industrial applications with sliding, hinged, and lift-off safety guards.

What is a Safety Interlock Actuator?

The actuator is a separate component which is usually inserted into the switch to enable the locking mechanism to work. It forms a key part of the overall safety interlock unit. Different types include: 90º, Flat, Standard, Semi-Flexible, Fully Flexible, and Specialty.
Rockwell Automation is a global leader in industrial automation and digital transformation, and brings smart manufacturing to life. With a long legacy of creating Allen-Bradley integrated control and information solutions, we help make you as productive as possible. Our portfolio of sensing, safety and motor control products can support your move towards smart machine applications. Allen-Bradley IO-Link sensors are data-enabled and communicate with all field buses, providing diagnostic and health information about the device before a machine stops, and enabling quick production changeovers through fast parameter downloads from PLCs into the device. This reduces machine downtime and increases manufacturing OEE. For safety components, products with built-in diagnostics simplify the set-up of the smart device, and reduce maintenance, leading to a more efficient, machine data-driven approach.