Allen Bradley Guardmaster 440K Safety Interlock Switch, 2NC/1NO, Keyed, Zinc

Reliable, durable, and versatile - the 440K-MT55001 safety interlock switch by Allen Bradley Guardmaster is an excellent machine guard solution for your safety system.

The 440K-MT55001 interlock switch has 2NC/1NO contacts and a maximum voltage rating of 500VAC/250VDC. The maximum current rating is 2.2A. This safety switch has an ingress protection rating of IP67, ensuring that it is both dust-proof and water-tight. The housing for this unit is die-cast painted zinc alloy in red, offering high durability and providing easy visibility of the switch. The operating temperature range is -20°C to 80°C. This dependable switch has break-before-make action and M20 conduit entry.

The MT-GD2 tongue interlock switch offers application flexibility with its dual entry slots, which can provide up to 8 different actuator entry positions due to the conveniently rotatable head. The head can be moved via the tamper-resistant cover screws and the switch includes front and end entry. This safety switch is designed to be fitted on hinged, sliding, and lift-off machine guard doors. It ensures superior protection for equipment and personnel.

• 2NC safety / 1NO auxiliary contact configuration
• Forced guided contacts that comply with EN 1088, IEC 947-5-1
• Robust die-cast painted zinc alloy housing, in highly visible red
• Ideal for washdown environments due to high IP67 rating
• Rotatable head with dual slots and 8 actuator entry options

CE certified
UL listed
TUV certified
EN 1088
IEC 947-5-1
DIN50041
IP67 rated

Safety interlock switches work by securely locking guard doors and gates, preventing unsafe access to hazardous areas where machinery may be in operation. This helps to decrease the risk of injury to personnel and damage to equipment. They can also be used to monitor the status of the guard, and to ensure that machinery cannot start up or run while the guard door is open. They are often utilised in industrial applications, such as safeguarding factory production lines. They can vary in lock type, maximum current and voltage, and housing material. These interlock switches are specifically designed to meet high standards of protection.

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.