For a dependable safety interlock switch that is perfectly suited to work on small machine guard doors, the 440K-C21097 Cadet 3 switch by Allen Bradley Guardmaster is the ideal solution.

The versatile Cadet 3 safety switch has 2 entry slots and a conveniently rotatable head, which provides up to 8 actuator entry positions. It has unique compact housing to offer improved application flexibility. To ensure easy mounting it also features industry standard DIN 50047 fixing centers. This reliable interlock switch is designed for use with hinged, sliding, and lift-off machine guards and provides excellent protection for equipment and machine operators.

The 440K-C21097 Cadet 3 interlock unit has 3NC (Normally Closed) safety contacts and a 90° actuator, which is made of stainless-steel for enhanced durability. Conduit entry is M16. It is environmentally sealed to IP67, ensuring that it is both dust-proof and water-tight and can be used in wash-down environments. The housing is red for easy visibility and is made of resilient UL approved glass-filled polyester. It has a voltage rating of 600VAC/DC. To operate this safety switch the specially profiled key should be permanently attached to the machine guard door. It can then be inserted into the switch.

• 3NC safety contacts
• Actuator type is 90°
• Dual entry rotatable head which offers 8 actuator entry positions
• Industry standard fixing centres to DIN 500, ensuring ease-of-mounting
• Compact size, perfect for small lightweight guards
• IP67 rated, making it ideally suited for wash-down environments

Note: A blanking plug is supplied for the unused key entry.
This device can be used with GuardLink, a new linking technology from Allen Bradley Guardmaster. GuardLink simplifies and reduces the connection time of the safety system while providing real-time diagnostic information over Ethernet IP. This simplifies the identification of the location of the device that has tripped the system. Thus, it reduces downtime and improves the overall efficiency of the machines. For more details, please refer to the GuardLink brochure.

EN954-1
ISO13849-1
IEC/EN60204-1
NFPA79
EN1088
ISO14119
IEC/ EN60947-5-1
ANSI B11.19
AS4024.1
CE certified
TUV certified
CCC certified
UL approved

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.