Rockwell Automation Guardmaster Cadet 3 440K-C21089 Tongue Interlock Switch
The A-B Guardmaster Cadet 3 Tongue Interlock 440K-C21089 is an essential safety device designed for machinery guarding applications. It ensures operator safety by preventing machine operation when the guard door is open, enhancing workplace safety and compliance.
Type:Tongue Interlock Switch
Brand:Guardmaster Cadet 3
Model Number:440K-C21089
Operating Voltage:24V DC
Protection Rating:IP67
Material:Stainless Steel
Actuator Type:Tongue Actuator
Contact Configuration:2NO (Normally Open)
Operating Temperature:-25°C to +80°C
Mounting Type:Surface Mount
The Rockwell A-B 440K-C21089 Guardmaster Cadet 3 Tongue Interlock is a robust safety interlock switch designed to provide reliable protection against machine operation when access panels or doors are opened. This innovative safety solution is crafted using durable stainless steel, ensuring longevity and reliability in harsh industrial environments.
Its compact design allows easy installation without compromising on space. With an IP67 rating, it can withstand dust and water ingress, making it ideal for use in various industrial settings. The interlock mechanism guarantees that the machine cannot start if the guard is open, significantly reducing the risk of injury to personnel.
The switch operates on a standard 24 VDC input voltage, with a contact rating of 2 A at 24 VDC, ensuring it can handle the necessary loads while maintaining high operational safety. It features a wide operating temperature range of -20°C to +70°C and a storage temperature range of -30°C to +80°C, making it suitable for a variety of climates and conditions.
The Rockwell A-B 440K-C21089 Guardmaster Cadet 3 Tongue Interlock is a critical component in any safety management system, helping to maintain a safe working environment and comply with industry safety standards.



















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