440K-C21074

Overview of Allen Bradley 440K-C21074

The Allen Bradley 440K-C21074 is part of the Guardmaster Cadet 3 series, designed for safety applications in industrial settings. This tongue interlock switch features 2 normally closed (NC) and 1 normally open (NO) contacts. The switch operates on a break-before-make (BBM) principle, ensuring safety by disconnecting existing contacts before new ones are made. It includes a GD2 metal alignment guide with a semi-flex actuator, providing durability and flexibility in various environments. The switch is encased in a plastic housing with M16 conduit and 1/2-inch adaptor for secure connections. It is ideal for applications requiring rigorous safety standards, such as preventing accidental access to machinery.

Key Features of Allen Bradley 440K-C21074

- **Safety Contacts**: 2 normally closed (NC), providing safety against accidental opening. - **Auxiliary Contact**: 1 normally open (NO) for auxiliary functions. - **Break-Before-Make (BBM) Principle**: Ensures safety by disconnecting existing contacts before new ones are made. - **Actuator Type**: GD2 metal alignment guide with semi-flex actuator for precise and durable operation. - **Conduit and Adaptor**: M16 conduit with 1/2-inch adaptor for easy installation. - **Housing Material**: Plastic for durability and resistance to environmental conditions. - **Ingress Protection**: IP67 for protection against dust and water immersion. - **Operating Temperature**: -20…+80 °C, suitable for various industrial environments.

Technical Specs of 440K-C21074

Specifications	Details
Operating Temperature	-20…+80 °C (-4…+176 °F)
Ingress Protection	IP67
Contact Rating (AC)	A600/AC-15 240V/3 A, 120V/6 A
Contact Rating (DC)	N150/DC13 24V/2 A
Mechanical Life	1,000,000 operations

Applications / Use Case

The Allen Bradley 440K-C21074 is primarily used in safety-critical applications where machinery access needs to be controlled. It is ideal for protecting personnel from hazardous machinery by ensuring that guards are in place before machinery can operate. This switch is commonly used in industries such as manufacturing, where safety standards are stringent, and machinery safety is paramount.

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