Dazic Zero Speed Switch Model 2120-10 Type EP-1 Explosion Proof

The Dazic Zero Speed Switch Model 2120-10 Type EP-1 is an electromechanical device designed to monitor rotational speed in industrial machinery, detecting under-speed or zero-speed conditions to prevent equipment damage, conveyor jams, or process failures. Manufactured by Control Concepts under the Dazic brand, this explosion-proof variant is ideal for hazardous environments such as chemical plants, grain elevators, or mining operations where flammable gases or dust are present. Key features include a rugged aluminum housing rated for Class I Div 1 Groups C&D and Class II Div 1 Groups E,F,G, ensuring safety in explosive atmospheres. It operates on 480VAC with a fixed 50 RPM setpoint, providing reliable shutdown signals via relay contacts when speed drops below the threshold. Advantages over similar products include its non-contact magnetic sensing for durability, easy installation on shafts or pulleys, and low maintenance requirements compared to electronic sensors that may fail in harsh conditions. Benefits encompass enhanced safety, reduced downtime, and compliance with industrial standards. Drawbacks may include higher initial cost due to explosion-proof certification and the need for periodic mechanical inspections. This unit appears new, unused, with original packaging and attached warning/instruction tags, making it suitable for applications in bulk material handling, pumps, and fans. For detailed setup, refer to manufacturer manuals available on the Control Concepts website.