Siemens 574889 EBE 46-535-3 Rate Switch

The Siemens 574889 EBE 46-535-3 rate switch monitors liquid or gas flow in industrial pipelines to help ensure safe operation of pumps, compressors, and other fluid-handling equipment. With normally open or normally closed contacts, it functions as a flow-monitoring and safety interlock device for inline or side-mount installations across chemical processing, water treatment, HVAC systems, and general manufacturing processes where precise flow detection is critical. Key specs include operating temperature -20°C to +80°C, a model-specific pressure rating, and electrical ratings that are model-dependent but typically 250 VAC / 10 A; housing is available in stainless steel or aluminum. Common replacements and compatible options include Siemens 574888 EBE 46-535-2, Honeywell FS-7 Flow Switch, and Dwyer RPS-3 Flow Switch.