Series 5400 B/W Controls Plug In Style Liquid Level Control Relay COMPACT PLUG IN STYLE RELAY B/W Series 5400 Relays were developed especially for use as safe, reliable, economical original equipment components in many different types of commercial and industrial products. Designed to operate from electrodes or probes contacting conductive liquids, they are ideally suited to level control applications in such products as vending, dispensing, ice-making machines, water softeners, dishwashers, and coffee makers, plus many type of operating equipment in the food, drug, dairy, brewing, distilling and chemical processing industries. In addition, Series 5400 Relays have a low energy sensing circuit with a lockin holding feature that permits operation over a range of levels, or from momentary contact pilot devices such as float, actuators, etc. Thus they are equally suitable for use as original equipment components in many products and systems that require monitoring and control of such process variable as temperature, pressure, humidity, flow, voltage and current, etc. OTHER FEATURES AND ADVANTAGES • UL Recognized Component File No. E61377 • CUL File No. LR 33434 • Choice of direct or inverse operation to provide failsafe control. In direct operation, load relay is energized when the low voltage ac sensing circuit is completed. In inverse operation, load relay is de-energized when the low voltage ac sensing circuit is completed. • LED indicates when relay is energized. • Relays will operate reliably when mounted in any position required to meet a complete range of application design requirements. • Relays will operate over ambient temperature range from –10° + 131°F (-23° to 55 °C). • User adjustable sensing resistance. • Rugged octal plug-in housing. • Heavy-duty internal construction. BASIC SPECIFICATIONS Voltage: 120 volts ac, 50/60 hertz 240 volts ac, 50/60 hertz 24 volts ac, 50/60 hertz (special order) Power Required: 1.2 volt-amperes max. Load Contacts: Single pole, double throw. Silver Cadmium Oxide Contact Ratings: 10 amps resistive load or 1/3 hp at 120 volts ac; 6 amps at 240 volts ac or 28 volts dc. Min. load 100 mA at 5 VDC. Sensing Voltage: 18 VAC RMS max. Sensing Current: 2.0 mA RMS max. Sensitivity: Adjustable 1K to 250K ohms +/- 10%. Factory set at 100k OHMS +/- 10%. Mounting: 8 pin octal base socket (sold separately) Time Delay: 5 seconds +/- 10%, other delay times available on 5400-A and 5400-B series only. NOTE: All line voltage circuits are isolated from the low voltage ac sensing circuit to assure optimum safety in service. DISCONNECT POWER BEFORE SERVICING 2.362 1.299 .709 5 4 7 8 1 2 3 Ø.165 6 .984 .315 1.575 .866 7.00 .45 .065±.015 .33 5400- STRAP 5400-RS Series 5400 Relay Dimensions 1.75 2.40 3.45 MAX. 2.90 E67365 ® B/W Controls Series 5400 Liquid Level Controls Single Probe (Direct Operation) Cat. No.: 5400-A-L1 Voltage: 120 VAC Sensitivity range: 1 K to 250K ohms Clawson, MI 48017 U.S.A.

TYPICAL APPLICATIONS Diagrams at right illustrate basic details of typical application in which Series 5400 Relays are used as original equipment components to provide fail-safe control by de-energizing the load in event of power of relay failure. In Diagram 1, Type 5400-C Relay is used in direct operation to provide automatic pump down control for dehumidifiers, sumps or any other product requiring control of a liquid at a given high-level set point. In Diagram 2, Type 5400-D Relay is used in inverse operation to provide pump-up control for carbonators, humidifiers, purification stills, etc....