R-K Electronics, Inc.

R-K Electronics, Inc. is a Mason, Ohio-based manufacturer of electrical automation control components, operating from 7405 Industrial Row Rd. The company designs and produces both standard and custom products for equipment and machinery control systems, with all products manufactured in Ohio. R-K's product portfolio spans eight categories: single-phase and three-phase voltage relays for monitoring power supply conditions, AC current relays for motor protection and load monitoring, pumping and liquid level controllers, intrinsically safe relays for hazardous location applications, zero speed sensing relays, transient voltage filters for surge protection, electronic timers, general-purpose relays, and custom-engineered solutions. The pumping and liquid level line includes the PDC duplex pump-down controller with high alarm, the QPB and CUB-0004 microcomputer triplex/quadplex pump sequencing relays, the CAB alternating relay, the TDR-A alternating relay with local or remote control, and the CUB-0001 transducer back-up control. Liquid level products include the LLA dual high-low alarm relay, LLF/D liquid level control relay, LLO/C dual seal or temp-stat failure relay, and STR/STRP seal and temp-stat relays. The intrinsically safe line includes the ISL latching relay, ISR two-channel relay, IS4-L latching relay with intrinsically safe inputs, and IS4-R four-channel relay with intrinsically safe inputs. R-K serves two primary markets: heating and refrigeration, and pumping and level control for water and wastewater applications. The company provides PowerPoint sales presentations with YouTube operational videos and offers a Products and Capabilities Overview document plus current pricing sheets.