Control Relays

Control Relays are the backbone of automated electrical systems, serving as the essential interface between low-power control signals (from PLCs or sensors) and high-power industrial equipment. Whether you are looking for signal isolation, multi-circuit logic, or heavy-duty switching, Kent Electrical Supply offers a comprehensive selection of industrial relays designed to ensure system reliability and operator safety. We stock industry-leading brands including Schneider Electric, Eaton, Siemens, and Finder, providing solutions for even the most demanding environments.

Our inventory includes a wide range of configurations, from compact "ice cube" relays for panel space optimization to robust machine control relays capable of handling high-inrush currents. We offer various coil voltages (12V, 24V DC, 120V AC) and contact arrangements to fit your specific wiring requirements.

Key Benefits of Industrial Control Relays

Electrical Isolation: Protects sensitive control electronics by creating a physical barrier between low-voltage logic and high-voltage power circuits.
Signal Amplification: Allows a milliamp-range signal from a controller to switch loads up to 15 Amps or more.
Logic Expansion: Easily multiply a single control output to trigger multiple independent circuits simultaneously using DPDT or 4PDT configurations.
Serviceability: Plug-in styles with DIN-rail sockets allow for rapid replacement during maintenance, minimizing facility downtime.

Types of Relays & Applications

Different industrial tasks require specific switching technologies. We offer the following categories to meet your project needs:

General Purpose Relays: Versatile and cost-effective; ideal for HVAC, lighting, and general automation.
Solid-State Relays (SSR): No moving parts for high-speed switching and near-infinite mechanical life—perfect for temperature control and high-cycle applications.
Time-Delay Relays: Critical for sequential motor starting and process timing functions.
Safety Relays: Specialized units for emergency stop (E-stop) circuits and light curtains, ensuring compliant machine safety.

Control Relay Comparison Guide

Relay Type	Primary Advantage	Best Use Case
Electromechanical (EMR)	Low cost & high current handling	General switching & isolation
Solid-State (SSR)	Silent operation & long life	High-frequency cycling (Heaters)
Latching Relays	Maintains state without power	Energy-efficient remote control

Need assistance matching a replacement relay or selecting a socket and base for your DIN rail? Our technical team can help you navigate contact ratings (NO/NC), coil specifications, and mounting styles. Order your control relays by 4 p.m. EST for same-day shipping on most in-stock items.