Electromechanical Relays
Electromechanical relays remain a core component in electrical and automation systems, providing dependable switching functionality between input signals and load circuits. Our catalog includes plug-in relays, DIN-rail mountable relays, panel-mounted relays, and PCB relays to meet your installation requirements. When you have a question or need help with a quote, we have got your back.
What Is an Electromechanical Relay?
An electromechanical relay (EMR) is an electrically operated switch that uses an internal coil to open or close contacts. When the coil is energized, the relay either completes or interrupts a circuit—allowing control of high-current or high-voltage loads with a low-power input.These relays are widely used in control panels, motor circuits, vehicle electronics, building automation, and machine safety systems due to their straightforward design, robust performance, and versatility.
What Kind of Relays Does Control Design Supply Offer?
General Purpose Relays
Ideal for switching low- to medium-power loads in a wide range of applications. These versatile relays are commonly used in HVAC systems, lighting control, automation panels, and power distribution boards. Choose from single-pole to multi-pole designs with options for plug-in sockets, PCB mounting, and DIN rail compatibility.Key Features:
- SPDT, DPDT, and multi-pole configurations
- AC and DC coil voltages
- Compact and economical design
- LED indicators and test buttons available on select models
Automotive Relays
Designed to meet the rigorous demands of vehicle electrical systems, our automotive relays are used in lighting, ignition, fuel pumps, power windows, and ECUs. These relays are built to withstand vibration, temperature extremes, and voltage spikes commonly found in automotive and off-highway environments.Options include:
- Mini ISO and micro relays
- Sealed enclosures for weather resistance
- High-current switching (up to 80A+)
- 12V and 24V coil options for standard and heavy-duty vehicles
Industrial Relays
Engineered for use in industrial automation, process control, and factory machinery, these relays offer high-performance switching and long mechanical life. Designed to be easily integrated into control cabinets, industrial relays often include accessories like socket bases, retaining clips, and cross-connectors.Ideal for:
- PLC interfacing
- Load switching in motor control systems
- Remote control circuits
- Machine start/stop functions
Safety Relays
Used in safety-critical circuits, safety relays are essential for applications where the protection of personnel and equipment is a top priority. These relays provide fail-safe operation and meet strict standards for functional safety (such as ISO 13849 or IEC 62061).Typical applications include:
- Emergency stop systems
- Light curtain monitoring
- Guard door interlocks
- Two-hand control stations
- Forced-guided contacts
- Redundant circuitry
- Status indication LEDs
- Compatibility with safety controllers
Overload Relays
Protect your motors and equipment from thermal overloads, phase loss, and current imbalance with our range of thermal and electronic overload relays. These relays are commonly used in motor starter assemblies to prevent damage and reduce downtime.Types of overload relays we offer:
- Bimetallic thermal overload relays
- Electronic overload relays with adjustable trip settings
- Manual or automatic reset options
- DIN rail or direct-mount to contactors
Why Choose Control Design Supply for Relays?
- Wide Product Selection – From everyday general-purpose relays to advanced safety models
- Trusted Brands – Quality components from leading relay manufacturers
- Application Expertise – Guidance to match the right relay to your voltage, load, and installation needs
- Fast Shipping & Competitive Pricing – Get the components you need, when you need them
- Customization Options Available – Pre-wired relay sockets, bundles, and labeling upon request
Order Electromechanical Relays Online
Whether you're looking for panel-mounted safety relays, vehicle power relays, or industrial switching solutions, Control Design Supply has the right products to power your control systems. Our knowledgeable team is here to help you find the right relay for your application and environment.Browse our relay categories today, or reach out for help selecting the ideal electromechanical relay for your system.