Control relay

How power supply control relays work

A power supply control relay is a piece of equipment designed to continuously monitor the status of devices connected to the power supply. If malfunctions, overheating, or voltage surges occur, the relay detects them and shuts down the equipment. An efficiently organised automation system is only possible with the use of various types of control relays.

What is a control relay and what are its functions?

Relays are equipment that enables efficient control of electrical loads or important processes in various industrial systems, as well as in poultry and agriculture.

Intermediate relays can have a general purpose or perform specific tasks: controlling lighting, pumps, temperature, or time periods. The devices are triggered by voltage or current, or by various signals from sensors or controllers.

Main types of relays and their purpose

An automatic relay monitors changes in the input parameter: temperature, pressure, illumination, and when this indicator reaches a predetermined value, it closes or opens the electrical circuit. Depending on the type of physical quantities, there are electrical, mechanical, thermal, optical, magnetic, acoustic, etc. They perform protective and control functions.

Multifunctional relay - a versatile solution

The multifunctional relay monitors the voltage level and ensures the smooth operation of electrical devices. Multifunctional devices are used in households, offices, industry and various business systems. Their functions:

• protection against voltage surges;
• power-on delay;
• switching off the equipment;
• signalling.

The versatile and efficient devices automate processes and protect equipment and various systems.

Thermal relay - overheating protection

A thermal relay monitors changes in thermal values. The device responds to fluctuations in temperature, heat fluxes, etc. The thermal relay, which operates on the basis of the built-in sensor's response to temperature changes, effectively protects the engine or other systems and equipment from overheating.

The thermal monitoring device is used in the following areas:

• Electric power industry;
• air conditioning and heating systems;
• pump motors in various systems;
• radiators, boilers and other heating equipment;
• control over water, feed, etc. supply systems in agriculture and animal husbandry;
• industrial equipment in production processes;
• emergency and security systems.

You need to set the thermal threshold at which the device will be triggered. The temperature control will be uninterrupted.

Safety relays are a key element of security systems

Safety relays are an important element in production. This type of device is designed to continuously monitor signals from safety equipment, quickly and reliably triggering the shutdown of the plant or machinery in emergency situations. This helps prevent accidents, protect personnel and maintain a safe working environment.

Multifunctional time relay - process control

This type of device is designed to create the required delay in the transmission of influence between individual device nodes or different devices by creating an independent time delay. This ensures a certain sequence of operation of the circuit elements. A time relay is indispensable if you need to automatically perform an action after a specified time period after the control signal is received. Where are time relays used? They can be used to switch the operation of a powerful electrical appliance to night time, switch lights on and off at a certain time of day, etc.

How to choose the right relay?

When choosing a device, you should consider the following important parameters:

• tension;
• current;
• time delay;
• type of load.

Depending on the application, you need to select the appropriate and optimal type of device.

What are the advantages of using a control relay

The control relay offers a number of advantages. These include uninterrupted power supply, protection of equipment from overvoltage or overheating, and stable current supply, which increases the efficiency of the system. Modern devices are easy to integrate into any system, simple to configure, multifunctional, versatile and reliable.

What are the best deals when buying relays from VADA?

The Vada online store offers high-quality equipment from well-known global brands. You can order the following models on the website:

• thermal from Schneider Electric;
• Siemens safety device;
• pulse from ETI;
• multifunctional control, time, start and intermediate control devices from ETI.

The advantages of purchasing equipment from VADA are high quality and modern materials, innovative technologies and a product warranty. The company's specialists provide professional advice and perform installation, maintenance and repair services.