Miniature relays

Miniature relays - key elements of modern automation

Miniature relays are an essential element of many electrical and automation systems.   At Onninen we offer a wide selection of these compact devices. Our portfolio includes products from renowned brands such as Relpol and Finder. We make sure to meet the diverse needs of our customers.

Electromagnetic relays are the basis of many installations. Their small size makes it easy to install in limited spaces. They are often used in controllers and control systems. Our offer includes single- and double-contact models. 1P and 2P versions with different parameters are available.

Types of miniature relays available at Onninen

In our assortment you will find:

• Subminiature relays for the most compact applications
• Heavy-duty industrial relays
• Models with high surge current resistance
• Relays dedicated to printed circuits
• Versions adapted to plug sockets

We offer relays with coils of various control voltages.   The most popular are 12V DC, 24V DC and 230V AC. Selecting the right voltage is crucial for the correct operation of the system. Our consultants will be happy to help you choose the optimal solution.

Miniature relays are characterized by small dimensions. This is especially important in applications with limited mounting space. Despite their small size, they offer different load currents. This allows for their versatile use.

Practical applications of miniature relays

In our daily practice, we see many interesting applications of these devices. Miniature relays are often used in alarm systems. They are also used in lighting control systems. They also work well in building automation.

We recently used Finder miniature relays in a project for a large office building.   They were used to control the blinds throughout the building. Their compact size allowed for installation in small installation boxes. The customer was pleased with the reliability and quiet operation of the devices.

In the case of office reorganization, we most often encounter the need for flexible lighting control. Miniature relays are perfect for such situations. They allow for easy regrouping of circuits without the need for major changes in the installation.

We often come across questions about selecting relays for home automation systems. In such cases, we recommend models with 24V DC coils. They are compatible with most controllers used in smart homes. Their small size makes them easy to hide in installation boxes.

Miniature Relay Selection Criteria

When selecting the appropriate relay, there are several key parameters to consider:

• Control coil voltage
• Contact load current
• Number and type of contacts
• Dimensions and mounting method
• Mechanical and electrical durability

Our experience shows that it is crucial to accurately determine the operating conditions of the relay.   The ambient temperature and humidity must be taken into account. The switching frequency is also important. For industrial applications, vibration and shock resistance are important.

Onninen recommends paying special attention to electrical parameters. The coil voltage must match the control voltage in the system. The rated current of the contacts should be appropriately selected for the load. It is also worth considering the required relay response time.

Many customers ask us about the differences between electromechanical and solid-state relays. The former are cheaper and can switch larger currents. Solid-state relays have a longer life and operate faster. The choice depends on the specific application.

For safety applications, we recommend relays with increased reliability. We offer models with certificates for fire protection applications. They are rigorously tested and meet strict standards.

Miniature relays are not only actuators, but also important components of logical systems.   In control systems, they are often used to implement simple logical functions. This allows for simplifying the system and increasing its reliability.

At Onninen, we focus on comprehensive customer service. Our technical advisors will be happy to help you select the optimal relays for your specific application. We also offer support during the design and commissioning of automation systems.

We invite you to contact our specialists. We will help you choose the right miniature relays for your project. We provide expert advice and fast order fulfillment. With Onninen you gain a reliable partner in the field of automation and electrical engineering.