This section provides an overview for terminal relays as well as their applications and principles. Also, please take a look at the list of 8 terminal relay manufacturers and their company rankings.
Table of Contents
A terminal relay is used as interface devices that relay I/O loads, such as I/O of PLCs (programmable controllers) and solenoid valves.
The main structure of a terminal relay, which play the role of this I/O interface device, is a terminal block on a pedestal with a built-in printed circuit board, and multiple independent, single-pole, compact relays can be mounted on this pedestal, depending on the application, thus contributing to the compact relay structure while ensuring easy maintenance. This contributes to the miniaturization of equipment and reduced wiring.
Terminal relays are used in compact interface devices that relay I/O loads such as I/O of PLCs (programmable controllers) and solenoid valves, and are used as very important electronic components in everything from home appliances to production facilities that use electricity. They are used as very important electronic components in everything from electrical appliances to production equipment.
Terminal relays are also used to downsize control wiring in increasingly sophisticated equipment and production facilities.
Terminal relays generally consist of a terminal block with a built-in printed circuit board and multiple small, single-pole relays that can be used in parallel.
These single-pole type miniature relays can also be paralleled according to the purpose of control, so you can choose from 1-pole, 4-pole, 8-pole, and 16-pole types of terminal blocks with built-in printed circuit boards.
Relays used in terminal relays can be broadly classified into two types: "contact relays," which transmit signals mainly through mechanical opening and closing, and "non-contact relays," which transmit signals through electrical circuits such as semiconductors or SSRs (solid-state relays) without mechanical contact points.
These "with-contact relays" and "no-contact relays" include "a-contact" relays with normally open circuits and "b-contact" relays with normally closed circuits, which are used according to the purpose of relay control.
Be careful to select between a 2-element "thyristor" and a 1-element "triac."
When using SSR as a semiconductor switching element in a no-contact relay, there are two types of elements: a two-element "thyristor" and a one-element "triac." Therefore, care should be taken when selecting a thyristor or a triac.
*Including some distributors, etc.
Sort by Features
Sort by Area
Rockwell Automation, Inc. was founded in 1903 and is headquartered in Milwakee, WI. Rockwell Automation provides industrial automation and digital transformation solutions around the world. Rockwell Automation operates through their intelligent devices, software & control, and lifecycle services segments with both hardware and software products and services. The Intelligent Devices segment offers drives, motion, safety, sensing, industrial components, and configured-to-order products. The Software & Control segment provides control and visualization software and hardware, information software, and network and security infrastructure solutions. The Lifecycle Services segment provides consulting, professional services and solutions, and connected and maintenance services through independent distributors.
Number of Employees
Newly Established Company
Company with a History
This is the version of our website addressed to speakers of English in Canada. If you are a resident of another country, please select the appropriate version of Metoree for your country in the drop-down menu.