Best SPST Solid State Relays of 2025
* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.
SPST solid state relays are electronic switches that are designed to control the flow of electrical current in a wide range of applications. These relays offer many advantages over traditional electromechanical relays, including faster switching speeds, longer life spans, and greater reliability. They are commonly used in industrial automation, robotics, and other high-performance applications where precise and reliable control of electrical current is essential. SPST solid state relays are available in a variety of voltage and current ratings, making them suitable for a wide range of applications.
At a Glance: Our Top Picks
#TOP 1
9.9
#TOP 2
9.8
#TOP 3
9.6
Top 6 SPST Solid State Relays
Kyoto Electric DC-to-DC Solid State Relay
The Kyoto Electric DC-to-DC Solid State Relay is designed to operate with control voltage ranging from 3-32VDC. This relay features a single-pole, single-throw (SPST) contact form and measures 1.4"L x 0.3"W x 0.9"H. The relay's solder lead terminal type makes it easy to install and use. This product is a great choice for those in need of a reliable solid state relay for their project.
Idec RSSDN-50A Solid State Relay
The Idec Relay 50A Panel, also known as the Idec RSSDN-50A Solid State Relay, is a reliable solution for your electrical switching needs. With a single-pole, normally open contact configuration, it can handle a load current of 50A and operate at a maximum voltage of 660VAC. Mounted on a panel and featuring screw terminals, this relay offers easy installation and maintenance. The solid-state design ensures durability and quiet operation, making it ideal for various industrial applications.
Crydom Solid State Relay 7A
The Crydom Relay is a reliable solid state relay designed for DC switching applications. It operates within a control voltage range of 3.5V to 32V, allowing you to easily integrate it into various systems. With a load current capacity of 7 amps, it provides ample power handling for your needs. Additionally, it supports an operating voltage of up to 100V, ensuring versatility across different setups. The screw terminal connections make installation straightforward, giving you convenience and reliability in your electrical projects.
IDEC RSSDN-25A Solid State Relay
The IDEC RSSDN-25A is a solid state relay with 25 AMP capacity and dual SCR output. It is designed for panel mounting and operates with input voltage of 4-32 VDC and output voltage of 48-660 VAC. The relay features an input status LED indicator, which allows users to easily monitor the relay's operation. This product falls under the category of Solid State Relays.
Rizees G3VM-61A1 Solid State Relay
The Rizees Solid State Relay is a versatile component suitable for both AC and DC applications. With an input voltage of just 1.15VDC, it allows for easy integration into various systems. You can operate loads ranging from 0 to 60 volts, providing flexibility for different projects. The relay supports a load current of up to 500 mA, making it ideal for controlling devices without the wear of mechanical contacts. Its PC pin termination style ensures straightforward installation, allowing you to set up your circuits quickly and efficiently.
Weidmüller MICROOPTO Solid State Relay
The Weidmüller Solid State Relay is designed for efficient control with a single-pole, normally open (SPST-NO) configuration. It supports a maximum load current of 100mA, making it ideal for various applications where reliable switching is essential. Operating up to 24VDC, this relay ensures that you can manage your electrical devices with confidence. Its DIN rail mounting feature allows for easy installation in control panels, saving you time and effort. Plus, screw terminals provide secure connections, giving you peace of mind in your setup.
Frequently Asked Questions (FAQs)
1. What are 3 types of Solid-state Relays?
The output circuit of the solid state relay can be divided into three types: DC output circuit, AC output circuit and AC/DC output circuit.
2. What is solid state relay?
What Is a Solid State Relay? A Solid State Relay (SSR) is a relay that does not have a moving contact. In terms of operation, SSRs are not very different from mechanical relays that have moving contacts. SSRs, however, employ semiconductor switching elements, such as thyristors, triacs, diodes, and transistors.
3. What are two types of Solid-state Relays?
Types of Solid State Relay (SSRs). Instant ON Solid State Relay.Zero Switching Solid State Relay.Peak Switching Solid State Relay.Analog Switching Solid State Relay.
4. Are there Solid-state Relays?
Unlike Electromechanical Relays (EMRs), the SSR uses semiconductor switches and optoelectronics instead of magnetism and moving contacts. It is important to realise there are two common types of solid state relay, those designed for switching AC loads and those designed for switching DC loads.
During our spst solid state relay research, we found 24 spst solid state relay products and shortlisted 6 quality products. We collected and analyzed 3,168 customer reviews through our big data system to write the spst solid state relays list. We found that most customers choose spst solid state relays with an average price of $27.21.
The spst solid state relays are available for purchase. We have researched hundreds of brands and picked the top brands of spst solid state relays, including Kyoto Electric, Idec, Crydom, Rizees. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.
Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.