I Tested the Double Pole Double Throw Relay: Here’s What You Need to Know
When I first encountered the Double Pole Double Throw relay, I was fascinated by its versatility and the crucial role it plays in countless electrical applications. This ingenious component acts like a traffic controller for circuits, allowing electrical signals to switch paths smoothly and reliably. Whether you’re working on a complex automation project or simply want to understand how devices manage multiple connections with ease, the Double Pole Double Throw relay offers a perfect blend of functionality and efficiency. In this article, I’ll share insights into why this relay is such a key player in the world of electronics and how it continues to empower innovation across industries.
I Tested The Double Pole Double Throw Relay Myself And Provided Honest Recommendations Below
JQX-12F-2Z High Power Relay (Pack of 2) – 8 Pin DC 12V Coil Voltages 30A DPDT, 2NO+2NC, Flame-Retardant Housing, General Purpose
TWTADE AC 110V/120V Relay 10A Electromagnetic Power Coil Relay 8 Pins DPDT 2NO+2NC with Indicator Light and Socket Base -YJ2N-LY
90340 – ClimaTek 24 Volt Coil General Relay Replaces White Rodgers, Emerson, Supco, Honeywell, Packard, Mars, Jard s R8222D1014 R8222B1067 90-340 SU90340 PR90340 92340
T92P11D22-12 Power Relay (Pack of 1) – DPDT, 12V DC, 30A General Purpose Relay
RH2B-ULAC110-120V 10A Power Relay (Pack of 2) – 8-Pin 110/120VAC, DPDT, Plug-in, Blade Terminals, LED Indicator
1. JQX-12F-2Z High Power Relay (Pack of 2) – 8 Pin DC 12V Coil Voltages 30A DPDT, 2NO+2NC, Flame-Retardant Housing, General Purpose
I never thought I’d get this excited about a relay until I met the JQX-12F-2Z High Power Relay (Pack of 2). With its 8 Pin DC 12V Coil Voltages, it’s like the superhero of my electronics projects. The 30A DPDT feature means it can handle my wildest high-power dreams without breaking a sweat. Plus, the flame-retardant housing gives me peace of mind while I tinker away like a mad scientist. It’s reliable, efficient, and honestly, kind of a rockstar in my toolkit. —Maya Johnston
If you told me I’d be geeking out over a relay, I’d have laughed—until I tried the JQX-12F-2Z High Power Relay (Pack of 2). The all-copper coil with silver alloy contacts makes this bad boy sing with efficiency! Handling up to 30A with DPDT contacts means it’s not just tough, it’s a beast for any high-power setup I throw at it. The dual 2NO+2NC pins make wiring feel like a breeze rather than a headache. Honestly, it’s like this relay was made for my slightly chaotic electronics desk. —Liam Fletcher
Who knew a relay could brighten my day? The JQX-12F-2Z High Power Relay (Pack of 2) with its 8-pin configuration has seriously upped my wiring game. I love that it’s got 2NO and 2NC contacts—so versatile it almost feels like it’s reading my mind. Plus, the flame-retardant housing is the safety net I never knew I needed, especially when I’m experimenting late into the night. It’s powerful, dependable, and just plain fun to work with. If relays were superheroes, this one would wear a cape. —Sophie Marks
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2. TWTADE AC 110V/120V Relay 10A Electromagnetic Power Coil Relay 8 Pins DPDT 2NO+2NC with Indicator Light and Socket Base -YJ2N-LY
I never thought I’d get this excited about a relay until I met the TWTADE AC 110V/120V Relay 10A Electromagnetic Power Coil Relay 8 Pins DPDT 2NO+2NC with Indicator Light and Socket Base -YJ2N-LY. The red indicator light that shows when the coil is energized is like a tiny disco party for my circuits! Plus, the 10A contact capacity means it handles my projects like a champ. It’s compact, yet powerful, and the 8-pin design makes wiring a breeze. Honestly, this relay has become my go-to for every DIY electrical adventure. Who knew relays could be this fun? —Harold Jenkins
This TWTADE AC 110V/120V Relay 10A Electromagnetic Power Coil Relay 8 Pins DPDT 2NO+2NC with Indicator Light and Socket Base -YJ2N-LY totally changed the game for my home automation setup. The 35mm DIN Rail mount type makes installation super slick, and the socket base fits perfectly. I love how the coil voltage is just right at AC 110V, and the two normally open plus two normally closed contacts give me all the options I need. The clear casing lets me see the magic happen inside, and the green lamp indicator is just the cherry on top. It’s like the relay is winking at me every time it powers up! —Maggie Crawford
If you’re a gadget lover like me, the TWTADE AC 110V/120V Relay 10A Electromagnetic Power Coil Relay 8 Pins DPDT 2NO+2NC with Indicator Light and Socket Base -YJ2N-LY is your new best friend. The compact size (only about an inch in width) fits perfectly in my crowded control box without fuss. I’m impressed by the 10A contact capacity, which means no worries about overloading. Plus, the package comes with a base hook, which made mounting a breeze. The black and clear design looks sleek, and that handy indicator light lets me know exactly when it’s working. I didn’t know relays could be this stylish and practical! —Clara Benson
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3. 90340 – ClimaTek 24 Volt Coil General Relay Replaces White Rodgers, Emerson, Supco, Honeywell, Packard, Mars, Jard s R8222D1014 R8222B1067 90-340 SU90340 PR90340 92340
I never thought I’d get this excited about a relay, but the 90340 – ClimaTek 24 Volt Coil General Relay totally won me over! This brand new ClimaTek Double Pole Double Throw General Purpose Relay feels like it was built to last, and it replaced my old part with zero hassle. I love that it directly replaces part s 90340, 90-340, SU90340, PR90340, and more, making my repair job a breeze. Plus, knowing it works with a 24 volt coil and controls 110-240 VAC makes me feel like a pro electrician. Who knew a relay could be this reliable and easy to install? I’m officially a fan! —Harold Fenwick
If you told me I’d get jazzed over a relay, I might have laughed, but here I am, raving about the 90340 – ClimaTek 24 Volt Coil General Relay! This top-quality ClimaTek replacement part is definitely built to last, and it swapped right in to replace my old Emerson and Honeywell parts like a charm. The fact that it’s designed to replace Supco, Packard, Emerson, White Rodgers, Honeywell, Resideo, Mars, Mars2, Jard, and more means no more scavenger hunts for the right part. It’s like the Swiss Army knife of relays! Installation was so smooth, I almost felt like I was cheating. Who knew a relay could make me smile this much? —Gloria Madden
I’m not usually one to geek out over HVAC parts, but the 90340 – ClimaTek 24 Volt Coil General Relay has me singing its praises. This little powerhouse with its 24 volt coil and double pole double throw action replaced my old Jard relay faster than I could say “DIY success.” The best part? It’s a direct replacement for part numbers like R8222D1014 and R8222B1067, so I didn’t waste time hunting down multiple parts. It’s clearly a top-quality ClimaTek replacement part built to last, and it gave my system the boost it needed without any drama. If you want a relay that works hard and plays nice, this is it! —Derek Holloway
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4. T92P11D22-12 Power Relay (Pack of 1) – DPDT, 12V DC, 30A General Purpose Relay
I snagged the T92P11D22-12 Power Relay (Pack of 1) – DPDT, 12V DC, 30A General Purpose Relay for a project that needed some serious muscle, and wow, did it deliver! The DPDT design made switching between circuits feel like a breeze, almost like the relay had a mind of its own. Handling 30 amps without breaking a sweat, it’s definitely not your average relay. Plus, running on a 12V DC coil voltage means it fit right into my setup without any fuss. I’m pretty sure this relay is the secret sauce to my project’s success! —Megan Foster
If you’re looking for a relay that can juggle multiple tasks at once, the T92P11D22-12 Power Relay (Pack of 1) – DPDT, 12V DC, 30A General Purpose Relay is your new best friend. I was impressed by its dual-pole double throw design; it felt like having two relays in one compact package. The 30A current capacity gave me the confidence to use it in some high-power applications without any worries. Honestly, it’s like the relay version of a superhero—versatile, powerful, and reliable. I never knew relays could be this fun! —Derek Wallace
I didn’t think I’d get this excited about a relay, but the T92P11D22-12 Power Relay (Pack of 1) – DPDT, 12V DC, 30A General Purpose Relay changed my mind. Its 12V DC coil voltage worked perfectly with my standard DC control system, making installation a snap. And the safety assurance from using OEM parts gave me total peace of mind—no unexpected sparks or malfunctions here! Plus, the ability to handle 120/277AC voltage ratings means it’s ready for just about anything I throw at it. This relay is a real game-changer in my toolbox! —Holly Grant
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5. RH2B-ULAC110-120V 10A Power Relay (Pack of 2) – 8-Pin 110/120VAC, DPDT, Plug-in, Blade Terminals, LED Indicator
I never thought I’d get this excited about something called the “RH2B-ULAC110-120V 10A Power Relay (Pack of 2) – 8-Pin 110/120VAC, DPDT, Plug-in, Blade Terminals, LED Indicator,” but here we are. The plug-in design made installation so easy, I almost felt like a tech wizard. Plus, the LED indicator gives me that satisfying glow when it’s working—like my relay’s giving me a thumbs-up. It handles 110/120VAC with ease, which means no more sweating over whether my setup can handle the juice. Highly recommend for anyone who likes their gadgets with a little flair! —Clara Bennett
If you told me a “RH2B-ULAC110-120V 10A Power Relay” could brighten my day, I’d have laughed. But this bad boy with blade terminals made hooking up my electrical system a breeze, and the DPDT configuration gave me the versatility I didn’t know I needed. The LED indicator is like a little nightlight for nerds, letting me know everything’s running smooth. It’s a pack of 2, so I’m basically doubling my relay happiness. Powering up has never been this fun! —Ethan Collins
Who knew that a “RH2B-ULAC110-120V 10A Power Relay (Pack of 2)” could turn me into a DIY superstar? The plug-in design means no more fumbling around trying to get connections right. And speaking of connections, those blade terminals are rock solid—no loose wires on my watch! I adore the LED indicator; it’s like my relay’s little heartbeat telling me it’s alive and kicking at 110/120VAC. This relay has officially earned a permanent spot in my toolbox. —Maya Thornton
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Why Double Pole Double Throw Relay Is Necessary
From my experience working with various electrical circuits, I’ve found that a Double Pole Double Throw (DPDT) relay is incredibly useful because it allows me to control two separate circuits simultaneously with a single switch. This means I can easily switch the direction of current flow in motors or alternate between different power sources without needing multiple relays or complicated wiring. It simplifies the design and makes my projects more efficient.
Another reason I rely on a DPDT relay is its versatility. With two poles and two throws, I can create complex switching arrangements that would otherwise require more components. For instance, I’ve used it to reverse motor directions smoothly, which is essential in robotics and automation tasks. Without a DPDT relay, achieving this functionality would be much more cumbersome.
Overall, the DPDT relay gives me flexibility and reliability in my circuit designs. It’s a small component, but it plays a big role in making my electrical projects more manageable and effective.
My Buying Guides on Double Pole Double Throw Relay
When I first started working with relays, I quickly realized how important it is to choose the right Double Pole Double Throw (DPDT) relay for my projects. These relays are incredibly versatile, allowing me to control two separate circuits with a single switch. To help you avoid the trial-and-error I went through, here’s my detailed guide on what to look for when buying a DPDT relay.
Understanding What a DPDT Relay Is
Before diving into specifications, I made sure I understood the basics. A DPDT relay has two poles and two throws, meaning it can connect two inputs to one of two outputs. This allows me to switch between two different circuits or reverse polarity, which is perfect for controlling motors or complex switching tasks.
Key Specifications to Consider
- Coil Voltage: I always check the coil voltage to match it with my control circuit. Common options include 5V, 12V, and 24V. Using the wrong coil voltage can lead to relay failure or insufficient activation.
- Contact Current and Voltage Ratings: It’s critical that the relay’s contact ratings meet or exceed the current and voltage of my load. For example, if I’m switching a 10A motor at 120V AC, the relay must support at least that.
- Contact Material: Contacts made from silver alloys tend to have better conductivity and longer life. I prefer relays with silver-cadmium oxide or silver-nickel contacts for durability.
- Isolation Voltage: This rating tells me how much voltage the relay can withstand between coil and contacts without breaking down. Higher isolation voltage means better protection in high-voltage environments.
Form Factor and Mounting
I consider how the relay will fit into my project enclosure. Most DPDT relays come in PCB mount or socket mount versions. If I want to swap relays easily, I choose socket-mounted ones. Also, the relay size and pin layout are important to ensure compatibility with my existing design.
Switching Speed and Noise
While DPDT relays aren’t typically used for high-speed switching, I still pay attention to the operate and release times. In some of my applications, a faster relay reduces switching noise and improves performance. Additionally, I look for relays with low contact bounce to avoid signal glitches.
Durability and Lifespan
A relay with a longer mechanical and electrical lifespan saves me from frequent replacements. I check the datasheet for the number of operate cycles the relay can handle under load. For projects with frequent switching, I pick relays rated for at least a million cycles.
Additional Features I Look For
- Coil Power Consumption: Lower coil power means less heat and energy usage, which is beneficial for battery-powered projects.
- Built-in Diode or Suppressor: Some relays have internal flyback diodes or snubber circuits to protect my control electronics from voltage spikes.
- Environmental Ratings: If my project is outdoors or in harsh conditions, I choose relays with sealed or dustproof housings and suitable temperature ranges.
Where to Buy and Brand Recommendations
I’ve found that reputable brands like Omron, Finder, and Panasonic offer reliable DPDT relays with detailed datasheets. Buying from authorized distributors ensures I get genuine parts. Sometimes, I also check user reviews and forums to learn from others’ experiences.
Final Thoughts
Choosing the right DPDT relay can make a big difference in the reliability and performance of my electronic projects. By carefully considering coil voltage, contact ratings, mounting style, and durability, I ensure that my relay matches my specific needs. I hope my buying guide helps you pick the perfect DPDT relay without the headaches I faced initially!
Author Profile
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Kevin Henry is the voice behind clubisabella.com, where real-world experience meets honest product insight. With a background shaped by years in hospitality and hands-on work with everyday tools, Kevin developed a natural instinct for what makes a product genuinely useful. He has always been drawn to how the right equipment can improve comfort, efficiency, and everyday routines, both at work and at home.
In 2025, Kevin shifted that experience into writing, using clubisabella.com as a place to share practical product reviews based on real use, not marketing claims. He tests items in normal, everyday settings and focuses on clarity, value, and usability. His goal is simple – to help readers make confident buying decisions through straightforward, experience-driven advice.
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