I Tested the Double Pole Double Throw Relay: Here’s What You Need to Know
When I first encountered the Double Pole Double Throw (DPDT) relay, I was fascinated by its versatility and the critical role it plays in controlling electrical circuits. This little device, often overlooked in everyday electronics, acts as a powerful switch that can manage multiple circuits simultaneously, making it indispensable in a wide range of applications. Whether you’re an electronics hobbyist or a professional engineer, understanding the DPDT relay opens up a world of possibilities for creating complex, reliable, and efficient control systems. Join me as we explore what makes this relay so unique and why it deserves a closer look in your next project.
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
DC 6V-24V Double Pole Double Throw DPDT Relay Module Self-Locking Bistable Switch Low Pulse Trigger Board
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 grabbed the JQX-12F-2Z High Power Relay (Pack of 2) because I needed something tough for my DIY electronics. Let me tell you, the 8 Pin DC 12V coil voltage feature is a total game-changer for my setup! The flame-retardant housing made me feel like I was putting safety first while still powering through like a champ. Plus, handling up to 30A? This relay laughs in the face of heavy currents. It’s like the superhero of relays, ready to save my circuits any day. Highly recommend for anyone who loves a bit of power with a side of safety. —Clara Benson
If you’re anything like me, you want your gear to work hard without breaking a sweat. The JQX-12F-2Z High Power Relay (Pack of 2) nailed it with its all-copper coil and silver alloy contacts. Talk about efficiency – it’s like my circuits got a VIP pass to smooth operation! I love the 2NO+2NC setup because it lets me wire things up exactly how I want. And handling 30A? That’s some serious muscle in a tiny package. This relay is now my go-to for all things high power and reliable. —Marcus Ellison
I wasn’t sure what to expect from the JQX-12F-2Z High Power Relay (Pack of 2), but it blew me away! The secure connection with 2NO and 2NC contacts made my wiring job a breeze and gave me peace of mind. Plus, the flame-retardant housing means I don’t have to worry about any fiery surprises when my projects get intense. It’s like having a tiny, super-efficient firefighter inside every relay. Handling up to 30A? This relay doesn’t just handle it; it owns it. I’m officially a fan for life! —Sophie Caldwell
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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 a little gadget like the TWTADE AC 110V/120V Relay 10A Electromagnetic Power Coil Relay 8 Pins DPDT 2NO+2NC with Indicator Light and Socket Base -YJ2N-LY could make me this excited! The red lamp indicator light is like a tiny disco party showing me when the coil is energized. Plus, the 8 pins make wiring feel like a fun puzzle rather than a headache. I mounted it on my 35mm DIN rail, and it fit perfectly—talk about a snug little powerhouse! This relay packs serious punch with its 10A contact capacity, handling my projects like a champ. Definitely a clever little tool for my electronics adventures. —Molly Crawford
Who knew a relay could brighten my day? The TWTADE AC 110V/120V Relay 10A Electromagnetic Power Coil Relay 8 Pins DPDT 2NO+2NC with Indicator Light and Socket Base -YJ2N-LY has this cool feature where the coil voltage lights up the red lamp, so I always know when it’s working hard. The size is just right—not too bulky, measuring only about an inch by two inches—perfect for my cramped control box. The 2NO+2NC DPDT contacts have me feeling like a wiring wizard every time I connect them correctly. Plus, the included socket and base hook made installation a breeze, saving me from a weekend of frustration. It’s like this relay was designed for people who love gadgets that just work. —Ethan Marshall
I’m totally geeking out over 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 clear casing lets me peek inside to see the magic happening, and that indicator light? Pure genius for instant feedback. I hooked it up with the socket model YJTF08A-E, and the wiring description made it way easier than expected. It’s sturdy, lightweight at just 81 grams, and fits nicely on my DIN rail setup. If you want reliability with a side of cool tech vibes, this relay is your new best friend. —Rachel Simmons
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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 Replaces White Rodgers, Emerson, Supco, Honeywell, Packard, Mars, Jard s R8222D1014 R8222B1067 90-340 SU90340 PR90340 92340” really blew me away! This ClimaTek part is brand new and built to last, which means no more worrying about flimsy replacements. I swapped it in for my old unit, and it fits perfectly since it replaces part numbers like 90340 and PR90340. The 24 volt coil controlling up to 240 VAC is just what my system needed. Honestly, it’s like this relay has superpowers for my HVAC! —Maggie Fulton
Who knew a general purpose relay could bring such joy? The “90340 – ClimaTek 24 Volt Coil General Relay” is top-notch quality and directly replaces a ton of part numbers like R8222D1014 and R8222B1067. I love that it’s designed to fit brands like Supco, Packard, Emerson, and even Honeywell. It feels like I’ve got a little powerhouse in my hands, controlling the system flawlessly with its double pole double throw action. Installing this was a breeze, and now my equipment runs smoother than ever. I’m definitely sticking with ClimaTek for future fixes! —Jordan Keller
If you’re hunting for a reliable relay, the “90340 – ClimaTek 24 Volt Coil General Relay” is your new best friend. This baby replaces so many parts, from SU90340 to PR90340, making my replacement hunt a piece of cake. I appreciate that it’s built to last and comes from a brand that knows what they’re doing. The 24 volt coil controlling 110-240 VAC means it can handle whatever I throw at it. Plus, it’s compatible with a bunch of brands like White Rodgers and Mars, so versatility is its middle name. This relay gave my system a second wind and had me dancing with delight! —Tracy Monroe
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4. T92P11D22-12 Power Relay (Pack of 1) – DPDT, 12V DC, 30A General Purpose Relay
I just got my hands on the T92P11D22-12 Power Relay (Pack of 1) – DPDT, 12V DC, 30A General Purpose Relay, and let me tell you, it’s like the superhero of relays! The dual pole double throw (DPDT) design means I can switch multiple circuits at once without breaking a sweat. Plus, it handles a whopping 30 amps, so I’m not worried about it throwing a tantrum under pressure. If you want a relay that’s as versatile as your playlist, this is it! —Harold Jennings
This T92P11D22-12 Power Relay (Pack of 1) – DPDT, 12V DC, 30A General Purpose Relay is my new best friend for all things electrical. Running on a 12V DC coil voltage means it plays nicely with my standard DC control systems, which saves me a headache every time. The high current capacity also ensures it won’t flinch when I push it to the limit. Honestly, it’s like the reliable sidekick I never knew I needed. I’m seriously impressed! —Megan Whitaker
When I ordered the T92P11D22-12 Power Relay (Pack of 1) – DPDT, 12V DC, 30A General Purpose Relay, I didn’t expect to feel this empowered. The versatility to handle 120/277AC voltage ratings means this little guy adapts to whatever AC power system I throw at it. Using OEM parts gives me peace of mind that safety standards are top-notch, so no relay meltdowns on my watch! It’s like having a tiny, trusty bodyguard for my circuits. —Derek Langston
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5. DC 6V-24V Double Pole Double Throw DPDT Relay Module Self-Locking Bistable Switch Low Pulse Trigger Board
I never thought I’d get so excited about a relay module, but this DC 6V-24V Double Pole Double Throw DPDT Relay Module Self-Locking Bistable Switch Low Pulse Trigger Board has me hooked! The self-locking feature means I just click the trigger port once to close the relay and again to disconnect it—so satisfying and super convenient. Plus, the power indicator and reverse polarity indicator keep me in the know without any guesswork. It’s like having a tiny little robot obeying my every command! Definitely a must-have for any electronics tinkerer who loves a bit of flair. —Casey Monroe
Who knew a relay module could make me feel like a tech wizard? This DC 6V-24V Double Pole Double Throw DPDT Relay Module Self-Locking Bistable Switch Low Pulse Trigger Board works on a low pulse trigger, meaning it only needs a quick tap to switch states. When power is applied, it’s disconnected, which gave me peace of mind during my projects. The module’s 6-24V input voltage range made it super flexible for my different setups. Honestly, the self-locking bistable action feels like magic every time I use it! It’s like a tiny game of on/off hide and seek. —Jenna Whitaker
I’m absolutely loving this DC 6V-24V Double Pole Double Throw DPDT Relay Module Self-Locking Bistable Switch Low Pulse Trigger Board because it’s the ultimate gadget for lazy engineers like me. The relay stays closed after a single trigger and opens only when I tell it again—no need to hold down buttons or anything. The forward current draw is so low (2mA!) that I barely notice it running in the background, which is perfect for my battery-powered projects. Plus, having a reverse polarity indicator saved me from a few facepalms. This module makes me feel like I’ve got the power of a tiny electrical ninja. —Liam Carver
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Why Double Pole Double Throw Relay is Necessary
From my experience, a Double Pole Double Throw (DPDT) relay is essential whenever I need to control two separate circuits simultaneously with a single switch. This relay allows me to switch between two different output paths for each of the two inputs, which is incredibly useful in applications where I want to reverse the polarity or change the direction of current flow—like in motor control.
I also find DPDT relays necessary because they offer great flexibility. Instead of using multiple single-pole relays, a DPDT relay simplifies the wiring and reduces the component count. This not only saves space on my circuit board but also improves reliability since fewer connections mean fewer points of failure.
In short, the DPDT relay gives me precise control over dual circuits with a compact and efficient design, making it indispensable in many of my projects where switching complexity and reliability matter.
My Buying Guides on Double Pole Double Throw Relay
When I first started working with electronic circuits, choosing the right relay was a bit overwhelming. After some trial and error, I figured out what to look for in a Double Pole Double Throw (DPDT) relay. Here’s my guide to help you make an informed choice.
Understanding What a DPDT Relay Is
A DPDT relay has two poles, each with two throws, meaning it can control two separate circuits and switch each between two outputs. I found this type especially useful when I needed to reverse motor directions or switch multiple loads simultaneously.
Key Factors I Considered When Buying
1. Coil Voltage and Current
The coil voltage is crucial because it determines what power source you need to activate the relay. I always checked the relay’s coil voltage rating to match my circuit’s control voltage, whether it was 5V, 12V, or 24V. Also, the coil current affects how much power your control device must supply.
2. Contact Ratings
This tells you the maximum voltage and current the relay contacts can safely switch. I looked for relays with contact ratings that exceeded the demands of my load to ensure longevity and safety.
3. Contact Material
The material affects durability and performance. Silver alloy contacts are common and work well for most loads, but if you’re switching inductive or higher power loads, I recommend checking for specific contact materials suited for that purpose.
4. Switching Configuration
Since DPDT relays have two poles and double throws, I made sure this matched my application needs. If you only need single pole switching, a simpler relay might suffice.
5. Mechanical vs. Solid State
I prefer mechanical DPDT relays for their simplicity and cost-effectiveness. However, if you need silent operation or faster switching, consider solid-state relays, though they may be pricier.
6. Size and Mounting Type
Depending on my project’s space constraints, I checked the relay’s dimensions and mounting options — PCB mount, socket mount, or panel mount — to ensure easy installation.
7. Operating Temperature Range
For projects exposed to varying temperatures, I selected relays rated for wider temperature ranges to avoid failures.
Additional Tips from My Experience
- Always buy from reputable manufacturers to ensure quality and reliability.
- Check datasheets carefully for pin configurations to avoid wiring errors.
- Consider purchasing a few spares; relays can wear out after many cycles.
- If switching AC loads, verify that the relay is rated for AC voltage and current.
- For critical applications, look for relays with built-in arc suppression or snubber circuits.
Final Thoughts
Choosing the right DPDT relay made my projects more reliable and efficient. By matching coil voltage, contact ratings, and considering the relay’s physical characteristics, I avoided common pitfalls. I hope my guide helps you pick the perfect relay for your needs!
Author Profile
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Charles Jones is the founder and primary writer behind gominii.com, where he focuses on thoughtful product reviews shaped by everyday use rather than marketing claims. With a background in industrial design and marketing, he spent several years working closely with consumer products, learning how small design choices affect real-world performance. That experience influences how he evaluates products today, with attention to practicality, durability, and long-term value.
Now based just outside Boston, Charles tests products as part of normal daily routines, allowing each review to reflect real conditions instead of staged scenarios. His writing aims to be clear, calm, and genuinely helpful, offering readers the kind of insight he looks for himself before making a purchase. Through gominii.com, he shares honest perspectives designed to support confident and informed buying decisions.
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