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After exploring an incredibly huge number of articles and reviews by our smart AI & Machine Learning systems; and detailed reprocessing, breakdown and rectification by our competent high-technology gurus, the golden shortlist for the Best Solid State Relays (2021) is ultimately drafted.

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In order to find the Best Solid State Relays (2021), our powerful platforms and gurus have taken many criteria into account such as product fitness for use, user-friendly features and give buyer satisfaction, defect and deficiency-free, standards conformance, affordability, dependability, quality of design, quality conformance to needs and good practises, protection and safety, actual user satisfaction and numerous others. It is of great importance to note that each user has different requirements so please consider the benchmarking below as a guideline and not as a gospel. In any case, in the below list you can certainly find the overall best ones regardless of your needs.

Our intelligent platforms and competent tech experts work hard to provide you with the best product options. We believe that our review evaluation can help you simplify your purchase decision and select among the absolute Best Solid State Relays (2021).

Best Solid State Relays

Best Choice No. 1
6PCS SSR-40DA Solid State Relay Single Phase Semi-Conductor Relay Input 3-32V DC Output 24-380V AC
6PCS SSR-40DA Solid State Relay Single Phase Semi-Conductor Relay Input 3-32V DC Output 24-380V AC
  • Product name: solid state module relay SSR-40DA, 3-32VDC/24-380VAC.
  • SSR Application: with a switch no spark, no noise,high switching speed,anti-corrosion,moisture-proof,anti-vibration,long life.high reliability,electromagnetic compatibility and other characteristics.
  • Solid state relay ideal for automatic process control application, a must component for temperature controller and other machinery control system.
  • Especially suitable for corrosion, moisture, dust, and other harsh environments, and frequent switching the occasion, AC contactor is updated alternative.
  • High reliabily, compact size, a great part for temperature controller and other machinery control system.
$29.99
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Best Choice No. 2
SainSmart 8-Channel 5V Solid State Relay Module Board for Arduino Uno Duemilanove MEGA2560 MEGA1280 ARM DSP PIC
SainSmart 8-Channel 5V Solid State Relay Module Board for Arduino Uno Duemilanove MEGA2560 MEGA1280 ARM DSP PIC
  • Has been assembled, and electrical test passed.
  • Led indicator for each relay.
  • FR-4 Fiber glass PCB (Double Layer); Size: 155 x 55 x 24 mm (approximately 6.1 x 2.17 x 0.95 inch)
  • Input control signal voltage: 0V – 0.5V Low stage (SSR is OFF), 0.5V – 2.5V (unknown state), 2.5V – 20V High state (SSR is ON); SSR Output (each channel); Load voltage range: 75 to 264VAC (50/60Hz); Load current: 0.1 to 2 AMP
  • Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic)
$19.99
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Best Choice No. 3
CG Solid State Relay SSR-25DA DC to AC Input 3-32VDC To Output 24-480VAC 25A Single Phase Plastic Cover
CG Solid State Relay SSR-25DA DC to AC Input 3-32VDC To Output 24-480VAC 25A Single Phase Plastic Cover
  • ♥【What You Get】Each package With 2 mini bag of thermal grease which apply on the back of the SSR to make the temperature dissipate faster.
  • ♥ Product Name: solid state module relay SSR-25DA, 3-32VDC/24-480VAC ; Current & Frequency:25A,50/60Hz.
  • ♥ Total size (approximate):58 x 45 x 32mm/2.3″ x 1.8″ x 1.26″ (l*w*t); Net weight:116g; Material:metal, plastic, electronic parts.
  • ♥ SSR Application: with a switch no spark, no noise,high switching speed,anti-corrosion,moisture-proof,anti-vibration,long life.high reliability,electromagnetic compatibility and other characteristics.
  • ♥ Solid state relay ideal for automatic process control application, a must component for temperature controller and other machinery control system.
$9.90
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Best Choice No. 4
CG Solid State Relay SSR-25DD DC to DC Input 3-32VDC To Output 5-240VDC 25A Single Phase Plastic Cover
CG Solid State Relay SSR-25DD DC to DC Input 3-32VDC To Output 5-240VDC 25A Single Phase Plastic Cover
  • ♥【What You Get】Each package With 2 mini bag of thermal grease which apply on the back of the SSR to make the temperature dissipate faster.
  • ♥ Product Name: solid state module relay SSR-25DD, 3-32VDC/5-220VDC ; Current & Frequency:25A,50/60Hz.
  • ♥ Total size (approximate):58 x 45 x 32mm/2.3″ x 1.8″ x 1.26″ (l*w*t); Net weight:116g; Material:metal, plastic, electronic parts.
  • ♥ SSR Application: with a switch no spark, no noise,high switching speed,anti-corrosion,moisture-proof,anti-vibration,long life.high reliability,electromagnetic compatibility and other characteristics.
  • ♥ Solid state relay ideal for automatic process control application, a must component for temperature controller and other machinery control system.
$9.90
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Best Choice No. 5
Twidec/Output Single Phase SSR Solid State Relay 25A 3-32V DC to 24-480V AC SSR-25DA
Twidec/Output Single Phase SSR Solid State Relay 25A 3-32V DC to 24-480V AC SSR-25DA
  • Product name : solid state relay; Model No.: SSR-25DA；If you want to reach 25A, you need to add a large heat sink and fan
  • Current : 25A;Frequency : 50/60Hz; output Voltage : 24-480vac；Special attention:This relay cannot be used for more than 10A for a long time.If that actual use current exceeds 15A，It is necessary to separately configure the heat sink.
  • Control Voltage : 3-32vdc; mounting hole diameter : 4.5Mm/0.18″
  • Total size (approximate) : 58 x 45 x 32Mm/2.3″ x 1.8″ x 1.26″ (l*w*t); material : metal, plastic, electronic parts
  • Net weight : 80G; Package Content : 1 x solid state relay
$10.66
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Best Choice No. 6
CG Solid State Relay SSR-40AA AC to AC Input 70-250VAC to Output 24-480VAC 40A Single Phase Plastic Cove
CG Solid State Relay SSR-40AA AC to AC Input 70-250VAC to Output 24-480VAC 40A Single Phase Plastic Cove
  • ♥【What You Get】Each package With 2 mini bag of thermal grease which apply on the back of the SSR to make the temperature dissipate faster.
  • ♥ Product Name: solid state module relay SSR-40AA, 70-250VAC/24-480VAC ; Current & Frequency:25A,50/60Hz.
  • ♥ Total size (approximate):58 x 45 x 32mm/2.3″ x 1.8″ x 1.26″ (l*w*t); Net weight:116g; Material:metal, plastic, electronic parts.
  • ♥ SSR Application: with a switch no spark, no noise,high switching speed,anti-corrosion,moisture-proof,anti-vibration,long life.high reliability,electromagnetic compatibility and other characteristics.
  • ♥ Solid state relay ideal for automatic process control application, a must component for temperature controller and other machinery control system.
$8.89
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Best Choice No. 7
uxcell BEM-14840DA 3-32V DC to 24-480V AC 40A Output Single Phase SSR Solid State Relay
uxcell BEM-14840DA 3-32V DC to 24-480V AC 40A Output Single Phase SSR Solid State Relay
  • Product Name: Solid State Relay; Model No. : BEM-14840DA
  • Current & Frequency : 40A, 50/60Hz; Output Voltage : 24-480VAC
  • Control Voltage : 3-32VDC; Mounting Hole Diameter : 4.5mm / 0.18″
  • Total Size (Approx.) : 58 x 45 x 32mm / 2.3″ x 1.8″ x 1.26″ (L*W*T)
  • Net Weight : 116g; Package Content : 1 x Solid State Relay
$12.29
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Best Choice No. 8
SSR-40DA Solid State Relay DC to AC (Input 3-32V DC Output 24-380V AC) with Heat Sink, 40A
SSR-40DA Solid State Relay DC to AC (Input 3-32V DC Output 24-380V AC) with Heat Sink, 40A
  • Model: SSR-40DA, single phase Solid State Relay 40A DC to AC control, UL Approved, CE Compliant to EN60950-1
  • Input voltage 3-32V DC, Load voltage 24-380V AC, Max load current 40 Amp
  • Rugged epoxy encapsulation construction, high isolation over than 50MΩ(500VDC), high dielectric over than 2.5KV, output snubber circuit protection
  • No EMI/EFI & Low surge by Zero Cross Trigger method, specially suited to control sensitive, capacitive and Non-saturated inductive loads
  • SSR switches use semiconductor component acts as a switch for the relay, no moving parts inside, no mechanical wear, no action noise, no mechanical failure, and high reliability
$11.99
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Best Choice No. 9
HiLetgo 2pcs SSR-25DA 25A 250V Solid State Relay Module
HiLetgo 2pcs SSR-25DA 25A 250V Solid State Relay Module
  • SSR-25DA 25A 250V Solid State Relay Alloy Heat Sink
  • Model: SSR-25DA
  • Input voltage: 3-32V DC
  • Output voltage: 24-380V AC
  • Control Method: DC to AC
$9.29
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Best Choice No. 10
Inkbird Solid State Relay 40DA DC SSR Black Heat Sink for PID Thermostat Temperature Controller
Inkbird Solid State Relay 40DA DC SSR Black Heat Sink for PID Thermostat Temperature Controller
  • 40A Solid State Relay Specifications:Load Voltage: 24-380VAC
  • Load Current: 40A
  • Input Voltage: DC 3-32V
  • Heat Sink Mounting Thread Diameter (Approx.) : 0.5cm / 0.19″
  • Heat Sink Total Size (Approx.) : 8 x 4.9 x 4.9cm / 3.1″ x 1.9″ x 1.9″ (L * W * T )
$14.99
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