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Key Features and Specifications:
- Control Method: DC (3-32V DC) Input to AC Load (typically 24-480V AC or 70-280V AC).
- Current Ratings: Commonly available from 10A, 25A, 40A up to 120A, 200A.
- Switching Type: Usually zero-crossing trigger for low noise, ideal for heating elements.
- Applications: Suited for resistive loads (heaters) and inductive loads (motors).
- Protection: Often includes built-in RC snubber circuits and LED indicators.
- Design: Compact panel-mount design.
Selection and Safety Guidelines:
- Load Ratios: Select an SSR with a current rating 2~3 times the actual resistive load current, or 7~8 times for inductive loads.
- Heat Dissipation: For loads exceeding 10A, a heat sink is required. For higher current models (e.g., >60A), a cooling fan is highly recommended to prevent premature failure.
- Mounting: Ensure thermal grease is applied between the SSR and the metal heat sink.
Example Models:
- SSR-60DA / SSR-100DA: Common 3-phase, 3-32VDC to 24-480VAC modules.
- Three Phase DC Input AC Load SSR for Resistive Load (MS-3AA48): Specialized models are available through distributors like Maxwell-fa.com.
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ATO Solid State Relay, 3 Phase, SSR-120AA, 120A 70- ...
Amazon.com
https://www.amazon.com › SSR-120AA-70-280V-Zero...
Amazon.com
https://www.amazon.com › SSR-120AA-70-280V-Zero...
LCLCTC 3 Phase Solid State Relay SSR-100DA DC to AC (Input 3-32VDC to Output 24-480VAC) (DC to AC 100A).Read more
Solid state relay, 3 phase, SSR-60DA, 60A 3-32V DC to AC
ATO.com
https://www.ato.com › ... › Relays › Solid State Relays
ATO.com
https://www.ato.com › ... › Relays › Solid State Relays
60A 3-phase solid state relay (SSR) with 3-32V DC input and 24-480V AC output features compact size, high structural strength, good impact resistance, and ...Read more
$104.62In stockFree delivery30-day returns
Three phase DC input AC load SSR for resistive load
Maxwell-fa.com
https://www.maxwell-fa.com › three-phase-dc-input-ac-l...
Maxwell-fa.com
https://www.maxwell-fa.com › three-phase-dc-input-ac-l...
The SCR-6 Series is a high-performance, three-phase intelligent digital power regulator designed for precise control of resistive loads in industrial heating ...Read more
Solid State Relays with AC or DC Control Inputs | Omega
DwyerOmega
https://www.dwyeromega.com › ... › Relays
DwyerOmega
https://www.dwyeromega.com › ... › Relays
Three-phase loads can be controlled using 2 or 3 SSRs. Use 3 SSRs for "Y" or ... If a DC input SSR is selected it will activate with a 24 VDC signal to ...Read more
$46.57 to $166.00In stock$25 delivery90-day returns
Solid State Relay SSR AC Three DC ...
eBay
https://www.ebay.com › ... › Relays › Solid State Relays
eBay
https://www.ebay.com › ... › Relays › Solid State Relays
Solid State Relay SSR AC Three DC-AC Three Phase SSR 3-32V Control 24-480V Kits ; Quantity. 10 available ; Item number. 226688937748 ; Brand. Unbranded ; Accurate ...Read more
3 Phase Solid State Relay 100 Amp, DC To AC, SSR-100DA
lorentzzi.com
https://lorentzzi.com › ... › Three Phase Solid State Relay
lorentzzi.com
https://lorentzzi.com › ... › Three Phase Solid State Relay
3-32 VDC. Maximum input current, 40 mA. Switch-on voltage, 3 VDC. Release voltage, 2 VDC. Load voltage, 24-480 VAC. Load current, 100 A. Peak voltage, 800 VAC.Read more
SSP3A225BD - three phase relay, Harmony Solid State ...
Schneider Electric
https://www.se.com › ... › Harmony Solid State Relays
Schneider Electric
https://www.se.com › ... › Harmony Solid State Relays
Jun 10, 2025 — three phase relay, Harmony Solid State Relays, 25A, panel mount, zero voltage switching, input 4 to 32V DC, output 48 to 530V AC · SSP3A225BD.Read more
Three Phase Solid State Relays ABSTRACT
Newark Electronics
https://www.newark.com › techarticles › crydom
Newark Electronics
https://www.newark.com › techarticles › crydom
PDF
Most AC output SSRs will have an average on-state forward voltage drop of between 1.0 and. 1.2 volts. The effect of this voltage drop is that 1 to 1.2 watts of ...Read more
3 Phase DC-AC SSR Solid State Relay
ATO Relays
https://www.atorelays.com › 3-phase-dc-ac-ssr
ATO Relays
https://www.atorelays.com › 3-phase-dc-ac-ssr
DC to AC three phase solid state relay is a non-contact switch composed of microelectronic circuits, discrete electronic devices, and power electronic power ...Read more
3 Phase DC To AC SSR
unisoncontrols.com
https://www.unisoncontrols.com › MODEL 905 - 3PH
unisoncontrols.com
https://www.unisoncontrols.com › MODEL 905 - 3PH
25 Amp 3 Phase DC to AC Solid State Relay, 3 Phase SSR, Zero cross over SSR, Opto isolation SSR, Panel mounted SSR, Din rail mounted SSR, 3PH SSR, Static ...Read more
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