SSR 40DD DC Control DC Solid State Relay Introduction:
- This product is our 40A DC to DC solid state relay, its control voltage is 3-32 VDC, load voltage is 5-220 VDC.
- It is mainly used to control DC loads, such as DC heaters, DC motors, DC pumps, and other products powered by DC power supplies.
- Its maximum load current can reach 40 amps, which means we can use it to control resistive loads up to 4000 W at 220 VDC or 1000 W motor at 220 VDC. The calculation formula is maximum load wattage = maximum load voltage * maximum current / 2 or 7(divided by 2 for calculating resistive load, divided by 7 for calculating inductive or capacitive load)..
- The SSR-40DD control section and load section are isolated by optocoupler, ensuring that users can safely operate DC heavy loads with safe, low DC power.
- Our this DC solid state relay features high stability and long lifespan, generally we ensure this product can be used for at least for 5 years without any problem.
- If you want to know its wiring diagram, please read this article “How To Wire A Solid State Relay?” written by our professional team.
- Another thing that needs attention is heat dissipation. Good heat dissipation can effectively extend the service life of solid-state relays. Therefore, in order to use this product for a longer period of time, please use it with our W-70 radiator.
- If you still have questions about this solid state relay product, such as price or technical aspects, please leave a message via the form below.
Typical Application:
Specifications:
| Mode | SSR 40DD |
| Control voltage | 3-32 VDC |
| Max control current | 40 mA |
| Switch-on voltage | 3 VDC |
| Switch off voltage | 2 VDC |
| Load voltage | 5-220 VDC |
| Peak load voltage | 250 VDC |
| Load current | 40 A |
| Max off-state leakage current | 2 mA |
| Max on-state voltage drop | ≤1 VDC |
| Product dimension | 44.8*57.4*28 mm |
| Net weight | 100 g |
| Dielectric strength(input to output) | 4000 V |
| Dielectric strength(input to output to base) | 2500 V |
| Operating temperature | -30℃~80℃ |
| Certification | CE |
| Terminals | Screw |
| Remark | When using this SSR, please consider using a suitable heat sink to help cool it, otherwise high temperatures exceeding 80 degrees Celsius will cause permanent damage to this SSR. |
