High Current Solid State Relay
- Low power consumption and high surge capability.
- It is capable of efficiently handling high-current loads.
- This solid-state relay generates extremely low heat.
- Optocoupler isolation with vibration and shock resistance.
- Semiconductor control for noise-free switching.
- No mechanical contacts or arcing, ensuring long service life.
Product Overview & Applications:
Solid State Relay (SSR) products utilize SCRs or MOSFETs to achieve precise and rapid control over loads. The control circuitry is optically coupled and isolated from the load, offering high dielectric strength to provide protective isolation for upstream control components.
Solid-state relays have gained widespread adoption and application across various fields, including hazardous and explosion-proof environments, lighting control systems, electromechanical automation control, and medical equipment.
Model Description:
1. LC ：Design code
2. 500 ：Load current rating 500/1000A
3. D75D ：load voltage 75 VDC
Technical Parameters
Product Specifications | ||
| Model: | LC-500D75D | LC-1000D75D |
| Surge Current： | 500A | 1000A |
| Control Voltage Range： | 3-32VDC | |
| Load Max Voltage： | 75VDC | |
| Max Input Current： | 18mA | 36mA |
| Must Operation Voltage： | 3VDC | |
| Must Release Voltage： | 2VDC | |
| Max On-State Voltage Drop： | <0.02VDC | |
| Max Off-State Leakage Current： | 2mA | |
| Response Time： | ≤20ms | |
| Dielectric Strength： | 2500VAC | |
| Operating Temperature： | -20°C to 80°C | |
| Dimensions (mm)： | 105×74×53 | |
| Net Weight： | 450g | |
| Max Off-State Leakage Current： | <1uA | |
Choose A Correct Type for Current
1.For Resistive Loads: SSR Rated Current = 3 × Load Operating Current
Resistive loads include resistance furnaces, incandescent lamps, ovens, heating elements, electric water heaters, etc.
2.For Inductive Loads: SSR Rated Current = 6 × Load Operating Current
Inductive loads include motors, fans, transformers, water pumps, air conditioners, and other loads exhibiting inductive characteristics.
3.For Capacitive Loads: SSR Rated Current = 10 × Load Operating Current
Capacitive loads include compensation capacitors, batteries, and other loads exhibiting capacitive characteristics.
Choose A Suitable Heat Sink
1.When SSR is working, it will give out a lot of heat, so in order to extend the life of your SSR, please install a heat sink.
2.Don’t forget to apply heat-conductive silicon grease between SSR and heat sink.
Precautions
1. Use a fast-acting fuse to protect the solid-state relay against load short circuits.
2. During operation, the temperature of the heat sink must remain below 75°C.
3. For inductive loads, it is recommended to use a varistor.
4.If you wish to perform a test, you need to connect a load to the solid-state relay.
Wiring Diagram
