LCTC Three Phase Solid State Relay
- Fast switching speed and sensitive response.
- No mechanical contacts, no electric arc, long service life.
- Optocoupler isolation with vibration and shock resistance.
- Semiconductor control, noiseless switching.
- High withstand voltage and strong surge capability.
- CE-Certified Durability.
Product Overview & Applications:
This three-phase solid-state relay is specifically designed for three-phase heating equipment and is compatible with heating elements constructed from a variety of materials, including metal, ceramics, and PTFE (Polytetrafluoroethylene).
This solid-state relay integrates seamlessly with PID temperature controllers and heating units to facilitate the precise temperature regulation required within thermal control systems.
This three-phase solid-state relay supports two control modes: Zero-Crossing Triggering and Random Turn-on. For heating applications, the Zero-Crossing mode is generally preferred as it facilitates noise-free operation; conversely, the Random Turn-on mode offers the advantages of faster response speeds and higher control precision.
Given the relay’s high rated current, we also offer a comprehensive range of complementary accessories—including heat sinks, cooling fans, over-temperature protectors, and terminal blocks—to effectively extend the relay’s service life. It is crucial to note that for such high-power solid-state relays, the implementation of forced-air cooling measures is absolutely essential.
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.
Models explanation:
1. LC: Enterprise Code
2. TH: Product Series Code (three phase solid state relay )
3. 480: Load Voltage 24–480 VAC
4. 40: Load Current 10/25/40/60/80/100/120/150/200A
5. DA: DC Control AC / AA: AC Control AC
Technical Parameters
Product Specifications | ||
| Model: | LCTH480口DA | LCTH480口AA |
| Control： | DC Control AC | AC Control AC |
| Load Current： | 10A/25A/40A/60A/80A/100A/120A/150A/200A | |
| Control Voltage： | 3-32VDC | 70–280VAC |
| Max Input Current： | 40mA | 15mA |
| Must Operation Voltage： | 3VDC | 70VAC |
| Must Release Voltage： | 2.7VDC | 50VAC |
| Output Voltage： | 24–480VAC | |
| Peak Voltage： | 800V | |
| Operation Temperature： | -30°C to 80°C | |
| Max Off-State Leakage Current： | 2mA | |
| Max On-state Voltage Drop： | 1.5V | |
| Dielectric Strength： | 2500V | |
| Certificates： | CE | |
| Dimensions： | 105 × 74 × 33 mm | |
| Net Weight： | 400g | |
Choose A Correct Control Model
AA: AC Control AC Input：AC70-280V Load：AC24-480V
Choose A Correct Type for Current
For Resistive load: Current of SSR =3 x working current of load
Resistive load such as resistance furnace, incandescent lamp, oven, heating rod, electric water heater.
For Inductive load: Current of SSR =6 x working current of load
Inductive load such as motor, fan, transformer, pump, air conditioner and other loads with inductives.
For Capacitive load: Current of SSR =10 x working current of load
Capacitive load such as compensating capactitors, batteries and other loads with capacitors.
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.
Note: The radiator needs to be purchased separately!
Attentions
1: SSR cannot be tested without load, and it must be added load of more than 50W to test.
2: Use fast fuse(70% Amp of rated SSR) to protect SSR from load short circuit.
3: Zero-cross Or Random turn-on.
The default is zero cross SSR.
Wiring Diagram
