LRSSR-14DA2405 AC Output Solid State Relay
The LRSSR-14DA2405 is a compact solid state relay with an aluminum housing and thyristor output for switching AC loads. It features a non-polarized 5–24 VDC control input, optocoupler isolation and a red LED operating indicator.
- Output type: AC / Thyristor
- Load voltage range: 12–240 VAC
- Load current range: 0.13–5 A
- Control input: 5–24 VDC, non-polarized
- Control current: 9–13 mA, constant current
- Housing: Aluminum
Select this model for AC loads. Apply the load-current safety factors and temperature derating specified in the datasheet.
Package Options
Relay Only: Includes 1 relay. Socket not included.
Relay with Socket: Includes 1 relay and 1 matching socket.
View the LRSSR-14DD0612 — DC Output, 12A, 2–60VDC .
| Parameter | LRSSR-14DA2405 | LRSSR-14DD0612 |
|---|---|---|
| MODEL DIFFERENCES | ||
| Output type | AC / Thyristor | DC / MOSFET |
| Load voltage range | 12–240 VAC | 2–60 VDC |
| Load current range | 0.13–5 A | 0.01–12 A |
| On/off indicator | Red LED | Green LED |
| Turn-on / turn-off time | 1/2 AC cycle | ≤ 0.2 ms |
| Peak withstand voltage | 480 VAC | 72 VDC |
| Non-repetitive peak withstand current | 50 A (within 8 ms) | 100 A (within 5 ms) |
| On-state characteristic | Voltage drop: max. 1.2 V | Resistance: max. 5 mΩ |
| Load current safety factor — resistive load | 80% of Ie | 100% of Ie |
| Load current safety factor — inductive load | 25% of Ie | 50% of Ie |
| Load current safety factor — other composite loads | 50% of Ie | 60% of Ie |
| SHARED PARAMETERS — BOTH MODELS | ||
| Control voltage | 5–24 VDC | |
| Control input polarity | Non-polarized | |
| Guaranteed turn-on voltage | 4 VDC | |
| Guaranteed turn-off voltage | 1.8 VDC | |
| Control current | 9–13 mA (constant current) | |
| Input/output isolation | Optocoupler isolation | |
| Dielectric strength | Approx. 2500 VAC, 50 Hz (input to output) | |
| Housing | Aluminum | |
| Ambient temperature | −20°C to +80°C | |
| Product weight | Approx. 41 g | |
| Input and output specifications are stated at Ta = 25°C. Ie = rated load current. Apply temperature derating according to the datasheet curve. | ||
Frequently Asked Questions
1. Which model should I choose?
Choose LRSSR-14DA2405 for AC loads within 12–240 VAC and 0.13–5 A, or LRSSR-14DD0612 for DC loads within 2–60 VDC and 0.01–12 A. Apply the load-current safety factors and temperature derating specified in the datasheet.
2. Does the control input require a specific polarity?
No. Both models use a non-polarized 5–24 VDC control input at terminals 1 and 5. This applies only to the control input. For LRSSR-14DD0612, follow the DC output polarity markings: terminal 3 (+) and terminal 4 (−), and connect the load as shown in the wiring diagram.
3. Is derating required at high ambient temperatures?
Yes. Follow the switching-current versus ambient-temperature curve for the selected model. Also observe the datasheet load-current safety factors and provide sufficient installation clearance and ventilation.