Siemens SIRIUS 3RF24 20 A 3-phase solid-state switching device: 3-phase, with integrated heat sink, ready to use, zero-point switching. For contactless, silent and wear-free switching of three-phase heating loads.
Technical data
| Series | 3RF24 |
|---|---|
| Product type | 3-phase, with integrated heat sink, ready to use, zero-point switching |
| Type current | 20 A |
| Line voltage | 48–600 V AC |
| Control | 2-phase or 3-phase controlled (by article number) |
| Control voltage | 110 V AC, 230 V AC, 4–30 V DC |
| Connection | Screw, Spring-loaded |
| Typical use | 3-phase resistive heaters, furnace heating groups |
Article numbers
| Type current | Control | Control voltage | Connection | Article No. |
|---|---|---|---|---|
| 20 A | 2-phase controlled | 4–30 V DC | Screw | 3RF2420-1AB45 |
| 20 A | 2-phase controlled | 110 V AC | Screw | 3RF2420-1AB35 |
| 20 A | 2-phase controlled | 230 V AC | Screw | 3RF2420-1AB55 |
| 20 A | 3-phase controlled | 4–30 V DC | Screw | 3RF2420-1AC45 |
| 20 A | 3-phase controlled | 110 V AC | Screw | 3RF2420-1AC35 |
| 20 A | 3-phase controlled | 230 V AC | Screw | 3RF2420-1AC55 |
| 20 A | 2-phase controlled | 4–30 V DC | Spring-loaded | 3RF2420-2AB45 |
| 20 A | 2-phase controlled | 230 V AC | Spring-loaded | 3RF2420-2AB55 |
| 20 A | 3-phase controlled | 4–30 V DC | Spring-loaded | 3RF2420-2AC45 |
| 20 A | 3-phase controlled | 230 V AC | Spring-loaded | 3RF2420-2AC55 |
The type current indicates the performance capacity; the actual permitted operational current may be lower depending on connection and cooling conditions.
Technical data and article numbers are based on Siemens catalog IC 10 · 2026 (chapter 6, solid-state switching devices) and are for information only. Image is representative.
For price, stock and lead time, use the Request a Quote button or call +90 533 945 27 94. Sending the article number is enough.
Tags: 3RF24 20 A, siemens ssr, 3-phase ssr, solid-state contactor, 3RF24, 3RF2420-1AB45, 3RF2420-1AB35, 3RF2420-1AB55, 3RF2420-1AC45, 3RF2420-1AC35, 3RF2420-1AC55, 3RF2420-2AB45, 3RF2420-2AB55, 3RF2420-2AC45, 3RF2420-2AC55