The Siemens 3TH42 is a 8-pole contactor relay for control circuits that need many contacts. Available with 230/220 V AC or 24 V DC coil and various NO/NC combinations, with screw terminals.
Technical data
| Number of poles | 8 |
|---|---|
| Mounting | Screw or snap-on mounting on TH35 DIN rail |
| Terminals | Screw |
| Rated operational current Ie/AC-15 | 230 V: 10 A · 400 V: 6 A · 500 V: 4 A · 690 V: 2 A |
| Coil | 230/220 V AC 50 Hz or 24 V DC |
| Coil operating range (220 V) | 0.85–1.1 × Uc |
| Spare coils | AC: 3TY7403-0A.. · DC: 3TY4803-0B.. (on request) |
| Note | Contacts cannot be replaced |
Article numbers
| Contacts | Additional contacts | Coil | Article No. |
|---|---|---|---|
| 8 NO + 0 NC | – | 230/220 V AC (50 Hz) | 3TH4280-0AP0 |
| 7 NO + 1 NC | – | 230/220 V AC (50 Hz) | 3TH4271-0AP0 |
| 6 NO + 2 NC | – | 230/220 V AC (50 Hz) | 3TH4262-0AP0 |
| 5 NO + 3 NC | – | 230/220 V AC (50 Hz) | 3TH4253-0AP0 |
| 4 NO + 4 NC | – | 230/220 V AC (50 Hz) | 3TH4244-0AP0 |
| 3 NO + 3 NC | 1 NO + 1 NC | 230/220 V AC (50 Hz) | 3TH4293-0AP0 |
| 8 NO + 0 NC | – | 24 V DC | 3TH4280-0BB4 |
| 7 NO + 1 NC | – | 24 V DC | 3TH4271-0BB4 |
| 6 NO + 2 NC | – | 24 V DC | 3TH4262-0BB4 |
| 5 NO + 3 NC | – | 24 V DC | 3TH4253-0BB4 |
| 4 NO + 4 NC | – | 24 V DC | 3TH4244-0BB4 |
| 3 NO + 3 NC | 1 NO + 1 NC | 24 V DC | 3TH4293-0BB4 |
Technical data and article numbers are based on Siemens catalog IC 10 · 2026 (chapter 5, contactor relays and relays) 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: 3TH42, siemens contactor relay, auxiliary contactor, 3TH4, 3TH4280-0AP0, 3TH4271-0AP0, 3TH4262-0AP0, 3TH4253-0AP0, 3TH4244-0AP0, 3TH4293-0AP0, 3TH4280-0BB4, 3TH4271-0BB4, 3TH4262-0BB4, 3TH4253-0BB4, 3TH4244-0BB4, 3TH4293-0BB4