The Siemens 3RV2031-4WA10 is a SIRIUS 3RV2 motor starter protector (circuit breaker for motor protection) in size S2, with a thermal overload release adjustable from 42 … 52 A and a magnetic short-circuit release at 741 A. Per Siemens it suits motors of about 22 kW at 400 V and has a rated short-circuit breaking capacity (Icu) of 65 kA at 400 V.
Set the overload dial to the full-load current on the motor rating plate. If the breaker trips repeatedly, check the motor, the mechanical load and the supply phases before raising the setting.
See more Siemens industrial controls, including SIRIUS 3RT2 contactors of the same size.
Technical data
| Siemens order number | 3RV2031-4WA10 |
|---|---|
| Product | SIRIUS 3RV2 circuit breaker for motor protection |
| Size | S2 |
| Overload release setting range | 42 … 52 A |
| Instantaneous short-circuit release | 741 A |
| Trip class | CLASS 10 |
| Rated current | 52 A |
| Motor power AC-3 at 400 V | 22 kW |
| Motor power AC-3 at 230 V | 15 kW |
| Motor power, 3-phase 460/480 V (UL) | 40 hp |
| Breaking capacity Icu at 400 V | 65 kA |
| Breaking capacity Ics at 400 V | 30 kA |
| Rated operating voltage | 690 V |
| Phase failure sensitivity | Yes |
| Isolating function | Yes |
| Combinable contactor sizes | S2 |
| Power loss (hot, total) | 24.5 W |
| Degree of protection (front) | IP20 |
| Ambient temperature (operation) | -20 … +60 °C |
| Mounting | screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715 |
| Dimensions (W x H x D) | 55 x 140 x 149 mm |
| Net weight | 1.163 kg |
| Condition | New, original Siemens |
Typical applications
- Machine-builder panels where a lockable rotary isolator is required
- Replacement of a tripped or damaged 3RV2 breaker
- Transformer and control circuit protection where a motor-type characteristic is acceptable
- Fuseless motor starters with SIRIUS 3RT2 contactors
Compatibility and replacement
Auxiliary switches for status feedback can be added on the front (transverse, for example 3RV2901-1E) or on the left side (3RV2901-1A). The older 3RV10 series has been replaced by the 3RV20; send us the old order number and we will confirm the matching setting range.
Frequently asked questions
Does it include auxiliary contacts?
No. This version has no auxiliary contacts installed; add a 3RV2901 auxiliary switch if you need feedback to the PLC.
What is the short-circuit breaking capacity?
Per Siemens: Icu 65 kA at 400 V, Ics 30 kA.
Which contactors can it be combined with?
Per Siemens: contactor sizes S2.
Do you ship to my country, and what is the warranty?
Yes. RendatSP ships worldwide from Yiwu, China, by air in 5 to 7 days once the part is ready, and every part carries a 1-year warranty. Send the order number and quantity on WhatsApp and we will reply with a quotation.
Ordering tips
Send us the full order number from the label of the old part, or a clear photo of the label, together with the quantity you need. We check the number against the current manufacturer data before we quote and tell you if there is a newer replacement.
Need it fast? Send the order number, quantity and delivery country on WhatsApp or through the inquiry form and we reply with a quotation the same working day. All parts are new and original, covered by a 1-year warranty, and ship worldwide by air in 5 to 7 days once ready (shipping, payment and warranty). Local agents: Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.
