Covering motor currents of 62 … 73 A, the Siemens 3RV2032-4KA10 is a 3-pole SIRIUS 3RV2 motor protection circuit breaker, size S2, CLASS 10, with an instantaneous short-circuit release of 949 A. Per Siemens it suits motors of about 37 kW at 400 V and has a rated short-circuit breaking capacity (Icu) of 100 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 | 3RV2032-4KA10 |
|---|---|
| Product | SIRIUS 3RV2 circuit breaker for motor protection |
| Size | S2 |
| Overload release setting range | 62 … 73 A |
| Instantaneous short-circuit release | 949 A |
| Trip class | CLASS 10 |
| Rated current | 73 A |
| Motor power AC-3 at 400 V | 37 kW |
| Motor power AC-3 at 230 V | 22 kW |
| Motor power, 3-phase 460/480 V (UL) | 50 hp |
| Breaking capacity Icu at 400 V | 100 kA |
| Breaking capacity Ics at 400 V | 50 kA |
| Rated operating voltage | 690 V |
| Phase failure sensitivity | Yes |
| Isolating function | Yes |
| Combinable contactor sizes | S2 |
| Power loss (hot, total) | 29.5 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 | 1.164 kg |
| Condition | New, original Siemens |
Typical applications
- Motor branch circuits with full-load currents between 62 … 73 A
- Machine-builder panels where a lockable rotary isolator is required
- Protection of pumps, fans, conveyors and compressors
- Replacement of a tripped or damaged 3RV2 breaker
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). Choose the setting range so that the motor full-load current sits roughly in the middle of the dial; this leaves room for adjustment.
Frequently asked questions
Which contactors can it be combined with?
Per Siemens: contactor sizes S2.
What is the short-circuit breaking capacity?
Per Siemens: Icu 100 kA at 400 V, Ics 50 kA.
At what current does it trip instantly?
The magnetic (N) release responds at 949 A, per Siemens.
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.
Before you order
Compare the complete order number on the old unit with this page, including the suffix: in most ranges the last characters set the coil voltage, current range or version. If the label is worn, send us a photo and we will identify the part.
RendatSP ships from Yiwu, China, to factories worldwide; air delivery usually takes 5 to 7 days once the part is ready. The part is new and original with a 1-year warranty (shipping, payment and warranty). For a quotation, message us on WhatsApp with the order number and quantity. We also have agents in Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.
