Siemens 3RV1021-4AA10 Motor Protection Circuit Breaker: Comprehensive Technical Guide
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Two Siemens SIRIUS 3RV1021-4AA10 motor protection circuit breakers are documented in this delivery record. The front current dial and carton both identify an 11–16 A adjustment range. The supply entry dated 9 March 2026 describes new stock with packaging and a one-year warranty.
Identification and delivery details
Both units appear in separate opened cartons, each labelled Qty 1. Their fronts carry the complete 3RV1021-4AA10 reference, a rotary ON/OFF handle, a TEST opening, CLASS 10 marking and a 208 A instantaneous-trip marking. The adjustment range is 11–16 A; the 208 A number is not a continuous motor-current rating.
The clear side table gives Icu / Ics values of 50 / 25 kA at 400 V and 4 / 2 kA at 690 V. These voltage-specific rows must stay together. The opposite label describes North American application conditions and combinations with other devices; its conditional short-circuit ratings are not an unrestricted rating for every installation.
A fitted front auxiliary block reads 3RV5901-1E, with 21/22 NC and 13/14 NO markings. Terminal views show three main line/load paths, while the rear photograph shows the mounting clip. Made in Germany is visible on the unit side label as well as the cartons. Carton creases and minor surface marks are visible; the new condition and warranty are supplier-record statements, and no trip-test result is included.
| Item | Evidence |
|---|---|
| Identity | Siemens SIRIUS 3RV1021-4AA10 |
| Current adjustment | 11–16 A |
| Front trip markings | CLASS 10; 208 A instantaneous-trip marking |
| 400 V side-table row | Icu 50 kA; Ics 25 kA |
| 690 V side-table row | Icu 4 kA; Ics 2 kA |
| Impulse withstand marking | Uimp 6 kV |
| Auxiliary block photographed | 3RV5901-1E; 21/22 NC and 13/14 NO |
| Origin wording | Made in Germany on unit and carton |
| Quantity / condition | Two; new with packaging according to supply entry |
| Warranty / date / record weight | One year; 9 March 2026; 0.5 kg field |
Swipe or scroll horizontally to read the full table.
Ratings are transcribed from the photographed dial and side table. The two cartons support the recorded two-piece quantity. Conditional ratings on the opposite approval label require their stated installation conditions; no test or coordination study is supplied here.
Matching this part
Match 3RV1021-4AA10, the motor full-load current and the required 11–16 A adjustment range. Provide supply voltage and prospective fault current so that the appropriate interruption and coordination conditions can be checked.
Confirm auxiliary-contact requirements, terminals and mounting space against the photographed 3RV5901-1E block. Request the relevant acceptance checks for the stock offered.
Photos and recorded media
Recorded inspection clip. The clip is retained as delivery evidence; no performance measurement is inferred from it.
Related records and products
The Siemens 3RT1036-1AB00 contactor record covers a separate switching device. A starter combination needs its own motor-current and protection-coordination check. Contact KOEED with your motor and supply details.
Request this part
Send the complete breaker reference, motor current, supply voltage and quantity. Confirm auxiliary contacts, condition and the one-year warranty for the offered stock.
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Send us the part number or article link — we will confirm price, availability and lead time.
