Set the dial of the Siemens 3RV2031-4XA10 anywhere between 49 … 59 A: this size S2 SIRIUS 3RV2 circuit breaker protects the motor against overload (CLASS 10) and trips instantly at 845 A on a short circuit. Per Siemens it suits motors of about 30 kW at 400 V and has a rated short-circuit breaking capacity (Icu) of 65 kA at 400 V.<\/p>\n
A motor starter protector combines three functions in one device: short-circuit protection, overload protection with phase-failure sensitivity, and manual on\/off isolation with a rotary handle. Together with a contactor it forms a complete fuseless motor starter.<\/p>\n
| Siemens order number<\/th>\n | 3RV2031-4XA10<\/td>\n<\/tr>\n |
|---|---|
| Product<\/th>\n | SIRIUS 3RV2 circuit breaker for motor protection<\/td>\n<\/tr>\n |
| Size<\/th>\n | S2<\/td>\n<\/tr>\n |
| Overload release setting range<\/th>\n | 49 … 59 A<\/td>\n<\/tr>\n |
| Instantaneous short-circuit release<\/th>\n | 845 A<\/td>\n<\/tr>\n |
| Trip class<\/th>\n | CLASS 10<\/td>\n<\/tr>\n |
| Rated current<\/th>\n | 59 A<\/td>\n<\/tr>\n |
| Motor power AC-3 at 400 V<\/th>\n | 30 kW<\/td>\n<\/tr>\n |
| Motor power AC-3 at 230 V<\/th>\n | 15 kW<\/td>\n<\/tr>\n |
| Motor power, 3-phase 460\/480 V (UL)<\/th>\n | 40 hp<\/td>\n<\/tr>\n |
| Breaking capacity Icu at 400 V<\/th>\n | 65 kA<\/td>\n<\/tr>\n |
| Breaking capacity Ics at 400 V<\/th>\n | 30 kA<\/td>\n<\/tr>\n |
| Rated operating voltage<\/th>\n | 690 V<\/td>\n<\/tr>\n |
| Phase failure sensitivity<\/th>\n | Yes<\/td>\n<\/tr>\n |
| Isolating function<\/th>\n | Yes<\/td>\n<\/tr>\n |
| Combinable contactor sizes<\/th>\n | S2<\/td>\n<\/tr>\n |
| Power loss (hot, total)<\/th>\n | 26 W<\/td>\n<\/tr>\n |
| Degree of protection (front)<\/th>\n | IP20<\/td>\n<\/tr>\n |
| Ambient temperature (operation)<\/th>\n | -20 … +60 \u00b0C<\/td>\n<\/tr>\n |
| Mounting<\/th>\n | screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715<\/td>\n<\/tr>\n |
| Dimensions (W x H x D)<\/th>\n | 55 x 140 x 149 mm<\/td>\n<\/tr>\n |
| Net weight<\/th>\n | 1.185 kg<\/td>\n<\/tr>\n |
| Condition<\/th>\n | New, original Siemens<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nTypical applications<\/h3>\nCompatibility and replacement<\/h3>\nAuxiliary switches for status feedback can be added on the front (transverse, for example 3RV2901-1E) or on the left side (3RV2901-1A). For a complete starter combine it with a size S2 3RT2 contactor using the matching Siemens link module.<\/p>\n Frequently asked questions<\/h3>\n |
Yes, the rotary handle can be locked in the OFF position with a padlock, which is required for safe maintenance in many plants.<\/p>\n
The overload release is adjustable from 49 … 59 A. Set it to the rated current shown on the motor nameplate.<\/p>\n
Per Siemens: contactor sizes S2.<\/p>\n
Prices are quoted on request. Send the order number, quantity and delivery country on WhatsApp and we will reply with price and delivery time; air shipping is usually 5 to 7 days once ready, with a 1-year warranty.<\/p>\n
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.<\/p>\n