Siemens 3RE4121-5AA11-1HB0
MPN3RE4121-5AA11-1HB0
Non-reversing motor starter, Frame size 00, Three phase full voltage, UL horsepower rating Hp@VAC, 1.5@208, 2@230, 3@460, 5@575, Bimetal overload relay, Fixed Trip Class 10, OLR amp range 5.5 - 8, 24 V AC 50/60HZ coil, Non-combination type, Enclosure NEMA type 1, Indoor general purpose use, Standard width enclosure, Standards: UL 60947-4-1, Certifications: cULus With modifications: 22 mm Start-Stop push buttons
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jun 2026
Specifications
Identification
| Parameter | Value |
|---|---|
| Product designation | Non-reversing motor starter |
Electrical
| Parameter | Value |
|---|---|
| Rated voltage, AC 60 Hz | 24 V |
| Rated voltage, AC 50 Hz | 24 V |
| Rated value at 200/208 V (hp) | 1.5 hp |
| Rated value at 220/230 V (hp) | 2 hp |
| Rated value at 460/480 V (hp) | 3 hp |
| Rated value at 575/600 V (hp) | 5 hp |
| Operating voltage for main current circuit at AC at 60 Hz maximum | 600 V |
| Design Of The Short-Circuit Trip | Thermal magnetic circuit breaker |
Contacts & Poles
| Parameter | Value |
|---|---|
| Main circuit poles | 3 |
| Main NO contacts (count) | 3 |
| Auxiliary NO contacts (count) | 1 |
| Auxiliary NC contacts (count) | 0 |
| Auxiliary contacts, max. total | 6 |
| Overload relay auxiliary NC contacts (count) | 1 |
Coil
| Parameter | Value |
|---|---|
| Control supply voltage type | AC |
| Coil operating range factor (× rated) | 0.8 ... 1.1 |
| Coil pick-up power, AC (apparent) | 26.4 VA |
| Coil holding power, AC (apparent) | 4.4 VA |
Timing
| Parameter | Value |
|---|---|
| ON-delay time | 9 ... 35 ms |
| OFF-delay time | 3.5 ... 14 ms |
Approvals & Protection
| Parameter | Value |
|---|---|
| Overload protection | Yes |
| Reset function | Manual, automatic and remote (with optional accessory) |
| External reset | Yes |
| Test function | Yes |
| Auxiliary contact rating, contactor (UL) | 10A@600V(A600), 2.5A@600V(Q600) |
| Auxiliary contact rating, overload relay (UL) | 5A@600VAC (B600), 1A@250VDC (R300) |
| Required short-circuit protection fuse | Class J |
| Touch protection against electrical shock | NA for enclosed products |
Environmental
| Parameter | Value |
|---|---|
| Enclosure NEMA rating | NEMA 1 standard size enclosure |
| Housing design / suitability | indoors, usable on a general basis |
| Max. installation altitude | 6 560 ft |
| Max. permissible conductor temp, supply | 60 °C |
| Max. permissible conductor temp, load-side feeder | 60 °C |
| Max. permissible conductor temp, coil | 75 °C |
| Max. permissible conductor temp, auxiliary contacts (contactor) | 75 °C |
Connection & Mechanical
| Parameter | Value |
|---|---|
| Dimensions (H × W × D) | 11 × 7 × 5 in |
| Mounting position | vertical |
| Fastening / mounting method | Surface mounting and installation |
| Line-side terminal connection type | Screw-type terminals |
| Load-side terminal connection type | Screw-type terminals |
| Coil terminal connection type | Screw-type terminals |
| Connectable conductor, line-side (AWG) | 2x (20 ... 16), 2x (18 ... 14), 2x 12 |
| Connectable conductor, load-side feeder (AWG) | 2x (20 ... 16), 2x (18 ... 14), 2x 12 |
| Connectable conductor, coil (AWG) | 2x (20 ... 16), 2x (18 ... 14), 2x 12 |
| Supply terminal tightening torque | 7 ... 10 lbf·in |
| Conductor material, supply | CU |
| Conductor material, load-side feeder | CU |
| Conductor material, coil | CU |
| Conductor material, auxiliary contacts (contactor) | CU |
| Conductor material, auxiliary contacts (overload relay) | CU |
MPN
3RE4121-5AA11-1HB0