Siemens 3RE4122-8CA31-4NF6 Motor Starter
MPN3RE4122-8CA31-4NF6
Non-reversing motor starter, Frame size 0, Three phase full voltage, UL horsepower rating Hp@VAC, 10@208, 10@230, 25@460, 25@575, Bimetal overload relay, Fixed Trip Class 10, OLR amp range 23 - 28, 110/120 V AC 50/60Hz coil, Non-combination type, Enclosure type 3/3R/4/12, Water/dust tight for outdoors, Standard width enclosure, Standards: UL 60947-4-1, Certifications: cULus, Including modifications: 22 mm Hand-Off-Auto Sel. Sw.
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jun 2026
How we verify every order →Specifications
Identification
| Parameter | Value |
|---|---|
| Product designation | Non-reversing motor starter |
Electrical
| Parameter | Value |
|---|---|
| Rated voltage, AC 60 Hz | 120 V |
| Rated voltage, AC 50 Hz | 110 V |
| Rated value at 200/208 V (hp) | 10 hp |
| Rated value at 220/230 V (hp) | 10 hp |
| Rated value at 460/480 V (hp) | 25 hp |
| Rated value at 575/600 V (hp) | 25 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) | 1 |
| Auxiliary contacts, max. total | 8 |
| 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) | 79 VA |
| Coil holding power, AC (apparent) | 8.5 VA |
Timing
| Parameter | Value |
|---|---|
| ON-delay time | 8 ... 40 ms |
| OFF-delay time | 4 ... 16 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 3/3R/4/12 enclosure |
| Housing design / suitability | Dust- & watertight for outdoor use |
| 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) | 12 × 10 × 6 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 |
| Supply terminal tightening torque | 18 ... 21 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
3RE4122-8CA31-4NF6