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LIMIT SWITCH
Available
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2 Year MRO warranty
| Part Number | 3SE03-SA |
| Manufacturer | Siemens |
| Type | Switches |
| Model # | 3SE03SA |
| MRO Warranty | 2 Year |
| Product Type | Limit Switch Plug-In Module |
| Contact Configuration | 1 NO & 1 NC (SPDT) |
| Contact Rating | 10 A @ 600 VAC / 1 A @ 300 VDC |
| Voltage Rating | 600 VAC / 300 VDC |
| Connection Type | 5-Pin Receptacle / SPDT |
| Enclosure Type | NEMA 1, 3, 3S, 4, 4X, 6, 6P, 11, 12, 13 / IP66 |
| Operating Temperature | -10°C to +94°C (14°F to 250°F) |
| Material | Die-cast zinc / epoxy coated |
| Mounting Type | Threaded / Plug-in |
| Actuator Options (varies by head) | Side rotary, plunger, roller comes separately (modular head styles) |
| Mechanical Life | Up to 10×10⁶ operations (varies by style) |
| Electrical Life | Up to 1×10⁶ operations typical |
| Ratings & Approval | UL Listed, CSA Certified |
MRO Electric repairs CNCs, PLCs, Servo/Spindle Drives, Motors, Amplifiers, VFDs, HMIs, and more, most of which can be repaired in only 3-5 days.
MRO can restore your failed 3SE03-SA to remanufactured condition and save you up to 75% compared to buying new. We offer standard repair pricing to ensure you the best value for your repair.
Our certified technicians use rigorous testing procedures to ensure your parts are restored to fully functioning condition. Our team proudly stands behind all repairs by providing a minimum 2-year MRO warranty.
Our technicians have vast experience with most manufacturers and models. In addition to this 3SE03-SA we also repair a wide range of other Siemens products, so if you don’t see the model you need, please contact us.
If you are interested in getting credit for your faulty 3SE03-SA, just let us know, and we can issue you an RMA to send it in as an exchange. Our exchange program provides you with savings and keeps us stocked for the next time you need anything.
Want it shipped today?
Ask about exchanging your faulty 3SE03-SA for credit when ordering from MRO Electric
The Siemens 3SE03-SA is a heavy-duty limit switch plug-in module engineered for reliable position sensing and control in demanding industrial environments. Part of Siemens’ trusted 3SE series, this module features a 1 normally open (NO) and 1 normally closed (NC) contact configuration (SPDT), making it ideal for both control and safety-related applications. Its rugged construction, long service life, and modular design make it a dependable solution for automation systems requiring precise and repeatable switching performance.
The 3SE03-SA limit switch module offers strong electrical ratings, supporting up to 10 A at 600 VAC and 1 A at 300 VDC. This allows it to handle a wide range of industrial control circuits, from low-voltage signaling to higher-power control loads. The SPDT contact configuration provides operational flexibility, enabling integration into start/stop circuits, interlocks, and monitoring systems where both NO and NC contacts are required.
Built with a die-cast zinc housing and epoxy coating, the Siemens 3SE03-SA is designed to withstand harsh operating conditions. It carries multiple enclosure ratings, including NEMA 1, 3, 3S, 4, 4X, 6, 6P, 11, 12, and 13, as well as IP66, ensuring protection against dust, moisture, and washdown environments. With an operating temperature range of -10°C to +94°C (14°F to 250°F), this module performs reliably in both standard and elevated temperature industrial settings.
The plug-in, threaded mounting design allows for quick installation and easy replacement, reducing downtime during maintenance. The 3SE03-SA supports modular actuator heads, including side rotary, plunger, and roller styles (sold separately), giving users flexibility to tailor the switch to specific mechanical requirements. This modularity makes the switch suitable for a wide range of machinery and automation layouts.
Designed for longevity, the Siemens 3SE03-SA delivers a mechanical life of up to 10 million operations and a typical electrical life of up to 1 million operations, depending on actuator style and load conditions. It is UL Listed and CSA Certified, meeting recognized safety and quality standards for industrial use.
MRO Electric offers the Siemens 3SE03-SA with a 2-year warranty, ensuring confidence and reliability. With immediate availability, fast shipping, and expert technical support, MRO Electric is a trusted source for Siemens industrial switches and automation components.
What is the Siemens 3SE03-SA used for?
It is used for position detection and control in industrial automation systems.
What contact configuration does this module have?
It features 1 NO and 1 NC contact (SPDT).
What are the electrical ratings?
10 A at 600 VAC and 1 A at 300 VDC.
Is this a complete limit switch?
No, it is a plug-in module; actuator heads are sold separately.
What enclosure ratings does it support?
NEMA 1, 3, 3S, 4, 4X, 6, 6P, 11, 12, 13 and IP66.
What is the operating temperature range?
-10°C to +94°C (14°F to 250°F).
How is the module mounted?
It uses a threaded, plug-in mounting design.
What is the expected service life?
Up to 10 million mechanical operations and 1 million electrical operations.
Is this module certified?
Yes, it is UL Listed and CSA Certified.
What warranty is included from MRO Electric?
It includes a 2-year MRO Electric warranty.
Siemens products are manufactured in Germany and are designed for Automotive, aerospace, power generation, and electronics usage. They come with a 2-year MRO warranty from MRO Electric. We also carry Switches from other manufacturers such as FANUC and Yaskawa.
Check out the rest of our Siemens product line. Whether it's using our online instant quote feature, giving us a call at (800) 691-8511, or emailing us at sales@mroelectric.com, we strive for customer satisfaction first. This means lower prices and better service for you. For more products like 3SE03-SA, take a look at more from our Switches line. If your current unit has gone bad, take advantage of our Core Exchange program for the most inexpensive route. You can learn more about this program on our FAQ page here. We offer a repair service on all of our 3SE03-SA products that keep your downtime to a minimum. To stay up to date on manufacturer news, as well as access any of our datasheets, manuals, or other documentation, we suggest you take a look at our blog.
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