steve
Got hold of Sime for a Carrier card for…
Got hold of Sime for a Carrier card for a chiller. Machine down in a factory. Received the new card in express time machine and plant now up and running fantastic service form Sime
1 month ago
3SE7120-2DD01-1AS7
Siemens 3SE7120-2DD01-1AS7 available at EU Automation. Get in touch today for a quick price.
Based on over 4900 reviews
Full 12-month warranty
Available for dispatch immediately
We deliver worldwide
What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
All orders are subject to product availability. See our T&Cs.
Ask our team
What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
The Siemens 3SE7120-2DD01-1AS7 is a SIRIUS 3SE7 cable-operated switch designed for reliable position and pull-wire actuation over a 5 m cable length. It features a robust painted metal enclosure with an IP65 protection rating and operates in ambient temperatures from -25 to +70 °C, making it well suited to demanding industrial environments.
This model provides 1 NO and 1 NC contact arrangement with jump (snap) switching action, silver contacts, and screw-type terminals for solid or finely stranded conductors from 0.5 to 2.5 mm² (AWG 20 to 14). The unit includes two M20 x 1.5 cable entries and offers a spring force of 100 N with a maximum actuating force of 160 N. Electrical ratings include a 400 V insulation voltage and AC-15 operational current up to 6 A at 240 V or 400 V. Compact dimensions (172 mm height, 53 mm width, 43 mm depth) support straightforward screw fixing in control panels and machinery installations.
This model provides 1 NO and 1 NC contact arrangement with jump (snap) switching action, silver contacts, and screw-type terminals for solid or finely stranded conductors from 0.5 to 2.5 mm² (AWG 20 to 14). The unit includes two M20 x 1.5 cable entries and offers a spring force of 100 N with a maximum actuating force of 160 N. Electrical ratings include a 400 V insulation voltage and AC-15 operational current up to 6 A at 240 V or 400 V. Compact dimensions (172 mm height, 53 mm width, 43 mm depth) support straightforward screw fixing in control panels and machinery installations.
| Specification | Description |
|---|---|
| Manufacturer | Siemens |
| Manufacturer Part Number | 3SE7120-2DD01-1AS7 |
| Alternative Part Number | 3SE71202DD011AS7 |
| Product Range | SIRIUS |
| Product Type | Cable-operated switch (Bowden cable type) |
| Cable Length | 5 m |
| Latching | Without latching |
| Actuation Function | Cable pull operation only |
| Spring Force | 100 N |
| Maximum Actuating Force | 160 N |
| Contact Configuration | 1 NO + 1 NC |
| Contact Material | Silver |
| Switching Principle | Snap-action (jump function) |
| Rated Insulation Voltage (Ui) | 400 V |
| Rated Impulse Withstand Voltage (Uimp) | 6 kV |
| Thermal Current (Ith) | 6 A |
| Utilisation Category | AC-15: 6 A at 240 V; 6 A at 400 V |
| Degree of Pollution | Class 3 |
| Ingress Protection | IP65 |
| Operating Temperature | -25 to +70 °C |
| Mechanical Service Life | Typical 1,000,000 operating cycles |
| Enclosure Material | Metal |
| Cover Material | Plastic |
| Enclosure Finish | Painted |
| Colour | Enclosure: black; top part: grey |
| Cable Entry | 2 × M20 × 1.5 |
| Electrical Connection | Screw-type terminals |
| Connectable Conductor Size | 2 × (0.5 to 2.5 mm²) solid; 2 × (0.5 to 2.5 mm²) finely stranded with ferrule |
| Connectable Conductor Size (AWG) | 2 × (20 to 14) solid; 2 × (20 to 14) stranded |
| Mounting Method | Screw fixing |
| Dimensions (H × W × D) | 172 mm × 53 mm × 43 mm |
| Emergency Stop Function | No |
| RoHS Compliance Date | 01/07/2006 |
What is a cable-operated switch used for?
A cable-operated switch is used to detect and signal a pull on a connected cable along a machine or conveyor line, allowing a remote pull action to change electrical contacts for control circuit signalling.
What cable length is this switch designed for?
It is designed for a 5 m cable length, making it suitable for shorter zones or individual machine sections where a pull-cable input is required.
Does this unit include an emergency stop function?
No. The device is specified without an EMERGENCY STOP function; it is intended for cable pull actuation to operate its contacts in a control circuit.
Does the switch latch after it has been actuated?
No. It is supplied without latching (non-latching operation) and provides only the Bowden cable function, returning according to the mechanical design rather than staying mechanically latched.
What contact configuration does it provide?
It provides 1 NO (normally open) contact and 1 NC (normally closed) contact for flexible use in signalling and interlock-style control logic.
What is the maximum actuating force and spring force?
The spring force is 100 N and the maximum actuating force is 160 N.
What is the enclosure material and ingress protection rating?
It has a metal enclosure with a plastic cover and is rated IP65, helping protect against dust ingress and water jets in typical industrial environments.
What cable entry threads are provided?
It features 2 cable entries sized M20 x 1.5, allowing straightforward connection of suitable cable glands.
What are the electrical ratings for control duties?
For AC-15 duty it is rated at 6 A at 240 V and 6 A at 400 V. The thermal current is 6 A, and the rated insulation voltage is 400 V.
What wire sizes can be connected to the terminals?
It uses screw-type terminals and accepts solid or finely stranded conductors from 0.5 to 2.5 mm² (AWG 20 to 14), with up to 2 conductors per terminal as specified.
What operating temperature range is supported?
The specified ambient temperature during operation is -25 to +70 °C.
What are the overall dimensions for installation planning?
The unit is approximately 172 mm high, 53 mm wide, and 43 mm deep, and is designed for screw fixing.
What mechanical life can be expected under typical conditions?
The typical mechanical service life is 1,000,000 operating cycles, depending on application conditions and correct installation. (Reference: Siemens 3SE7120-2DD01-1AS7 data.)
- Rope/cable-pull monitoring along conveyor runs to provide a line-wide stop signal from multiple access points
- Pull-cord actuation on packaging and palletising lines where operators need a quick, distributed stop request along the machine perimeter
- Emergency pull-wire stations on assembly and transfer lines to enable rapid intervention without reaching a local control panel
- Cable-actuated shutdown input for industrial doors, guards, and access zones where a mechanical pull wire is preferred over pushbuttons
- Process equipment stop signalling around mixers, feeders, and handling systems where the actuation point must be extended over distance (up to 5 m)
- Integration into control cabinets as a rugged, IP65-rated field switch for harsh plant environments using standard M20 cable entries
- Retrofit and replacement in existing Siemens SIRIUS cable-operated switch installations requiring a 1 NO + 1 NC contact arrangement without latching
This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Delivery
- Logistic partners UPS, FedEx and DHL
- International delivery available
- Premium nine hour delivery service available to anywhere in Europe
- Same day dispatch from group stock
Warranty
All parts new or reconditioned are covered by EU Automation 12 month warranty
Returns
No hassle returns policy
Dedicated customer support team
Payment
Trade CreditWe understand that credit is a necessary part of business and offer credit agreements on request, subject to status.
Payment optionsWe accept Bank transfers and the following methods of payment:
All transactions are handled securely by HSBC and HSBC Merchant Services. For more information, please visit our dedicated payments page.
Services
Sourcing your part
Global supplier of quality automation and control components
Service Exchange
Dispose of your old unit by exchanging it for a working part.
Repair
A comprehensive repair service for faulty equipment.
Customer reviews
steve
Daniel
Excellent customer service...
Alex Bailey is my main point of contact at EU Automation...he is extremely friendly, has exceptional customer service skills and always offers great pricing & lead times.
3 months ago
Jerry Schrink
Tom Higgins provided amazing service
Tom Higgins provided great prompt service. I contacted Tom by phone and within 10 minutes there was a quote in my in box. WOW Thank you Tom and Thank you EU Automation!
3 months ago
Paulo Pereira
Excellent service and communication…
Excellent service and communication from Alex Bailey. He truly goes above and beyond to ensure his clients are 100% satisfied. The entire process was seamless, and his attention to detail made a huge difference. Highly recommended for anyone looking for amazing service!
3 months ago
Gary
Tom Higgins did a great job at getting…
Tom Higgins did a great job at getting us the part we needed. He saw a concern with the part a verified before shipping.
3 months ago
Lessle Smith
Thomas Higgins has gone above and…
Thomas Higgins has gone above and beyond to make things happen for my facility. His customer service and knowledge were an asset in helping me with my order and the logistics challenges!
4 months ago
Our world, made possible by manufacturing. Manufacturing made possible by EU Automation.
Discover how we do our part to keep your production lines moving.