SIEMENS
Illuminated pushbutton, 22 mm, round, metal, shiny, red, momentary contact, 1 NC contact, 230 V AC LED, with screw terminals.
Backorder available · Factory lead time 2–3 weeks.
The Siemens 3SU1156-0AB20-1CA0 is a high-quality 22mm illuminated pushbutton designed for reliable industrial and automation applications. With its round, shiny metal design and flat, red pushbutton, it combines functionality with a professional appearance. This momentary contact pushbutton comes with a holder and 1 NC contact, featuring an integrated LED module powered by 230 V AC, ensuring clear visual indication. The screw terminal ensures easy installation and secure connections.
Superior Durability: The shiny metal design provides excellent resistance to harsh industrial environments, ensuring a long service life and high operational reliability.
Clear Visibility: The bright, integrated 230 V AC LED provides clear operational status indication, reducing operator error.
Easy Installation: Features a user-friendly holder and reliable screw terminals for quick and secure wiring and mounting.
Industry Standard: Part of the global SIRIUS ACT portfolio, guaranteeing compatibility and modularity with other Siemens control devices.
High Contrast HMI: The distinct red illumination is ideal for STOP/Emergency signaling (when combined with appropriate safety circuitry) or critical process control functions.
Illuminated pushbutton for industrial control applications
Round 22 mm metal design, shiny red finish
Flat, momentary action pushbutton
Comes with holder and 1 NC contact
Integrated LED module (230 V AC)
Screw terminal for secure and reliable connections
Ideal for control panels, machinery, and automation systems
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| SKU / Model | 3SU1156-0AB20-1CA0 |
|---|---|
| Brand | SIEMENS |
| product brand name | SIRIUS ACT |
| product designation | Illuminated pushbuttons |
| design of the product | Complete unit |
| product type designation | 3SU1 |
| product line | Metal, shiny, 22 mm |
| manufacturer's article number | - |
| ● of supplied contact module at position 1 | 3SU1400-1AA10-1CA0 |
| ● of supplied LED module | 3SU1401-1BF20-1AA0 |
| ● of the supplied holder | 3SU1550-0AA10-0AA0 |
| ● of the supplied actuator | 3SU1051-0AB20-0AA0 |
| number of command points | 1 |
| design of the actuating element | Button, flat |
| principle of operation of the actuating element | momentary contact type |
| product extension optional light source | Yes |
| color of the actuating element | red |
| material of the actuating element | plastic |
| shape of the actuating element | round |
| outer diameter of the actuating element | 29.45 mm |
| marking of the actuating element | Customized labeling, text in lower case / capital letters, all words start with capital letters |
| number of contact modules | 1 |
| product component front ring | Yes |
| design of the front ring | Standard |
| material of the front ring | Metal, high gloss |
| color of the front ring | silver |
| material of the holder | Plastic |
| number of LED modules | 1 |
| product function positive opening | Yes |
| product component light source | Yes |
| insulation voltage rated value | 320 V |
| degree of pollution | 3 |
| type of voltage of the operating voltage | AC/DC |
| surge voltage resistance rated value | 4 kV |
| protection class IP | IP66, IP67, IP69(IP69K) |
| ● of the terminal | IP20 |
| degree of protection NEMA rating | 1, 2, 3, 3R, 4, 4X, 12, 13 |
| shock resistance | - |
| ● acc. to IEC 60068-2-27 | Sinusoidal half-wave 50g / 11 ms |
| vibration resistance | - |
| ● acc. to IEC 60068-2-6 | 10 ... 500 Hz: 5g |
| operating frequency maximum | 3 600 1/h |
| mechanical service life (switching cycles) typical | 3 000 000 |
| electrical endurance (switching cycles) typical | 10 000 000 |
| thermal current | 10 A |
| reference code acc. to IEC 81346-2 | S |
| continuous current of the C characteristic MCB | 10 A; for a short-circuit current smaller than 400 A |
| continuous current of the quick DIAZED fuse link | 10 A |
| continuous current of the DIAZED fuse link gG | 10 A |
| operating voltage | - |
| ● at AC | - |
| — at 50 Hz rated value | 5 ... 500 V |
| — at 60 Hz rated value | 5 ... 500 V |
| ● at DC rated value | 5 ... 500 V |
| contact reliability | One maloperation per 100 million (17 V, 5 mA), one maloperation per 10 million (5 V, 1 mA) |
| type of voltage of the supply voltage of the light source | AC |
| supply voltage of the light source at AC | - |
| ● at 50 Hz rated value | 230 V |
| ● at 60 Hz rated value | 230 V |
| inrush current of LED module maximum | 3 A |
| design of the contact of auxiliary contacts | Silver alloy |
| number of NC contacts for auxiliary contacts | 1 |
| number of NO contacts for auxiliary contacts | 0 |
| type of electrical connection | screw-type terminals |
| type of connectable conductor cross-sections | - |
| ● solid with core end processing | 2x (0.5 ... 0.75 mm²) |
| ● solid without core end processing | 2x (1.0 ... 1.5 mm²) |
| ● finely stranded with core end processing | 2x (0.5 ... 1.5 mm²) |
| ● finely stranded without core end processing | 2x (1,0 ... 1,5 mm²) |
| ● at AWG cables | 2x (18 ... 14) |
| tightening torque of the screws in the bracket | 1 ... 1.2 N·m |
| tightening torque with screw-type terminals | 0.8 ... 0.9 N·m |
| type of light source | LED |
| color of the light source | red |
| light intensity | 450 ... 1 120 mcd |
| ambient temperature | - |
| ● during operation | -25 ... +70 °C |
| ● during storage | -40 ... +80 °C |
| environmental category during operation acc. to IEC 60721 | 3M6, 3S2, 3B2, 3K6 (with relative air humidity of 10 ... 95 %, no condensation in operation permitted for all devices behind front panel) |
| fastening method | front panel mounting |
| ● of modules and accessories | Front plate mounting |
| shape of the installation opening | round |
| mounting diameter | 22.3 mm |
| positive tolerance of installation diameter | 0.4 mm |
| mounting height | 11 mm |
| installation width | 29.5 mm |
| installation depth | 49.7 mm |
| last modified: | 10/1/2021 |
| Weight | 0.098 kg |
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