3SU1130-0AB50-1BA0

1. Overview

The Siemens 3SU1130-0AB50-1BA0 is a complete non-illuminated flush pushbutton unit from the SIRIUS ACT 3SU1 family — Siemens' current-generation 22mm commanding and signalling platform. It features a round blue plastic actuator with a flat (flush) profile, a sand-gray matte metal front ring, and a plastic holder; the electrical contact module (1 NO, screw terminal) is supplied pre-installed and secured by the holder in a snap-on assembly. COLOR CONFIRMED BLUE: every current distributor source (RS Online, Farnell, Conrad, Mouser, Siemens Industry Mall, DigiKey, Voelkner, multiple Turkish price lists) consistently identifies 0AB50 as blue — a separate French SIRIUS ACT catalog snippet showing "blanc" appears to be a different column in a multi-product table and is contradicted by the French Siemens Mall listing ("bleu") and French RS/Farnell entries. The catalog product name ("22mm Blue Flush Push Button 1NO") is correct.

2. User Sentiment

No formal user reviews or forum discussions were found for this specific part number. The product scores 4.77/5 at Voelkner (German retailer), suggesting strong satisfaction among buyers. A Chinese industrial user blog praised the 3SU1 series update, citing IP67 protection, long service life, anti-interference performance, and the "industrial-grade feel" compared to lower-quality alternatives. The snap-on installation system (requiring only one hand and no special tools) is noted positively. No complaints or negative feedback were found across the sources surveyed. SnapMagic explicitly reports "No issues reported."

3. Real-World Applications

The 3SU1130-0AB50-1BA0 is used in industrial control panels, machine tools, conveyor systems, and process automation equipment where momentary NO contact is needed — start/cycle commands being the most common use. The SIRIUS ACT family is rated for maritime applications (BV, LR, PRS, RINA approvals), making it suitable for shipboard control panels. Turkish distributor price lists place it alongside other SIRIUS ACT variants in general industrial switching catalogs, suggesting broad use across manufacturing. NEMA ratings 1, 2, 3, 3R, 4, 4X, 12, 13 cover both indoor and outdoor/harsh-environment enclosures.

4. Technical Specifications

• Type: Complete non-illuminated pushbutton unit, flat (flush) actuator, momentary (NO)
• Color: Blue actuator; sand-gray matte metal front ring
• Mounting diameter: 22.3 mm cutout; actuator outer diameter 29.45 mm
• Contact configuration: 1 NO (SPST-NO), silver alloy contacts
• Terminal: Screw terminal; accepts 0.5–1.5 mm² solid/stranded conductors
• Rated voltage: 5–500 V AC/DC
• Rated thermal current: 10 A
• Insulation voltage: 500 V (rated); 6 kV surge voltage
• IP rating: IP66 / IP67 / IP69K (front); IP20 (rear)
• NEMA: 1, 2, 3, 3R, 4, 4X, 12, 13
• Mechanical life: 10,000,000 operating cycles
• Electrical life: 10,000,000 operating cycles
• Operating temperature: −25 to +70 °C
• Weight: ~61 g
• Country of origin: Germany
• Certifications: CCC, cULus, EAC, CE (EU DoC), UKCA (UK DoC), BV, LR, PRS, RINA
• Functional safety: ISO 13849-1, Type 3 device
• Pollution degree: 3
• Accessories included: Contact module 3SU1400-1AA10-1BA0 (1 NO); holder 3SU1550-0AA10-0AA0; actuator 3SU1030-0AB50-0AA0

5. Ordering & Compatibility

Pricing varies by channel: ~$9.66 USD (automation-warehouse), ~$55.49 (ChipApex), ~$66–$71 (Mouser, single unit), €20.99 (Voelkner Germany), ¥94.88 CNY (SZLCSC China). The part is listed as "no longer available" at DigiKey but available through RS Online, Farnell, Mouser, Conrad, and many specialists. A successor part 3SU1100-0AB50-1BA0 exists (same function, standard plastic — no metal front ring version). Custom-label variants use the -Z Yxx suffix codes (e.g., -Z Y10 through -Z Y19 for laser-labelled variants; -Z X90 for 20-unit packaging). Compatible contact block add-ons: 3SU1400-1AA10-1BA0 (1 NO) and 3SU1400-1AA10-1LA0 (1 NC). The SIRIUS ACT system supports optional IO-Link, PROFINET, and AS-Interface modules for smart factory integration.

6. Known Issues

No significant issues reported. The part is widely available as refurbished/surplus through Lektronix, Classic Automation (2-year warranty), and EU Automation, suggesting reasonable availability in the secondary market. Some DigiKey regions show the item as discontinued/no longer available; the recommended migration is to the 3SU1100-0AB50-1BA0 (plastic body without metal front ring). No field failures, contact reliability concerns, or known quality defects appeared in any scanned source.