3SU1132-0AB40-1BA0

1. Overview

The Siemens 3SU1132-0AB40-1BA0 is a 22mm illuminated flush (flat) pushbutton from the SIRIUS ACT 3SU1 family, designed as a complete unit (actuator + contact block + LED module + holder pre-assembled). It features a plastic body with a metal front ring (sand gray, matt finish), a green flat momentary actuator, an integrated 24V AC/DC LED module, 1 Normally Open contact, and screw terminals. It is rated IP66/IP67/IP69K and NEMA 1/2/3/3R/4/4X/12/13, making it suitable for harsh industrial environments.

DATA QUALITY FLAG: The catalog entry uses part number suffix 1BA1, but all 313 research findings reference 1BA0 (the screw-terminal variant). No distributor or Siemens source confirms the existence of a 3SU1132-0AB40-1BA1. The correct Siemens part number is almost certainly 3SU1132-0AB40-1BA0. The slug/catalog entry should be corrected. (The -3BA0 suffix corresponds to the spring-type terminal variant.)

2. User Sentiment

No forum or end-user review sentiment was found in the research findings — all sources are distributor listings and datasheets. The product's long-standing presence across global distributors (Farnell, RS, DigiKey, Viking Electric, Electric Automation Network, Russian and Chinese catalogs) indicates broad adoption in industrial automation. The part is noted as phased out/discontinued in some Siemens sources (SiePortal, Chinese gongkongmall, Siemens Industry Mall USA variant listing), with the 3SU1102-0AB40-1BA0 cited as the successor family. DigiKey, however, still lists it as Active with a 5-week manufacturer lead time.

3. Real-World Applications

The 3SU1132-0AB40-1BA0 is a standard industrial control panel component used in machine tools, conveyor systems, process equipment, and factory automation panels. The 22mm plastic-with-metal-ring format is a classic DIN-panel standard used across European and global industrial OEM equipment. Its IP66/IP67/IP69K rating makes it suitable for washdown environments (food processing, packaging). The green color is conventionally used for start/run functions on control panels, and the 24V AC/DC LED aligns with typical PLC and safety relay supply voltages in industrial installations.

4. Technical Specifications

• Type: Illuminated pushbutton, flush/flat button, momentary contact type — Complete unit (3SU1132 designation = plastic complete unit with integrated LED)
• Brand/Family: Siemens SIRIUS ACT, product line 3SU1
• Color: Green (actuating element)
• Mounting diameter: 22mm panel cutout (actuator outer diameter 29.45mm)
• Body material: Plastic with metal front ring (matt, sand gray)
• Contact configuration: 1 NO (SPST-NO)
• LED voltage: 24V AC/DC (integrated LED module — not a separate bulb)
• Terminal type: Screw terminal (terminal IP20)
• Insulation voltage: 320V rated
• Surge voltage: 4kV
• Pollution degree: 3
• Operating temperature: −25°C to +70°C
• Contact current rating: 10A AC/DC
• Contact voltage rating: 500V AC/DC
• Mechanical life: 3,000,000 cycles
• Electrical life: 10,000,000 cycles
• IP protection: IP66, IP67, IP69K
• NEMA rating: 1, 2, 3, 3R, 4, 4X, 12, 13
• Positive opening: No
• Supplied sub-components: Actuator 3SU1031-0AB40-0AA0, Contact module 3SU1400-1AA10-1BA0, LED module 3SU1401-1BB40-1AA0, Holder 3SU1550-0AA10-0AA0
• Article number (Siemens): A6X30142674 (standard), A6X30142678 (Y15 laser-labeled variant)

5. Ordering & Compatibility

DigiKey lists the unit at approximately $191.32 (USD, single unit) with a 5-week manufacturer lead time, DigiKey PN 3473-3SU11320AB401BA0-ND. Chinese market pricing was approximately ¥440.42. The product is available through RS Components, Farnell, Viking Electric, Electric Automation Network, and surplus via Radwell International. The Siemens Industry Mall lists the successor as the 3SU1102-0AB40-1BA0 family (metal front ring series). Related variants include: 3SU1132-0AB40-3BA0 (spring-type terminal), 3SU1132-0AB40-1FA0 (1NO+1NC contacts), and the -Z X90 (20-unit packaging) and -Z Y10/-Z Y15 (laser labeling) options. For actuator-only replacement, use 3SU1031-0AB40-0AA0; LED module 3SU1401-1BB40-1AA0; contact module 3SU1400-1AA10-1BA0.

6. Known Issues

The primary concern identified in this research is the part number discrepancy: the catalog records the part as 3SU1132-0AB40-1BA1, but this suffix does not correspond to any known Siemens 3SU1 part in the research corpus — every datasheet, distributor listing, and Siemens own Industry Mall page uses 1BA0 for the screw-terminal 1NO variant. Additionally, some Siemens sources (SiePortal, Industry Mall USA) flag the 1BA0 as phased out/no longer available, while DigiKey still lists it Active — this may reflect regional availability or catalog lag. No functional or reliability complaints were found in the research data.