3SU1130-0AB40-1BA0

1. Overview

The Siemens 3SU1130-0AB40-1BA0 is a complete push button unit from the SIRIUS ACT (3SU1) command-and-signaling device family. It is a non-illuminated, 22mm round push button featuring a green flat actuator, plastic body with a metal front ring, momentary (spring-return) action, and a 1NO (normally open) contact block with screw terminal — all supplied as a ready-to-install complete assembly including the holder. The "complete unit" designation means the actuator head, holder, and contact module are pre-assembled, simplifying installation compared to ordering components separately. It is designed for front-panel mounting in industrial control enclosures and machine control stations.

SIRIUS ACT is Siemens' flagship modular command-and-signaling platform, combining elegant design aesthetics with industrial-grade toughness. The 3SU1130 sub-family covers non-illuminated complete units in the 22mm form factor, available in multiple colors, contact configurations, and terminal types.

2. User Sentiment

User and distributor feedback on the SIRIUS ACT line is consistently positive. The product is praised for its robust build quality combining genuine metal front rings with high-grade plastics, making it suitable for demanding environments. The snap-on modular concept — allowing single-handed installation without special tools — is frequently highlighted as a practical advantage for panel builders. Contact reliability is industry-leading: the 3SU1 contact blocks achieve 1 malfunction per 100 million operations at 17V/5mA, significantly better than many competitors. The comprehensive certification portfolio (UL, CE, CCC, CSA, EAC) supports global deployment without additional qualification hurdles. The SIRIUS ACT range is widely regarded as a premium but cost-justified choice for professional industrial automation applications.

3. Real-World Applications

The 3SU1130-0AB40-1BA0 is used across a broad range of industrial control applications where a green momentary pushbutton is required:

• Machine start/run commands: Green push buttons are the standard IEC/NFPA color for "start" or "safe/go" functions, making this the default choice for machine start panels.
• Conveyor and production line control: Start buttons on conveyor systems, assembly lines, and packaging machinery.
• Food and beverage processing: The IP66/IP67/IP69K-rated enclosure withstands high-pressure washdowns and cleaning agents, a key requirement in food-safe environments.
• Harsh industrial environments: Resistance to oils, caustic solutions, dust ingress, and extreme temperatures (-25°C to +70°C) suits chemical plants, outdoor enclosures, and foundries.
• ATEX-compatible installations: The 3SU1 system is ATEX-certified, enabling use in potentially explosive atmospheres when combined with appropriate barriers.
• OEM machine builders: The modular design and wide color/contact portfolio makes SIRIUS ACT a standard platform for OEMs building standardized control panels across product lines.

4. Technical Specifications

• Type: Non-illuminated complete push button unit (actuator + holder + 1NO contact block)
• Series: Siemens SIRIUS ACT 3SU1, sub-family 3SU1130
• Actuator color: Green
• Actuator style: Flat (flush)
• Actuator material: Plastic with metal front ring
• Action: Momentary, spring-return
• Contact configuration: 1NO (SPST-NO)
• Terminal type: Screw terminal (suffix 1BA0)
• Rated voltage: 5V–500V AC/DC
• Rated current: 10A
• Insulation voltage: 320V
• Surge voltage: 4kV
• Mounting diameter: 22.3mm (22mm nominal)
• IP rating: IP66, IP67, IP69K (front face); IP20 (terminal side)
• NEMA rating: NEMA 1, 2, 3, 4, 4X, 12, 13
• Operating temperature: -25°C to +70°C
• Mechanical life: 10,000,000 switching cycles
• Electrical endurance: 10,000,000 cycles
• Max switching frequency: 3,600 cycles/hour
• Contact reliability: 1 fault per 100,000,000 operations (17V, 5mA)
• Certifications: CE, UL, CSA, CCC, EAC, RoHS compliant, REACH SVHC compliant
• Installation: Snap-on concept, single-handed, tool-free
• Country of origin: Germany

5. Ordering & Compatibility

The 3SU1130-0AB40-1BA0 is a complete unit — it includes the actuator, holder, and contact block in a single order. For applications requiring spring terminals instead of screw terminals, the equivalent model is 3SU1130-0AB40-1FA0 (spring terminal, 1NO). For an illuminated version of the same green flat button with 1NO screw terminal, the equivalent is 3SU1152-0AB40-1BA0 (LED, 24V).

The part number encodes the configuration: 3SU1130 = complete unit with holder, 0AB40 = green flat actuator, plastic with metal ring, 1BA0 = 1NO screw terminal.

The product is available through Siemens' global distributor network including Enrgtech (UK), Southern Controls, Santa Clara Systems, Electric Automation Network, and many regional Siemens authorized partners. Lead times can range from stock to a few weeks depending on distributor inventory. Pricing for comparable 3SU1130 variants typically falls in the $15–$35 USD range depending on region and quantity. The SIRIUS ACT 3SU1 system is an active product line with full Siemens support and documentation available via the Siemens Industry Mall (redirects to SiePortal) and the 610-page system manual (document 107542462).

6. Known Issues

No significant issues reported. The Siemens SiePortal and Industry Mall product pages require JavaScript to render and cannot be scraped programmatically — this is a documentation access limitation rather than a product issue. The SIRIUS ACT line has a long track record of reliability in industrial use. Users should verify that the non-illuminated 3SU1130 variant meets panel indicator requirements; if lamp signaling is needed, the 3SU1152 illuminated equivalent should be specified instead.