SIEMENS
Robust Siemens SIRIUS ACT 3SU1550-1AA10-1BA0 universal holder, 3-way, with durable plastic/metal construction and one pre-installed NO (Normally Open) contact element. Features secure screw terminals for quick and reliable wiring in industrial control applications.
The Siemens 3SU1550-1AA10-1BA0 is a universal 3‑way holder designed for electrical or control‑panel applications. Built with a robust plastic‑metal combination, it offers a secure mounting solution and reliable connectivity via a 1 NO (normally open) screw terminal. This holder provides flexibility and durability for a variety of industrial settings.
Universal 3‑way design — compatible with a range of devices and modules.
Plastic and metal construction — ensures strength, durability, and long service life.
1 NO screw terminal contact — reliable and simple connection point.
Easy installation — screw‑mounting mechanism simplifies mounting in panels or enclosures.
Versatile use — suitable for industrial control panels, automation setups, electrical cabinets, and more.
Secure and stable mounting — minimizes vibration or loosening in industrial environments.
Durable build ensures longevity — plastic/metal combo resists wear, impact, and harsh conditions.
Reliable electrical connection — the 1 NO screw terminal provides dependable, maintenance‑friendly connectivity.
Flexible compatibility — the universal holder design allows use with various modules, reducing the need for multiple holder types.
Saves installation time — straightforward screw‑down mounting and terminal wiring.
Industrial control panels & switchboards
Automation modules and relay assemblies
Electric cabinets and enclosures
Maintenance and replacement in existing systems
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| SKU / Model | 3SU1550-1AA10-1BA0 |
|---|---|
| Brand | SIEMENS |
| product brand name | SIRIUS ACT |
| product designation | Holders |
| product type designation | 3SU1 |
| manufacturer's article number | - |
| ● of supplied contact module | 3SU1400-1AA10-1BA0 |
| ● of supplied contact module at position 1 | 3SU1400-1AA10-1BA0 |
| ● of the supplied holder | 3SU1550-0AA10-0AA0 |
| design of the actuating element | 3-way with module |
| number of contact modules | 1 |
| material of the holder | Plastic |
| number of LED modules | 0 |
| product function positive opening | No |
| product component | - |
| ● diode | No |
| ● lamp transformer | No |
| ● light source | No |
| ● series resistor | No |
| insulation voltage rated value | 500 V |
| degree of pollution | 3 |
| surge voltage resistance rated value | 6 kV |
| protection class IP of the terminal | IP20 |
| 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 |
| ● for railway applications acc. to DIN EN 61373 | Category 1, Class B |
| operating frequency maximum | 3 600 1/h |
| mechanical service life (switching cycles) typical | 10 000 000 |
| thermal current | 10 A |
| reference code acc. to IEC 81346-2 | U |
| 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) |
| design of the contact of auxiliary contacts | Silver alloy |
| number of NC contacts for auxiliary contacts | 0 |
| number of NO contacts for auxiliary contacts | 1 |
| operational current at AC-15 at 230 V rated value | 6 A |
| type of electrical connection | - |
| 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 |
| ● for grounding | 0.8 ... 1 N·m |
| ambient temperature | - |
| ● during operation | -25 ... +70 °C |
| ● during storage | -40 ... +80 °C |
| environmental category during operation acc. to IEC 60721 | 3M6, 3S2, 3B2, 3C3, 3K6 (with relative air humidity of 10 ... 95 %, no condensation in operation permitted) |
| fastening method | front panel mounting |
| ● of modules and accessories | Front plate mounting |
| shape of the installation opening | round |
| installation width | 30 mm |
| installation depth | 49.8 mm |
| thickness of the front plate usable | 1 ... 6 mm |
| Test Certificates | Marine / Shipping |
| last modified: | 10/1/2021 |
| Weight | 0.051 kg |
| Dimensions | 40.00 × 50.00 × 30.00 mm |
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