The Siemens 3SE51120AA008K is a metal enclosure for Siemens SIRIUS 3SE51 position-switch applications, designed according to EN 50041. It features a 40 mm wide metal housing, a turquoise cover, and 1 × M20 × 1.5 cable entry. The enclosure is intended to house compatible position-switch components and is supplied as an empty enclosure with cover, rather than as a complete position switch. Siemens identifies the corresponding market-facing configuration as 3SE5112-0AA00.
The 3SE51120AA008K is used as the enclosure portion of a compatible 3SE51 mechanical position-switch assembly. It provides the physical housing into which the appropriate basic switch, switching contacts, and actuator arrangement can be incorporated.
This makes it useful for:
Siemens classifies the corresponding 3SE5112-0AA00 as an accessory/spare-part enclosure for the SIRIUS 3SE5 mechanical position-switch family.
The enclosure has a 40 mm width and a metal construction. Siemens documentation specifies the enclosure dimensions as approximately 85.7 mm length × 40 mm width, with a height of approximately 37.3 mm.
The metal housing provides a robust platform for compatible mechanical position-switch components used in industrial machinery.
Its compact block-style construction makes it suitable for applications where installation space is limited while a metal enclosure is preferred.
The 3SE51120AA008K is designed according to EN 50041, a standard associated with industrial position-switch dimensions and configurations.
This makes the enclosure suitable for compatible standard position-switch arrangements and can simplify component selection for OEM machine builders familiar with the EN 50041 format.
The corresponding Siemens product is explicitly described as an enclosure according to EN 50041 with cover.
The enclosure is supplied with a turquoise cover.
The cover forms part of the enclosure assembly and provides the housing required for compatible 3SE51 switching components.
For replacement applications, matching the enclosure type, dimensions, connection arrangement, and complete Siemens order number is recommended rather than selecting the component based only on appearance.
The enclosure provides 1 × M20 × 1.5 cable entry.
This provides a standard metric connection point for routing electrical wiring into the position-switch assembly.
Appropriate cable glands and wiring accessories should be selected according to the installation environment and required protection level.
The Siemens data sheet specifically lists the cable-entry type as 1 × M20 × 1.5.
For the corresponding Siemens 3SE5112-0AA00 enclosure configuration, the specified protection class is IP66/IP67.
This makes the enclosure suitable for appropriately designed industrial installations where protection against dust and water ingress is required.
The actual protection of a completed position-switch assembly depends on correct assembly, sealing, cable glands, and installation practices.
An important point about the 3SE51120AA008K is that it is an empty enclosure with cover.
It should therefore not be confused with a complete position switch.
A complete position-switch assembly may require additional components such as:
Siemens product documentation shows the 3SE5112-0AA00 as the empty enclosure with cover used within compatible 3SE5 position-switch configurations.
A compatible 3SE51 position-switch assembly using this enclosure can be used in:
The enclosure itself provides the housing; the actual switching and position-detection function depends on the compatible internal components and actuator used.
For OEM machine manufacturers, the 3SE51120AA008K provides a standardized metal housing for compatible 3SE51 position-switch configurations.
The 40 mm metal enclosure, EN 50041 design, turquoise cover, and M20 × 1.5 cable entry provide a practical configuration for industrial machine installations.
Its modular nature allows the appropriate internal switching components and actuator to be selected separately according to the machine's requirements.
The enclosure can be useful when repairing or rebuilding an existing Siemens 3SE51 position-switch assembly.
Before ordering, verify:
This is especially important because the enclosure alone does not provide the complete position-switch function.
The Siemens data sheet specifies a metal enclosure, cathodic-dip-coated construction, IP66/IP67 protection, 30 g / 11 ms shock resistance, and 0.35 mm/5 g vibration resistance for the corresponding configuration. The operating temperature range is -25 °C to +85 °C.
These characteristics make the enclosure suitable for appropriately selected industrial environments and machinery applications.
Siemens lists the corresponding enclosure configuration as suitable for incorporation into a safety function. However, the enclosure itself does not perform the complete safety function.
If the completed position-switch assembly is used for a safety-related application, the complete safety circuit and machine safety architecture must be appropriately designed, verified, and validated.
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The 3SE51120AA008K is a Siemens SIRIUS 3SE51 metal enclosure for position-switch applications, designed according to EN 50041 and supplied with a turquoise cover and 1 × M20 × 1.5 cable entry.
No. It is an enclosure/accessory component. Compatible switching and actuator components are required to create a complete position-switch assembly.
The enclosure is 40 mm wide.
It has a metal enclosure with a protective coating.
It has 1 × M20 × 1.5 cable entry.
The cover is turquoise.
The corresponding Siemens enclosure configuration is specified with IP66/IP67 protection.
It is designed according to EN 50041
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3SE5 |
| Model Number | 3SE5112-0AA00-8K |
| Variant | AA008K |
| Product Type | Safety Position Switch |
| Operating Principle | Separate Actuator |
| Housing Material | Metal |
| Positive Opening Contacts | Yes |
| Connection Type | Screw Terminal |
| Cable Entry | M20 x 1.5 |
| Protection Rating | IP66 / IP67 |
| Rated Insulation Voltage | 400 V |
| Thermal Current | 10 A |
| Mechanical Life | Up to 1 Million Operations |
| Shock Resistance | 30 g / 11 ms |
| Vibration Resistance | 0.35 mm / 5 g |
| Operating Temperature | -25°C to +85°C |
| Storage Temperature | -40°C to +90°C |
| Mounting Position | Any |
| Brand | Siemens |
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