3SU1002-2BC40-0AA0

What type of operator is this component?

It is a 22 mm selector switch actuating/signalling element from Siemens SIRIUS ACT, designed to be used on control panels and operator stations.

Is the selector action maintained or spring-return?

It is a momentary (spring-return) selector action with return from the centre position to the left, suited to functions such as jog, acknowledge, or reset where the operator should not stay latched.

How many switch positions does it have?

It provides 2 switching positions with an O<I marking concept.

What is the actuating angle?

The actuating angle is 45° (noted as 10:30 h to 12 h in the datasheet orientation), giving a short, precise movement.

What mounting hole size is required?

It mounts in a standard round 22.3 mm panel cut-out (with up to +0.4 mm positive tolerance).

What are the approximate front dimensions once installed?

The operator has an outer diameter of 32.3 mm, with an overall height/width of about 32.3 mm. Typical installation depth is 25.4 mm and mounting height is 28.8 mm.

What colour and material are the visible front parts?

The handle/actuating element is green and made of plastic. The front ring is a standard black plastic front ring.

Can this selector be illuminated?

Yes. It is designed as an illuminable operator and supports an optional light source; for the Siemens item, this is the illuminable selector switch operator 3SU1002-2BC40-0AA0.

Does it include the contact block?

This item is the actuating/signalling element (operator). A compatible contact module is optional and is typically selected separately to suit the required contact arrangement.

What ingress protection can be achieved when correctly installed?

When correctly mounted, it is rated up to IP66, IP67, and IP69 (IP69K), supporting use in harsh industrial environments.

What NEMA ratings does it correspond to?

It is listed with NEMA 1, 2, 3, 3R, 4, 4X, 12, and 13 ratings (depending on installation conditions and enclosure design).

What operating temperature range is it designed for?

Ambient temperature during operation is specified as -25 to +70 °C, with storage from -40 to +80 °C.

How durable is the mechanism for frequent use?

The typical mechanical service life is 1,000,000 switching cycles, with a maximum operating frequency of 1,800 operations per hour.

Is it suitable for applications with shock and vibration?

It is specified for shock resistance to IEC 60068-2-27 and vibration resistance to IEC 60068-2-6 (10 to 500 Hz, 5 g), with additional railway-related references in the documentation.