3SU1401-1BF40-1AA0

What type of component is this LED module?

It is a Siemens SIRIUS ACT LED module with an integrated green light source, designed to provide visual status indication in industrial control and signalling assemblies.

What operating voltage does the module require?

The module is rated for 230 V AC operation at either 50 Hz or 60 Hz, with a specified operating-voltage tolerance of ±20%.

What colour indication does the module provide?

It produces a green visual indication with a specified luminous intensity of approximately 900 to 1,400 mcd.

How is the module mounted?

The module is designed for front plate mounting as part of a compatible Siemens SIRIUS ACT commanding and signalling device assembly.

What type of electrical connection does it use?

The module uses screw terminals. Siemens specifies a tightening torque of 0.8 to 0.9 N·m for these terminals.

Which conductor sizes can be connected?

Depending on conductor construction and end preparation, the screw terminals accept conductors between 0.5 and 1.5 mm². The stated equivalent range for AWG conductors is AWG 18 to AWG 14.

What are the module's dimensions?

The module measures approximately 33.2 mm high, 9.8 mm wide and 29.4 mm deep.

What is the expected operating life of the integrated LED?

The integrated LED has a typical operating life of 100,000 hours under the specified operating conditions.

What is the maximum current consumption?

The maximum stated current consumption is 20 mA. The module also has a maximum inrush current of 3 A.

What ambient temperatures can the module withstand?

The specified operating temperature range is -25°C to +70°C, while the storage temperature range is -40°C to +80°C.

What ingress protection ratings apply?

The enclosure is rated IP40, while the connection terminal is rated IP20. The final protection level of an assembled device also depends on the surrounding enclosure and installation.

Can the module be installed in both plastic and metal enclosures?

Yes. The module is specified as suitable for integration into compatible plastic or metal enclosures.

Does the module require a separate lamp or transformer?

No. Siemens 3SU1401-1BF40-1AA0 contains an integrated LED and does not incorporate or require a separate lamp transformer for its rated 230 V AC application.

Is the module suitable for hazardous-area installations?

The module is not listed as ATEX- or IECEx-certified, so it should not be selected where either of those certifications is required.

What applications commonly use this green LED module?

Typical applications include control panels, operator stations and machinery interfaces where a green indication is used to show conditions such as operation, readiness, availability or completion.

What should be checked before replacing an existing LED module?

Confirm the 230 V AC rating, green indication colour, screw-terminal connection, front plate mounting arrangement, physical dimensions and compatibility with the existing SIRIUS ACT assembly.