3SK1211-1BW20

The 3SK1211-1BW20 is an output expansion module from the Siemens SIRIUS 3SK1 Advanced series. It provides four sets of normally open enable contacts and one set of normally closed signal contacts, with a wide voltage input range of 110-240V AC/DC and a bolt-type terminal design.

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Siemens SIRIUS 3SK1211-1BW20 Safety Charger Output Extension Module with Wide Voltage Range

Product Positioning

The 3SK1211-1BW20 is an output expansion module from the Siemens SIRIUS 3SK1 Advanced series, supporting a wide voltage input of 110-240V AC/DC, suitable for safety circuit applications with diverse field power specifications.

Core Product Advantages and Features

4 sets of energizing normally open contacts

It provides 4 sets of enable (NO) output contacts, plus 1 set of normally closed (NC) signal contacts for convenient feedback monitoring.

Wide voltage input design

Rated voltage covers 110-240V AC/DC, which can meet the power supply specifications of different countries or production lines.

Modular expansion architecture

It can be connected in series with the 3SK1 Advanced series basic unit via the device connector to quickly expand the number of output points.

Bolt-type terminals

Bolted terminal connections ensure secure and reliable wiring, making them suitable for long-term operation in industrial settings.

project	Specification
Product Family	SIRIUS 3SK1 Advanced Series
Product Type	Output expansion module (4RO)
Output contacts	4 sets of normally open enable (NO) + 1 set of normally closed signal (NC)
Rated power supply voltage Us	110-240 V AC/DC
Terminal type	Bolt-type terminals

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