3SK1211-1BB00

The 3SK1211-1BB00 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, is powered by a rated voltage of 24V AC, and features a bolt-type terminal connection design.

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Siemens SIRIUS 3SK1211-1BB00 Safety Charger Output Expansion Module 24VAC

Product Positioning

The 3SK1211-1BB00 is an output expansion module from the Siemens SIRIUS 3SK1 Advanced series. It is rated for 24V AC power and is suitable for safety circuit applications in existing systems powered by AC power.

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, which can monitor the output status.

24V AC power supply

It adopts a 24V AC power supply specification, which is suitable for integration with existing control panels that are mainly powered by AC power.

Modular expansion architecture

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

Bolt-type terminals

Bolted terminal connections ensure secure wiring and facilitate maintenance and on-site inspection.

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	24 V AC
Terminal type	Bolt-type terminals

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