3SF1234-1QV40-1BA1

Siemens 3SF1234-1QV40-1BA1 SIRIUS 3SF1 Separate Safety Interlock Switch
Siemens 3SF1234-1QV40-1BA1 SIRIUS 3SF1 Separate Safety Interlock Switch

The SIRIUS 3SF1234-1QV40-1BA1 is a separate operating head safety interlock switch without an electromagnetic locking mechanism. It can withstand entry from five directions, conforms to EN 50047, integrates ASIsafe communication and reports AS-i status, and has 2NC operating contacts with an M12 four-pin connector, suitable for general safety door position detection.

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Siemens 3SF1234-1QV40-1BA1 SIRIUS 3SF1 Separate Safety Interlock Switch
Product Positioning

3SF1234-1QV40-1BA1 is a separate safety interlock switch from the Siemens SIRIUS 3SF1 series. It does not have an electromagnetic locking function and is only used to detect whether a safety door is closed. It is suitable for security door detection applications that do not require locking.

Core Product Advantages and Features
Separate operating head
It adopts a detachable, separate operating head. When the door is opened, the operating head detaches from the main body for position detection.
Without locking mechanism
This model does not have an electromagnetic locking function and is used simply as a detection switch for the opening and closing status of the safety door.
Compliant with EN 50047 standard
The mechanism is designed to comply with the EN 50047 safety interlock switch standard and supports operation entry from 5 directions.
ASIsafe status report
It integrates ASIsafe communication and reports the status of F-IN1, F-IN2 and AS-i, facilitating safety PLC monitoring.
project Specification
model 3SF1234-1QV40-1BA1
Product Type Safety interlock switch (separate operating head, non-locking type)
Number of directions to enter 5 directions
Shell material Plastic, conforming to EN 50047
Connector type M12 connector, 4-pin
Communication function ASIsafe integration
Action contact configuration 2NC, slow motion connection
AS-i Status Report 1: F-IN1, 2: F-IN2, 3: AS-i / Fault

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