SIRIUS safety position switches with tumbler are comprised of a switch part with electromechanical tumbler and a mechanical actuator which has to be ordered separately.

They are rugged protective devices that enable the greatest possible safety for man and machine.

The position switches with tumbler are offered in plastic or metal enclosures.

Dimensions (W × H × D):

• 3SE5 3: 54 mm × 185 mm × 43.5 mm
• 3SE3 7, 3SE3 8: 56 mm × 144.5 mm × 39.5 mm
• 3SE2 8: 90 mm × 100 mm (+ head 41.3 mm) × 45 mm

Area of application

The position switches with tumbler are exceptional safety-related devices which prevent an unforeseen or intentional opening of protective doors, protective grilles or other covers as long as a dangerous situation is present (i.e. follow-on motion of the switched off machine).

The safety position switches with tumbler have the following functions:

• Enabling the machine or process with closed and locked protective system
• Locking the machine or process with opened protective system
• Position monitoring of the protective system and tumbler

Standards

The switches comply with the standards IEC 60947-1 (Low-Voltage Controlgear, General) and IEC 60947-5-1 (Electromechanical Control Devices).

The mechanical design of the switch corresponds to the requirements of the failsafe principle according to EN 1088.

Approvals

The switches are approved for use with locking devices according to EN 1088 and EN 292, Parts 1 and 2.

3SE5 3 position switches with tumbler bear the VDE test mark for tested according to GS-ET19 (Test Principles of the German Trade Association for Locking Devices with Electromagnetic Tumblers).

3SE2 8 metal-enclosed position switches with tumbler have been awarded a test certificate from the BIA (Berufsgenossenschaftliches Institut für Arbeitssicherheit).

Category 3 according to ISO 13849-1 (EN 954-1) can be attained with one position switch with tumbler if the corresponding failsafe evaluation units are selected and correctly installed, e.g.the 3TK28 safety relays or matching units from the ASIsafe, SIMATIC or SINUMERIK product ranges.

Category 4 can be attained by using an additional position switch.

These switches are approved according to UL 508, UL 50 and UL 746-C.

Technical Specifications