• Siemens SIRIUS 3SF1 AS-i Safety Position Switches (ASIsafe)
1 1

Siemens SIRIUS 3SF1 AS-i Safety Position Switches (ASIsafe)

Siemens SIRIUS 3SF1 AS-i Safety Position Switches (ASIsafe)

SIRIUS 3SF1 mechanical position switches and safety switches with separate actuator with integrated ASIsafe electronics for direct AS-Interface connection.

Key features

  • Integrated ASIsafe electronics for safety-related AS-Interface communication
  • Connection via M12 device plug, 4-pole
  • Plastic (31/50 mm) and metal (31/40/56 mm) enclosures
  • Basic switches with rounded plunger; actuator heads from the 3SE5 range
  • Versions with second channel on M12 socket for an additional sensor

Specifications

Brand Siemens
Product line SIRIUS 3SF1
Communication AS-Interface, ASIsafe
Connection M12 device plug, 4-pole
Degree of protection IP65 (plastic 31 mm), IP66/IP67
Category Safety Switches
Source Siemens Catalog IC 10 · 2026, p. 1172-1188
3SF1234-1KC05-1BA1 Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Plastic 31 mm | Contacts: 2 NC, slow-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: 3 LEDs, 24 V DC
3SF1234-1LC05-1BA1 Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Plastic 31 mm | Contacts: 2 NC, snap-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: 3 LEDs, 24 V DC
3SF1244-1KC05-1BA2 Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Plastic 50 mm | Contacts: 1 NC, slow-action | ASIsafe channels: Ch1 on NC, Ch2 on M12 socket | LEDs: 3 LEDs, 24 V DC
3SF1244-1LC05-1BA2 Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Plastic 50 mm | Contacts: 1 NC, snap-action | ASIsafe channels: Ch1 on NC, Ch2 on M12 socket | LEDs: 3 LEDs, 24 V DC
3SF1214-1KC05-1BA1 Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Metal 31 mm | Contacts: 2 NC, slow-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: 3 LEDs, 24 V DC
3SF1214-1LC05-1BA1 Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Metal 31 mm | Contacts: 2 NC, snap-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: 3 LEDs, 24 V DC
3SF1114-1KA00-1BA1 Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Metal 40 mm | Contacts: 2 NC, slow-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: 3 LEDs, 24 V DC
3SF1114-1LA00-1BA1 Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Metal 40 mm | Contacts: 2 NC, snap-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: 3 LEDs, 24 V DC
3SF1124-1KA00-1BA2 Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Metal 56 mm | Contacts: 1 NC, slow-action | ASIsafe channels: Ch1 on NC, Ch2 on M12 socket | LEDs: 3 LEDs, 24 V DC
3SF1124-1LA00-1BA2 Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Metal 56 mm | Contacts: 1 NC, snap-action | ASIsafe channels: Ch1 on NC, Ch2 on M12 socket | LEDs: 3 LEDs, 24 V DC
3SF1234-1QV40-1BA1 Device: Safety switch, separate actuator | Actuator: Separate actuator | Enclosure: Plastic 31 mm | Contacts: 2 NC, slow-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: -
3SF1244-1QV40-1BA2 Device: Safety switch, separate actuator | Actuator: Separate actuator | Enclosure: Plastic 50 mm | Contacts: 1 NC, slow-action | ASIsafe channels: Ch1 on NC, Ch2 on M12 socket | LEDs: -
3SF1214-1QV40-1BA1 Device: Safety switch, separate actuator | Actuator: Separate actuator | Enclosure: Metal 31 mm | Contacts: 2 NC, slow-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: -
3SF1114-1QV10-1BA1 Device: Safety switch, separate actuator | Actuator: Separate actuator | Enclosure: Metal 40 mm | Contacts: 2 NC, slow-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: -
3SF1124-1QV10-1BA2 Device: Safety switch, separate actuator | Actuator: Separate actuator | Enclosure: Metal 56 mm | Contacts: 1 NC, slow-action | ASIsafe channels: Ch1 on NC, Ch2 on M12 socket | LEDs: -
Safety SwitchesSiemens
15 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
RFQ List 0 Email about this

Need a different model, or a part not listed here? Send us your parts list →

Siemens SIRIUS 3SF1 AS-i Safety Position Switches (ASIsafe)

Brand Siemens·Safety Switches

Available part numbers (15)

3SF1234-1KC05-1BA1, 3SF1234-1LC05-1BA1, 3SF1244-1KC05-1BA2, 3SF1244-1LC05-1BA2, 3SF1214-1KC05-1BA1, 3SF1214-1LC05-1BA1, 3SF1114-1KA00-1BA1, 3SF1114-1LA00-1BA1, 3SF1124-1KA00-1BA2, 3SF1124-1LA00-1BA2 + 5 more — see full table ↓

How to order

Send the Siemens part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

RFQ List 0 →
View full details
Product codes & specifications
0 selected
RFQ List (0)
Product codeSpec
3SF1234-1KC05-1BA1Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Plastic 31 mm | Contacts: 2 NC, slow-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: 3 LEDs, 24 V DC
3SF1234-1LC05-1BA1Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Plastic 31 mm | Contacts: 2 NC, snap-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: 3 LEDs, 24 V DC
3SF1244-1KC05-1BA2Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Plastic 50 mm | Contacts: 1 NC, slow-action | ASIsafe channels: Ch1 on NC, Ch2 on M12 socket | LEDs: 3 LEDs, 24 V DC
3SF1244-1LC05-1BA2Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Plastic 50 mm | Contacts: 1 NC, snap-action | ASIsafe channels: Ch1 on NC, Ch2 on M12 socket | LEDs: 3 LEDs, 24 V DC
3SF1214-1KC05-1BA1Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Metal 31 mm | Contacts: 2 NC, slow-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: 3 LEDs, 24 V DC
3SF1214-1LC05-1BA1Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Metal 31 mm | Contacts: 2 NC, snap-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: 3 LEDs, 24 V DC
3SF1114-1KA00-1BA1Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Metal 40 mm | Contacts: 2 NC, slow-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: 3 LEDs, 24 V DC
3SF1114-1LA00-1BA1Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Metal 40 mm | Contacts: 2 NC, snap-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: 3 LEDs, 24 V DC
3SF1124-1KA00-1BA2Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Metal 56 mm | Contacts: 1 NC, slow-action | ASIsafe channels: Ch1 on NC, Ch2 on M12 socket | LEDs: 3 LEDs, 24 V DC
3SF1124-1LA00-1BA2Device: Basic switch (modular system) | Actuator: Rounded plunger | Enclosure: Metal 56 mm | Contacts: 1 NC, snap-action | ASIsafe channels: Ch1 on NC, Ch2 on M12 socket | LEDs: 3 LEDs, 24 V DC
3SF1234-1QV40-1BA1Device: Safety switch, separate actuator | Actuator: Separate actuator | Enclosure: Plastic 31 mm | Contacts: 2 NC, slow-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: -
3SF1244-1QV40-1BA2Device: Safety switch, separate actuator | Actuator: Separate actuator | Enclosure: Plastic 50 mm | Contacts: 1 NC, slow-action | ASIsafe channels: Ch1 on NC, Ch2 on M12 socket | LEDs: -
3SF1214-1QV40-1BA1Device: Safety switch, separate actuator | Actuator: Separate actuator | Enclosure: Metal 31 mm | Contacts: 2 NC, slow-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: -
3SF1114-1QV10-1BA1Device: Safety switch, separate actuator | Actuator: Separate actuator | Enclosure: Metal 40 mm | Contacts: 2 NC, slow-action | ASIsafe channels: Ch1 + Ch2 on NC contacts | LEDs: -
3SF1124-1QV10-1BA2Device: Safety switch, separate actuator | Actuator: Separate actuator | Enclosure: Metal 56 mm | Contacts: 1 NC, slow-action | ASIsafe channels: Ch1 on NC, Ch2 on M12 socket | LEDs: -

Need a different model, or a part not listed here? Send us your parts list →

Related products

All Relays & Switches →