Safety Limit Switches

Safety limit switches (safety switches) are switches built with a separate actuator, coded or interlocking design that break the safety circuit when a machine's guard or door is opened. They are used in presses, injection molding and packaging machines and robot cells to stop hazardous motion and, in interlocking types, to keep the guard locked until the hazard has ended. The category mostly includes Siemens 3SE series safety switches along with accessories such as actuators, steel cables and tensioning devices, as well as ABB safety limit switches and Isıso door safety switches. Select the safety switch by the structure of the guard, whether interlocking is needed, contact arrangement, IP rating and the safety level required by the risk assessment. Since the actuator is sold separately on many models, check the actuator form and the supplied components on the product page. A standard limit switch not specified for safety applications is not a substitute for a safety switch; for personnel protection, use the types the manufacturer specifies for safety.

Products

Siemens 3SE7930-1AD Safety Switch Equipment — Siemens · SKU: 3SE7930-1AD · TRY 220.00 · Made to order
Isıso T4NS-4BF Door Safety Switch 2NC — Isıso · SKU: T4NS-4BF · TRY 429.01 · In stock
Siemens 3SE6617-3CA04 Safety Switch Equipment Magnetic switch, 3 m Cable (2NC + 1 NC Contact) — Siemens · SKU: 3SE6617-3CA04 · TRY 8,334.00 · Made to order
Siemens 3SE6315-0BB02-1AP0 Safety Switch Equipment Uniquely Coded (Counterpart Can Be Taught Multiple Times) — Siemens · SKU: 3SE6315-0BB02-1AP0 · TRY 19,429.00 · Made to order
Siemens 3SE7140-1BF00 Safety Switch Equipment up to 50m, 2NC contact, IP65, With locking and button reset — Siemens · SKU: 3SE7140-1BF00 · TRY 37,727.00 · Made to order
Siemens 3SE7150-1BD04 Safety Switch Equipment — Siemens · SKU: 3SE7150-1BD04 · TRY 25,697.00 · Made to order
Siemens 3SE7910-3AC Safety Switch Equipment 20m Steel Wire Rope — Siemens · SKU: 3SE7910-3AC · TRY 11,094.00 · Made to order
Siemens 3SE7310-1AE00 Safety Switch Equipment 2NO + 2NC Contact, IP 65 — Siemens · SKU: 3SE7310-1AE00 · TRY 52,120.00 · Made to order
Siemens 3SE6310-1BC01 Safety Switch Equipment Standard — Siemens · SKU: 3SE6310-1BC01 · TRY 8,593.00 · Made to order
Siemens 3SE7950-1AB Safety Switch Equipment Tensioner, for fine adjustment of pre-tension, M6 x 60 — Siemens · SKU: 3SE7950-1AB · TRY 1,240.00 · Made to order
Siemens 3SE6714-2CA Safety Switch Equipment Actuator — Siemens · SKU: 3SE6714-2CA · TRY 1,651.00 · Made to order
Siemens 3SE7950-1AD Safety Switch Equipment Tensioner, for fine adjustment of pre-tension, M6 x 110 — Siemens · SKU: 3SE7950-1AD · TRY 3,397.00 · Made to order
Siemens 3SE6714-3CA Safety Switch Equipment Actuator — Siemens · SKU: 3SE6714-3CA · TRY 1,651.00 · Made to order
Siemens 3SE7941-1AC Safety Switch Accessory Cable Clamp, Oval, 2x 4 mm — Siemens · SKU: 3SE7941-1AC · TRY 1,062.00 · Made to order
Siemens 3SE6310-0BC01 Safety Switch Equipment Standard — Siemens · SKU: 3SE6310-0BC01 · TRY 2,743.00 · Made to order
Siemens 3SE7910-3AH Safety Switch Equipment 50m Steel Wire Rope — Siemens · SKU: 3SE7910-3AH · TRY 27,691.00 · Made to order
Siemens 3SE7150-1BD00 Safety Switch Equipment up to 25m, 1NC+1NO contact, IP65, With locking and button reset — Siemens · SKU: 3SE7150-1BD00 · TRY 16,246.00 · Made to order
Siemens 3SE6415-1AB02 Safety Switch Accessory Uniquely Coded - Closed circuit (Counterpart can be taught multiple times) — Siemens · SKU: 3SE6415-1AB02 · TRY 68,230.00 · Made to order
Siemens 3SE7931-1AD Safety Switch Equipment Tension Spring, 35N, for Connections up to 50m — Siemens · SKU: 3SE7931-1AD · TRY 2,461.00 · Made to order
Siemens 3SE5000-0AV06 Safety Switch Equipment Angled Actuator, Length 51 mm, Angled Approach to Switch from the Right — Siemens · SKU: 3SE5000-0AV06 · TRY 2,581.00 · Made to order
Siemens 3SE7920-1AB Safety Switch Equipment Eye Screw, M8, Used to Secure the Rope — Siemens · SKU: 3SE7920-1AB · TRY 832.00 · Made to order
Siemens 3SE6415-1BB01 Safety Switch Accessory Coded - Closed circuit — Siemens · SKU: 3SE6415-1BB01 · TRY 62,814.00 · Made to order
Siemens 3SE5000-0AV08-1AA3 Safety Switch Accessory Steel Tongue, Actuator Entry Blocking, Hanging Capacity up to 8 Pieces — Siemens · SKU: 3SE5000-0AV08-1AA3 · TRY 2,450.00 · Made to order
Siemens 3SX5601-2GA05 Safety Switch Equipment 5 m — Siemens · SKU: 3SX5601-2GA05 · TRY 3,724.00 · Made to order
Siemens 3SE5000-0AV04 Safety Switch Equipment Angled Actuator, Length 51 mm, Angled Approach to Switch from the Left — Siemens · SKU: 3SE5000-0AV04 · TRY 2,581.00 · Made to order

How to choose Safety Limit Switches

Separate sensing, motion control, logic processing and operator interface requirements.
Select signal type, supply voltage, communication protocol and I/O count for the machine network.
Verify housing size, sensing distance and PNP/NPN output polarity against the PLC input card.

Frequently asked questions

What is Safety Limit Switches and where is it used?

What should I compare when choosing Safety Limit Switches?

Select the safety switch by the structure of the guard, whether interlocking is needed, contact arrangement, IP rating and the safety level required by the risk assessment.

Where can I find technical details for Safety Limit Switches products?

A standard limit switch not specified for safety applications is not a substitute for a safety switch; for personnel protection, use the types the manufacturer specifies for safety.

Safety Limit Switches Selection Guide: Technical Criteria and Engineering Practice