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Siemens 3SK2941-2AA11 — Safety Relays

Siemens 3SK2941-2AA11 SIRIUS Safety Relay, 24 VDC, 6.5 A

MPN3SK2941-2AA11
Active

Siemens SIRIUS safety relay, 3SK2941-2AA11, 24 VDC, 6.5 A total current, IP20, snap-on DIN rail.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3SK2941-2AA11 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationBasic starter kit
Product design / configurationcomprises 3SK2112-2AA10 basic unit, SIRIUS Safety Basic TIA for download and 3UF7941-0AA00-0 USB PC cable
3SK2941-2AA11 — Safety ratings
ParameterValue
Safety integrity level (IEC 61508)3
Category (EN ISO 13849-1)4
PFHd, high demand rate (EN 62061)1E-8 1/h
Hardware fault tolerance (IEC 61508)1
Stop category (EN 60204-1)0 / 1
3SK2941-2AA11 — Monitoring & inputs
ParameterValue
Emergency-off circuit monitoringYes
Protective door monitoringYes
Position switch monitoringYes
Magnetically operated switch monitoringYes
Valve monitoringYes
Monitored start-upYes
3SK2941-2AA11 — Outputs & contacts
ParameterValue
Max. operating frequency2 000 1/h
3SK2941-2AA11 — Electrical
ParameterValue
Rated insulation voltage50 V
Rated surge voltage withstand800 V
3SK2941-2AA11 — Connection
ParameterValue
Type of electrical connectionspring-loaded terminal (push-in)
Conductor cross-section, solid20 ... 16
Conductor cross-section, stranded20 ... 16
3SK2941-2AA11 — Mechanical
ParameterValue
Touch protection against electric shockfinger-safe
Fastening methodSnap-mounted to DIN rail or screw-mounted with additional push-in lug
Mounting positionany
Width22.5 mm
Height100 mm
Depth124.5 mm
3SK2941-2AA11 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-40 ... +80 °C
Relative humidity, operating10 ... 95 %
Installation altitude, max.4 000 m; Derating, see Product Notification 109792701
Shock resistance15g / 11 ms
Vibration resistance (IEC 60068-2-6)5 ... 500 Hz: 0.75 mm
Air pressure (SN 31205)90 ... 106 kPa
3SK2941-2AA11 — Specifications
ParameterValue
At DC rated value24 V

Product details

The Siemens 3SK2941-2AA11 is a SIRIUS safety relay, part of the Basic starter kit that includes the 3SK2112-2AA10 basic unit, the SIRIUS Safety Basic TIA configuration software for download, and a 3UF7941-0AA00-0 USB PC cable. It operates on a 24 VDC supply and handles a total current of up to 6.5 A. The unit supports both PROFIBUS DP and PROFINET IO protocols when used with the respective interface modules, enabling 64-bit cyclical data exchange. It provides valve monitoring, a monitored start-up function, and an adjustable input delay time from 0 to 150 ms.

Dimensions are 22.5 mm wide, 100 mm high, and 124.5 mm deep — a standard single-module footprint that fits tightly on a DIN rail. Shock resistance is rated at 15g for 11 ms.

Frequently asked questions

Where can I buy 3SK2941-2AA11 and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote (RFQ) to receive current pricing and availability.

What is 3SK2941-2AA11's listed depth?

The depth is 124.5 mm, which fits standard DIN-rail enclosures with that clearance.

What compliance documentation does this brand provide for 3SK2941-2AA11?

The SIRIUS safety relay carries IP20 enclosure protection and is designed for pollution degree 3 environments. Specific compliance documentation (RoHS, REACH, UL, IEC) is typically available from Siemens upon request, but the evidence does not list these certifications directly.

MPN
3SK2941-2AA11