Siemens EMERGENCY STOP switching device 24V/DC basic device 3SK1122-2CB44

Delivered between 26.2.2026 and 12.3.2026
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Product details

SIRIUS Safety Switch Device Basic Unit Advanced Series with time delay of 5-300 s, electronic release circuits 2 s unlatched, 2 s delayed, Us = 24 V DC, spring terminal connection (Push-In). The SIRIUS 3SK1 safety switch device is designed for autonomous safety applications. The Advanced 3SK112 basic units offer universal applications thanks to their multifunctionality and flexible expansion options. They create an innovative system landscape capable of implementing complex safety functions with a variety of sensors and outputs. With device connectors, the number of inputs and safe outputs can be reliably and easily expanded without wiring effort between devices. Drives up to 3 kW can be directly integrated into the 3SK system using the fail-safe motor starters SIRIUS 3SK11 via device connectors. All components have worldwide approvals, making them well-suited for global use and export. The devices are available with relay or semiconductor outputs, either unlatched or delayed, each with various time ranges, and consistently with screw or spring terminal connections (Push-In). Extensive accessories such as sealing covers, mounting brackets for wall installation, and coding pins facilitate handling. Input and output expansions as well as a dedicated power supply can be used via device connectors without additional wiring effort. The 3SK safety switch devices replace the proven 3TK28 series. Safety is a SIRIUS business.

Key specifications

Scope of delivery
Basic machine
Output current type
DC
Relay type
Monitoring relay
Output voltage
24 V
input voltage
24 V
Item number
33752294

General information

Manufacturer
Siemens
Category
Relays
Manufacturer no.
3SK1122-2CB44
Release date
17.5.2023

Relay properties

Relay type
Monitoring relay
input voltage
24 V
Output voltage
24 V
Output current type
DC
Number of closers
2 x
Manufacturer Type
3SK1122-2CB44

Smart home features

Smart Home
Not compatible

Origin

Country of origin
Germany

Sustainability

Manufacturer commitment
RE100SBTi

Voluntary climate contribution

Manufacturer compensation
According to RE100, the manufacturer Siemens fully compensates for its energy consumption, leading to a reduction in emissions.
CO₂-Emission
Climate contribution

Scope of delivery

Scope of delivery
Basic machine

Product dimensions

Length
121.60 mm
Width
22.50 mm
Height
100 mm

30-day right of return
24 Months Warranty (Bring-in)

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Relays» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 8.Hager
    0.7 %
  • 8.Schalk
    0.7 %
  • 10.Aqara
    1.2 %
  • 10.Siemens
    1.2 %
  • 12.Shelly
    1.4 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 1.Siemens
    0 days
  • 2.Shelly
    2 days

Return rate

How often is a product of this brand in the «Relays» category returned?

Source: Digitec Galaxus
  • 5.Eaton
    2 %
  • 6.Shelly
    2.1 %
  • 7.Siemens
    2.3 %
  • 8.Hager
    2.5 %
  • 9.Finder
    2.6 %
Source: Digitec Galaxus