Siemens Safety combination 24V/AC 3SK1211-2BB00

Delivered between 12.3.2026 and 26.3.2026
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Product details

Siemens digital industrial SIRIUS safety relay 3SK1211-2BB00
Manufacturer: Siemens Digital Industries
Designation: SIRIUS Safety Relay
Relay Enable Type: 3SK1211-2BB00
Version: Other
Electrical connection version: Spring-cage connection
Mounting rail installation possible: No
Rated control supply voltage Us at AC 50 Hz: 24 V
Rated control supply voltage Us at AC 60 Hz: 24 V
Voltage type for actuation: AC
With removable terminals: No
With muting function: No
With feedback circuit: No
Stop category according to IEC 60204: 0
Performance level according to EN ISO 13849-1: Level e
SIL according to IEC 61508: 3
With UL approval: Yes
Width: 22.5 mm
Height: 100 mm
Depth: 121.6 mm
With TÜV approval: Yes

Siemens digital industrial SIRIUS safety relay 3SK1211-2BB00: more details
SIRIUS safety relay output extension 4RO with relay release circuits, 4 NO contacts plus relay signalling circuit, 1 NC contact, Us = 24 V AC, spring-cage connection (push-in).
SIRIUS 3SK1 output extension for safety relays. The 3SK output extensions are used to add additional safe outputs with a switching capacity of up to 10 A to a basic device. They can be wired to any 3SK basic device. All devices with a control supply voltage of DC 24 V can also be connected to the Advanced 3SK1 and 3SK2 basic devices using device connector 3ZY12. The devices have four (AC-15 5 A) or three (AC-15 10 A) safe outputs. There is a choice between a control voltage of 24 V or wide voltage. Available with screw or spring-cage connection (push-in) throughout. 3SK safety switching devices replace the proven 3TK28 series. Safety is a SIRIUS business.
EAN: 4011209913776.

Key specifications

Scope of delivery
4 NO contacts plus relay signalling circuit 1 NC contact
Output current type
AC
Relay type
Monitoring relay
Electric current output
10 A
Output voltage
24 V
input voltage
24 V
Item number
33752295

General information

Manufacturer
Siemens
Category
Relays
Manufacturer no.
3SK1211-2BB00
Release date
17.5.2023

Relay properties

Relay type
Monitoring relay
input voltage
24 V
Output voltage
24 V
Electric current output
10 A
Output current type
AC
Switching function
Changer
Number of openers
1x
Number of closers
4x

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
4 NO contacts plus relay signalling circuit 1 NC contact

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.Schalk
    0.6 %
  • 9.Hager
    0.7 %
  • 10.Aqara
    1.2 %
  • 10.Siemens
    1.2 %
  • 12.Shelly
    1.3 %

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
  • 7.Hager
    2.5 %
  • 9.Schneider Electric
    2.7 %
  • 9.Siemens
    2.7 %
  • 11.Eltako
    3.5 %
  • 12.ABB
    5.6 %
Source: Digitec Galaxus