Your data. Your choice.

If you select «Essential cookies only», we’ll use cookies and similar technologies to collect information about your device and how you use our website. We need this information to allow you to log in securely and use basic functions such as the shopping cart.

By accepting all cookies, you’re allowing us to use this data to show you personalised offers, improve our website, and display targeted adverts on our website and on other websites or apps. Some data may also be shared with third parties and advertising partners as part of this process.

Legal noticePrivacy notice

Siemens MSS Expansion Module, 2/4F-DI, 1/2F-RO

Price in EUR including VAT
Ratings
BrandMore from Siemens
Delivered between Wed, 15.7. and Wed, 29.7.
free shipping

Product details

The MSS expansion module from Siemens is a highly advanced relay specifically designed for modular safety systems. With the model designation 3RK32, it offers a flexible solution for expanding safety applications. The module supports a configurable setup via MSS and is suitable for use in demanding industrial environments. It allows for the connection of up to four digital inputs and two relay outputs, enabling versatile integration into existing systems. Its compact design, with a width of only 22.5 mm, minimizes space requirements while maintaining high functionality. The module is designed for an input voltage of 24 V and meets safety standards SIL3 (IEC 61508) and Performance Level E (ISO 13849-1).

  • Configurable via MSS for flexible applications
  • Supports up to 4 digital inputs and 2 relay outputs
  • Complies with SIL3 (IEC 61508) and Performance Level E (ISO 13849-1)
  • Compact design with only 22.5 mm width.

Key specifications

input voltage
24 V
Electric current output
1 A

General information

Item number
9733789
Manufacturer
Siemens
Category
Relays
Manufacturer No.
3RK3221-1AA10
Release date
24.9.2018

Relay properties

input voltage
24 V
Electric current output
1 A
Number of closers
2x

Smart home features

Smart home
Not compatible

Origin

Country of origin
Germany

Sustainability

Manufacturer commitment
RE100, SBTi

Voluntary climate contribution

CO₂ emissions
29,26 kg
Climate contribution
EUR 0,74

Product dimensions

Length
124 mm
Width
22.50 mm
Height
102 mm

Legal Notice

Product Safety

14-day cancellation right
30-day right of return
24 Months statutory warranty
Legal concerns

Compare products

Goes with

Reviews & Ratings

Statutory warranty score

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

Source: Galaxus
  • 9.Hager
    0,6 %
  • 9.Schalk
    0,6 %
  • 11.Siemens
    0,9 %
  • 12.Shelly
    1,1 %
  • 13.Aqara
    1,2 %

Statutory 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: Galaxus
  • Siemens
    Not enough data
  • 1.Shelly
    1 day
  • ABB
    Not enough data
  • Aqara
    Not enough data
  • Eaton
    Not enough data

Return rate

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

Source: Galaxus
  • 9.Schneider Electric
    3,1 %
  • 10.Eltako
    3,6 %
  • 11.Eaton
    3,7 %
  • 12.Siemens
    3,9 %
  • 13.ABB
    5,8 %
Source: Galaxus