Name: Siemens 3SK1220-1AB40 3SK12201AB40 Circuit protection 24 V DC
Brand: Siemens
SKU: 1420001
Availability: BackOrder

A grey Siemens SIRIUS module, shown from the side, with yellow details. It serves as a safety and control device in industrial installations.

Several wired industrial switches and relays in a control panel. They are labelled 'Siemens' and arranged in a row.

'Diagram shows a control cabinet with several interconnected SIRIUS modules, numbered from 1 to 8, including motor starters and extensions.'

'Logic' diagram shows wiring with inputs IN1, T1, PAR, IN2, T2, INS. Options: Autostart, Cross-error switching, Sensor selection, Start test. SET/RESET button at the bottom.

Technical drawing of a SIRIUS device. Left side view with height 100 mm and width 17.5 mm. Right front view with width 121.7 mm and height 50 mm.

'SIRIUS' Device Schematic. Shows Connections: IN1, IN2, and Status Indicator LEDs. Key Information: SET/RESET Button, Safety Module.

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Datasheet (PDF)

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Technical specifications

Product type: Circuit protection

Nominal voltage: 24 V DC

Manufacturer part #: 3SK12201AB40

Type: 3SK1220-1AB40

Dim: (L x W x H) 121.6 x 17.5 x 100 mm

Connection: Screw terminal

Width: 17.5 mm

Height: 100 mm

Length: 121.6 mm

Depth: 121.6 mm

Max. temperature: 60 °C

Min. temperature: -25 °C

: IP20

Connector: Screw terminals

: 17.5

: Other

: 100 mm

: 121.6 mm

: TRUE

: FALSE

: TRUE

: FALSE

: 0

: 0

: 0

: 0

: 0

: Screw connection

: FALSE

: FALSE

: TRUE

: TRUE

: TRUE

: TRUE

: Level e

: 0

: DC

: One- and two-channel

: 3

UKCA: yes

Variants(All information include VAT, plus shipping costs)

Nominal voltage

Product type

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Documents & Downloads

Datasheet

Datasheet 1420001 Siemens 3SK1220-1AB40 3SK12201AB40 Circuit protection 24 V DC

User & Safety Instructions

User & Safety Instructions 1420001 Siemens 3SK1220-1AB40 3SK12201AB40 Circuit protection 24 V DC

Information

Information 1420001 Siemens 3SK1220-1AB40 3SK12201AB40 Circuit protection 24 V DC

Description

SIRIUS safety relay Input extension Advanced Input extension for an additional 2-channel or two 1-channel sensors US = 24 V DC Screw connection SIRIUS 3SK1 sensor extension for safety-related expansion of the Advanced basic units.
The 3SK1220 sensor extension allows easy and flexible integration of additional sensors into the 3SK system without additional wiring between the devices. The device monitors two 1-channel or one 2-channel sensor independantly of its type of outputs (potential-free or potential-tainted).
The devices are continuously available with screw or spring-type terminals (push-in).
The 3SK safety switching devices replace the proven 3TK28 series.
Safety is a SIRIUS business.

This text is machine translated.