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Siemens SIRIUS 3SK1220-1AB40 Advanced Input Expansion Relay

Siemens SIRIUS Safety Relay Input Expansion Module.

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ManufacturerSiemens

Part number3SK1220-1AB40

Manufacturer Siemens

Part Number 3SK1220-1AB40

Series SIRIUS

Type Safety Relay Input Expansion

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Input Expansion for Safety Relays Supports 2-Channel or 1-Channel Sensors 24V DC Operation Screw Terminal Connections SIRIUS System Compatibility Enhanced Safety Monitoring

Product description

The Siemens 3SK1220-1AB40 is an advanced input expansion module for the SIRIUS safety relay system. It is designed to expand the safety functions by allowing for the connection of additional sensors. This module supports either two 1-channel sensors or one 2-channel sensor configuration, operating with a supply voltage of 24V DC and utilizing screw terminals for connection.

This safety relay expansion is crucial for applications requiring enhanced safety monitoring, such as in machine tools, material handling equipment, and production lines where emergency stops, light curtains, or safety gates need to be monitored with multiple sensor inputs.

Source the Siemens 3SK1220-1AB40 from Stanlo Automation, a veteran-owned distributor specializing in surplus industrial automation parts. We ensure quality and reliability for your safety system components, offering competitive pricing and efficient service.

Technical specifications

Manufacturer	Siemens
Part Number	3SK1220-1AB40
Series	SIRIUS
Type	Safety Relay Input Expansion
Input Channels	2-channel or two 1-channel sensors
Supply Voltage	24 V DC
Terminals	Screw Terminal

Common applications

Machine Safety

Emergency Stops

Safety Gates

Light Curtains

Industrial Control Panels

Production Lines

Compatible systems

Siemens SIRIUS Safety Relay Base Units

Also known as

Siemens SIRIUS Expansion Module 3SK1220 Safety Input Safety Relay Expander

Replaces / compatible with

Expands the input capabilities of compatible Siemens SIRIUS safety relay bases. Consult Siemens documentation for specific base unit compatibility.

Technical note

Expert tip

Ensure that the connected sensors meet the required safety integrity level (SIL) for your application and are correctly wired according to the SIRIUS safety relay system's guidelines.

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Frequently asked questions

What type of sensors can be connected to the Siemens 3SK1220-1AB40?

The Siemens 3SK1220-1AB40 allows for the connection of either two independent 1-channel safety sensors or one 2-channel safety sensor. This provides flexibility in configuring safety monitoring circuits.