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Siemens 3SK1121-1CB44 SIRIUS Safety Relay (24V DC, Time Delay)

Siemens 3SK1121-1CB44 SIRIUS safety relay with time delay, 24V DC.

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ManufacturerSiemens

Part number3SK1121-1CB44

Part Number 3SK1121-1CB44

Manufacturer Siemens

Product Type Safety Relay

Series SIRIUS Advanced

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SIRIUS Advanced series Electronic safety relay Adjustable time delay (5-300s) 2 instantaneous NO outputs 2 delayed NO outputs 24V DC operation

Product description

The Siemens 3SK1121-1CB44 is an advanced SIRIUS safety relay designed for complex safety applications requiring timed responses. It operates as a basic unit within the Advanced series.

This relay features two instantaneous Normally Open (NO) enabling circuits and two delayed Normally Open (NO) enabling circuits. It includes an adjustable time delay function ranging from 5 to 300 seconds. The unit operates on a 24 V DC supply and utilizes screw terminals for connections.

Stanlo Automation, your veteran-owned source for surplus industrial automation parts, offers the Siemens 3SK1121-1CB44. Ensure your safety systems meet stringent requirements with reliable, competitively priced components.

Technical specifications

Part Number	3SK1121-1CB44
Manufacturer	Siemens
Product Type	Safety Relay
Series	SIRIUS Advanced
Unit Type	Basic Unit
Time Delay	Adjustable 5-300 s
Enabling Circuits	2 NO Instantaneous, 2 NO Delayed
Supply Voltage (Us)	24 V DC
Terminal Type	Screw Terminal

Common applications

Timed safety functions

Controlled machine startup

Safety gate monitoring with delay

Industrial automation

Process control

Safety interlocking systems

Compatible systems

Safety sensors Timed control systems 24V DC power supplies Industrial automation panels

Also known as

Siemens SIRIUS 3SK1121-1CB44 3SK1121-1CB44 Safety Relay Siemens Delayed Safety Relay

Replaces / compatible with

This advanced safety relay replaces complex combinations of safety relays and timers, providing integrated timed safety functions for enhanced machine safety.

Technical note

Expert tip

The 3SK1121-1CB44 requires a stable 24V DC supply. Ensure the time delay setting is appropriate for the safety application and machine cycle.

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Frequently asked questions

How is the time delay adjusted on the Siemens 3SK1121-1CB44?

The time delay on the Siemens 3SK1121-1CB44 can be adjusted via a rotary switch on the front of the unit, offering a range from 5 to 300 seconds. This allows for flexible configuration of timed safety sequences.