Product Description

Siemens SIRIUS Safety Relay Output Expansion 4RO 24V DC – 3SK1211-2BB40

Product Description

The Siemens SIRIUS Safety Relay Output Expansion – 3SK1211-2BB40 is a reliable safety automation accessory designed to expand the output capacity of Siemens SIRIUS safety relay systems. It provides additional relay enabling circuits for safety applications where multiple safety outputs are required.

The 3SK1211-2BB40 safety relay expansion module features 4 NO relay enabling contacts and 1 NC relay signaling contact with a 24V DC control supply. It comes with spring-type push-in terminals, allowing quick and secure wiring in industrial control panels.

This Siemens SIRIUS output expansion relay is suitable for increasing the number of safety-related switching outputs in applications such as emergency stop systems, machine safety circuits, protective door monitoring, automation systems, and industrial safety panels.

At SB Smart, we supply genuine Siemens SIRIUS safety relays, output expansion modules, automation products, and industrial control components with competitive pricing, technical support, bulk order assistance, and fast PAN India delivery.

Key Features

• Genuine Siemens SIRIUS safety relay output expansion module

• 4 relay enabling circuits with NO contacts

• 1 relay signaling circuit with NC contact

• 24V DC operating supply

• Spring-type push-in terminal connection

• Compact DIN rail mounting design

• Expands safety relay output capability

• Suitable for safety-related switching applications

• Reliable Siemens industrial safety technology

• Easy integration with Siemens SIRIUS safety systems

Applications

• Emergency Stop Circuits

• Machine Safety Systems

• Protective Door Monitoring

• Industrial Automation Panels

• Safety Control Panels

• Production Line Safety Systems

• OEM Machine Applications

• Factory Automation Systems

• Motor Safety Applications

• Industrial Equipment Protection

Benefits

• Increases available safety relay outputs

• Enables connection of multiple safety devices

• Simplifies safety circuit expansion

• Reduces panel wiring complexity

• Provides reliable safety switching operation

• Saves installation time with push-in terminals

• Improves machine safety system flexibility

• Supports efficient industrial automation solutions

Why Buy Siemens 3SK1211-2BB40 from SB Smart?

• 100% Genuine Siemens Products

• Competitive Siemens Safety Relay Price in India

• Expert Technical Support

• Bulk Order Assistance

• Fast PAN India Delivery

• Secure Packaging

• Trusted Industrial Electrical Supplier

• GST Invoice Available

• Reliable After-Sales Support

Frequently Asked Questions (FAQs)

Q1. What is Siemens 3SK1211-2BB40 used for?

The 3SK1211-2BB40 is a Siemens SIRIUS safety relay output expansion module used to add additional safety relay outputs in industrial safety applications.

Q2. How many output contacts are available in this safety relay expansion?

It provides 4 NO relay enabling contacts and 1 NC relay signaling contact.

Q3. What is the operating voltage of Siemens 3SK1211-2BB40?

The module operates with a 24V DC supply voltage.

Q4. Where is this Siemens safety relay expansion used?

It is commonly used in machine safety systems, emergency stop circuits, automation panels, and industrial control applications.

Q5. Does SB Smart supply genuine Siemens 3SK1211-2BB40?

Yes. SB Smart supplies genuine Siemens SIRIUS safety products with competitive pricing, technical support, and industrial product assistance.