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Siemens 3SK1211-1BB40

SKU: 3SK1211-1BB40
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Siemens 3SK1211-1BB40 | SIRIUS Safety Relay – 24V DC, 3NO + 1NC, Basic Unit, SIL 3 / PL e, Screw Terminal

Overview

The Siemens 3SK1211-1BB40 is a safety relay basic unit from the SIRIUS 3SK1 series, designed for monitoring safety circuits such as emergency stop buttons, protective door switches, and light curtains. It operates with 24V DC and offers three normally open (NO) and one normally closed (NC) contact outputs. Certified to SIL 3 (IEC 62061) and PL e (EN ISO 13849-1), this compact relay ensures reliable protection for people and machinery.

Key Features

  • Input Voltage: 24V DC

  • Output Configuration: 3 NO + 1 NC contacts

  • Function: Basic unit for single or dual-channel safety inputs

  • Terminal Type: Screw terminal connection

  • Width: 22.5 mm

  • Mounting: DIN rail

  • Safety Standards: SIL 3 / PL e / Cat. 4

  • Reset Type: Automatic or manual (selectable via wiring)

Technical Specifications

  • Part Number: 3SK1211-1BB40

  • Series: SIRIUS 3SK1

  • Power Consumption: Approx. 2.5 W

  • Switching Capacity: AC-15: 230V/3A; DC-13: 24V/2A

  • Ambient Temperature: –25°C to +55°C

  • Dimensions (HxWxD): Approx. 100 × 22.5 × 120 mm

  • Certifications: CE, UL, cULus, TÜV, EAC, RoHS

Applications

  • Emergency stop circuits

  • Light curtain and safety sensor monitoring

  • Safety interlock systems

  • Industrial machinery requiring Category 4 safety

  • Small to medium-sized control panels

Why Choose the 3SK1211-1BB40?

  • Compact Size: Slim 22.5 mm width saves panel space

  • Certified Safety: Complies with global standards (SIL 3 / PL e)

  • Flexible Use: Compatible with various safety input devices

  • Reliable Siemens Engineering: High switching capacity and durability

  • Easy Installation: DIN rail mount and screw terminals

Order Now

The Siemens 3SK1211-1BB40 safety relay is available and ready for global shipment.

New & Genuine Products – Factory Sealed At PLCpartssolution, all our products are 100% new, genuine, and come in original factory-sealed packaging. We guarantee authentic components that meet the highest industry standards for performance and reliability.
1-Year Warranty Included All new products sold by PLCpartssolution come with a 1-year warranty. We stand behind the quality and reliability of our parts, ensuring coverage against manufacturing defects under normal operating conditions.
Disclaimer: PLCpartssolution is an independent supplier of surplus and refurbished industrial automation products. We are not an authorized distributor, reseller, or representative of the brands listed on this website. All trademarks, brand names, and logos are the property of their respective owners. PLCpartssolution is not affiliated with, endorsed by, or approved by ABB, Fanuc, B&R, Rockwell Automation, Schneider Electric, Siemens, or any other manufacturers mentioned.

Description

Siemens 3SK1211-1BB40 | SIRIUS Safety Relay – 24V DC, 3NO + 1NC, Basic Unit, SIL 3 / PL e, Screw Terminal

Overview

The Siemens 3SK1211-1BB40 is a safety relay basic unit from the SIRIUS 3SK1 series, designed for monitoring safety circuits such as emergency stop buttons, protective door switches, and light curtains. It operates with 24V DC and offers three normally open (NO) and one normally closed (NC) contact outputs. Certified to SIL 3 (IEC 62061) and PL e (EN ISO 13849-1), this compact relay ensures reliable protection for people and machinery.

Key Features

  • Input Voltage: 24V DC

  • Output Configuration: 3 NO + 1 NC contacts

  • Function: Basic unit for single or dual-channel safety inputs

  • Terminal Type: Screw terminal connection

  • Width: 22.5 mm

  • Mounting: DIN rail

  • Safety Standards: SIL 3 / PL e / Cat. 4

  • Reset Type: Automatic or manual (selectable via wiring)

Technical Specifications

  • Part Number: 3SK1211-1BB40

  • Series: SIRIUS 3SK1

  • Power Consumption: Approx. 2.5 W

  • Switching Capacity: AC-15: 230V/3A; DC-13: 24V/2A

  • Ambient Temperature: –25°C to +55°C

  • Dimensions (HxWxD): Approx. 100 × 22.5 × 120 mm

  • Certifications: CE, UL, cULus, TÜV, EAC, RoHS

Applications

  • Emergency stop circuits

  • Light curtain and safety sensor monitoring

  • Safety interlock systems

  • Industrial machinery requiring Category 4 safety

  • Small to medium-sized control panels

Why Choose the 3SK1211-1BB40?

  • Compact Size: Slim 22.5 mm width saves panel space

  • Certified Safety: Complies with global standards (SIL 3 / PL e)

  • Flexible Use: Compatible with various safety input devices

  • Reliable Siemens Engineering: High switching capacity and durability

  • Easy Installation: DIN rail mount and screw terminals

Order Now

The Siemens 3SK1211-1BB40 safety relay is available and ready for global shipment.

Condition

New & Genuine Products – Factory Sealed At PLCpartssolution, all our products are 100% new, genuine, and come in original factory-sealed packaging. We guarantee authentic components that meet the highest industry standards for performance and reliability.

Warranty

1-Year Warranty Included All new products sold by PLCpartssolution come with a 1-year warranty. We stand behind the quality and reliability of our parts, ensuring coverage against manufacturing defects under normal operating conditions.

Disclaimer

Disclaimer: PLCpartssolution is an independent supplier of surplus and refurbished industrial automation products. We are not an authorized distributor, reseller, or representative of the brands listed on this website. All trademarks, brand names, and logos are the property of their respective owners. PLCpartssolution is not affiliated with, endorsed by, or approved by ABB, Fanuc, B&R, Rockwell Automation, Schneider Electric, Siemens, or any other manufacturers mentioned.
Siemens 3SK1211-1BB40

Siemens 3SK1211-1BB40

$236.00
Add to wishlist
Siemens 3SK1211-1BB40

Siemens 3SK1211-1BB40

Your Price:
$236.00
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