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Siemens 3TK2821-1CB30

SKU: 3TK2821-1CB30
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$310.00
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Siemens 3TK2821-1CB30 | SIRIUS Safety Relay for Emergency Stop and Safety Monitoring Functions

Overview

The Siemens 3TK2821-1CB30 is a SIRIUS safety relay designed to ensure functional safety in machines and systems. It supports up to SIL 3 (IEC 62061) and PL e / Category 4 (ISO 13849-1) applications and is ideal for emergency stop buttons, safety door switches, and two-hand control systems. Operating at 24V DC, it provides 3 normally open (NO) and 1 normally closed (NC) safety-rated relay outputs.

Key Features

  • Control Voltage: 24V DC

  • Safety Outputs:

    • 3 NO safety contacts

    • 1 NC signaling contact

  • Safety Ratings:

    • SIL 3 (IEC 62061)

    • PL e / Cat. 4 (ISO 13849-1)

  • Function Types: E-stop, safety gate monitoring, two-hand operation

  • Reset Options: Automatic or manual reset

  • Mounting: DIN rail (EN 60715)

  • Status Indication: LED indicators for diagnostics

  • Housing Width: 45 mm

  • Connection: Screw-type terminals

  • Protection Class: IP20

Technical Specifications

  • Part Number: 3TK2821-1CB30

  • Series: SIRIUS Safety Integrated

  • Outputs: 3 NO (safety), 1 NC (monitoring)

  • Input Type: Dual-channel

  • Max Switching Voltage: 250V AC

  • Output Current: 6A @ 230V AC

  • Response Time: < 20 ms

  • Operating Temperature: -25°C to +60°C

  • Dimensions (HxWxD): Approx. 100 × 45 × 120 mm

  • Certifications: CE, UL, TUV, cULus, RoHS

Applications

  • Emergency stop circuits

  • Guard door safety monitoring

  • Light curtain integration

  • Two-hand control panels

  • Functional safety systems in industrial automation

Why Choose the 3TK2821-1CB30?

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

  • Compact & Flexible: 45mm housing for narrow panels

  • Multiple Outputs: Supports complex machine safety architectures

  • LED Diagnostics: Clear status indication for fast troubleshooting

  • Reliable Siemens Engineering: Designed for critical safety functions

Order Now

The Siemens 3TK2821-1CB30 is available and ready for international delivery.

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 3TK2821-1CB30 | SIRIUS Safety Relay for Emergency Stop and Safety Monitoring Functions

Overview

The Siemens 3TK2821-1CB30 is a SIRIUS safety relay designed to ensure functional safety in machines and systems. It supports up to SIL 3 (IEC 62061) and PL e / Category 4 (ISO 13849-1) applications and is ideal for emergency stop buttons, safety door switches, and two-hand control systems. Operating at 24V DC, it provides 3 normally open (NO) and 1 normally closed (NC) safety-rated relay outputs.

Key Features

  • Control Voltage: 24V DC

  • Safety Outputs:

    • 3 NO safety contacts

    • 1 NC signaling contact

  • Safety Ratings:

    • SIL 3 (IEC 62061)

    • PL e / Cat. 4 (ISO 13849-1)

  • Function Types: E-stop, safety gate monitoring, two-hand operation

  • Reset Options: Automatic or manual reset

  • Mounting: DIN rail (EN 60715)

  • Status Indication: LED indicators for diagnostics

  • Housing Width: 45 mm

  • Connection: Screw-type terminals

  • Protection Class: IP20

Technical Specifications

  • Part Number: 3TK2821-1CB30

  • Series: SIRIUS Safety Integrated

  • Outputs: 3 NO (safety), 1 NC (monitoring)

  • Input Type: Dual-channel

  • Max Switching Voltage: 250V AC

  • Output Current: 6A @ 230V AC

  • Response Time: < 20 ms

  • Operating Temperature: -25°C to +60°C

  • Dimensions (HxWxD): Approx. 100 × 45 × 120 mm

  • Certifications: CE, UL, TUV, cULus, RoHS

Applications

  • Emergency stop circuits

  • Guard door safety monitoring

  • Light curtain integration

  • Two-hand control panels

  • Functional safety systems in industrial automation

Why Choose the 3TK2821-1CB30?

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

  • Compact & Flexible: 45mm housing for narrow panels

  • Multiple Outputs: Supports complex machine safety architectures

  • LED Diagnostics: Clear status indication for fast troubleshooting

  • Reliable Siemens Engineering: Designed for critical safety functions

Order Now

The Siemens 3TK2821-1CB30 is available and ready for international delivery.

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 3TK2821-1CB30

Siemens 3TK2821-1CB30

$310.00
Add to wishlist
Siemens 3TK2821-1CB30

Siemens 3TK2821-1CB30

Your Price:
$310.00
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