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Programmable safety relays MSS

Programmable safety relays MSS represent a significant evolution in industrial safety technology, moving beyond traditional electromechanical solutions. These devices, such as the Siemens MSS series, integrate electronic control for safe, fast, and wear-free operation. Key technical features include a high switching frequency, extended electrica...

Programmable safety relays MSS represent a significant evolution in industrial safety technology, moving beyond traditional electromechanical solutions. These devices, such as the Siemens MSS series, integrate electronic control for safe, fast, and wear-free operation. Key technical features include a high switching frequency, extended electrical life, and the ability to evaluate electronic sensors directly. They support cascading configurations and allow sensor cable lengths up to 2000 meters. Their compact, lightweight construction is immune to vibrations and environmental dirt, making them suitable for harsh industrial environments. These relays hold all necessary global market certifications, ensuring compliance with international safety standards.

These programmable safety relays are primarily deployed in safety-critical applications within industrial automation and machinery control. Typical environments include manufacturing plants, packaging lines, automotive assembly stations, and robotic workcells. They are used to monitor safety gates, light curtains, two-hand controls, and emergency stop circuits. Their ability to be programmed allows for flexible safety logic, adapting to complex machine sequences and reducing downtime during reconfiguration.

The main subcategory within this range is the MSS series, which includes models like the MSS 3RK3. The article code structure for these relays typically follows the pattern 3RK3 xxx-xAx0, where the digits define specific functions, supply voltage, and connection type. For example, the 3RK3 200-1AA00 is a common base unit. Other relevant articles include expansion modules and configuration kits that complement the main safety relay units.

Partnering with Electric Automation Network provides direct access to these advanced safety components with real-time pricing and global express shipping. Our team of specialized engineers offers personalized technical support, assisting with product selection, configuration, and application-specific challenges. Each article is accompanied by detailed technical documentation, ensuring you have all the information needed for a successful integration.

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Manufacturer Code Reference Catalog Number Description Delivery Price

3RK3111-2AA10

3RK3111-2AA10

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SIRIUS, central unit 3RK3 Basic for modular Safety system 3RK3 4/8 F-DI,1F-RO,1 F-DO,24 V DC parameterizable using software Safety ES 45 mm overall width Spring-type terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1)

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3RK3111-1AA10

3RK3111-1AA10

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SIRIUS, central unit 3RK3 Basic for modular Safety system 3RK3 4/8 F-DI,1F-RO,1 F-DO,24 V DC parameterizable using software Safety ES 45 mm width screw terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1)

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3RK3121-2AC00

3RK3121-2AC00

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SIRIUS, Central unit 3RK3 ASIsafe Basic for modular Safety system 3RK3 1/2F-DI, 6DI, 1F-RO, 1F-DO,24 V DC Monitoring of ASI slaves Control of 8 safe outputs on AS-Interface bus parameterizable using software Safety ES 45 mm overall width Spring-type terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) No extension module connectable

SIRIUS, CENTRAL MODULE 3RK3 ASISAFE BASIC FOR MODULAR SECURITY SYSTEM 3RK3 1/2F-DI, 6DI, 1F-RO, 1F-DO, DC 24V SLAVE MONITORING ASI, CONTROL OF 8 SAFE OUTPUTS CONEC. TO THE AS-I BUS PARAMETERIZABLE WITH SW MSS IS WIDTH OF 45MM SPRING TERMINALS UP TO SIL3 (IEC 61508) UP TO PERFORMANCE LEVEL E (ISO 13849-1) NO PLUGGABLE EXPANSION MODULE. Manufactured to order. Non-Cancelable Non-Returnable.

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3RK3122-1AC00

3RK3122-1AC00

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SIRIUS, Central unit 3RK3 ASIsafe Extended for modular Safety system 3RK3 2/4 F-DI, 4 DI, 1 F-RO, 1 F-DO,24 V DC Monitoring of ASI slaves Control of 10 safe outputs on AS-Interface bus parameterizable using software Safety ES 45 mm width screw terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) 2 extension modules connectable

SIRIUS, CENTRAL MODULE 3RK3 ASISAFE EXTENDED FOR MODULAR SECURITY SYSTEM 3RK3 2/4F-DI,4DI,1F-RO,1F-DO,DC 24V SLAVE MONITORING ASI, CONTROL OF 10 SAFE OUTPUTS CONEC. TO THE AS-I BUS PARAMETERIZABLE WITH SW MSS IS WIDTH OF 45MM SCREW TERMINALS UP TO SIL3 (IEC 61508) TO PERFORMANCE LEVEL E (ISO 13849-1) 2 PLUGGABLE EXPANSION MODULES. Manufactured to order. Non-Cancelable Non-Returnable.

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3RK3121-1AC00

3RK3121-1AC00

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SIRIUS, Central unit 3RK3 ASIsafe Basic for modular Safety system 3RK3 1/2F-DI, 6DI, 1F-RO, 1F-DO,24 V DC Monitoring of ASI slaves Control of 8 safe outputs on AS-Interface bus parameterizable using software Safety ES 45 mm width screw terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) No extension module connectable

SIRIUS, CENTRAL MODULE 3RK3 ASISAFE BASIC FOR MODULAR SECURITY SYSTEM 3RK3 1/2F-DI, 6DI, 1F-RO, 1F-DO, DC 24V SLAVE MONITORING ASI, CONTROL OF 8 SAFE OUTPUTS CONEC. TO THE AS-I BUS PARAMETERIZABLE WITH SW MSS IS WIDTH OF 45MM SCREW TERMINALS UP TO SIL3 (IEC 61508) UP TO PERFORMANCE LEVEL E (ISO 13849-1) NO PLUGGABLE EXPANSION MODULE. Manufactured to order. Non-Cancelable Non-Returnable.

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3RK3122-2AC00

3RK3122-2AC00

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SIRIUS, Central unit 3RK3 ASIsafe Extended for modular Safety system 3RK3 2/4 F-DI, 4 DI, 1 F-RO, 1 F-DO,24 V DC Monitoring of ASI slaves Control of 10 safe outputs on AS-Interface bus parameterizable using software Safety ES 45 mm overall width Spring-type terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) 2 extension modules connectable

SIRIUS, CENTRAL MODULE 3RK3 ASISAFE EXTENDED FOR MODULAR SECURITY SYSTEM 3RK3 2/4F-DI,4DI,1F-RO,1F-DO,DC 24V SLAVE MONITORING ASI, CONTROL OF 10 SAFE OUTPUTS CONEC. TO THE AS-I BUS PARAMETERIZABLE WITH SW MSS IS WIDTH OF 45MM SPRING TERMINALS UP TO SIL3 (IEC 61508) UP TO PERFORMANCE LEVEL E (ISO 13849-1) 2 CONNECTABLE EXPANSION MODULES. Manufactured to order. Non-Cancelable Non-Returnable.

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3RK3131-1AC10

3RK3131-1AC10

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SIRIUS, Central unit 3RK3 Advanced for modular Safety system 3RK3 4/8 F-DI,1F-RO,1 F-DO,24 V DC Monitoring of ASI slaves Control of 12 safe outputs on AS-Interface bus parameterizable using software Safety ES 45 mm width screw terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) 9 extension modules connectable

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3RK3131-2AC10

3RK3131-2AC10

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SIRIUS, Central unit 3RK3 Advanced for modular Safety system 3RK3 4/8 F-DI,1F-RO,1 F-DO,24 V DC Monitoring of ASI slaves Control of 12 safe outputs on AS-Interface bus parameterizable using software Safety ES 45 mm overall width Spring-type terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) 9 extension modules connectable

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3RK3141-1CD10

3RK3141-1CD10

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DP/AS-Interface F-Link. Gateway PROFIBUS DP/AS-i for safety-oriented data transmission from ASIsafe to PROFIBUS-DP-PROFIsafe. Master profile M3/M4 according to AS-i specification V3.0. Degree of protection IP20. Screw terminals. Object Manager Configuration with STEP 7 under Windows 10 is not supported.

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3RK3141-2CD10

3RK3141-2CD10

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DP/AS-Interface F-Link. Gateway PROFIBUS DP/AS-i for safety-oriented data transmission from ASIsafe to PROFIBUS-DP-PROFIsafe. Master profile M3/M4 according to AS-i specification V3.0. Degree of protection IP20. Spring-type terminals. Object Manager Configuration with STEP 7 under Windows 10 is not supported.

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3RK3211-2AA10

3RK3211-2AA10

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SIRIUS, Extension module 3RK32 for modular Safety system 3RK3 4/8 F-DI, 24 V DC Can be parameterized via MSS ES 22.5 mm overall width Spring-type terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) without connection cable

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3RK3211-1AA10

3RK3211-1AA10

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SIRIUS, Extension module 3RK32 for modular Safety system 3RK3 4/8 F-DI, 24 V DC Can be parameterized via MSS ES 22.5 mm overall width screw terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) without connection cable

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3RK3221-2AA10

3RK3221-2AA10

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SIRIUS, Extension module 3RK32 for modular Safety system 3RK3 2/4 F-DI, 1/2 F-RO, 24 V DC/1 A Can be parameterized via MSS ES 22.5 mm overall width Spring-type terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) without connection cable

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3RK3221-1AA10

3RK3221-1AA10

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SIRIUS, Extension module 3RK32 for modular Safety system 3RK3 2/4 F-DI, 1/2 F-RO, 24 V DC/1 A Can be parameterized via MSS ES 22.5 mm overall width screw terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) without connection cable

SIRIUS Relays safety, extension module. p/ modular safety system 2/4 F-DI, 1/2 F-RO, 24V DC

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3RK3231-2AA10

3RK3231-2AA10

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SIRIUS, Extension module 3RK32 for modular Safety system 3RK3 2/4 F-DI, 2 F-DO, 24 V DC/1.2 A Can be parameterized via MSS ES 22.5 mm overall width Spring-type terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) without connection cable

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3RK3231-1AA10

3RK3231-1AA10

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SIRIUS, Extension module 3RK32 for modular Safety system 3RK3 2/4 F-DI, 2 F-DO, 24 V DC/1.2 A Can be parameterized via MSS ES 22.5 mm overall width screw terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) without connection cable

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3RK3242-2AA10

3RK3242-2AA10

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SIRIUS, Extension module 3RK32 for modular Safety system 3RK3 4 F-DO, 24 V DC/ 2 A Can be parameterized via MSS ES 22.5 mm overall width Spring-type terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) without connection cable

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3RK3242-1AA10

3RK3242-1AA10

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SIRIUS, Extension module 3RK32 for modular Safety system 3RK3 4 F-DO, 24 V DC/ 2 A Can be parameterized via MSS ES 22.5 mm overall width screw terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) without connection cable

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3RK3251-1AA10

3RK3251-1AA10

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SIRIUS, Extension module 3RK32 for modular Safety system 3RK3 4/8 F-RO, 24 V DC/1 A Can be parameterized via MSS ES 45 mm overall width screw terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) without connection cable

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3RK3251-2AA10

3RK3251-2AA10

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SIRIUS, Extension module 3RK32 for modular Safety system 3RK3 4/8 F-RO, 24 V DC/2 A Can be parameterized via MSS ES 45 mm overall width Spring-type terminal Up to SIL3 (IEC 61508) Up to Performance Level E (ISO 13849-1) without connection cable

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3RK3311-1AA10

3RK3311-1AA10

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SIRIUS, Extension module 3RK33 for modular Safety system 3RK3 8 DO, 24 V DC/0.5 A Can be parameterized via MSS ES 22.5 mm overall width screw terminal without connection cable

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3RK3311-2AA10

3RK3311-2AA10

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SIRIUS, Extension module 3RK33 for modular Safety system 3RK3 8 DO, 24 V DC/0.5 A Can be parameterized via MSS ES 22.5 mm overall width Spring-type terminal without connection cable

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3RK3321-1AA10

3RK3321-1AA10

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SIRIUS, Extension module 3RK33 for modular Safety system 3RK3 8 DI, 24 V DC Can be parameterized via MSS ES 22.5 mm overall width screw terminal without connection cable

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3RK3321-2AA10

3RK3321-2AA10

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SIRIUS, Extension module 3RK33 for modular Safety system 3RK3 8 DI, 24 V DC Can be parameterized via MSS ES 22.5 mm overall width Spring-type terminal without connection cable

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3RK3922-1AC10

3RK3922-1AC10

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Starter package for modular Safety system 3RK3 Content: Central unit MSS Advanced connection: Screw terminal Software Safety ES V1.0 Premium, USB PC cable

P.MODULAR STARTER PACKAGE SAFETY SYSTEM 3RK3 CONTAINS: MSS ADVANCED CENTRAL MODULE, MODULAR SAFETY SYSTEM SOFTWARE ES 2008, PC CABLE. Manufactured to order. Non-Cancelable Non-Returnable.

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3RK3511-1BA10

3RK3511-1BA10

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SIRIUS, interface module DP interface, for modular safety system 3RK3 PROFIBUS DP interface 12 Mbps, RS 485 45 mm overall width screw terminal can be parameterized via Safety ES without connection cable

SIRIUS Safety relays, dp-interface interface module, for modular safety system.

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3RK3611-3AA00

3RK3611-3AA00

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SIRIUS, Diagnostics display for modular Safety system 3RK3 for displaying diagnostics data of the MSS

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3RK3511-2BA10

3RK3511-2BA10

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SIRIUS, interface module DP interface, for modular safety system 3RK3 PROFIBUS DP interface 12 Mbps, RS 485 45 mm overall width spring-type terminal can be parameterized via Safety ES without connection cable

SIRIUS Safety relays, dp-interface interface module, for modular safety system.

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3RK3922-2AC10

3RK3922-2AC10

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Starter package for modular Safety system 3RK3 Content: Central unit MSS Advanced connection: Spring-type terminal Software Safety ES V1.0 Premium, USB PC cable

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3RK3923-1AC00

3RK3923-1AC00

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Starter package for modular Safety system 3RK3 Content: Central unit MSS ASIsafe Basic connection: Screw terminal Software Safety ES V1.0 Premium, USB PC cable

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