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SIEMENS ENERGY 3SK11111AW20 Safety Relay Enabling Circuit

The Siemens 3SK11111AW20 is a safety relay within the SIRIUS family, specifically designed for enabling circuits. It provides a reliable solution for safety-related applications, incorporating 3 normally open (NO) contacts and 1 normally closed (NC) contact. The relay operates on a voltage range of 110-240V AC/DC (50/60Hz) and is characterized by its robust design, including a finger-safe touch protection and a degree of pollution rating of 3. It is suitable for use in Class A environments and offers features like cross-circuit proofing and a SIL3 safety integrity level, making it ideal for industrial machinery and safety systems requiring reliable and safe operation.

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Source:DigiKey
Part No:3SK11111AW20
Stock:1
Inv Date:05-29-2026
Price: Unit price: $572.1
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Part No:3SK11111AW20
Stock:2
Inv Date:05-30-2026
Price: Unit price: $503.16
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Part No:3SK11111AW20
Stock:14
Inv Date:05-29-2026
Price: Unit price: $528.07
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Part No:3SK11111AW20
Stock:1
Inv Date:05-29-2026
Price: Unit price: $468.79
Buy/RFQ:
Part No:3SK11111AW20
Stock:1
Inv Date:05-29-2026
Price: Unit price: $468.79
Buy/RFQ:

SIEMENS ENERGY 3SK11111AW20 Safety Relay Enabling Circuit Specifications:

  • product brand name: SIRIUS
  • product category: Safetyrelays
  • product designation: safetyrelays
  • design of the product: Relayenablingcircuits
  • protection class IP of the enclosure: IP20
  • touch protection against electrical shock: finger-safe
  • insulation voltage rated value: 300 V
  • ambient temperature during storage: -40 ... +80 °C
  • ambient temperature during operation: -25 ... +60 °C
  • air pressure: 900 ... 1 060 hPa
  • relative humidity during operation: 10 ... 95 %
  • installation altitude: 2 000 m
  • vibration resistance: 5 ... 500 Hz: 0.75 mm
  • shock resistance: 10g/ 11 ms
  • surge voltage resistance rated value: 4 000 V
  • EMC emitted interference: IEC 60947-5-1, Class A
  • overvoltage category: 3
  • degree of pollution: 3
  • reference code: F
  • power loss maximum: 2.5 W
  • number of sensor inputs: 1
  • design of the cascading: none
  • type of the safety-related wiring of the inputs: single-channel and two-channel
  • product feature cross-circuit-proof: Yes
  • SIL acc. to IEC 61508: 3
  • PL acc. to EN ISO 13849-1: e
  • category acc. to EN ISO 13849-1: 4
  • Safe failure fraction: 99 %
  • PFHD: 0.0000000015 1/h
  • PFDavg: 0.000001
  • T1 value: 20 y
  • hardware fault tolerance: 1
  • safety device type: Type A
  • number of outputs as contact-affected switching element NC: 1
  • number of outputs as contact-affected switching element NO: 3
  • stop category: 0
  • design of input feedback: Yes
  • design of input start: Yes
  • operating frequency maximum: 360 1/h
  • switching capacity current DC-13 at 24V: 5 A
  • switching capacity current DC-13 at 115V: 0.2 A
  • switching capacity current DC-13 at 230V: 0.1 A
  • switching capacity current AC-15 at 115V: 5 A
  • switching capacity current AC-15 at 230V: 5 A
  • switching capacity current DC-13 NC at 24V: 1 A
  • switching capacity current DC-13 NC at 115V: 0.2 A
  • switching capacity current DC-13 NC at 230V: 0.1 A
  • switching capacity current AC-15 NC at 115V: 1.5 A
  • switching capacity current AC-15 NC at 230V: 1.5 A
  • thermal current of the switching element: 5 A
  • operational current at 17V minimum: 5 mA
  • total current maximum: 12 A
  • mechanical service life: 10 000 000
  • fuse link for short-circuit protection NO contacts: gL/gG: 6A or circuit breaker type A: 3A or circuit breaker type B: 2A or circuit breaker type C: 1A
  • fuse link for short circuit protection NC contacts: Diazed or Neozed fuses, operating class gL/gG: 6 A or MCB type A: 2 A or MCB type B: 2 A or MCB type C: 1 A
  • wire length for total of all sensor circuits: 2 000 m
  • make time typical: 110 ms
  • make time at DC maximum: 130 ms
  • make time at AC maximum: 130 ms
  • make time after power failure typical: 110 ms
  • make time after power failure maximum: 130 ms
  • make time with monitored start maximum: 15 ms
  • make time with monitored start typical: 15 ms
  • backslide delay time after opening of the safety circuits typical: 10 ms
  • backslide delay time in the event of power failure typical: 200 ms
  • recovery time after opening of the safety circuits typical: 10 ms
  • recovery time after power failure typical: 0.32 s
  • pulse duration of the sensor input minimum: 150 ms
  • pulse duration of the ON pushbutton input minimum: 0.015 s
  • type of voltage of the control supply voltage: AC/DC
  • control supply voltage at DC rated value: 110 ... 240 V
  • control supply voltage at AC rated value: 110 ... 240 V
  • operating range factor control supply voltage: 0.85 ... 1.1

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