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3SK1111-1AW20

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Marvo Stock ID MV-6MKV
HS Code 85364900
SKU 3SK1111-1AW20
Warranty 12 months
Weight (kg) 0.80
Length (mm) 320.00
Width (mm) 250.00
Height (mm) 250.00

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Specification & Description

Specification Description
Part Number 3SK1111-1AW20
Alternative Part Number 3SK11111AW20
Manufacturer Siemens
Product Series SIRIUS 3SK
Product Type Safety Relay
Supply Voltage 110 to 240 V ac
Number of Channels 1 Channel
Dimensions 22.5 x 100 x 121.6 mm
Protection Class IP20
Insulation Voltage Rated value 300 V
Ambient Operating Temperature -25 to +60 °C
Storage Temperature -40 to +80 °C
Air Pressure 90 to 106 kPa
Relative Humidity 10 to 95 %
Installation Altitude Up to 2000 m above sea level
Vibration Resistance 5 to 500 Hz: 0.75 mm
Shock Resistance 10g / 11 ms
Surge Voltage Resistance Rated value 4000 V
EMC Emitted interference IEC 60947-5-1, Class A
Safety Integrity Level (SIL) SIL3 according to IEC 61508
Performance Level (PL) PL e according to EN ISO 13849-1
Category according to EN ISO 13849-1 4
Safe Failure Fraction (SFF) 99 %
PFHD 0.0000000015 1/h
PFDavg 0.000001
T1 Value for Proof Test Interval 20 years
Hardware Fault Tolerance According to IEC 61508: 1
Safety Device Type Type A according to IEC 61508-2
Number of Safety-related Contacts 3 NO contacts for safety-related instantaneous actions
Number of Signalling Contacts 1 NC contact for signalling function
Stop Category 0 according to DIN EN 60204-1

The Siemens SIRIUS 3SK Series Safety Relay, part number 3SK1111-1AW20, is a fundamental component for various industrial safety applications. Designed to meet stringent safety requirements, this relay is engineered to facilitate the safe and reliable operation of machinery and plant equipment. With a supply voltage range of 110 to 240 V ac, it is versatile for international use and compatible with a wide array of control systems.

This compact device, with dimensions of 22.5 x 100 x 121.6 mm, is suitable for space-constrained environments while offering a robust set of features. It includes three normally open (NO) safety-related contacts and one normally closed (NC) signalling contact, providing flexibility in safety circuit design. The relay is also equipped with a finger-safe enclosure, ensuring protection against electrical shock and enhancing workplace safety.

The 3SK1111-1AW20 is rated for Performance Level e and Safety Integrity Level 3, according to EN ISO 13849-1 and IEC 61508, respectively. These ratings indicate a high level of reliability in safety-related parts of control systems. Additionally, the relay boasts a Safe Failure Fraction (SFF) of 99%, indicating its ability to perform reliably over time.

Installation is straightforward, with screw-type terminals for secure and reliable connections. The relay does not require a plug-in socket, which simplifies wiring and maintenance. It is designed for use in Class A electromagnetic environments and is equipped with measures to prevent undesired radio-frequency interference in residential areas.

The Siemens SIRIUS 3SK Series Safety Relay is an essential component for those seeking to maintain high safety standards in industrial settings while ensuring compliance with international safety regulations. Its reliable performance and ease of integration make it a valuable addition to any safety system.

Commonly Asked Questions

Is my order covered by a warranty?

Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.

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We accept card payments from all major credit, debit and Mastercard providers including Visa, American Express, Western Union, Paypal and bank transfers. Before you complete an order you will be prompted to input your payment details, at which point you can enter the relevant card information you wish to use for your transaction. If you are experiencing issues with your payment method then you can contact our team via email here. From there, you will be directed to the most relevant resource or person to help you complete your payment, get your order processed and ensure that your parts are on the way to your delivery address.

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Is Marvo a credible parts supplier?

Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services. Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.

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Have steps been taken to ensure quality control?

Marvo takes pride in product quality and has put several measures in place to assure high levels of quality standards. For your peace of mind, all parts have been ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. Redefine convenience and secure priority delivery on all parts along with a comprehensive 12-month warranty. This is the smart new way to buy automation and control components.

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Frequently Asked Questions

What is the voltage range for this safety relay?

The safety relay operates within a voltage range of 110 to 240 V AC.

Can this safety relay be used for autonomous safety applications?

Yes, the design of the product is intended for autonomous safety applications.

What is the protection class of the enclosure for this relay?

The enclosure for this relay has a protection class of IP20.

Is the relay finger-safe to protect against electrical shock?

Yes, it is designed to be finger-safe to provide protection against electrical shock.

What are the ambient temperature limits for operating this relay?

The relay can operate within an ambient temperature range of -25 to +60 degrees Celsius.

What is the maximum installation altitude for this relay?

The maximum installation altitude for the relay is 2,000 meters above sea level.

Does this relay have a vibration resistance specification?

Yes, the relay has a vibration resistance according to IEC 60068-2-6, which is 5 to 500 Hz at 0.75 mm.

What is the surge voltage resistance of this safety relay?

The surge voltage resistance rated value for this relay is 4,000 V.

What safety integrity level does this relay meet?

This safety relay meets Safety Integrity Level (SIL) 3 according to IEC 61508.

What performance level does the relay conform to?

The relay conforms to Performance Level (PL) e according to EN ISO 13849-1.

How many safety-related instantaneous contacts does the relay have?

The relay has 3 safety-related instantaneous contacts.

Can this relay be used in residential environments?

This product is suitable for Class A environments and may cause radio-frequency interference in residential environments, where appropriate measures should be taken.

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Part conditions explained

We want your buying experience to be as seamless as possible. So, here are all of the product descriptions you will see when browsing Marvo, explained a little further:

New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.

New sealed: The product is sealed in its original packaging. It has never been opened or used, ensuring that it's in an untouched state.

New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.

Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.

Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.

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