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Siemens 3SK1111-1AW20
by Siemens
Read verified buyer reviews ↓OverviewThe Siemens 3SK1111-1AW20 SIRIUS 3SK1 Basic Safety Relay is an essential device for maintaining stringent industrial safety protocols. Specifically engineered for crucial applications, this relay delivers dependable monitoring and control within various safety circuits, including emergency shut-offs, protective interlocks, and light curtains. Powered by a 24V DC supply, it features a precise configuration of two normally open (NO) and one normally closed (NC) contacts, vital for guaranteeing fail-safe operation and adherence to the most rigorous safety benchmarks. Its integration into industrial automation systems significantly enhances both protection and operational integrity.Key Features Emergency Stop Capability: Facilitates immediate and secure machinery shutdown during hazardous events. Precise Contact Arrangement: Incorporates two normally open and one normally closed contact for redundant and fail-safe oversight. Consistent 24V DC Operation: Guarantees stable and dependable performance within industrial control setups. Modular Expansion Options: Compatible with other SIRIUS 3SK safety modules for expandable safety solutions. Industrial-Grade Durability: Constructed to endure demanding industrial environments, ensuring extended service life and dependability. High Safety Standard Compliance: Certified to SIL 3 (IEC 61508) and PL e (ISO 13489-1) for verified safety performance. DIN Rail Installation: Allows for straightforward and secure mounting inside control cabinets. Technical Specifications Product Category: SIRIUS 3SK1 Basic Safety Relay Part Number: 3SK1111-1AW20 Operating Power: 24V DC Contact Configuration: 2 Normally Open (NO), 1 Normally Closed (NC) Mounting Method: DIN Rail Safety Standards Met: SIL 3 (IEC 61508) and PL e (ISO 13489-1) Applications Emergency Stop Systems: Crucial for swiftly removing power to equipment during urgent situations. Safety Interlock Monitoring: Confirms that guards and doors are securely closed before machinery activation. Light Curtain Implementation: Provides safety oversight for access control and danger zone detection. Press and Punch Machine Protection: Enhances operator safety on high-risk machinery. Automated Production Line Safety: Essential for upholding safety in intricate and high-speed manufacturing settings. Why Choose This Model?Unwavering SafetyAchieve peak levels of machine and personnel safety with certifications up to SIL 3 and PL e.Siemens ReliabilityLeverage Siemens' esteemed reputation for engineering excellence and enduring industrial components.Adaptable ApplicationSuitable for a wide array of safety-critical control functions across diverse industries.Effortless IntegrationDesigned for simple installation and expansion with existing SIRIUS 3SK systems.Optimized PerformanceExperience consistent and accurate operation, minimizing downtime and boosting productivity.Order NowEnhance your industrial safety standards with the Siemens 3SK1111-1AW20 SIRIUS 3SK1 Basic Safety Relay. Purchase yours today to guarantee reliable emergency stop functionality, robust interlock monitoring, and uncompromising machine safety in your operations. Invest in operational excellence and peace of mind.FAQWhat is the primary function of the Siemens 3SK1111-1AW20 safety relay?This safety relay is designed to provide reliable monitoring and control in industrial safety circuits, including emergency stops, safety interlocks, and light curtains, ensuring fail-safe operation.What are the power requirements for this safety relay?The Siemens 3SK1111-1AW20 operates on a 24V DC power supply, ensuring stable and consistent performance within industrial control systems.What safety standards does this relay comply with?The relay is certified to meet high safety standards, specifically SIL 3 (IEC 61508) and PL e (ISO 13489-1), demonstrating its proven safety performance.Can this safety relay be expanded or integrated with other systems?Yes, it features modular expandability, allowing for seamless integration with other SIRIUS 3SK safety modules for scalable safety solutions.What types of applications benefit most from this safety relay?It is ideally suited for applications such as emergency stop systems, safety interlock monitoring, light curtain integration, press and punch machine safety, and automated production lines.
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Siemens 3SK1111-1AW20
Overview
This is a genuine Siemens component. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.
Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.
Key Features
- Genuine Siemens catalog part
- Tested before shipment
- Backed by PalmPartsSolution warranty
- Cross-reference and revision assistance available
- Compatible with the broader Siemens automation ecosystem
Compatibility
When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Siemens equipment. Where applicable, confirm:
- Input/output voltage and current rating
- Communication protocol and network role
- Mounting form factor and footprint
- Operating temperature, humidity, and IP rating
- Required certifications (UL, CE, ATEX, marine, etc.)
Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.
Replacement Information
Three ways to source this part through PalmPartsSolution:
- Exact replacement — same Siemens catalog number, new or refurbished, tested and warrantied
- Form-fit-function equivalent — alternate revision or build that drops in without code changes
- Engineered migration — current-generation Siemens platform with documented conversion notes
Contact our engineering team if you need help choosing between these tracks.
Technical Specifications
- Product Category: SIRIUS 3SK1 Basic Safety Relay
- Part Number: 3SK1111-1AW20
- Operating Power: 24V DC
- Contact Configuration: 2 Normally Open (NO), 1 Normally Closed (NC)
- Mounting Method: DIN Rail
- Safety Standards Met: SIL 3 (IEC 61508) and PL e (ISO 13489-1)
Applications
- Emergency Stop Systems: Crucial for swiftly removing power to equipment during urgent situations.
- Safety Interlock Monitoring: Confirms that guards and doors are securely closed before machinery activation.
- Light Curtain Implementation: Provides safety oversight for access control and danger zone detection.
- Press and Punch Machine Protection: Enhances operator safety on high-risk machinery.
- Automated Production Line Safety: Essential for upholding safety in intricate and high-speed manufacturing settings.
Why Choose the 3SK1111-1AW20?
Unwavering Safety
Achieve peak levels of machine and personnel safety with certifications up to SIL 3 and PL e.
Siemens Reliability
Leverage Siemens' esteemed reputation for engineering excellence and enduring industrial components.
Adaptable Application
Suitable for a wide array of safety-critical control functions across diverse industries.
Effortless Integration
Designed for simple installation and expansion with existing SIRIUS 3SK systems.
Optimized Performance
Experience consistent and accurate operation, minimizing downtime and boosting productivity.
Availability & Shipping
- ▸In stock: 3SK1111-1AW20 ready for immediate dispatch from our Florida warehouse.
- ▸Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
- ▸Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
- ▸Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
- ▸Buy with confidence: Every 3SK1111-1AW20 ships with a 1-Year PALM Parts warranty and a 30-day return window.
Frequently Asked Questions — Siemens
Machine down? We ship parts the same day.
New, surplus, and refurbished Siemens inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.
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Independent Supplier Notice
PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.
Product Condition & Firmware
All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.