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Siemens 3SK1112-1BB40
by Siemens
Read verified buyer reviews ↓OverviewThe Siemens 3SK1112-1BB40 Safety Relay Module is a vital component for contemporary industrial automation systems, meticulously engineered to deliver exceptional safety and operational dependability. This powerful yet compact safety relay is specifically designed to enable immediate and secure shutdowns in critical situations, thereby safeguarding both sophisticated machinery and invaluable personnel from potential hazards. Adhering strictly to the stringent SIL3 and PLe safety standards (in accordance with ISO 13849-1), the 3SK1112-1BB40 guarantees unwavering performance in environments where safety is not merely a feature, but an absolute imperative. Its intuitive design allows for straightforward integration and features advanced diagnostic capabilities, ensuring rapid troubleshooting and continuous system monitoring for optimal uptime and peace of mind.Key Features Certified Safety Standards: Achieves SIL3 (Safety Integrity Level 3) and PLe (Performance Level e) ratings, guaranteeing a high degree of risk reduction. Emergency Shutdown Capability: Provides reliable and immediate cessation of machinery operation during emergency events, preventing accidents. Compact & Space-Saving Design: Optimally designed for efficient integration into control panels, minimizing footprint without compromising performance. Advanced Diagnostic Functions: Offers real-time feedback and diagnostic indicators for swift fault detection and simplified maintenance. Versatile Contact Configuration: Equipped with 2 Normally Open (NO) and 2 Normally Closed (NC) relay contacts for flexible control circuit integration. Durable & Reliable Power: Operates efficiently on a standard 24V DC power supply, suitable for a wide range of industrial applications. Easy DIN Rail Mounting: Facilitates quick and secure installation within industrial enclosures, reducing setup time and complexity. Technical Specifications Model: Siemens 3SK1112-1BB40 Type: Safety Relay Module Safety Category: SIL3 (Safety Integrity Level 3) according to IEC 61508 Performance Level: PLe (Performance Level e) according to ISO 13849-1 Rated Voltage: 24V DC Relay Contacts: 2 NO (Normally Open) and 2 NC (Normally Closed) Operating Temperature: -25°C to +60°C Protection Rating: IP20 Mounting Type: DIN rail Diagnostics: Yes, with continuous real-time feedback and status indication. Applications Machine Safety: Implementing secure emergency stop circuits for various industrial machinery, presses, and processing units. Production Lines: Integrated into automated production and assembly lines to ensure worker safety and prevent damage to equipment. Robotics & Automation: Providing critical safety interlocking for robotic cells and automated handling systems. Factory Automation Systems: Essential for safety functions in large-scale automated factories, protecting both personnel and valuable assets. Conveyor Systems: Utilized for emergency shutdown features in material handling and conveyor belt systems. Emergency Stop Systems: The cornerstone for reliable emergency stop functions across a broad spectrum of industrial equipment. Why ChooseWith its dual SIL3 and PLe certifications, the 3SK1112-1BB40 sets a benchmark for safety, providing peace of mind in high-risk environments. Its advanced diagnostic tools significantly reduce downtime by enabling quick fault identification and resolution, ensuring continuous operation. The compact form factor is perfect for modern control panels where space is at a premium, allowing for more efficient system designs. As a Siemens product, you benefit from a legacy of engineering excellence, robust construction, and consistent, long-term performance. Designed for straightforward DIN rail mounting and compatible with standard 24V DC systems, installation and setup are hassle-free.Order NowEnhance the safety and efficiency of your industrial operations. Add the Siemens 3SK1112-1BB40 Safety Relay Module to your system today.FAQWhat safety standards does the Siemens 3SK1112-1BB40 meet?It complies with SIL3 (Safety Integrity Level 3) according to IEC 61508 and PLe (Performance Level e) according to ISO 13849-1.What is the operating voltage for this module?The module operates efficiently on a 24V DC power supply.Can this safety relay be easily integrated into existing systems?Yes, its compact design and DIN rail mounting capability facilitate quick and secure installation and integration within industrial enclosures.
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Siemens 3SK1112-1BB40
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
- Model: Siemens 3SK1112-1BB40
- Type: Safety Relay Module
- Safety Category: SIL3 (Safety Integrity Level 3) according to IEC 61508
- Performance Level: PLe (Performance Level e) according to ISO 13849-1
- Rated Voltage: 24V DC
- Relay Contacts: 2 NO (Normally Open) and 2 NC (Normally Closed)
- Operating Temperature: -25°C to +60°C
- Protection Rating: IP20
- Mounting Type: DIN rail
- Diagnostics: Yes, with continuous real-time feedback and status indication.
Applications
- Machine Safety: Implementing secure emergency stop circuits for various industrial machinery, presses, and processing units.
- Production Lines: Integrated into automated production and assembly lines to ensure worker safety and prevent damage to equipment.
- Robotics & Automation: Providing critical safety interlocking for robotic cells and automated handling systems.
- Factory Automation Systems: Essential for safety functions in large-scale automated factories, protecting both personnel and valuable assets.
- Conveyor Systems: Utilized for emergency shutdown features in material handling and conveyor belt systems.
- Emergency Stop Systems: The cornerstone for reliable emergency stop functions across a broad spectrum of industrial equipment.
Why Choose the 3SK1112-1BB40?
With its dual SIL3 and PLe certifications, the 3SK1112-1BB40 sets a benchmark for safety, providing peace of mind in high-risk environments. Its advanced diagnostic tools significantly reduce downtime by enabling quick fault identification and resolution, ensuring continuous operation. The compact form factor is perfect for modern control panels where space is at a premium, allowing for more efficient system designs. As a Siemens product, you benefit from a legacy of engineering excellence, robust construction, and consistent, long-term performance. Designed for straightforward DIN rail mounting and compatible with standard 24V DC systems, installation and setup are hassle-free.
Availability & Shipping
- ▸In stock: 3SK1112-1BB40 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 3SK1112-1BB40 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.
Related Siemens resources
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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.