*Image shown is a representation only. Actual product may vary.
Allen-Bradley 440R-D22S2
by Allen-Bradley
Read verified buyer reviews ↓OverviewThe Allen-Bradley 440R-D22S2 Guardmaster Safety Relay is engineered for advanced safety applications in industrial automation, providing a robust solution for complex safety function implementation. This cutting-edge safety relay boasts two dual-channel universal inputs, offering unparalleled flexibility for connecting a diverse range of safety devices. Its configurable AND/OR logic, easily adjusted via a rotary switch, allows for precise customization to meet the unique requirements of your specific application. Designed for efficiency and reliability, the 440R-D22S2 integrates a single-wire safe input and output, alongside one normally closed (N.C.) solid-state immediate auxiliary output and two normally open (N.O.) immediate safety outputs. Operating seamlessly on a 24V DC power supply, this model ensures fast response times crucial for critical safety functions. Removable terminals simplify wiring and maintenance, while configurable automatic/manual or manual monitored reset options provide operational flexibility. The Guardmaster 440R-D22S2 is a testament to Allen-Bradley's commitment to safety, innovation, and performance, making it an indispensable component for modern industrial environments.Key Features Advanced Guardmaster Safety: Part of the renowned Guardmaster series, ensuring superior safety interlocking and reliable monitoring for critical industrial processes. Dual-Channel Universal Inputs: Equipped with two versatile dual-channel universal inputs, providing extensive compatibility with various safety devices and enhanced design flexibility. Configurable AND/OR Logic: Features an intuitive rotary switch for easy configuration of AND/OR logic, enabling precise control over input conditions and adaptable safety system design. Efficient Single-Wire Connectivity: Includes dedicated single-wire safe input and output, significantly simplifying system wiring and reducing installation complexity and costs. Rapid Immediate Safety Outputs: Delivers two normally open (N.O.) immediate safety outputs and one auxiliary normally closed (N.C.) solid-state output for lightning-fast response to safety events. Flexible Reset Options: Offers configurable automatic/manual or manual monitored reset functionality, allowing operators to choose the most suitable reset behavior for their application. Simplified Installation & Maintenance: Designed with removable terminals for straightforward wiring, installation, and hassle-free maintenance, ensuring minimal downtime. Technical Specifications Product Type: Safety Relay Catalog Number: 440R-D22S2 Series: Guardmaster Inputs: 2 Dual-Channel Universal Inputs, 1 Single-Wire Safe Input Outputs: 2 N.O. Immediate Safety Outputs, 1 Single-Wire Safe Output, 1 N.C. Solid-State Immediate Auxiliary Output Logic: Configurable AND/OR (via Rotary Switch) Power Supply: 24V DC Reset Function: Configurable Automatic/Manual or Manual Monitored Applications Complex Machine Safety Control: Ideal for managing intricate safety protocols in multi-functional machinery and automated production lines. Advanced Safety Interlock Systems: Perfect for systems requiring sophisticated input logic and multiple safety device integration. Emergency Stop Deployments: Provides reliable and immediate shutdown capabilities for critical emergency stop circuits. Safety Gate & Perimeter Monitoring: Ensures secure operation by monitoring safety gates, light curtains, and other perimeter access points. Robotics & Automated Workcells: Essential for maintaining safe operating conditions in environments utilizing industrial robots and automated workcells. Why ChooseWith dual universal inputs and configurable logic, the 440R-D22S2 adapts to a vast array of safety requirements, making it a highly flexible choice. Single-wire safe input and output features reduce wiring complexity, leading to faster installation and easier troubleshooting.Order NowEnhance your industrial safety protocols with the Allen-Bradley 440R-D22S2 Guardmaster Safety Relay. Contact us today for pricing and availability to integrate this advanced safety solution into your operations.FAQWhat is the primary function of the Allen-Bradley 440R-D22S2?It\
USA — Free FedEx Priority & UPS Ground · Worldwide shipping available
For more quantity please contact Customer Service
Fast Shipping
Dispatched quickly on in-stock items via UPS, FedEx & DHL worldwide.
Availability
Thousands of parts in stock — ready for immediate dispatch from Florida.
Payment Flexibility
AMEX, Visa, MasterCard, PayPal, Discover and wire transfer accepted.
Allen-Bradley 440R-D22S2
Overview
This is a genuine Allen-Bradley 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 Allen-Bradley catalog part
- Tested before shipment
- Backed by PalmPartsSolution warranty
- Cross-reference and revision assistance available
- Compatible with the broader Allen-Bradley automation ecosystem
Compatibility
When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley 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 Allen-Bradley 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 Allen-Bradley platform with documented conversion notes
Contact our engineering team if you need help choosing between these tracks.
Technical Specifications
- Product Type: Safety Relay
- Catalog Number: 440R-D22S2
- Series: Guardmaster
- Inputs: 2 Dual-Channel Universal Inputs, 1 Single-Wire Safe Input
- Outputs: 2 N.O. Immediate Safety Outputs, 1 Single-Wire Safe Output, 1 N.C. Solid-State Immediate Auxiliary Output
- Logic: Configurable AND/OR (via Rotary Switch)
- Power Supply: 24V DC
- Reset Function: Configurable Automatic/Manual or Manual Monitored
Applications
- Complex Machine Safety Control: Ideal for managing intricate safety protocols in multi-functional machinery and automated production lines.
- Advanced Safety Interlock Systems: Perfect for systems requiring sophisticated input logic and multiple safety device integration.
- Emergency Stop Deployments: Provides reliable and immediate shutdown capabilities for critical emergency stop circuits.
- Safety Gate & Perimeter Monitoring: Ensures secure operation by monitoring safety gates, light curtains, and other perimeter access points.
- Robotics & Automated Workcells: Essential for maintaining safe operating conditions in environments utilizing industrial robots and automated workcells.
Why Choose the 440R-D22S2?
With dual universal inputs and configurable logic, the 440R-D22S2 adapts to a vast array of safety requirements, making it a highly flexible choice. Single-wire safe input and output features reduce wiring complexity, leading to faster installation and easier troubleshooting.
Availability & Shipping
- ▸In stock: 440R-D22S2 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 440R-D22S2 ships with a 1-Year PALM Parts warranty and a 30-day return window.
Frequently Asked Questions — Allen-Bradley
Machine down? We ship parts the same day.
New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.
Related Allen-Bradley resources
What Verified Buyers Say
No reviews yet for this product. Be the first verified buyer to share your experience — we email a review invitation after every purchase.
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.