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Allen-Bradley 440-EM4R2D Guardmaster Safety Relay
Allen-Bradley 440-EM4R2D Guardmaster Safety Relay
Brand/Manufacturer: Allen-Bradley
Order Number: 440-EM4R2D
Type: Safety Relays
Country of Origin: USA
Condition: Original Brand
Lead Time: Available in stock
Payment Term: 100% TT In Advance
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Description
The Allen-Bradley 440R-EM4R2D, also cataloged as the 440R-EM4R2D Guardmaster Safety Relay, operates as a dedicated hardware component for emergency stop and interlock circuit evaluation within industrial safety control systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 440R-EM4R2D |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.30 kg |
| Dimensions | Standard DIN-rail mount safety relay enclosure profile |
| Operating Temp | -10 deg C to +55 deg C |
| Power Consumption | 24 VAC/DC control supply |
| Safety Outputs | Force-guided relay contacts |
| Auxiliary Outputs | Diagnostic monitoring contacts |
| Module Type | Guardmaster Safety Relay |
Deterministic Safety Networks and Firmware Synchronization
The safety relay evaluates redundant dual-channel inputs from emergency stop buttons and safety gates, maintaining high-speed logic execution across Profinet and EtherNet/IP deterministic networks. Engineered to enforce immediate de-energization of downstream actuators upon fault detection, the internal circuit architecture provides galvanic isolation and cross-fault monitoring. Full firmware flash compatibility with safety-rated controllers guarantees synchronized diagnostic reporting and reliable restart interlock management during machine cycling.
Frequently Asked Questions
Q: What supply voltage does the 440R-EM4R2D safety relay require for operation?
A: The relay is designed to operate on a standard 24 VAC/DC control power supply.
Q: Can the safety outputs be connected directly to high-current motor loads?
A: No. Safety relay output contacts should interface with dedicated safety contactors or interposing relays configured with appropriate surge suppression for inductive loads.
Field Installation Guidelines
Mount the relay securely onto a standard 35 mm DIN rail inside an enclosure rated IP54 or higher to protect against environmental contamination. Route all safety input and output wiring in dedicated conduits separated from high-voltage power lines to prevent electromagnetic interference. Verify that all terminal screws are torqued correctly to maintain low-resistance connections and reliable mechanical retention under continuous industrial vibration.
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Testimonials
Fast Delivery, Excellent Quality
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
Reliable Partner for Original Parts
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Professional Service with After-Sales Support"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
Trusted Source for Industrial Automation Spares
We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson
We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson