Allen Bradley 440R-D22S2 Output Safety Relay

The AB 440R-D22S2 is a Guardmaster safety relay designed for monitoring dual-channel input devices such as emergency stop buttons and optoelectronic safety sensors. Operating at 24V DC, this basic safety relay provides 2 solid-state safety outputs and 1 normally closed (N.C.) auxiliary solid-state output, supporting stop category 0 applications.

This 22.5 mm wide, DIN rail-mountable module is compliant with EN ISO 13849-1 Performance Level e and is suitable for high-integrity safety circuits where quick reaction time and reliability are critical.

Technical Specifications

Model: 440RD22S2
Series: Guardmaster DIS (Dual Input Safety)
Relay Type: Solid-State Safety Relay
Input Channels: 2 Dual Channel Inputs
Safety Outputs: 2 Solid-State Outputs
Auxiliary Output: 1 N.C. Solid-State
Stop Category: 0 (IEC 60204-1)
Application: E-stop circuits, safety light curtains, magnetic safety switches

Electrical Specifications

• Supply Voltage: 24 V DC
• Voltage Type: DC
• Power Consumption: Low-power electronics
• Safety Output Type: Instantaneous, semiconductor (2)
• Auxiliary Output Type: Instantaneous, N.C. semiconductor (1)
• Performance Level: PL e (EN ISO 13849-1)
• SIL Capability: SIL 3 (IEC 61508, via system design)
• Feedback Circuit: Yes
• Start Input: Yes
• Muting Function: No

I/O & Monitoring Capabilities

• Evaluation Inputs: One- and two-channel monitoring
• Monitoring of E-Stops: Yes
• Monitoring of Light Curtains / Optoelectronic Devices: Yes
• Monitoring of Magnetic Switches: Yes
• Monitoring of Position / Proximity Switches: No
• Monitoring of Tactile Sensors: No
• Signal Output (Status): 1 N.C. auxiliary

Mechanical Specifications

• Width: 22.5 mm
• Height: 105.7 mm
• Depth: 113.6 mm
• Mounting Type: DIN Rail
• Plug Connection: Plug-in connectors with detachable clamps
• Enclosure Type: Open-type, IP20 (when mounted in enclosure)

Environmental Specifications

• Operating Temperature: 0°C to 55°C
• Storage Temperature: –40°C to +85°C
• Humidity: 5% to 95% RH (non-condensing)
• Vibration Resistance: IEC 60068-2-6 compliant
• Pollution Degree: 2

Compliance & Certifications

• CE Marked: Yes
• UL / cUL Listed: Yes
• EN ISO 13849-1: Performance Level e
• IEC 61508 Compliant: Yes (via system integration)
• RoHS Compliant: Yes

Key Features & Benefits

✅ Dual-Channel Monitoring. Compatible with E-stops and safety light curtains.

✅ Solid-State Outputs. Fast, reliable switching without mechanical wear.

✅ Compact Form Factor. 22.5 mm housing fits in tight control cabinets.

✅ Auxiliary N.C. Output. For status indication or PLC diagnostics.

✅ PL e Certified. High-integrity safety for critical machine functions.

📦 Order the Allen Bradley 440R-D22S2 from Drive Outlet Megastore

At Drive Outlet Megastore we offer unbeatable Allen Bradley 440R-D22S2 prices. This compact and high-integrity safety relay is ideal for use in emergency stop systems and light curtain monitoring applications.

Check stock now or request a quote.

Precision safety. Proven Rockwell design. — Drive Outlet Megastore