Allen Bradley 440R-GL2S2T Guardmaster Safety Relay – GLT, 24V DC, Dual-Channel Input, 2 N.O. Safety Outputs, Time-Delayed Guardlocking Relay

The Allen Bradley 440R-GL2S2T is a Guardmaster Guardlocking Safety Relay (GLT) designed for monitoring safety gates, guardlocking devices, and interlocked access points that require time-delayed unlocking. Operating from a 24V DC supply, the 440R-GL2S2T provides two normally open (N.O.) safety outputs and one non-safety PNP auxiliary output (50mA) for status indication and control feedback.

Engineered for dual-channel safety input evaluation and compliant with Performance Level “e” (EN ISO 13849-1), this relay offers the highest safety integrity for machine guarding systems. Its time-delayed safety output function ensures controlled unlocking after power removal, protecting operators during machine coast-down. The slim 22.5mm housing and DIN rail mounting make it ideal for compact control panels and integrated safety systems.

Technical Specifications

Model: 440R-GL2S2T Allen Bradley
Series: Guardmaster GLT
Product Type: Guardlocking Safety Relay with Time Delay
Supply Voltage: 24V DC
Voltage Type: DC
Input Channels: Dual-channel (2-channel evaluation)
Safety Outputs: 2 N.O. relay contacts
Auxiliary Output: 1 N.O. PNP transistor (50mA, non-safety rated)
Performance Level (EN ISO 13849-1): Level e
Stop Category (IEC 60204): 0
Mounting Type: DIN Rail (35mm top hat)
Connection Type: Plug-in terminal connections with detachable clamps
Dimensions (W x H x D): 22.5 x 105.7 x 113.6 mm

Electrical & Performance Details

• Supply Voltage Range: 24V DC ±10%
• Safety Outputs: 2 N.O. instantaneous contacts
• Auxiliary Output: 1 N.O. PNP transistor, 50mA max (non-safety rated)
• Input Type: Dual-channel guardlocking proximity or interlock inputs
• Stop Function: Category 0 stop (immediate stop without delay)
• Safety Category: Category 4 / Performance Level e
• Feedback Circuit: Yes (for external contactor monitoring)
• Muting Function: No
• Start Input: Yes (supports manual or automatic start)

Mechanical Specifications

• Width: 22.5 mm
• Height: 105.7 mm
• Depth: 113.6 mm
• Mounting: DIN rail (35mm standard)
• Connection: Plug-in connectors with detachable clamps
• Housing: Compact, durable relay enclosure suitable for safety control panels

Environmental & Application Suitability

• Typical Applications: Guardlocking gate switches, access interlocks, and time-delayed unlocking mechanisms
• Stop Category: Category 0 emergency stop and gate lockout
• Monitoring Capability: Dual-channel input monitoring for redundancy and fault detection
• Not Suitable For: Optoelectronic, magnetic, proximity, or tactile sensor monitoring
• Installation Environment: Industrial safety cabinets and machine control enclosures

Compliance & Certifications

• Performance Level: PL e (EN ISO 13849-1)
• Stop Category: 0 (IEC 60204)
• UL / cUL Listed: Yes
• CE Marked: Yes
• RoHS Compliant: Yes

Key Features & Benefits

✅ Dual-channel guardlocking input ensures redundancy and fault tolerance.

✅ Two safety relay outputs provide reliable circuit disconnection.

✅ Time-delayed output function ensures safe, controlled unlocking after stop command.

✅ PNP auxiliary output for machine status indication (non-safety rated).

✅ Compact 22.5mm housing saves valuable DIN rail space.

✅ Meets Performance Level e and Category 4 safety standards.

✅ DIN rail mounting and plug-in terminals simplify installation and servicing.

📦 Order the Allen Bradley 440R-GL2S2T from Drive Outlet Megastore

At Drive Outlet Megastore we offer unbeatable Allen Bradley 440R-GL2S2T prices, with fast UK & EU delivery and expert support for Guardmaster safety relays and guardlocking system integration.

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Enhance operator protection and control reliability with the Allen Bradley 440R-GL2S2T Guardlocking Safety Relay — precision performance from Drive Outlet Megastore.