440R-B23020

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Overview of Allen-Bradley 440R-B23020 Minotaur MSR5T Safety Relay

The Allen-Bradley 440R-B23020 is a Minotaur MSR5T safety relay designed for emergency stop, guard door interlock, and restart interlock applications requiring reliable and compact safety control. Operating on 24 V AC/DC power, it provides three normally open (N.O.) safety outputs and one normally closed (N.C.) auxiliary output for status indication. The relay supports both automatic and manual reset operations to ensure safe and controlled restart after an emergency event.

Key Features of 440R-B23020

  • Power supply: 24 V AC/DC, with a tolerance of 0.85 to 1.1 times rated voltage.
  • Inputs: One 2 N.C. input for safety device connection.
  • Outputs: Three N.O. safety outputs and one N.C. auxiliary output.
  • Reset: Automatic and manual reset modes supported.
  • Safety standards compliance: ISO 13849-1 Cat. 4, SIL CL 3 according to IEC 62061 and IEC 61508.
  • Safety response time: Approximately 30 ms.
  • Contact ratings: AC-15 – 6 A @ 250 V AC, DC-13 – 3 A @ 24 V DC, UL rating B 300.
  • Mechanical life: 10 million cycles; Electrical life: up to 1 million cycles at specified loads.
  • Enclosure width: 22.5 mm for compact DIN rail mounting.
  • Operating temperature range: -5 to +55 °C (23 to 131 °F).
  • Mounting: 35 mm DIN rail within an enclosure rated at least IP54.

Technical Specifications

Specification Details
Power Supply 24 V AC/DC (0.85–1.1 x rated)
Inputs 1 x 2 N.C. monitored
Safety Outputs 3 x N.O.
Auxiliary Output 1 x N.C.
Reset Automatic/manual monitored
Safety Category Category 4, Performance Level e (ISO 13849-1)
SIL Level SIL CL3
Response Time ~30 ms
Contact Ratings AC-15: 6 A @ 250 V AC, DC-13: 3 A @ 24 V DC, UL B300
Mechanical Life 10 million cycles
Electrical Life Up to 1 million cycles (depending on load)
Enclosure Width 22.5 mm
Operating Temperature -5 to +55 °C (23 to 131 °F)
Mounting 35 mm DIN rail (IP54 enclosure or better)
Weight Approximately 180 grams (0.4 lbs)

Applications / Use Cases

The 440R-B23020 safety relay is ideal for protecting personnel and machinery in industrial automation environments through emergency stop, guard door monitoring, and controlled restart functions. Its compact size and compliance with high safety standards make it suitable for machine safety circuits and safety control panels.

440R-B23020

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Does it come with a warranty?

Yes, All products are offered wth 1-Year warranty.

What is the condition of the product?

All products sold are New & Unused.

How fast is shipping?

All products are delivered within 2-8 business days depending on our stock location.

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