# Allen-Bradley 440R-M23088 GuardMaster MSR138 Safety Relay, 24V AC/DC, SIL 3, Light Beam/Curtain Interface - MROSupply.com

***Allen-Bradley 440R-M23088 GuardMaster MSR138 safety relay module, Bulletin 440R, designed for interfacing with safety light beams, curtains, and safety switches. Operates on 24V AC/DC supply, rated for SIL 3 applications, providing monitored safety output for reliable safety circuit monitoring and control in industrial automation systems.***



## Product details:

- Catalog number: 440R-M23088
- SKU: 5702041
- Price: ***$768.00*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Allen Bradley](https://www.mrosupply.com/brands/allen-bradley/)
- Category: 
    - [Contactor Parts & Accessories](htts://www.mrosupply.com/electrical/starters-and-contactors/contactor-parts-accessories/)
    - [Starters and Contactors](htts://www.mrosupply.com/electrical/starters-and-contactors/)
    - [Electrical](htts://www.mrosupply.com/electrical/)
- Unit of measure: each
- Weight: 0.001 lb
- UPC: 611320826678
- Returns: Yes


## Product images:
- https://static.mrosupply.com/images/noimage.webp


## Product attributes;

  
- Auxiliary contacts: 1
  

  
- Depth: 45mm
  

  
- Function: Light beam/curtain, safety switch/interlock
  

  
- Length: 114.5mm
  

  
- Number of channels: 1
  

  
- Performance level: e
  

  
- PL ISO 13849-1: e
  

  
- Range: Minotaur
  

  
- Reset method: Automatic, manual, monitored
  

  
- Safety category ISO 13849-1: 4
  

  
- Safety contacts: 2
  

  
- Series: MSR138.1DP
  

  
- SIL IEC 61508: 3
  

  
- Supply voltage: 24V ac/dc
  

  
- Terminal type: Screw
  

  
- Width: 99mm
  
## Product documents / software:

- [Specification sheet](https://documents.mrosupply.com/product_documents/57/02/5702041/SPEC_47785564_SpecificationSheet_9jBTUYg.pdf)

## Product's reviews:
- Perfect - Excellent transaction, will buy from again, the website and checking out process was "Perfect".
- Pressure switch - Very easy web site. I ordered my part and got in quick. My customer was happy.
- Exellant - same as described, delivered on time.
thank you
- Easy and quick - Thanks.