# Allen-Bradley 440R-S12R2 GuardMaster MSR127 Safety Relay 24V DC 2 Safety Input Channels SIL 3 DIN-Rail Mount - MROSupply.com

***Allen-Bradley 440R-S12R2 GuardMaster MSR127 safety relay, 24V DC supply, two safety input channels, SIL 3 rated for monitoring light curtains, safety mats, and interlock switches. Compact DIN-rail mount design integrates into safety control circuits for reliable machine guarding and personnel protection in industrial environments.***



## Product details:

- Catalog number: 440R-S12R2
- SKU: 5733537
- Price: ***$2,686.56*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Allen Bradley](https://www.mrosupply.com/brands/allen-bradley/)
- Category: 
    - [Safety Relays](htts://www.mrosupply.com/electrical/relays/safety-relays/)
    - [Relays](htts://www.mrosupply.com/electrical/relays/)
    - [Electrical](htts://www.mrosupply.com/electrical/)
- Unit of measure: each
- Weight: 0.450 lb
- UPC: 885630181677
- Returns: Yes


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


## Product attributes;

  
- Auxiliary contacts: 1
  

  
- Configurable: Yes
  

  
- Depth: 119.4mm
  

  
- Function: Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock
  

  
- Length: 113.6mm
  

  
- Number of channels: 2
  

  
- PL ISO 13849-1: E
  

  
- Reset method: Automatic, manual, monitored
  

  
- Safety category ISO 13849-1: 4
  

  
- Safety contacts: 2
  

  
- Series: 440-R
  

  
- SIL IEC 61508: 3
  

  
- Supply voltage: 24V DC
  

  
- Terminal type: Screw
  

  
- Width: 22.5mm
  
## Product documents / software:

- [Datasheet](https://documents.mrosupply.com/product_documents/57/33/5733537/0900766b81425162_mboujFM.pdf)
- [Machine Guarding and Safety Range Overview](https://documents.mrosupply.com/product_documents/57/33/5733537/0900766b81451efb_qunA5w1.pdf)
- [Safety Relays Brochure](https://documents.mrosupply.com/product_documents/57/33/5733537/A700000007719589.pdf)
- [Safety Relays User Manual](https://documents.mrosupply.com/product_documents/57/33/5733537/A700000007719585_AxS0CkN.pdf)

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