Allen-Bradley 440R-S845AER-NNL MSR57P Speed Monitoring Safety Relay
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Manufacturer AB-SFC
Mfg Catalog # 440R-S845AER-NNL
North Coast Part # 490868


  • Provides DPI configuration ports
  • Includes six N.O. solid-state safety outputs and four solid-state auxiliary outputs
  • Provides 67.5 mm DIN Rail housing
  • Includes removable terminals
  • Includes eight diagnostic LEDs


  • Input: 5 x 1 N.C., 2.N.C., LC, 1 N.O. + 1 N.C.
  • Enclosure: 67.5 mm

Safety Relay Information

  • Relay Model Selected: MSR57P

Safety Relay Data

  • Power Supply: 24V DC
  • Auxiliary Outputs: 4 N.O. Solid State
  • Inputs: 5 x 1 N.C., 2.N.C., LC, 1 N.O. + 1 N.C.
  • Removable Terminals: Removable
  • Reset Type: Automatic/Manual or Manual Monitored
  • Housing Width: 67.5 mm


UPC 61259854460
Item Long Description MSR57P Speed Monitoring Safety Relay
GTiN 00612598544608
Type Speed Monitoring, Basic Device
Applications For Monitoring of Position Switches
Mounting Type Rail
Family Brand Name Allen Bradley
Output 6 N.O Solid State
Power Supply 24V DC
Blade Dimensions 67.5 mm W x 114.5 mm D x 99 mm H
Contact Rating MP and SLS Outputs: 2A/24V DC
Enclosure 67.5 mm
Sub Brand Guardmaster
Voltage 24 VDC

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