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Safety Relays Single-Function Delayed
Allen‑Bradley

Our Single-function Safety Relays with Delayed Outputs are used in applications where power must be maintained for a fixed duration after an input signal is received.
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440R-M23092 Guardmaster MSR138.1DP Safety Relay product image
440R-M23092 Guardmaster MSR138.1DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138.1DP, 2 N.O. Delayed Safety Outputs, 1.5 to 30 seconds Delayed Timing, 24V AC/DC
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440R-M23140 Guardmaster MSR138DP Safety Relay product image
440R-M23140 Guardmaster MSR138DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138DP, 3 N.O. Delayed Safety Outputs, 0.15 to 3 seconds Delayed Timing, 230V AC
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440R-M23143 Guardmaster MSR138DP Safety Relay product image
440R-M23143 Guardmaster MSR138DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138DP, 3 N.O. Delayed Safety Outputs, 0.15 to 3 seconds Delayed Timing, 24V AC/DC
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440R-M23147 Guardmaster MSR138DP Safety Relay product image
440R-M23147 Guardmaster MSR138DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138DP, 3 N.O. Delayed Safety Outputs, 0.5 to 10 seconds Delayed Timing, 24V AC/DC
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440R-M23151 Guardmaster MSR138DP Safety Relay product image
440R-M23151 Guardmaster MSR138DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138DP, 3 N.O. Delayed Safety Outputs, 1.5 to 30 seconds Delayed Timing, 24V AC/DC
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440R-S23174 Guardmaster CU4 Safety Relay product image
440R-S23174 Guardmaster CU4 Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - CU4, 2 N.O. Delayed Safety Outputs, 0.5 to 10 seconds Delayed Timing, 24V AC/DC
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440R-M23080 Guardmaster MSR138DP Safety Relay product image
440R-M23080 Guardmaster MSR138DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138DP, 3 N.O. Delayed Safety Outputs, 1s Delayed Timing, 115V AC
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440R-M23084 Guardmaster MSR138.1DP Safety Relay product image
440R-M23084 Guardmaster MSR138.1DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138.1DP, 2 N.O. Delayed Safety Outputs, 0.15 to 3 seconds Delayed Timing, 24V AC/DC
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440R-M23085 Guardmaster MSR138.1DP Safety Relay product image
440R-M23085 Guardmaster MSR138.1DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138.1DP, 2 N.O. Delayed Safety Outputs, 0.5 to 10 seconds Delayed Timing, 230V AC
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440R-M23086 Guardmaster MSR138.1DP Safety Relay product image
440R-M23086 Guardmaster MSR138.1DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138.1DP, 2 N.O. Delayed Safety Outputs, 0.5 to 10 seconds Delayed Timing, 115V AC
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440R-M23081 Guardmaster MSR138.1DP Safety Relay product image
440R-M23081 Guardmaster MSR138.1DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138.1DP, 2 N.O. Delayed Safety Outputs, 0.15 to 3 seconds Delayed Timing, 230V AC
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440R-M23082 Guardmaster MSR138.1DP Safety Relay product image
440R-M23082 Guardmaster MSR138.1DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138.1DP, 2 N.O. Delayed Safety Outputs, 0.15 to 3 seconds Delayed Timing, 115V AC
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440R-M23088 Guardmaster MSR138.1DP Safety Relay product image
440R-M23088 Guardmaster MSR138.1DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138.1DP, 2 N.O. Delayed Safety Outputs, 0.5 to 10 seconds Delayed Timing, 24V AC/DC
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440R-M23089 Guardmaster MSR138.1DP Safety Relay product image
440R-M23089 Guardmaster MSR138.1DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138.1DP, 2 N.O. Delayed Safety Outputs, 1.5 to 30 seconds Delayed Timing, 230V AC
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440R-M23090 Guardmaster MSR138.1DP Safety Relay product image
440R-M23090 Guardmaster MSR138.1DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138.1DP, 2 N.O. Delayed Safety Outputs, 1.5 to 30 seconds Delayed Timing, 115V AC
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440R-M23141 Guardmaster MSR138DP Safety Relay product image
440R-M23141 Guardmaster MSR138DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138DP, 3 N.O. Delayed Safety Outputs, 0.15 to 3 seconds Delayed Timing, 115V AC
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440R-M23143S Guardmaster MSR138DP Safety Relay product image
440R-M23143S Guardmaster MSR138DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138DP, 3 N.O. Delayed Safety Outputs, 0.15 to 3 seconds Delayed Timing, 24V AC/DC
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440R-M23145 Guardmaster MSR138DP Safety Relay product image
440R-M23145 Guardmaster MSR138DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138DP, 3 N.O. Delayed Safety Outputs, 0.5 to 10 seconds Delayed Timing, 115V AC
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440R-M23147S MSR138DP Time Delay safety relay product image
440R-M23147S MSR138DP Time Delay safety relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138DP, 3 N.O. Delayed Safety Outputs, 0.5 to 10 seconds Delayed Timing, 24V AC/DC
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440R-M23148 Guardmaster MSR138DP Safety Relay product image
440R-M23148 Guardmaster MSR138DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138DP, 3 N.O. Delayed Safety Outputs, 1.5 to 30 seconds Delayed Timing, 230V AC
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440R-M23149 Guardmaster MSR138DP Safety Relay product image
440R-M23149 Guardmaster MSR138DP Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - MSR138DP, 3 N.O. Delayed Safety Outputs, 1.5 to 30 seconds Delayed Timing, 115V AC
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440R-S23173 Guardmaster CU4 Safety Relay product image
440R-S23173 Guardmaster CU4 Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - CU4, 2 N.O. Delayed Safety Outputs, 0.15 to 3 seconds Delayed Timing, 24V AC/DC
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440R-S23175 Guardmaster CU4 Safety Relay product image
440R-S23175 Guardmaster CU4 Safety Relay
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Monitoring Safety Relays w/ Delayed Outputs - CU4, 2 N.O. Delayed Safety Outputs, 1.5 to 30 seconds Delayed Timing, 24V AC/DC
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Overview Chevron DownChevron Down
Allen Bradley

Our Single-function Safety Relays with Delayed Outputs are used in applications where power must be maintained for a fixed duration after an input signal is received. For example, driving a switch to maintain a guard door in the locked position for a fixed duration after a stop button is pressed.

  • Provides expansion modules with timing functions for the Guardmaster® safety relays and the MSR relay family
  • Increases the number of outputs while retaining the same integrity as the base unit
  • Offers multiple input/output configurations

Additional Information

Protect your people, productivity, and environment with our Safety Components

and integrated Safety Solutions
. We understand your factory floor challenges and can help you meet your goals with one of the broadest safety portfolios in the industry.


Certifications
C-TICK CertificationC-TICK Certification
UL Listed Component Mark Canadian and United States RequirementsUL Listed Component Mark Canadian and United States Requirements
FS Engineer (TÜV Rheinland) CertificateFS Engineer (TÜV Rheinland) Certificate
UK Conformity Assessed UK Conformity Assessed

CU4

  • BG
  • CE Marked for all applicable directives
  • c-Tick
  • cULus Listed
  • UKCA Marked for all applicable regulations

MSR38D/DP

  • CE Marked for all applicable directives
  • c-Tick
  • cULus Listed
  • TÜV Certified
  • UKCA Marked for all applicable regulations

MSR138DP

  • CE Marked for all applicable directives
  • c-Tick
  • cULus Listed
  • TÜV Certified
  • UKCA Marked for all applicable regulations

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