Guardmaster Safety Relays
Guardmaster safety relays for hardwired machine safety functions such as emergency stop, access guarding, light curtains and interlock monitoring circuits. Source original Allen-Bradley safety relay modules, expansion bases and legacy replacements no longer held by mainstream distribution.
Product family Safety ProductsModels listed 137Availability Available to quote

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| Catalog Number | Series / Type | Description | Price & Availability | Product Page |
|---|---|---|---|---|
| 440C-CR30-22BBB | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440C-CR30-22BBB is a Guardmaster 440C-CR30 Safety Relay, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $368.63Available to quote | View product → |
| 440R-A17234 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-A17234 is a MSR300 Terminators from the Guardmaster MSR Safety Relay family, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $14.03Available to quote | View product → |
| 440R-A23228 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-A23228 is a Guardmaster Safety Relay Accessory, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $16.11Available to quote | View product → |
| 440R-ACABL1 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-ACABL1 is a MSR42 Safety Relay Extension Cable, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $8.41Available to quote | View product → |
| 440R-ACABL2 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-ACABL2 is a Safety Relay MSR42 Extension Cable 2, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $14.84Available to quote | View product → |
| 440R-ATP4 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-ATP4 is a Guardmaster Safety Relay Screw Terminal Kit from the Guardmaster MSR Safety Relay Accessory / Repair Part family, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $17.45Available to quote | View product → |
| 440R-ATSC4 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-ATSC4 is a Guardmaster Safety Relay Spring Clamp Terminal Kit, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $17.45Available to quote | View product → |
| 440R-C23136 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-C23136 is a Guardmaster Msr131Rtp Safety Relay, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $168.67Available to quote | View product → |
| 440R-C23137 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-C23137 is a Guardmaster Msr131Rtp Safety Relay, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $168.67Available to quote | View product → |
| 440R-C23139 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-C23139 is a Guardmaster Msr131Rtp Safety Relay, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $143.16Available to quote | View product → |
| Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-D22R2 is a Guardmaster Dual Input Safety Relay, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $170.99Available to quote | View product → | |
| Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-D22R2 is a Guardmaster Dual Input Safety Relay, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $170.99Available to quote | View product → | |
| 440R-D22S2 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-D22S2 is a Guardmaster Dual Input Ss Safety Relay, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $157.07Available to quote | View product → |
| 440R-D23163 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-D23163 is a Guardmaster Msr125H Safety Relay, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $100.27Available to quote | View product → |
| 440R-D23164 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-D23164 is a Guardmaster Msr125H Safety Relay, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $100.27Available to quote | View product → |
| 440R-D23166 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-D23166 is a Guardmaster Msr125H Safety Relay, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $89.84Available to quote | View product → |
| 440R-D23168 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-D23168 is a Guardmaster Msr125Hp Safety Relay, designed to monitor safety functions such as emergency stop, guard switching and light curtains. Rated 125. | $107.81Available to quote | View product → |
| 440R-D23169 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-D23169 is a Guardmaster Msr125Hp Safety Relay, designed to monitor safety functions such as emergency stop, guard switching and light curtains. Rated 125. | $102.59Available to quote | View product → |
| 440R-D23171 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-D23171 is a Guardmaster Msr125Hp Safety Relay, designed to monitor safety functions such as emergency stop, guard switching and light curtains. Rated 125. | $88.68Available to quote | View product → |
| 440R-D23201 | Guardmaster Safety RelaysProduct model | The Allen-Bradley 440R-D23201 is a Guardmaster Msr35H Safety Relay, designed to monitor safety functions such as emergency stop, guard switching and light curtains. | $139.11Available to quote | View product → |
About the Guardmaster Safety Relays Family
Guardmaster safety relays for hardwired machine safety functions such as emergency stop, access guarding, light curtains and interlock monitoring circuits. Source original Allen-Bradley safety relay modules, expansion bases and legacy replacements no longer held by mainstream distribution.
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