Safety Relays | RS
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    Safety Relays

    A safety relay is an automation device that monitors for potential errors or faults in machinery or plants and works to prevent injury and reduce risk. If an error occurs, the safety relay initiates the appropriate response to reduce the risk and bring the environment back to a safe, acceptable level.Monitoring processes using safety relays protects both the machinery and the employees, prevents potentially expensive maintenance and equipment replacement, and reduces risk of human injury. Example functions include initiating a controlled pause in machinery or equipment to safely stop movement until an obstacle is removed. They can also be used as an emergency stop mechanism, switching off the power to particular machinery or plants until it is safe to resume power and continue.

    What types of safety relays are there?

    Safety relays can be single function or multi-function. Single function relays monitor for a specific type of activity and are programmed individually to monitor their respective tasks. Multi-function safety relays can monitor different functions and can be used in place of several single function, individual units to monitor the same number of activities. The benefits of using multi-function relays include simpler installation and less wiring as fewer individual units are needed. This also makes more economical use of panel space, additionally giving greater flexibility to make changes within the design or panel as fewer units need to be removed or repositioned.

    Where are safety relays used?

    Safety relays are found across many industries where automation is used within a process or for a whole process. Anyone can integrate a safety relay within a circuit to create a safety circuit without any specific training. They are often found in the following control devices:Two hand controls, Movable guards, Light curtains, light barriers and light grids, Magnetic switches, Safety mats and pressure sensitive mats, Three position devices, Non-contact safety sensors, Safety switches, Emergency stop buttons

    611 Products showing for Safety Relays

    Banner
    Configurable
    20 → 30V
    2
    2
    Safety Switch
    -
    -
    -
    4
    e
    3
    -
    CE, CULus
    -
    -
    116mm
    -
    4
    STB
    51mm
    Schneider Electric
    -
    48 → 240V ac/dc
    2
    2
    Emergency Stop
    -
    -
    Harmony XPS/ Preventa XPS
    -
    -
    -
    Screw
    -
    Yes
    Green Premium
    120mm
    -
    -
    XPSU
    22.5mm
    Schneider Electric
    -
    24V ac/dc
    1
    5
    Emergency Stop
    8
    -
    Harmony XPS/ Preventa XPS
    -
    -
    -
    Spring
    -
    Yes
    Green Premium
    120mm
    -
    -
    XPSU
    45mm
    Siemens
    Configurable
    24V dc
    1
    4
    Time Delay
    -
    Automatic, Monitored
    SIRIUS
    4
    e
    3
    Cage Clamp
    -
    -
    -
    122mm
    -
    -
    3SK1
    22.5mm
    Omron
    -
    24V ac/dc
    2
    3
    Time Delay
    1
    Automatic & Manual
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    G9SA
    -
    Wieland
    -
    24V dc
    2
    7
    Safety Monitoring
    -
    Automatic, Manual, Monitored
    safeRELAY
    4
    e
    -
    Screw
    -
    -
    -
    96.5mm
    -
    -
    SNV 4076SL
    114mm
    Banner
    -
    24V ac/dc
    2
    2
    Two Hand Control
    -
    -
    Duo Touch
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    AT
    -
    Phoenix Contact
    -
    24V dc
    2
    2
    Emergency Stop
    2
    Automatic & Manual
    PSRmini
    4
    -
    3
    Cage Clamp
    -
    -
    -
    114.5mm
    -
    -
    PSR-MC30-2NO-1DO-24DC-SP
    12.5mm
    Phoenix Contact
    -
    24V dc
    2
    2
    Emergency Stop
    0
    -
    PSRmini
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    PSR-MC31
    -
    Phoenix Contact
    -
    24V ac/dc
    2
    3
    Emergency Stop
    1
    -
    PSRclassic
    4
    e
    3
    Screw
    cUL Listed, CULus, UL Listed
    -
    -
    114.5mm
    -
    -
    PSR-SCP- 24UC/ESL4/3X1/1X2/B
    22.5mm
    Schmersal
    -
    24V ac/dc
    1, 2
    3
    Emergency Stop
    1
    Automatic
    PROTECT SRB
    4
    e
    3
    Screw
    -
    -
    -
    121mm
    -
    -
    SRB 301ST
    22.5mm
    Dold
    -
    24V dc
    2
    2
    Two Hand Control
    -
    -
    Safemaster
    3
    e
    3
    Screw
    -
    -
    -
    121mm
    -
    -
    BD 5980N
    45mm
    Schneider Electric
    -
    24V dc
    -
    4
    Expansion Module
    -
    -
    Modicom MCM
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    XPS MCM
    -
    IDEM
    -
    24V ac/dc
    1
    3
    Emergency Stop
    1
    Automatic
    Viper
    4
    e
    3
    Plug In
    -
    -
    -
    99mm
    -
    -
    SCR-21-i Pluggable Terminals
    114mm
    Schmersal
    -
    24V ac/dc
    1, 2
    4
    Emergency Stop
    1
    Automatic
    PROTECT SRB
    4
    e
    3
    Screw
    IEC60947-1
    -
    -
    121mm
    -
    -
    SRB 301AN
    22.5mm
    Dold
    -
    24V dc
    1
    4
    Emergency Stop
    -
    -
    Safemaster
    2
    d
    2
    -
    -
    -
    -
    121mm
    -
    -
    BG 5924
    22.5mm
    ABB Jokab
    Configurable
    24V dc
    2
    4
    Time Delay
    4
    Multi-Reset
    Sentry
    4
    e
    3
    Screw
    CCCs, CE, CULus, TUV
    -
    -
    120mm
    -
    4
    SSR32
    120mm
    Siemens
    -
    110 → 240V ac/dc
    2
    4
    Expansion Module
    1
    -
    SIRIUS
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    3SK1
    -
    Pilz
    -
    115V ac
    2
    3
    Two Hand Control
    1
    Manual
    PNOZ X
    4
    e
    3
    Screw
    -
    -
    -
    121mm
    -
    -
    P2HZ X1
    45mm
    Dold
    -
    24V ac/dc
    1, 2
    3
    Emergency Stop
    -
    -
    Safemaster
    4
    e
    3
    -
    -
    -
    -
    118mm
    -
    -
    BH 5928
    45mm
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