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Smart Relays

Smart relays are small-scale PLCs that are ideal controllers for simple automation tasks. They generally feature a timer, counter, relay output and auxiliary contact. Some smart relays include LCD screens for easy programming and display. Smart relays can be used for applications such as lighting control, pump control, level control, HVAC, packaging machines and industry manufacturing.

IDEC SafetyOne FS1A safety controllers can replace up to six safety relay modules without any programming. They are easily configured by turning a dip switch to 1 of 24 predefined logic circuits. One module can connect with various IDEC safety and non-safety components such as Interlock Switches, Emergency Stop switches, sensors, pilot lights and light curtains. The FS1A safety controller features up to 6 dual channel safety inputs, 4 safety outputs and multiple non-safety inputs, monitor, blanking and solenoid drive outputs.

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Found 86 items
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Schneider Electric (61)
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Smart Relay (42)
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Normally In Stock
Schneider Electric SR2D201FU Compact Smart Relay for Automation
Free U.S Ground shipping
$429.17
$357.64
Normally In Stock
Schneider Electric SR2A101FU Zelio Logic SR2 Smart Relay Controller
Free U.S Ground shipping
$329.54
$274.62
Normally In Stock
Schneider Electric SR3XT61BD Zelio Logic SR3 Discrete I/O Module
Free U.S Ground shipping
$135.40
$112.83
Normally In Stock
Schneider Electric SR3XT61FU Zelio Logic SR3 Smart Relay Module
Free U.S Ground shipping
$135.40
$112.83
Normally In Stock
Schneider Electric SR3B102BD Compact Smart Relay Features
Free U.S Ground shipping
$347.42
$289.52
Normally In Stock
Schneider Electric SR2E121FU Compact Programmable Relay for Automation
Free U.S Ground shipping
$288.67
$240.56
Normally In Stock
Schneider Electric SR3XT61JD Zelio Logic SR3 Discrete I/O Module
Free U.S Ground shipping
$229.91
$191.59
Normally In Stock
Schneider Electric SR2A201FU Zelio Logic SR2 Compact Smart Relay
Free U.S Ground shipping
$477.71
$398.09
Normally In Stock
Schneider Electric SR2E121BD Compact Programmable Relay
Free U.S Ground shipping
$283.56
$236.30
Normally In Stock
Schneider Electric SR3B261FU Compact Smart Relay Controller
Free U.S Ground shipping
$620.77
$517.31
Normally In Stock
Schneider Electric SR2PACK2FU Zelio Logic Discovery Pack
Free U.S Ground shipping
$620.77
$517.31
Normally In Stock
Schneider Electric SR2PACK2BD Compact Smart Relay Discovery Pack
Free U.S Ground shipping
$620.77
$517.31
Normally In Stock
Schneider Electric SR2E201B Zelio Logic SR2 Compact Smart Relay
Free U.S Ground shipping
$431.74
$359.78
Normally In Stock
Schneider Electric SR2E201BD Zelio Logic Compact Relay
Free U.S Ground shipping
$431.74
$359.78
Normally In Stock
Schneider Electric SR3B101FU Zelio Logic SR3 Compact Smart Relay
Free U.S Ground shipping
$372.97
$310.81
Normally In Stock
Schneider Electric SR2B201FU Compact Smart Relay for Automation
Free U.S Ground shipping
$521.14
$434.28
Normally In Stock
Schneider Electric SR2D101FU Smart Compact Relay
Free U.S Ground shipping
$278.45
$232.04
Normally In Stock
Schneider Electric SR3B262BD Zelio Logic SR3 Compact Smart Relay
Free U.S Ground shipping
$592.68
$493.90
Normally In Stock
Schneider Electric SR2A101BD Zelio Logic SR2 Smart Relay Controller
Free U.S Ground shipping
$296.33
$246.94
Normally In Stock
Schneider Electric SR3B261JD Zelio Logic SR3 Compact Smart Relay
Free U.S Ground shipping
$524.98
$437.48
Normally In Stock
Schneider Electric SR3PACK2BD Zelio Logic SR3 Discovery Pack
Free U.S Ground shipping
$717.85
$598.21
Normally In Stock
Schneider Electric SR3PACK2FU Zelio Logic SR3 Discovery Pack Compact Smart Relay
Free U.S Ground shipping
$717.85
$598.21
Normally In Stock
Schneider Electric SR2B121FU Zelio Logic SR2 Compact Smart Relay
Free U.S Ground shipping
$367.87
$306.56
Normally In Stock
Schneider Electric SR2D201BD Zelio Logic SR2 Compact Relay
Free U.S Ground shipping
$421.51
$351.26
Normally In Stock
Schneider Electric SR2E201FU Zelio Logic SR2 Compact Smart Relay
Free U.S Ground shipping
$439.39
$366.16
Normally In Stock
Schneider Electric SR2A201BD Compact Programmable Relay
Free U.S Ground shipping
$457.27
$381.06
Normally In Stock
Schneider Electric SR2D101BD Zelio Logic SR2 Compact Smart Relay
Free U.S Ground shipping
$273.35
$227.79
Normally In Stock
Schneider Electric SR2B202BD Zelio Logic SR2 Compact Smart Relay
Free U.S Ground shipping
$500.71
$417.26
Normally In Stock
Schneider Electric SR3PACKBD Compact Programmable Relay Discovery Pack
Free U.S Ground shipping
$482.82
$402.35
Normally In Stock
Schneider Electric SR3PACKFU Zelio Logic SR3 Discovery Pack
Free U.S Ground shipping
$482.82
$402.35
Normally In Stock
Schneider Electric SR2PACKBD Compact Smart Relay Discovery Pack Zelio Logic SR2
Free U.S Ground shipping
$482.82
$402.35
Normally In Stock
Schneider Electric SR2PACKFU Compact Smart Relay Discovery Pack
Free U.S Ground shipping
$482.82
$402.35
Normally In Stock
Schneider Electric SR3XT101BD Zelio Logic SR3 Smart Relay Module
Free U.S Ground shipping
$160.94
$134.12
Normally In Stock
Schneider Electric SR3XT101B Zelio Logic SR3 Discrete I/O Module
Free U.S Ground shipping
$160.94
$134.12
Normally In Stock
Schneider Electric SR3XT101FU Smart Relays Extension Module Zelio Logic
Free U.S Ground shipping
$160.94
$134.12
Normally In Stock
Schneider Electric SR3B261B Zelio Logic SR3 Compact Relay
Free U.S Ground shipping
$608.00
$506.67
Normally In Stock
Schneider Electric SR3B261BD Zelio Logic SR3 Compact Smart Relay
Free U.S Ground shipping
$608.00
$506.67
Normally In Stock
Schneider Electric SR2B122BD Compact Smart Relay for Automation
Free U.S Ground shipping
$352.55
$293.79
Normally In Stock
Schneider Electric SR2B201JD Compact smart relay for simple automation systems.
Free U.S Ground shipping
$508.37
$423.64
Normally In Stock
Schneider Electric SR2B201BD Compact Smart Relay Controller
Free U.S Ground shipping
$508.37
$423.64
Normally In Stock
Schneider Electric SR2B201B Compact Smart Relay for Automation Systems
Free U.S Ground shipping
$508.37
$423.64
Normally In Stock
Schneider Electric SR3XT141BD Zelio Logic SR3 Discrete IO Module
Free U.S Ground shipping
$209.48
$174.57
Normally In Stock
Schneider Electric SR3XT141FU Zelio Logic SR3 Smart Relay Module
Free U.S Ground shipping
$209.48
$174.57
Normally In Stock
Schneider Electric SR3XT101JD Zelio Logic SR3 Discrete I/O Module
Free U.S Ground shipping
$191.59
$159.66
Normally In Stock
Schneider Electric SR3B101B Zelio Logic SR3 Compact Relay
Free U.S Ground shipping
$360.20
$300.17
Normally In Stock
Schneider Electric SR3B101BD Zelio Logic SR3 Compact Smart Relay
Free U.S Ground shipping
$360.20
$300.17
Normally In Stock
Schneider Electric SR2B121JD Compact Smart Relay For Automation
Free U.S Ground shipping
$360.20
$300.17

What is a relay? A relay is an electrically operated switch. Most relays use an electromagnetic to operate the switch. An electromagnet is a device that creates a magnetic field by passing an electrical current through a coil of wire. The magnetic field is then turned off when the current is removed. 

Why use relays? Relays are commonly used when there is a need to control a switch with high voltage or circuits with large amounts of current passing through them. Operating these types of switches manually can be dangerous, inefficient and impractical. By using relays, operational safety is increased while also providing the ability to use smaller, safer and less expensive electrical equipment to control devices. Using relays allow for control of several devices on a single switch, as opposed to using several switches for each device. Relays can be combined with timers and logic circuits to assist in electrical automation. 

How do relays work? A relay consists of two separate circuits that work together to open or close a switch (or contacts). The first circuit drives the coil (or electromagnet). The electricity passes through the coil, creating a magnetic field. The second circuit contains a set contacts and a separate power source. This circuit is what provides power to the electrical load.   

When electricity passes through the coil, it creates a magnetic field. This magnetic field pulls the contact from the other circuit closed (or against the stationary contact) which will allow current to pass through the contacts, therefore allowing the load to become energized. When the coil is de-energized, the magnetic field is gone which allows the contact to be pushed back into its original state, de-energizing the load side of the circuit.