Littelfuse Relays, Timers & Counters

Littelfuse relays, timers and counters offer a broad series of control relays, timing relays, counters and indicators for the control, monitoring, and protection of industrial automation and electrical systems. Typical applications include control panels, machinery and OEM equipment where switching, timing or counting functions are required. Littelfuse control products leverage their circuit protection expertise to ensure high performance in demanding industrial applications.

Littelfuse relays are used for switching of electrical loads, control signal isolation and power distribution for automation systems. Motor control, HVAC, lighting control, safety and industrial machinery are typical relay applications. They feature compact designs and DIN-rail mounting to save space in control panels and ensure reliable electrical operation.

Littelfuse timers provide timing functions such as on-delay, off-delay, interval, repeat cycle and watchdog timer for industrial applications. Start-up delays, conveyor belt timing, alarm functions and equipment protection are examples of applications that require timers. Solid-state technology ensures accurate and reliable timing in continuous duty cycles.

Found 1238 items
Normally In Stock
Littelfuse HRV43AE Time Delay Relay - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$205.75
$171.46
Normally In Stock
Littelfuse KSD2420 Time Delay Relay - 120 Volt, Normally Open
Free U.S Ground shipping
$75.18
$62.65
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Littelfuse PHS230A20 AC Phase Control
Free U.S Ground shipping
$83.93
$69.94
Normally In Stock
Littelfuse PGR-3100 Ground Fault Indication System W/ Leds
Free U.S Ground shipping
$941.08
$784.23
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Littelfuse LLC44A2A Liquid Level Control - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$143.15
$119.29
Normally In Stock
Littelfuse LLC24B2F50N Liquid Level Control - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$147.59
$122.99
Normally In Stock
Littelfuse HRV41AE Time Delay Relay - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$205.75
$171.46
Normally In Stock
Littelfuse HRDI117S Time Delay Relay - 12 Volt (DC), Double Throw, Single Pole
Free U.S Ground shipping
$135.37
$112.81
Normally In Stock
Littelfuse HRDB623 Time Delay Relay - 230 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$135.37
$112.81
Normally In Stock
Littelfuse KSD1230 Time Delay Relay - 24 Volt, Normally Open
Free U.S Ground shipping
$75.18
$62.65
Normally In Stock
Littelfuse SCR430T Lighting Control - 120 Volt, SDPT
Free U.S Ground shipping
$373.39
$311.16
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Littelfuse SCR490D Lighting Control - 120 Volt, SDPT
Free U.S Ground shipping
$373.39
$311.16
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Littelfuse CT1S30 Time Delay Relay - 24 Volt, Normally Open
Free U.S Ground shipping
$69.77
$58.14
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Littelfuse CT1S45 Time Delay Relay - 24 Volt, Normally Open
Free U.S Ground shipping
$69.77
$58.14
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Littelfuse ERDM126 Time Delay Relay - 12 Volt (DC), Double Throw, Double Pole
Free U.S Ground shipping
$131.33
$109.44
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Littelfuse ESDR320A0P Solid State Timer (Recycling)
Free U.S Ground shipping
$128.84
$107.37
Normally In Stock
Littelfuse HRDB117S Time Delay Relay - 12 Volt (DC), Double Throw, Single Pole
Free U.S Ground shipping
$135.37
$112.81
Normally In Stock
Littelfuse TDM12DL Time Delay Relay - 12 Volt (DC), Double Throw, Double Pole
Free U.S Ground shipping
$151.02
$125.85
Normally In Stock
Littelfuse TDMB422D Time Delay Relay - 120 Volt, Double Throw, Double Pole
Free U.S Ground shipping
$212.41
$177.01
Normally In Stock
Littelfuse TDUS3000A Time Delay Relay - 24-120 Volt, Normally Open
Free U.S Ground shipping
$130.81
$109.01
Normally In Stock
Littelfuse THDB421A Time Delay Relay - 120 Volt, Normally Open
Free U.S Ground shipping
$120.95
$100.79
Normally In Stock
Littelfuse TSB2190 Delay On Break Timer
Free U.S Ground shipping
$92.03
$76.69
Normally In Stock
Littelfuse 231-INSIDER-P 1-Phase Pumpsaverplus/230v/ Fo
Free U.S Ground shipping
$284.57
$237.14
Normally In Stock
Littelfuse PLM9805 Voltage Monitoring - 400-480 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$222.37
$185.31
Normally In Stock
Littelfuse CT-0050-F10 50:5 Ct/ 1 In. Window/ Footed
Free U.S Ground shipping
$96.70
$80.58
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Littelfuse ECSL40AC Current Monitoring - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$223.09
$185.91
Normally In Stock
Littelfuse ARP43S Alternating Relay - 120 Volt, Double Throw, Double Pole
Free U.S Ground shipping
$172.22
$143.52
Normally In Stock
Littelfuse LLC44A5A Liquid Level Control - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$145.66
$121.38
Normally In Stock
Littelfuse LLC24A2F50N Liquid Level Control - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$147.59
$122.99
Normally In Stock
Littelfuse LLC42B15A Liquid Level Control - 24 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$143.15
$119.29
Normally In Stock
Littelfuse LLC44B1A Liquid Level Control - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$143.15
$119.29
Normally In Stock
Littelfuse LLC52AA Liquid Level Control - 24 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$141.07
$117.56
Normally In Stock
Littelfuse LLC52BA Liquid Level Control - 24 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$141.07
$117.56
Normally In Stock
Littelfuse LLC54AA Liquid Level Control - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$141.07
$117.56
Normally In Stock
Littelfuse LLC54BA Liquid Level Control - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$141.07
$117.56
Normally In Stock
Littelfuse LLC845F25P Liquid Level Control - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$131.30
$109.42
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Littelfuse DCSA20 AC Current Transducer
Free U.S Ground shipping
$187.74
$156.45
Normally In Stock
Littelfuse ARP41 Alternating Relay - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$172.22
$143.52
Normally In Stock
Littelfuse ARP41S Alternating Relay - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$172.22
$143.52
Normally In Stock
Littelfuse ECS60BC Current Monitoring - 230 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$216.97
$180.81
Normally In Stock
Littelfuse ARP63S Alternating Relay - 230 Volt, Double Throw, Double Pole
Free U.S Ground shipping
$172.22
$143.52
Normally In Stock
Littelfuse ECSW3LABT Current Monitoring - 24 Volt (DC), Double Throw, Single Pole
Free U.S Ground shipping
$313.74
$261.45
Normally In Stock
Littelfuse ECSH41AD Current Monitoring - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$223.09
$185.91
Normally In Stock
Littelfuse ECSW4LADT Current Monitoring - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$313.74
$261.45

FAQs

What are Littelfuse relays used for in industrial automation and control panels?

Littelfuse relays are used in industrial automation and control panels to switch electrical loads, isolate control circuits, and protect sensitive equipment. They are commonly applied in motor control, HVAC systems, power distribution, machine automation, and safety-related control circuits where dependable switching and durability are required.

What types of Littelfuse timers are available for industrial applications?

Littelfuse offers solid-state and electronic industrial timers designed for on-delay, off-delay, interval, repeat cycle, and watchdog timing functions. These timers are widely used for motor start delays, process sequencing, alarm timing, conveyor control, and equipment protection in industrial environments.

How are Littelfuse counters used in automation systems?

Littelfuse counters are used to track events, machine cycles, production counts, and operational hours in automated systems. They receive input signals from sensors, switches, or PLC outputs and are commonly used for production monitoring, batch counting, maintenance scheduling, and equipment usage tracking.

Are Littelfuse relays, timers, and counters suitable for control panel integration?

Yes, Littelfuse relays, timers, and counters are designed for control panel integration with DIN-rail mounting options, compact form factors, and industrial voltage compatibility. They are frequently specified by OEMs and panel builders for industrial control panels and automation cabinets.

Why choose Littelfuse relays, timers, and counters over other industrial brands?

Littelfuse is known for combining control functionality with circuit protection expertise, delivering reliable, long-life components for demanding industrial applications. Engineers choose Littelfuse for consistent performance, robust construction, and proven reliability in automation, power control, and safety-critical systems.