Littelfuse Relays, Timers & Counters

Littelfuse relays, timers, and counters for industrial control and monitoring.

Littelfuse relays, timers, and counters provide reliable control, monitoring, and protection for industrial automation and electrical systems. Designed for use in control panels, machinery, and OEM equipment, these components support switching, timing, and counting functions in a wide range of applications. Leveraging Littelfuse expertise in circuit protection, these control products are engineered to deliver consistent electrical performance in demanding industrial environments.

Littelfuse relays are used to switch electrical loads, isolate control signals, and support power distribution within automation systems. Common applications include motor control, HVAC systems, lighting control, safety circuits, and industrial machinery. Compact form factors and DIN-rail mounting options help maximize panel space while maintaining dependable operation.

Littelfuse timers offer timing functions such as on-delay, off-delay, interval timing, repeat cycle, and watchdog timing for sequencing and equipment protection. These timers are used for motor start delays, conveyor control, alarm functions, and process timing in continuous-duty environments. Littelfuse counters track machine cycles, production counts, and operational events, providing accurate monitoring and control actions when preset values are reached. Together, these components form practical, hardware-based solutions for industrial control systems.

Found 1327 items
Normally In Stock
Littelfuse PHS230A20 AC Phase Control
Free U.S Ground shipping
$83.93
$69.94
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Littelfuse HRV43AE Time Delay Relay - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$205.75
$171.46
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Littelfuse KSD2420 Time Delay Relay - 120 Volt, Normally Open
Free U.S Ground shipping
$75.18
$62.65
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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
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Littelfuse HRV41AE Time Delay Relay - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$205.75
$171.46
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Littelfuse HRDI117S Time Delay Relay - 12 Volt (DC), Double Throw, Single Pole
Free U.S Ground shipping
$135.37
$112.81
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Littelfuse LLC24B2F50N Liquid Level Control - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$147.59
$122.99
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Littelfuse LLC24A2F50N Liquid Level Control - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$147.59
$122.99
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Littelfuse 231-INSIDER-P 1-Phase Pumpsaverplus/230v/ Fo
Free U.S Ground shipping
$284.57
$237.14
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Littelfuse LLC44A5A Liquid Level Control - 120 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$145.66
$121.38
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Littelfuse PLM9805 Voltage Monitoring - 400-480 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$222.37
$185.31
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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
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Littelfuse ARP43S Alternating Relay - 120 Volt, Double Throw, Double Pole
Free U.S Ground shipping
$172.22
$143.52
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Littelfuse KSD1230 Time Delay Relay - 24 Volt, Normally Open
Free U.S Ground shipping
$75.18
$62.65
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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 HRDB117S Time Delay Relay - 12 Volt (DC), Double Throw, Single Pole
Free U.S Ground shipping
$135.37
$112.81
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Littelfuse ESDR320A0P Solid State Timer (Recycling)
Free U.S Ground shipping
$128.84
$107.37
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Littelfuse HRDB623 Time Delay Relay - 230 Volt, Double Throw, Single Pole
Free U.S Ground shipping
$135.37
$112.81
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Littelfuse FA155-2 Solid State Aux. Module
Free U.S Ground shipping
$299.65
$249.71
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Littelfuse TDM12DL Time Delay Relay - 12 Volt (DC), Double Throw, Double Pole
Free U.S Ground shipping
$151.02
$125.85
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Littelfuse TDMB422D Time Delay Relay - 120 Volt, Double Throw, Double Pole
Free U.S Ground shipping
$212.41
$177.01
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Littelfuse TDUS3000A Time Delay Relay - 24-120 Volt, Normally Open
Free U.S Ground shipping
$130.81
$109.01
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Littelfuse THDB421A Time Delay Relay - 120 Volt, Normally Open
Free U.S Ground shipping
$120.95
$100.79
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Littelfuse TSB2190 Delay On Break Timer
Free U.S Ground shipping
$92.03
$76.69
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Littelfuse TSB222 Delay On Break Timer
Free U.S Ground shipping
$92.03
$76.69
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Littelfuse TS6122P Time Delay Relay - 12 Volt (DC), Normally Open
Free U.S Ground shipping
$85.25
$71.04
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Littelfuse TSD61115SP Time Delay Relay - 12 Volt (DC), Normally Open
Free U.S Ground shipping
$115.56
$96.30
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Littelfuse TSD7424 Time Delay Relay - 120 Volt, Normally Open
Free U.S Ground shipping
$87.84
$73.20
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Littelfuse TSD94110SB Time Delay Relay - 120 Volt, Normally Open
Free U.S Ground shipping
$110.65
$92.21
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Littelfuse TS14120 Time Delay Relay - 120 Volt, Normally Open
Free U.S Ground shipping
$85.25
$71.04
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Littelfuse TSA141300 Anti-Short Cycle
Free U.S Ground shipping
$90.40
$75.33
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Littelfuse TRDU12D2 Time Delay Relay - 12 Volt (DC), Double Throw, Single Pole
Free U.S Ground shipping
$204.06
$170.05
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Littelfuse TS24130 Time Delay Relay - 120 Volt, Normally Open
Free U.S Ground shipping
$85.25
$71.04
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Littelfuse TS1415 Time Delay Relay - 120 Volt, Normally Open
Free U.S Ground shipping
$85.25
$71.04
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Littelfuse TDMB413D Time Delay Relay - 120 Volt, Double Throw, Double Pole
Free U.S Ground shipping
$212.41
$177.01
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Littelfuse TDUIL3002A Time Delay Relay - 12-24 Volt (DC), Normally Open
Free U.S Ground shipping
$130.81
$109.01
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Littelfuse TDU3003A Time Delay Relay - 120-277 Volt, Normally Open
Free U.S Ground shipping
$74.30
$61.92

FAQs

Q: What are Littelfuse relays used for in industrial automation and control panels?
Littelfuse relays are used 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 circuits.

Q: What types of Littelfuse timers are available for industrial applications?
Littelfuse offers solid-state and electronic timers designed for on-delay, off-delay, interval, repeat cycle, and watchdog timing functions used in sequencing, alarm timing, and equipment protection.

Q: How are Littelfuse counters used in automation systems?
Littelfuse counters track machine cycles, production counts, and operational hours by receiving input signals from sensors, switches, or PLC outputs. They are commonly used for batch counting, production monitoring, and maintenance tracking.

Q: Are Littelfuse relays, timers, and counters suitable for control panel integration?
Yes. These components are designed for DIN-rail mounting, compact installation, and compatibility with standard industrial voltages, making them well suited for control panel integration.

Q: Why choose Littelfuse relays, timers, and counters over other industrial brands?
Littelfuse combines control functionality with circuit protection expertise, delivering reliable, long-life components suited for automation, power control, and safety-focused industrial systems.

Why Buy Littelfuse Relays, Timers & Counters from RSP Supply

RSP Supply offers a selection of Littelfuse relays, timers, and counters for industrial automation and control applications. With solutions for load switching, precise timing, and event monitoring, customers can specify dependable components for both new installations and retrofit projects. RSP Supply supports industrial professionals with