Littelfuse, Inc. Datasheets for Time Delay Relays

Time delay relays and solid state timers use solid state electronic devices to provide a time delay.
Time Delay Relays: Learn more

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Product Name	Notes
48636 5930100 5930200 5930300 5930400 5930500 5930600 5930700 5930800 5930860 5931400 8070900 ERDI436 ERDI6210 ERDM123 ERDM126 ERDM128 ERDM222 ERDM4130S ERDM4210 ERDM422 ERDM423 ERDM425 ERDM427 ERDM429 ESDR120A0P ESDR120B3P ESDR123B4P ESDR125A5P ESDR221A2 ESDR320A0P ESDR320A3P ESDR420A0 ESDR420A1 ESDR420A4 ESDR420B1 ESDR420B4 ESDR421A1 ESDR421A4 ESDR423A3 ESDR423A4 ESDR424A1 ESDR450A1 FA155 FA155-2 FA165 FA165-2 FS126 FS126-45 FS126-60 FS126RC FS126RC-45 FS127 FS143 FS146 FS146RC FS152 FS152-30 FS152-60 FS155-30RF FS155-30T FS162 FS162-30 FS165-30T FS219-45 FS224 FS312 FS324 FS336 FS390 FS491 FS512 FS524 FS590 FSU1000 FSU1003 FSU1004 FSU1005 HRDB1110M HRDB117S HRDB120 HRDB121 HRDB124 HRDB21A65M HRDB223 HRDB321 HRDB324 HRDB423 HRDB623 HRDI117S HRDI421 HRDI422 HRDM120 HRDM3112S HRDM413M HRDM415M HRDR121A4R HRDR321A4R HRDR322B2R HRDR330A0R HRDR331A1 HRDR411SB30MR HRDR431A1R HRDS120 HRDS313M HRDS321 HRDS421 HRDS430 HRISW25B HRPSD12HI HSPZA22SL KRDB110.1S KRDB112.5S KRDB1120M KRDB115M KRDB120 KRDB124 KRDB21180S KRDB217S KRDB31120S KRDB415S KRDB4160S KRDB420 KRDB421 KRDB422 KRDB423 KRDB424 KRDI120 KRDI121 KRDI122 KRDI2110S KRDI2160S KRDI220 KRDI320 KRDI420 KRDI424 KRDM1110S KRDM1130S KRDM120 KRDM121 KRDM2110M KRDM215M KRDM220 KRDM221 KRDM223 KRDM310.2S KRDM4110S KRDM4145S KRDM421 KRDM424 KRDM430 KRDM433 KRDM6115M KRDR115MB25M KRDR120A0 KRDR121A1 KRDR320B0 KRDR321A4 KRDR321B4 KRDR420A3 KRDR421A4 KRDR424A0 KRDR424A4 KRDS1135M KRDS120 KRDS221 KRDS420 KRDS421 KRDS424 KRDS430 KSDB1110MP KSDB1115SP KSDB1120SP KSDB113MP KSDB113SP KSDB120P KSDB134P KSDB2115S KSDB220 KSDB231 KSDB314SP KSDB315SP KSDB324N KSDB330N KSDB4120M KSDB4160S KSDB4190M KSDB431 KSDB61150S KSDB631 KSDR40A0 KSDR42A4 KSDS1115SP KSDS230 KSDS320P KSDS415M KSDS420 KSDU811200 KSDU8120 KSPDA2222RXE KSPDP110M18SRXE KSPSN21B KSPSP22B MSM10.5W6 MSM10.7W6 MSM110W6 MSM11W6 MSM130W9 MSM190W6 MSM20.15W9 MSM210P3 MSM25W9 MSM420W6 MSM42W6 MSM450W6 ORB120A160 ORB120A25 ORB24A11D ORB24A21D ORB24A25 ORM120A17 ORM120A25 ORM230A17 ORM24D13.5 ORM24D22 ORS120A150SD ORS230A150SD PRLM41180 PRLM423 PRS65 PTHF4900DK RS1A11 RS2B44 RS4A11 RS4A12 RS4A13 RS4A22 RS4A24 RS4A33 RS4B12 RS6A13 SC3120A SC4120A T2D120A15M TA12D1 TA12D2 TA24A0.5 TA24A3 TA24A5 TDIH24AL TDIL120AL TDIL24DL TDMB411 TDMB413D TDMB422 TDMB422D TDMB622 TDR1A22 TDR2A23 TDR4A11 TDR4A12 TDR4A13 TDR4A22 TDR4A23 TDR4A33 TDR4B22 TDR4B23 TDR6A22 TDUB3000A TDUB3002A TDUBH3001A TDUBH3002A TDUBL3002A TDUL3001A THD2C420 THD2C423 THD2C433 THD2C620 THD2C633 THD7421A THD7621C THDB421A THDB434C THDS410.25SA THDS431C THDS610.25SA TL120A5T TL230A5 TMM175-11-0 TMM175-11-3 TMM175-23-1 TMM175-23-4 TRB120A2Y30 TRB120A3X600 TRB120A4Y120 TRDU120A1 TRDU120A2 TRDU120A3 TRDU12D1 TRDU12D2 TRDU230A2 TRDU24A1 TRDU24A2 TRDU24A3 TRM120A2X30 TRM120A2Y120 TRM120A2Y180 TRM24A8Y5 TRM24D1X10 TRM24D1X2 TRS120A2X300 TRS120A2Y10 TRS24D7Z10 TRU1 TRU2 TRU3 TS1211.5 TSB2190 TSB222 TSB41300 TSB422 TSB434 TSB632
32V 250A Heavy-Duty Latching Time Delay Relay -- 08070900	The 32V 250A Heavy-Duty Latching Time Delay Relay (08070900) disconnects the battery from the vehicle electrical system with voltage self-recognition. It is rated for 12V/24V with a voltage range of...
Multifunction Time Delay Relay -- ASQUA3 Multifunction Time Delay Relay -- ASQUD3 Multifunction Time Delay Relay -- ASTUA3 Multifunction Time Delay Relay -- ASTUD3	The ASQU and ASTU Series of 17.5 mm, knob adjustable, universal solid-state timers offer multiple functions, voltages, and time delay ranges. Choose one of 5 functions and 4 time delay...
Delay on Make/Delay on Break Timer -- CT1S30 Delay on Make/Delay on Break Timer -- CT1S45 Delay on Make/Delay on Break Timer -- CT1S8 Delay on Make/Delay on Break Timer -- CT1S90 Delay on Make/Delay on Break Timer -- CT30S1 Delay on Make/Delay on Break Timer -- CT45S45 Delay on Make/Delay on Break Timer -- CT5S300	The CT Series combines a delay-on-make and delay-on-break time delay into one unit and may be used to control fan delays in heating and/or cooling equipment. The CT includes bypass...
Multifunction Time Delay Relay -- DSQUA3 Multifunction Time Delay Relay -- DSQUD3 Multifunction Time Delay Relay -- DSTUA3 Multifunction Time Delay Relay -- DSTUD3	The DSQU and DSTU Series of 17.5 mm, switch adjustable, universal solid-state timers offer multiple functions, voltages, and time delay ranges. Choose one of 5 functions and 4 time delay...
Relays, Contactors & Transformers - Single-Function & Control Relays - Time-Delay Relays - Recycle - Series: ERD - ERD3425A -- ERD3425A	The ERD3425A is a combination of digital electronics and a reliable electromechanical relay. DPDT relay output for relay logic circuits, and isolation of input to output voltages. Cost effective for...
Delay on Make/Interval Timer -- ESD52233	The ESD5 Series is an accurate, solid-state, delayed interval timer. It offers a 1A steady, 10A inrush output and is available with adjustable or fixed time delays of 0.1 seconds...
Alternating Timer -- HRISW21FT Interval Timer -- HRISW27I	The HRPS and HRIS Series combine an electromechanical relay output with microcontroller timing circuitry. It is a factory programmed module available in any 1 of 13 standard functions. It offers...
Vending Coin Counter Timer -- HRV11SC Vending Coin Counter Timer -- HRV24AC Vending Coin Counter Timer -- HRV41AE Vending Coin Counter Timer -- HRV41SE Vending Coin Counter Timer -- HRV42SE Vending Coin Counter Timer -- HRV43AE Vending Coin Counter Timer -- HRV43AN	The HRV combines the accuracy of microcontroller based circuitry with an electromechanical relay output. The HRV’s switching capacity allows direct control of loads like compressors, pumps, motors, heaters, and lighting.
Recycling Timer -- KRD3421A Recycling Timer -- KRD3424A	The KRD3 Series measures only 2 in. (50.8 mm) square. Its solid-state timing circuit provides excellent repeat accuracy and stability. Encapsulation protects against shock, vibration, and humidity. The KRD3 Series...
Retrig Single Shot Timers -- KRD9120B Retrig Single Shot Timers -- KRD92115MA Retrig Single Shot Timers -- KRD92115MB Retrig Single Shot Timers -- KRD9220B Retrig Single Shot Timers -- KRD93115MA Retrig Single Shot Timers -- KRD9423B	The KRD9 Series microcontroller timing circuit provides excellent repeat accuracy and stability. Cost effective approach for OEM applications that require small size, isolation, reliability, and long life. Operation (Retriggerable Single...
Relay Output Timer -- KRPD215S190SMB Relay Output Timer -- KRPD417M113MRXD Relay Output Timer -- KRPDD2121MB Single Timer -- KRPDA175S130SMI	The KRPD Series is a factory programmed time delay relay available with 1 of 12 standard dual functions. The time delays can be factory fixed, onboard or externally adjustable or...
Alternating Relay -- KRPSA10.1SFT Alternating Relay -- KRPSD10.1SF Delay On Break Timer -- KRPS913MB Delay On Break Timer -- KRPSA22B Delay On Break Timer -- KRPSD21B Delay On Make Timer -- KRPS4160MM Delay On Make Timer -- KRPSA24M Delay On Make Timer -- KRPSD21M Delay On Make Timer -- KRPSD22M Recycle Timers -- KRPSA21RE Single Shot Timer -- KRPSD22S Single Shot Timer -- KRPSD25S	The KRPS Series is a factory programmed time delay relay available with 1 of 15 functions and measures only 2 inches square. The KRPS offers a wide range of fixed,...
Delay-on-Make Timer -- KSD11120S Delay-on-Make Timer -- KSD1123 Delay-on-Make Timer -- KSD1230 Delay-on-Make Timer -- KSD1320 Delay-on-Make Timer -- KSD1412S Delay-on-Make Timer -- KSD14130S Delay-on-Make Timer -- KSD1420 Delay-on-Make Timer -- KSD16130S	The KSD1 Series features two-terminal, series-connection with the load. The KSD1 Series is an ideal choice for delay-on make timing applications. This series is designed for general purpose commercial and...
Interval Timers -- KSD2221 Interval Timers -- KSD2413M Interval Timers -- KSD2420	The KSD2 Series is designed for general purpose commercial and industrial applications where a small, cost effective, reliable, solid-state timer is required. The factory calibration for fixed time delays is...
Recycle Timers -- KSD3120A Recycle Timers -- KSD3310.1SA Recycle Timers -- KSD3415MA Recycle Timers -- KSD3432A	The KSD3 Series is a cost effective approach for ON/OFF recycling applications. The on time is equal to the off time. An adjustment of the RT will change the time...
Delay On Make Timer -- KSPSP145SM Delay on Make -- KSPSN13MI Recycling Timer -- KSPS2180SB Recycling Timer -- KSPSA21FT Retrig Single Shot Timers -- KSPSP35PSD	The KSPS Series is a factory programmed module available in any 1 of 14 standard functions. The KSPS offers a single, fixed, externally or onboard adjustable time delay. The 1A...
Counter with Pulsed Output -- KSPUA8C	The KSPU Series is a factory programmed module available in any 1 of 14 standard functions. The KSPU offers a single adjustable counter function. Switch adjustment allows accurate selection of...
Interval Timer -- KSPUA2I	The KSPU Series is a factory programmed module available in any 1 of 14 standard functions. The KSPU offers a single adjustable timer function. Switch adjustment allows accurate selection of...
Solid-State On-Delay Timer -- T10120 Solid-State On-Delay Timer -- T10200 Solid-State On-Delay Timer -- T10400 Solid-State On-Delay Timer -- T10S400	The T-10-(xxx) on-delay timer is a solid-state electronic device that provides accurate and reliable timing for control circuits up to 460VAC. The T-10 features a user-selectable time delay from 6...
Delay on Make HVAC Timer -- TAC1223 Delay on Make HVAC Timer -- TAC1411 Delay on Make HVAC Timer -- TAC1412 Delay on Make HVAC Timer -- TAC1413 Relays, Contactors & Transformers - Single-Function & Control Relays - Time-Delay Relays - HVAC - Series: TAC - TAC14164 -- TAC14164	The TAC1 Series was designed to delay the operation of a compressor relay. It eliminates the possibility of relay chatter due to half-wave failure of the output. It connects in...
Relay-Output, Delay-on-Break Time Delay Relay -- TDB120AL Relay-Output, Delay-on-Break Time Delay Relay -- TDB120ALD Relay-Output, Delay-on-Break Time Delay Relay -- TDB12D Relay-Output, Delay-on-Break Time Delay Relay -- TDB230AL Relay-Output, Delay-on-Break Time Delay Relay -- TDB24AL Relay-Output, Delay-on-Break Time Delay Relay -- TDB24DL Relay-Output, Delay-on-Break Time Delay Relay -- TDBH120AL Relay-Output, Delay-on-Break Time Delay Relay -- TDBH120ALD Relay-Output, Delay-on-Break Time Delay Relay -- TDBL120AL Relay-Output, Delay-on-Break Time Delay Relay -- TDBL120ALD Relay-Output, Delay-on-Break Time Delay Relay -- TDBL24DL	The TDB Series combines accurate digital circuitry with isolated, 10A, DPDT or SPDT contacts in an 8 or 11-pin plug-in package. The TDB Series features DIP switch selectable time delays...
Interval Timer -- TDI120AL Interval Timer -- TDI12D	The TDI Series is an interval timer that combines accurate digital circuitry with isolated, 10A rated, DPDT relay contacts in an 8-pin plug-in package. The TDI Series features DIP switch...
Delay On Make Timer -- TDM120AL Delay On Make Timer -- TDM12DL Delay On Make Timer -- TDM230AL Delay On Make Timer -- TDM24AL Delay On Make Timer -- TDM24DL Delay On Make Timer -- TDMH120AL Delay On Make Timer -- TDMH24AL Delay On Make Timer -- TDML110DL Delay On Make Timer -- TDML120AL Delay On Make Timer -- TDML12DL Delay On Make Timer -- TDML24DL	The TDM Series is a delay-on-make timer that combines accurate digital circuitry with isolated, DPDT relay contacts in an industry standard 8-pin plug-in package. DIP switch adjustment allows precise selection...
Single Shot Timer -- TDS120AL Single Shot Timer -- TDS120ALD Single Shot Timer -- TDS12D Single Shot Timer -- TDS230AL Single Shot Timer -- TDS24AL Single Shot Timer -- TDSH120AL Single Shot Timer -- TDSL120AL	The TDS Series combines accurate digital circuitry with isolated, 10A rated, DPDT or SPDT relay contacts in an 8 or 11-pin plug-in package. The TDS Series features DIP switch selectable...
Encapsulated Solid-State Delay-On-Make Timer -- TDU3000A Encapsulated Solid-State Delay-On-Make Timer -- TDU3001A Encapsulated Solid-State Delay-On-Make Timer -- TDU3003A Encapsulated Solid-State Delay-On-Make Timer -- TDUH3000A Encapsulated Solid-State Delay-On-Make Timer -- TDUH3001A Encapsulated Solid-State Delay-On-Make Timer -- TDUL3000A Interval Timer -- TDUIL3001A	The TDU Series are encapsulated solid-state, delay-on-make timers that combine digital timing circuitry with universal voltage operation. The TDU offers DIP switch adjustment allowing accurate selection of the time delay...
Interval Timer -- TDUI3000A Interval Timer -- TDUIH3002A Interval Timer -- TDUIL3002A	The TDUI Series combines digital timing circuitry with universal voltage operation. Voltages of 24 to 240VAC and 12 to 24VDC are available in three ranges. The TDUI Series offers DIP...
Dedicated Single-Shot Delay-On-Make Timer -- TDUS3000A Dedicated Single-Shot Delay-On-Make Timer -- TDUS3001A Dedicated Single-Shot Delay-On-Make Timer -- TDUS3002A Dedicated Single-Shot Delay-On-Make Timer -- TDUSH3001A Dedicated Single-Shot Delay-On-Make Timer -- TDUSL3000A	The TDUS Series combines digital timing circuitry with universal voltage operation. Voltages of 24 to 240VAC and 12 to 24VDC are available in three ranges. The TDUS Series offers DIP...
Single Shot Timer -- THC421C Single Shot Timer -- THS422B Single Shot Timer -- THS422C	The TH series is a solid-state relay and timer combined into one compact, easy-to-use control. When mounted to a metal surface, the TH Series may be used to directly control...
Delay On Make Timer -- TH1B633 Delay On Make Timer -- TH1C415 Delay On Make Timer -- TH1C621	The TH1 Series is a solid-state relay and timer combined into one compact, easy-to-use control. This highly reliable device eliminates the need for a separate solid-state relay. When mounted to...
Recycling Timer -- THD3C42A0	The THD Series combines accurate timing circuitry with high power, solid-state switching. It can switch motors, lamps, and heaters directly without a contactor. The THD3 has equal on and off...
Delay On Make Timer -- THD1B410.5S	The THD1 Series combines accurate timing circuitry with high power solid-state switching. It can switch motors, lamps, and heaters directly without a contactor. You can reduce labor, component cost, and...
Universal Voltage Delay on Make Timer -- TMV8000	The TMV and TSU Series are universal voltage delay-on-make timers. Two models cover all the popular voltages and time delays. Available with knob or external adjust time delay. Its simple...
Delay On Make Timer -- TS121150 Delay On Make Timer -- TS12130 Delay On Make Timer -- TS12190 Delay On Make Timer -- TS1221 Delay On Make Timer -- TS1222 Delay On Make Timer -- TS1224 Delay On Make Timer -- TS13115 Delay On Make Timer -- TS1321 Delay On Make Timer -- TS1410.25 Delay On Make Timer -- TS14110 Delay On Make Timer -- TS141180 Delay On Make Timer -- TS1412 Delay On Make Timer -- TS14120 Delay On Make Timer -- TS14130 Delay On Make Timer -- TS1415 Delay On Make Timer -- TS1416 Delay On Make Timer -- TS1421 Delay On Make Timer -- TS1422 Delay On Make Timer -- TS1423 Delay On Make Timer -- TS1424 Delay On Make Timer -- TS1612 Delay On Make Timer -- TS1615 Delay On Make Timer -- TS1621 Delay On Make Timer -- TS1622 Relays, Contactors & Transformers - Single-Function & Control Relays - Time-Delay Relays - Delay-on-Make - Series: TS DOM Timers - TS1214 -- TS1214	The TS1 Series offers proven reliability and performance with years of use in OEM equipment and commercial applications. This encapsulated general use timing module is capable of controlling load currents...
Delay-on-Make Timer -- TS22120 Delay-on-Make Timer -- TS2223 Delay-on-Make Timer -- TS2412 Delay-on-Make Timer -- TS24130 Delay-on-Make Timer -- TS2421 Delay-on-Make Timer -- TS2422 Delay-on-Make Timer -- TS2423 Delay-on-Make Timer -- TS2424 Delay-on-Make Timer -- TS6116P Delay-on-Make Timer -- TS6122P Delay-on-Make Timer -- TS6123P Delay-on-Make Timer -- TS6321P Delay-on-Make Timer -- TS6323P	The TS2 Series is designed for 24, 120 or 230VAC and the TS6 Series is designed for 12 or 24VDC. These series are capable of controlling load currents of up...
Delay on Make Normally Closed Timer -- TS441165	The TS4 Series are analog delay-on-make timers with a normally closed solid-state output. Unlike an interval timer, the load is energized prior to and during the time delay period. It...
HVAC Anti-Short Cycle, Solid State Timer -- TSA141300	The TSA141300 utilizes the Versa-Time circuitry in a unique arrangement that provides random start and a lockout delay in one small, rugged, inexpensive package. When connected as shown, the TSA141300...

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