TRDU120A3

**Time Delay Relays** Multifunction 

## ~~TR~~ DU SE ~~RI~~ ES 

## **Description** 

## **Wiring Diagram** 

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L1 N/L2 L1 N/L2<br>+ - + -<br>8-PIN DPDT 8-PIN SPDT<br>**----- End of picture text -----**<br>


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8-PIN<br>—<br>ee<br>11-PIN<br>**----- End of picture text -----**<br>


The TRDU Series is a versatile universal time delay relay with 21 selectable single and dual functions. The dual functions replace up to three timers required to accomplish the same function. Both the function and the timing range are selectable with switches located on the face of the unit. Two LED’s indicate input voltage and output status. This device offers full 10A isolated relay output contacts in either SPDT or DPDT.  The TRDU replaces hundreds of part numbers, thereby, reducing your stock inventory requirements. 

## **21 Functions** 

Five switches are provided to set one of 10 single or 11 dual modes of operation. 

## **Features & Benefits** 

|FEATURES|BENEFITS|
|---|---|
|**Multifunction:**|Replace hundreds of parts and reduce stocking|
|**21 timing functions**|requirements|
|**Microcontroller based**<br>**User selectable**<br>**time delay**|Repeat Accuracy + / - 0.1%<br>Timing settings are switch selectable 0.1s - 1,705h<br>in eight ranges for added flexibility|
|**Isolated 10A, SPDT or**<br>**DPDT output contacts**|Allows control of loads for AC or DC voltages|
|**LED indicators**|Provides visual indication of input voltage and<br>relaystatus|



## **Accessories** 

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V = Voltage<br>S1 = Initiate Switch<br>**----- End of picture text -----**<br>


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L1 N/L2<br>“v o<br>11-PIN DPDT<br>**----- End of picture text -----**<br>


## **Ordering Information** 

|MODEL|INPUT VOLTAGE|BASE CONNECTION|
|---|---|---|
|TRDU120A1<br>TRDU120A2<br>TRDU120A3|120VAC<br>120VAC<br>120VAC|8-pin, DPDT*<br>8-pin, SPDT<br>11-pin, DPDT|
|TRDU12D1|12VDC|8-pin, DPDT*|
|TRDU12D2|12VDC|8-pin, SPDT|
|TRDU230A2|230VAC|8-pin, SPDT|
|TRDU24A1|24VAC/DC|8-pin, DPDT*|
|TRDU24A2<br>TRDU24A3|24VAC/DC<br>24VAC/DC|8-pin, SPDT<br>11-pin, DPDT|



## **BZ1 Front Panel Mount Kit** 

Provides an easy method of through-the-panel mounting of 8- or 11-pin plug-in timers, flashers, and other controls. 

## **NDS-8 Octal 8-pin Socket** 

8-pin 35mm DIN rail or surface mount. Surface mounted with two #6 screws or snaps onto a 35 mm DIN rail. Uses PSC8 hold-down clips. 

## **NDS-11 11-pin Socket** 

11-pin 35mm DIN rail or surface mount. Surface mounted with two #6 screws or snaps onto a 35 mm DIN rail. Uses PSC11 hold-down clips. 

## **PSC8 or PSC11 Hold-down Clips** 

Securely mounts plug-in controls in any position. Provides protection against vibration. Use PSC8 with NDS-8 Octal Socket or PSC11 with NDS-11 Socket. Sold in sets of two. 

## **C103PM (AL) DIN Rail** 

35 mm aluminum DIN rail available in a 36 in. (91.4 cm) length. 

If you don’t find the part you need, call us for a custom product 800-843-8848 

*Limited to 9 operating functions in 8-pin DPDT units. 

© 2016 Littelfuse Protection Relays & Controls www.littelfuse.com/trdu 

Rev: 1-A-062216 

**Time Delay Relays** Multifunction 

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## ~~TR~~ DU SE ~~RI~~ ES 

## **Specifications** 

**Time Delay Type** Microcontroller **Range: Switch Selectable**** Single Functions:  0.1s - 1,705h in 8 ranges Dual Functions:  0.1s - 3,100m each in 8 ranges **Adjustments** Multiplier: 3 position DIP switches select 0.1, 1, 10, or 100 in s or m **Setting Accuracy** ±1% or 50ms, whichever is greater **Repeat Accuracy** ±0.1% or 20ms, whichever is greater **Timing Functions** Five switches are provided to set one of twenty-one single or dual functions **Reset Time** ≤ 50ms **Initiate Time** 120VAC: 75ms **Time Delay vs Temp. & Voltage** ±1% **Indication Two LEDs indicate 1)** Input voltage applied **2)** Output relay status **Input Voltage** 12VDC, 24VAC/DC, 120VAC, or 230VAC **Tolerance 12VDC & 24VAC/DC** -15% - 20% **120 & 230VAC** -20% - 10% **AC Line Frequency** 50/60Hz **Power Consumption** 24 to 230V ≤ 3W; 12VDC ≤ 2W **Output Type** Electromechanical relay **Form** SPDT or DPDT **Rating** 10A resistive @ 120/240VAC & 28 VDC; 1/3 hp @ 120/240VAC **Life** Mechanical – 1 x 10[7] ; Electrical – 1 x 10[6] 

**Protection Isolation Voltage** ≥ 1500V RMS input to output **Insulation Resistance** ≥ 100 MΩ **Polarity** DC units are reverse polarity protected **Mechanical Mounting** Plug-in socket **Dimensions H** 76.7 mm (3.1”); **W** 60.7 mm (2.39”); **D** 45.2 mm (1.78”) **Termination** Octal 8-pin plug-in or magnal 11-pin plug-in **Environmental Operating/Storage Temperature** -20° to 65°C / -40° to 85°C **Weight** ≅ 5.8 oz (164 g) 

**For CE approved applications, power must be removed from the unit when a switch position is changed. 

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## **Function Diagrams** 

Single Functions 

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DELAY-ON-MAKE (ON-DELAY) * 

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DELAY-ON-BREAK<br>**----- End of picture text -----**<br>


> RECYCLE (ON TIME * FIRST, EQUAL DELAYS) 

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SINGLE SHOT<br>**----- End of picture text -----**<br>


## Dual Functions 

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DELAY-ON-MAKE/DELAY-ON-BREAK DELAY-ON-MAKE / RECYCLE* (ON TIME FIRST) 

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DELAY-ON-MAKE/INTERVAL*<br>**----- End of picture text -----**<br>


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DELAY-ON-MAKE / SINGLE SHOT<br>**----- End of picture text -----**<br>


© 2016 Littelfuse Protection Relays & Controls www.littelfuse.com/trdu 

Rev: 1-A-062216 

**Time Delay Relays** Multifunction 

## ~~TR~~ DU SE ~~RI~~ ES 

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Single Functions Dual Functions<br> INTERVAL* INTERVAL / RECYCLE(ON TIME FIRST) [*]<br>TRAILING EDGE SINGLE SHOT<br>DELAY-ON-BREAK / RECYCLE<br>(IMPULSE-OFF)<br>(ON TIME FIRST)<br>INVERTED SINGLE SHOT SINGLE SHOT / RECYCLE<br>(ON TIME FIRST)<br>INVERTED DELAY-ON-BREAK<br>RECYCLE (ON TIME FIRST) *<br>Both Times Adjustable<br>RETRIGGERABLE SINGLE SHOT<br>(MOTION DETECTOR) (PSD) RECYCLE (OFF TIME FIRST)*<br>Both Times Adjustable<br>ACCUMULATIVE<br>DELAY-ON-MAKE INTERVAL / DELAY-ON-MAKE*<br>ACCUMULATIVE<br>KEY  LEGEND DELAY-ON-MAKE / INTERVAL<br>V  =  Voltage<br>R  =  Reset<br>S1  =  Initiate Switch<br>NO = Normally Open Contact<br>NC = Normally Closed Contact<br>TD,TD1,TD2 = Complete Time Delay<br>t = Partial Time Delay<br>DOM = Delay-on-Make * 9 Functions included in the 8 pin DPDT models<br>DOB = Delay-on-Break<br>5 Switches for  REC = Recycle<br>Function Selection SS = Single Shot<br>INT = Interval<br>3 Switches for Time  M = Minutes<br>Delay Range   S = Seconds<br> =  Undefined time<br>NOTE: The time delay range is the same for both functions when dual functions are selected.<br>**----- End of picture text -----**<br>


© 2016 Littelfuse Protection Relays & Controls www.littelfuse.com/trdu 

Rev: 1-A-062216