Time Delay Relays DELAY-ON-BREAK * TDB / TDBH / TDBL Series Description The TDB series combines accurate digital circuitry with isolated, 8 A, DPDT or SPDT contacts in an 8-pin or 11-pin plug-in package. The TDB series features DIP switch selectable time delays ranging from 0.110,230 seconds in three ranges. The TDB series is the product of choice for custom control panel and OEM designers. Operation (Delay-on-Break) Input voltage must be applied to the input before and during timing. Upon closure of the initiate switch, the output relay is energized. The time delay begins when the initiate switch is opened (trailing edge triggered). The output remains Wiring Diagram energized during timing. At the end of the time delay, the output de-energizes. The output will energize if the initiate switch is closed when input voltage is applied. Reset: Reclosing the initiate switch during timing resets the time delay. Loss of input voltage resets the time delay and 8-PIN OCTAL SPDT output. Features & Benefits L1 N/L2 S1 = Initiate Switch FEATURES BENEFITS Relay contacts are isolated 3 time ranges available Makes it versatile for use in many (0.1 s to 2.8 h) applications Repeat Accuracy +/- 0.1 % Microcontroller based Setting Accuracy +/- 2 % 11-PIN DPDT LED indication Provides visual indication of relay status (select models) Dip switch adjustment Provides first time setting accuracy Allows control of loads with independent L1 N/L2 Isolated output contacts voltage sources Ordering Information MODEL INPUT VOLTAGE DELAY RANGE (SEC) LED TYPE PLUG/OUTPUT FORM TDB120AL 120 V ac 11023 in 1 s increments X Octal (8-pin) plug, SPDT TDB120ALD 120 V ac 11023 in 1 s increments X 11-pin plug, DPDT TDB12D 12 V dc 11023 in 1 s increments Octal (8-pin) plug, SPDT TDB230AL 230 V ac 11023 in 1 s increments X Octal (8-pin) plug, SPDT TDB24AL 24 V ac 11023 in 1 s increments X Octal (8-pin) plug, SPDT TDB24DL 24 V dc/ 28 V dc 11023 in 1s increments X Octal (8-pin) plug, SPDT TDBH120AL 120 V ac 1010230 in 10 s increments X Octal (8-pin) plug, SPDT TDBH120ALD 120 V ac 1010230 in 10 s increments X 11-pin plug, DPDT TDBL120AL 120 V ac 0.1102.3 in 0.1 s increments X Octal (8-pin) plug, SPDT TDBL120ALD 120 V ac 0.1102.3 in 0.1 s increments X 11-pin plug, DPDT TDBL24DL 24 V dc/ 28 V dc 0.1102.3 in 0.1 s increments X Octal (8-pin) plug, SPDT Littelfuse.com 2021 Littelfuse, Inc. 1 of 2 Rev: 1-B-030121Time Delay Relays DELAY-ON-BREAK Accessories Specifications Time Delay OT08PC 8-pin Octal Socket for UL listing* Type Digital integrated circuitry 8-pin 35 mm DIN-rail or surface mount. Rated Range 0.1102.3 s in 0.1 s increments at 10 A 600 V ac. Surface mounted with two 11023 s in 1 s increments 6 screws or snaps onto a 35 mm DIN rail. 1010,230 s in 10 s increments Repeat Accuracy 0.1 % OT11PC Octal Socket for UL listing* Setting Accuracy 2 % 11-pin surface & DIN-rail mountable. Rated for Reset Time 150 ms 10 A 300 V ac Time Delay vs Temp. & Voltage 5 % Indicator LED indicates relay is energized P1011-6 Octal Socket for UL listing* Initiate Time 60 ms 8-pin surface mount socket with binder head Input screw terminals. Rated 10 A 600 V ac. Voltage 12, 24/28 V dc 24, 120, or 230 V ac Tolerance 12 V dc & 24 V dc/ac -15% 20% C103PM (AL) DIN Rail 120 & 230 V ac -20% 10% 35 mm aluminum DIN rail available in a 36 in. AC Line Frequency 50/60 Hz (91.4 cm) length. Power Consumption 3.25W Output Type Electromechanical relay Form SPDT or DPDT Rating 8 A resistive 120/240 V ac Digi-Set Binary Switch Operation 1/3 hp 120/240 V ac 7 6 Life Mechanical - 1 x 10 Electrical - 1 x 10 Protection Isolation Voltage 1500 V rms input to output Polarity Dc units reverse polarity protected Mechanical Mounting Plug-in socket Dimensions H 44.45 mm (1.75) W 60.33 mm (2.38) D (with socket) 104.78 mm (4.13) Termination Octal 8-pin plug-in or 11-pin plug-in Environmental Operating/Storage Temperature -20 C to 65 C / -30 C to 85 C Weight 4 oz (113 g) Safety Marks Function Diagram UL (socket required)* UL 508 (E57310) DELAY-ON-BREAK (OFF-DELAY) V = Voltage S1 = Initiate Switch *UL Listed when used with Part Number OT08-PC, RB08-PC, OT11-PC, or RB11-PC NO = Normally manufactured by Custom Connector Corp. Open Contact NC = Normally Note: Manufacturer s recommended screw terminal torque for the OT series Closed Contact sockets is 12 in-lbs. TD = Time Delay t = Incomplete Time Delay R = Reset = Undened Time Disclaimer Notice Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer. Littelfuse.com 2021 Littelfuse, Inc. 2 of 2 Rev: 1-B-030121