Time Delay Relays Dedicated - Delay-on-Break HRDB SERIES Delay-on-Break Timer Description The HRDB Series combines an electromechanical, relay output with microcontroller timing circuitry. The HRDB offers 12 to 230V operation in five options and factory fixed, external, or onboard adjustable time delays with a repeat accuracy of 0.5%. The isolated output contact rating allows for direct operation of heavy loads, such as compressors, pumps, blower motors, heaters, etc. The HRDB is ideal for OEM applications where cost is a factor. Operation (Delay-on-Break) Input voltage must be applied before and during timing. Upon closure of the initiate switch, the output relay energizes. The time delay begins when the initiate switch is opened. The output remains 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 output. Features & Benefits Wiring Diagram L1 V = Voltage S1 = Initiate Switch L = Timed Load UTL = Untimed Load (optional) NO = Normally Open C = Common, Transfer Contact N/L2 NOTE: A knob, or terminals 4 & 5 are only included on adjustable units. RT is used when external adjustment is ordered. Relay contacts are isolated. Dashed lines are internal connections. The untimed load is optional. FEATURES BENEFITS Microcontroller based Repeat Accuracy + / - 0.5% Compact, low cost design Allows flexiblility for OEM applications Isolated, 30A, SPDT, NO output contacts Allows direct operation of heavy loads: compressors, pumps, blower moters, heaters. Accessories P1004-95, P1004-95-X Versa-Pot Panel mountable, industrial potentiometer recommended for remote time delay adjustment. P1023-6 Mounting bracket The 90 orientation of mounting slots makes installation/removal of modules quick and easy. P0700-7 Versa-Knob Designed for 0.25 in (6.35 mm) shaft of Versa-Pot. Semi-gloss industrial black finish. Ordering Information MODEL INPUT VOLTAGE ADJUSTMENT TIME TOLERANCE TIME DELAY MODEL INPUT VOLTAGE ADJUSTMENT TIME TOLERANCE TIME DELAY HRDB1110M 12VDC Fixed + / -5% 10m HRDB223 24VAC Onboard + / -5% 0.1 - 10m HRDB117S 12VDC Fixed + / -5% 7s HRDB321 24VDC Onboard + / -5% 1 - 100s HRDB120 12VDC Onboard + / -5% 0.1 - 10s HRDB324 24VDC Onboard + / -5% 1 - 100m HRDB121 12VDC Onboard + / -5% 1 - 100s HRDB423 120VAC Onboard + / -5% 0.1 - 10m HRDB124 12VDC Onboard + / -5% 1 - 100m HRDB623 230VAC Onboard + / -5% 0.1 - 10m HRDB21A65M 24VAC Fixed + / -1% 65m If you don't find the part you need, call us for a custom product 800-843-8848 (c) 2016 Littelfuse Protection Relays & Controls www.littelfuse.com/hrdb Rev: 1-A-062116 Time Delay Relays Dedicated - Delay-on-Break HRDB SERIES Specifications Accessories P1015-13 (AWG 10/12), P1015-64 (AWG 14/16) Female Quick Connect These 0.25 in. (6.35 mm) female terminals are constructed with an insulator barrel to provide strain relief. P1015-18 Quick Connect to Screw Adapter Screw adapter terminal designed for use with all modules with 0.25 in. (6.35 mm) male quick connect terminals. C103PM (AL) DIN Rail 35 mm aluminum DIN rail available in a 36 in. (91.4 cm) length. P1023-20 DIN Rail Adapter Allows module to be mounted on a 35 mm DIN type rail with two #10 screws. External Resistance vs. Time Delay Time Delay Type Microcontroller circuitry Range 0.1s - 100m in 5 adjustable ranges or fixed Repeat Accuracy 0.5 % or 20ms, whichever is greater Tolerance (Factory Calibration) 1%, 5% Reset Time 150ms Initiate Time 20ms Time Delay vs Temp. & Voltage 2% Input Voltage 12 or 24VDC; 24, 120, or 230VAC Tolerance 12VDC & 24VDC -15% - 20% 24 to 230VAC -20% - 10% AC Line Frequency 50/60 Hz Power Consumption AC 4VA; DC 2W Output Type Electromechanical relay Form Isolated, SPDT Ratings SPDT-NO SPDT-NC General Purpose 125/240VAC 30A 15A Resistive 125/240VAC 30A 15A 28VDC 20A 10A Motor Load 125VAC 1 hp* 1/4 hp** 240VAC 2 hp** 1 hp** Life Mechanical - 1 x 10 6; Electrical - 1 x 105, *3 x 10 4, **6,000 Protection Surge IEEE C62.41-1991 Level A Circuitry Encapsulated Dielectric Breakdown 2000V RMS terminals to mounting surface Insulation Resistance 100 M Polarity DC units are reverse polarity protected Mechanical Mounting Surface mount with one #10 (M5 x 0.8) screw Dimensions H 50.8 mm (2"); W 50.8 mm (2"); D 38.1 mm (1.51") Termination 0.25 in. (6.35 mm) male quick connect terminals Environmental Operating/Storage Temperature -40 to 60C / -40 to 85C Humidity 95% relative, non-condensing Weight 3.9 oz (111 g) Function Diagram DELAY-ON-BREAK (OFF-DELAY) (c) 2016 Littelfuse Protection Relays & Controls www.littelfuse.com/hrdb V = Voltage S1 = Initiate Switch NO = Normally Open Contact NC = Normally Closed Contact TD = Time Delay t = Incomplete Time Delay R = Reset = Undefined Time Rev: 1-A-062116