Time Delay Relays Dedicated - Interval KRDI SERIES Description The KRDI Series is a compact time-delay relay measuring 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 KRDI Series is a cost effective approach for OEM applications that require small size, isolation, reliability, and long life. Operation (Interval) Upon application of input voltage, the time delay begins. The output relay energizes during the time delay. At the end of the time delay, the output de-energizes and remains de-energized until input voltage is removed. Reset: Removing input voltage resets the time delay and the output. Wiring Diagram Features & Benefits FEATURES BENEFITS Compact, low cost L1 N/L2 design measuring 2 in. Allows flexiblility for OEM applications V = Voltage (50.8mm) square C = Common, Transfer Contact Repeat Accuracy + / - 0.5%, Microcontroller based NO = Normally Open Factory calibration + / - 5% NC = Normally Closed Isolated, 10A, SPDT Allows control of loads for AC or DC voltages output contacts A knob is supplied for Encapsulated Protects against shock, vibration, and humidity adjustable units, or R T terminals 4 & 5 for external adjust. See external Accessories adjustment vs time delay chart. P1004-95, P1004-95-X Versa-Pot Panel mountable, industrial potentiometer Relay contacts are isolated. 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 P1015-13 (AWG 10/12), P1015-64 (AWG 14/16) MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY Female Quick Connect KRDI120 12VDC Onboard knob 0.1 - 10s These 0.25 in. (6.35 mm) female terminals are KRDI121 12VDC Onboard knob 1 - 100s constructed with an insulator barrel to provide strain relief. KRDI122 12VDC Onboard knob 10 - 1000s P1015-18 Quick Connect to Screw Adapter KRDI2110S 24VAC/VDC Fixed 10s Screw adapter terminal designed for use with KRDI2160S 24VAC/VDC Fixed 60s all modules with 0.25 in. (6.35 mm) male quick KRDI220 24VAC/VDC Onboard knob 0.1 - 10s connect terminals. KRDI320 24VDC Onboard knob 0.1 - 10s KRDI420 120VAC Onboard knob 0.1 - 10s KRDI424 120VAC Onboard knob 1 - 100m If you dont find the part you need, call us for a custom product 800-843-8848 2018 Littelfuse Protection Relays & Controls Rev: 1-A-101018 wwwwww.littelfuse.com/krdi.littelfuse.com/Time Delay Relays Dedicated - Interval KRDI SERIES Accessories External Resistance vs. Time Delay 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. Specifications Time Delay Range 0.1s - 100m in 5 adjustable ranges or fixed Repeat Accuracy 0.5% or 20ms, whichever is greater Tolerance (Factory Calibration) 5% Reset Time 150ms Time Delay vs Temp. & Voltage 5% Input Voltage 12, 24 or 110VDC 24, 120 or 230VAC Tolerance 12VDC & 24VDC/AC -15% - 20% 110VDC, 120VAC or 230VAC -20% - 10% AC Line Frequency/DC Ripple 50/60 Hz / 10% Output Current/Ambient Temperature Power Consumption AC 2VA DC 2W Output Type Isolated relay contacts Form SPDT Rating (at 40C) 10A resistive 125VAC 5A resistive 230VAC & 28VDC 1/4 hp 125VAC Max. Switching Voltage 250VAC 7 5 Life (Operations) Mechanical - 1 x 10 Electrical - 1 x 10 Protection Circuitry Encapsulated Isolation Voltage 1500V RMS input to output Function Diagram Insulation Resistance 100 M Polarity DC units are reverse polarity protected V = Voltage INTERVAL (IMPULSE-ON) Mechanical NO = Normally Mounting Surface mount with one 10 (M5 x 0.8) screw Open Contact Dimensions H 50.8 mm (2) W 50.8 mm (2) NC = Normally D 30.7 mm (1.21) Closed Contact Termination 0.25 in. (6.35 mm) male quick connect terminals TD = Time Delay Environmental R = Reset = Undened Operating/Storage Time Temperature -20 to 60C / -40 to 85C Humidity 95% relative, non-condensing Weight 2.6 oz (74 g) 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. 2018 Littelfuse Protection Relays & Controls Rev: 1-A-101018 wwwwww.littelfuse.com/krdi.littelfuse.com/