Time Delay Relays Dedicated - Delay-on-Make KRDM SERIES Description The KRDM 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 KRDM Series is a cost effective approach for OEM applications that require small size, isolation, reliability, and long life. Operation (Delay-on-Make) Upon application of input voltage, the time delay begins. The output is de-energized before and during the time delay. At the end of the time delay, the output relay energizes and remains energized until input voltage is removed. Reset: Removing input voltage resets the time delay and output. Features & Benefits FEATURES BENEFITS Microcontroller based Repeat Accuracy + / - 0.5% Compact, low Wiring Diagram Allows flexiblility for OEM applications cost design Isolated, 10A, SPDT Allows control of loads for AC or DC voltages output contacts L1 N/L2 V = Voltage Encapsulated Protects against shock, vibration, and humidity C = Common, Transfer Contact NO = Normally Open NC = Normally Closed Accessories A knob is supplied for adjustable units, or R terminals 4 & 5 for T P1004-95, P1004-95-X Versa-Pot external adjust. See external Panel mountable, industrial potentiometer adjustment vs time delay chart. recommended for remote time delay adjustment. Relay contacts are isolated. 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 DELAY MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY KRDM1110S 12VDC Fixed 10s KRDM4110M 120VAC Fixed 10m KRDM1130S 12VDC Fixed 30s KRDM4110S 120VAC Fixed 10s KRDM120 12VDC Onboard knob 0.1 - 10s KRDM4145S 120VAC Fixed 45s KRDM121 12VDC Onboard knob 1 - 100s KRDM420 120VAC Onboard knob 0.1 - 10s KRDM2110M 24VAC/DC Fixed 10m KRDM421 120VAC Onboard knob 1 - 100s KRDM215M 24VAC/DC Fixed 5m KRDM424 120VAC Onboard knob 1 - 100m KRDM220 24VAC/DC Onboard knob 0.1 - 10s KRDM430 120VAC External 0.1 - 10s KRDM221 24VAC/DC Onboard knob 1 - 100s KRDM433 120VAC External 0.1 - 10m KRDM223 24VAC/DC Onboard knob 0.1 - 10m KRDM6115M 230VAC Fixed 15m KRDM310.2S 24VDC Fixed 0.2s If you dont find the part you need, call us for a custom product 800-843-8848 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062216 www.littelfuse.com/krdmTime Delay Relays Dedicated - Delay-on-Make KRDM SERIES Accessories Specifications Time Delay P1015-13 (AWG 10/12), P1015-64 (AWG 14/16) Range 0.1s - 100m in 5 adjustable ranges or fixed Female Quick Connect Repeat Accuracy 0.5% or 20ms, whichever is greater These 0.25 in. (6.35 mm) female terminals are Tolerance constructed with an insulator barrel to provide Factory Calibration) 5% strain relief. Recycle Time 150ms P1015-18 Quick Connect to Screw Adapter Time Delay vs Temp. Screw adapter terminal designed for use with & Voltage 5% all modules with 0.25 in. (6.35 mm) male quick Input connect terminals. Voltage 12, 24 or 110VDC 24, 120 or 230VAC C103PM (AL) DIN Rail Tolerance 35 mm aluminum DIN rail available in a 36 in. 12VDC & 24VAC/DC -15% - 20% (91.4 cm) length. 110VDC 120 & 230VAC -20% - 10% AC Line Frequency/DC Ripple 50/60 Hz / 10% P1023-20 DIN Rail Adapter Power Consumption AC 2VA DC 2W Allows module to be mounted on a 35 mm DIN Output type rail with two 10 screws. Type Isolated relay contacts Form SPDT Rating (at 40C) 10A resistive 125VAC External Resistance vs. Time Delay 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 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 (2.0) W 50.8 mm (2.0) D 30.7 mm (1.21) Termination 0.25 in. (6.35 mm) male quick connect terminals Environmental Operating/Storage Temperature -20 to 60C / -40 to 85C Humidity 95% relative, non-condensing Weight 2.6 oz (74 g) Function Diagram Output Current /Ambient Temperature V = Voltage DELAY-ON-MAKE (ON-DELAY) NO = Normally Open Contact NC = Normally Closed Contact TD = Time Delay R = Reset = Undened Time 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062216 www.littelfuse.com/krdm