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© 2016 Littelfuse Protection Relays & Controls Time Delay Relays Dedicated - Interval www.littelfuse.com/ksd2 Rev: 1-A-062116 KSD2 SERIES L1 N/L2 Interval Timer

Description

The KSD2 Series is designed for general purpose commercial and industrial applications where a small, cost effective, reliable, solid-state timer is required. The factory calibration for fixed time delays is within 5% of the target time delay. The repeat accuracy, under stable conditions, is 0.5% of the selected time delay. This series is designed for input voltages of 24, 120 or 230VAC. Time delays of 0.1 seconds to 1000 minutes are available in 6 ranges. The output is rated 1A steady and 10A inrush. The modules are totally solid state and encapsulated to protect the electronic circuitry. An excellent choice for most OEM pulse shaping, maximum run time, and other process control applications. Operation (Interval) Upon application of input voltage, the time delay begins. The output 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. Features & Benefits FEATURES BENEFITS Microcontroller based Repeat Accuracy + / - 0.5%, + / -5% time delay accuracy Compact, low cost design Allows flexiblility for OEM applications 1A Steady solid-state output, 10A inrush Provides 100 million operations in typical conditions. T otally solid state and encapsulated No moving parts to arc and wear out over time and encapsulated to protect against shock, vibration, and humidity 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. 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. Wiring Diagram RT is used when external adjustment is ordered.

Ordering Information

MODEL INPUT VOLTAGE VAC ADJUSTMENT TIME DELAY KSD2221 24 External 1 - 100s KSD2413M 120 Fixed 3m KSD2420 120 External 0.1 - 10s If you don’t find the part you need, call us for a custom product 800-843-8848

© 2016 Littelfuse Protection Relays & Controls Time Delay Relays Dedicated - Interval www.littelfuse.com/ksd2 Rev: 1-A-062116 Accessories 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 This chart applies to externally adjustable part numbers. The time delay is adjustable over the time delay range selected by varying the resistance across the RT terminals; as the resistance increases the tie delay increases. When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment. Examples: 1 to 50 S adjustable time delay, select time delay range 1 and a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT. Function Diagram INTERVAL (IMPULSE-ON) V = Voltage NO = Normally Open Contact NC = Normally Closed Contact TD = Time Delay R = Reset = Undefined Time KSD2 SERIES Specifications Time Delay Range 0.1s - 1000m in 6 adjustable ranges or fixed Repeat Accuracy ±0.5% or 20ms, whichever is greater Tolerance (Factory Calibration) ≤ ±5% Reset Time ≤ 150ms Time Delay vs. Temperature & Voltage ≤ ±10% Input Voltage 24, 120, or 230VAC Tolerance ±20% AC Line Frequency 50/60 Hz Power Consumption ≤ 2VA Output Type Solid state Form NO, closed during timing Maximum Load Current 1A steady state, 10A inrush at 60°C OFF State Leakage Current ≅ 5mA @ 230VAC Voltage Drop ≅ 2.5V @ 1A Protection Circuitry Encapsulated Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface Insulation Resistance ≥ 100 MΩ Mechanical Mounting Surface mount with one #10 (M5 x 0.8) screw Dimensions H 50.8 mm (2”); W 50.8 mm (2”); D 30.7 mm (1.21”) Termination 0.25 in. (6.35 mm) male quick connect terminals Environmental Operating/Storage Temperature -40° to 60°C / -40° to 85°C Humidity 95% relative, non-condensing Weight ≅ 2.4 oz (68 g)