Littelfuse KSD2221, KSD2 Series, 24VAC, Interval Time Delay Relay SPST-NO (1 Form A) 1 Sec ~ 100 Sec Delay Chassis Mount
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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.
Pre-order 6-8 Weeks
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 Temp. & 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) |