Littelfuse ESDR420A4, ESDR Series, 120VAC, Repeat Cycle Time Delay Relay SPST-NO (1 Form A) 0.1 Sec ~ 10 Sec Delay Chassis Mount

In stock
SKU: ESDR420A4
Regular price $155.05
Rated voltage
Adjustment

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The ESDR Series offers independent time adjustment of both delay periods. Adjustment options include fixed, onboard or external adjust. The ESDR is recommended for air drying, automatic oiling, life testing, chemical metering and automatic duty cycling. This 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 <±5%. The repeat accuracy, under stable conditions, is 0.1% of the selected time delay. This series is designed for input voltages of 12VDC to 230VAC in five ranges. Time delays of 0.1 seconds to 1000 minutes are available in six ranges. The output is rated 1A steady and 10A inrush. The modules are totally solid state and encapsulated to protect the electronic circuitry.

Operation (Recycling - ON Time First)

Upon application of input voltage, the output energizes and the T1, ON time begins. At the end of the ON time, the output de-energizes and the T2, OFF time begins. At the end of the OFF time, the output energizes and the cycle repeats as long as input voltage is applied.

Reset: Removing input voltage resets the output and time delays, and returns the sequence to the first delay

Operation (Recycling - OFF Time First)

Upon application of input voltage, the T2 OFF time begins. At the end of the OFF time, the output energizes and the T1 ON time begins. At the end of the ON time, the output de-energizes and the cycle repeats as long as input voltage is applied.

Reset: Removing input voltage resets the output and time delays, and returns the sequence to the first delay.

Pre-order 6-8 Weeks

Specifications

Time Delay  
Range 0.1s - 1000m in 6 adjustable ranges or fixed
Repeat Accuracy ±0.1% or 20ms, whichever is greater
Tolerance (Factory Calibration) ≤ ±5%
Reset Time ≤ 150ms
Time Delay vs Temp. & Voltage ≤ ±2%
Input
Voltage 12 or 24VDC; 24, 120, or 230VAC
Tolerance ±20%
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 1W
Output
Type Solid state
Rating 1A steady state, 10A inrush at 60°C
OFF State Leakage Current AC ≅ 5mA @ 230VAC; DC ≅ 1mA
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 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 75°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68g)