Littelfuse ERDM427, Delay On Make Timer Series, 120VAC, On-Delay Time Delay Relay DPDT (2 Form C) 0.1 Min ~ 5 Min Delay 10A @ 120/240VAC Chassis Mount

In stock
Regular price $158.05
Rated voltage

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The ERDM Series is a combination of digital electronics and a reliable electromechanical relay. These devices offer a DPDT relay output for relay logic circuits, and isolation of input to output voltages. Cost effective for OEM applications, such as random starting, sequencing ON, switch de-bouncing, anti-short cycling, and other common delay-on-make applications.

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 energizes and remains energized until input voltage is removed.

Reset: Removing input voltage resets the time delay and output.

Pre-order 6-8 Weeks


Time Delay  
Type Digital integrated circuitry
Range 0.1s - 500m in 11 adjustable ranges,
0.1s - 1000m fixed
Adjustment Fixed, onboard or external adjust
Repeat Accuracy ±0.5%
Tolerance (Factory Calibration) ≤ ±10%
Reset Time ≤ 150ms
Time Delay vs Temp. & Voltage ≤ ±2%
Voltage 12, 24, or 120VDC; 24, 120, or 230VAC
Tolerance 12VDC & 24VDC/AC:    -15% - 20%
120VDC/AC & 230VAC: -20% - 10%
AC Line Frequency 50/60 Hz
Type Isolated relay contacts
Rating 10A resistive @ 120/240VAC & 28VDC;
1/3 hp @ 120/240VAC
Life Mechanical - 1 x 10⁷ ; Full Load - 1 x 10⁶
Isolation Voltage ≥ 1500V RMS input to output
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
Mounting Surface mount with two #6 (M3.5 x 0.6) screws
Dimensions H 88.9 mm (3.5”);
W 63.5 mm (2.5”);
D 43.2 mm (1.7”)
Termination 0.25 in. (6.35 mm) male quick connect terminals
Temperature -40° to 65°C / -40° to 85°C
Weight ≅ 5.7 oz (162 g)