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
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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
Specifications
| 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% |
| Input | |
| 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 |
| Output | |
| Type | Isolated relay contacts |
| Form | DPDT |
| Rating |
10A resistive @ 120/240VAC & 28VDC; 1/3 hp @ 120/240VAC |
| Life | Mechanical - 1 x 10⁷ ; Full Load - 1 x 10⁶ |
| Protection | |
| Isolation Voltage | ≥ 1500V RMS input to output |
| Insulation Resistance | ≥ 100 MΩ |
| Polarity | DC units are reverse polarity protected |
| Mechanical | |
| 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 |
| Environmental | |
| Operating/Storage | |
| Temperature | -40° to 65°C / -40° to 85°C |
| Weight | ≅ 5.7 oz (162 g) |