Description
The model 4390 is considered a TRUE delay-on-break timing relay because it does not
require any operating voltage or control switching to maintain the output contacts in a
transferred state after operating voltage has been removed. When the operating voltage is
applied, the output contacts transfer and remain in this state until the operating voltage
is removed, the delay-on-break timing period begins. At the end of the timing period, the
output contacts return to their de-energized state.
Specifications
| Operating Voltage |
100-250V AC, 50/60Hz, must be applied for a
minimum of 500 milliseconds to assure Delay-On-Break timing period. |
| Operating Current |
20 milliamperes maximum at 250V AC. |
| Output Type |
SPDT relay contacts. |
| Output Rating |
UL/CSA rated 8 amperes, 1/6HP 125V-250V AC. |
| Timing Range |
Fixed units available from .5-300 seconds,
Adjustable units are supplied in 5 ranges per chart below using external 1 Meg Ohm
potentiometer |
| Timing Repeatability |
+/- 5% nominal |
| Recycle Time |
A new cycle can be initiated 50 milliseconds
after completion of Delay-On-Break timing period |
| Operating Temperature |
-40 C to +65 C. |
4390 Specifications , click to view, right
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Ordering Information
| Model |
Timing Range |
| 4390A |
-A 0.5 - 5 seconds
-B 1-10 seconds -C 3 - 30 seconds
-D 6 - 60 seconds -E 30-300 seconds |
| 4390F |
Fixed time delay from 0.5 to 300 seconds |
Example : 4390A-3 operates on
105-250VAC with time delay adjustable from 3 - 30 seconds. |
