ERDI Series - Interval Timer

Littlefuse Interval Relays
The ERD Series is a combination of digital electronics and an electromechanical relay. DPDT relay output for relay logic circuits, and isolation of input to output voltages. For applications, such as interval on, pulse shaping, minimum run time, etc. The ERD Series is encapsulated to protect the circuitry from shock, vibration and humidity.

Operation (Interval)
Upon application of input voltage, time delay begins, and output relay energizes. At the end of time delay, output de-energizes until input voltage is removed.
Reset: Removing input voltage resets the time delay and the output.

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Storage Temperature (F/C)Time Delay RangeSample capableCompare
ERDI436120VACDPDT-40° to 85°C (-40°F to 185°F)0.6s - 60s adjustableNo
ERDI6210230VACDPDT-40° to 85°C (-40°F to 185°F)1m - 100m adjustableNo