描述 Description

The THD3C42A0 combines accurate timing circuitry with high

power, solid-state switching. It can switch motors, lamps, and

heaters directly without a contactor. The THD3C42A0 has equal

on and off time delays. A single RT sets both time delays. You

can reduce labor, component cost, and increase reliability with

these small, easy-to-use, Digi-Power timers.

Operation (Recycling Flasher - 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 T1 ON time.

Operation (Recycling Flasher - OFF Time First)

Upon application of input voltage, the T2 OFF time begins. At

the end of the OFF time, the T1 ON time begins and the load

energizes. At the end of T1, T2 begins and the load de-energizes.

This cycle repeats until input voltage is removed.

Reset: Removing input voltage resets the output and the

sequence to T2 OFF time.

FEATURES BENEFITS

Microcontroller based Repeat Accuracy + / -0.5,

Factory calibration + / - 1

Compact, low

cost design

Allows flexiblility for OEM applications and reduces

labor and component costs

High load currents up

to 20A, 200A inrush

Allows direct operation of motors, lamps, and

heaters without a contactor

Totally solid state

and encapsulated

No moving parts to arc and wear out over time and

encapsulated to protect against shock, vibration,

and humidity

Metalized

mounting surface Facilitates heat transfer in high current applications