5 variants · Littelfuse
The Littelfuse Littelfuse THD2 Series series groups 5 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. Every variant in the range shares a common mounting of Chassis Mount, package of Bulk and timing initiate method of Input Voltage. Variants differ by delay time, supply voltage and timing adjustment method, so you can match the exact delay time your application requires using the selection guide below. All listed Littelfuse THD2 Series part numbers are active and orderable.
| Parameter | THD2C420 | THD2C633 | THD2C423 | THD2C433 | THD2C620 |
|---|---|---|---|---|---|
| Delay time | 0.1 Sec to 10 Sec | 0.1 Min to 10 Min | 0.1 Min to 10 Min | 0.1 Min to 10 Min | 0.1 Sec to 10 Sec |
| Supply voltage | 120 VAC | 230 VAC | 120 VAC | 120 VAC | 230 VAC |
| Timing adjustment method | External Resistor | Screwdriver Slot | External Resistor | Screwdriver Slot | External Resistor |
Request a quote on any Littelfuse THD2 Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.
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