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Littelfuse KSD2 Series

3 variants · Littelfuse

About the Littelfuse KSD2 Series

The Littelfuse KSD2 Series series groups 3 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 KSD2 Series part numbers are active and orderable.

Select a variant by

Delay time
0.1 Sec to 10 Sec · 1 Sec to 100 Sec · Fixed, 3 Min
Supply voltage
24 VAC · 120 VAC
Timing adjustment method
External Resistor · Fixed

Shared specifications

Mounting
Chassis Mount
Package
Bulk
Timing initiate method
Input Voltage
Type
Solid State Relay

Variant comparison

ParameterKSD2413MKSD2420KSD2221
Delay timeFixed, 3 Min0.1 Sec to 10 Sec1 Sec to 100 Sec
Supply voltage120 VAC120 VAC24 VAC
Timing adjustment methodFixedExternal ResistorExternal Resistor

Request a quote on any Littelfuse KSD2 Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.

All variants