4 variants · Littelfuse
The Littelfuse Littelfuse KSPS Series series groups 4 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 type of Solid State Relay. 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 KSPS Series part numbers are active and orderable.
| Parameter | KSPSP145SM | KSPSA21FT | KSPSN21B | KSPSN13MI |
|---|---|---|---|---|
| Delay time | Fixed, 45 Sec | 0.1 Sec to 10 Sec | 0.1 Sec to 10 Sec | Fixed, 3 Min |
| Supply voltage | 12 to 120VDC | 24 to 240VAC | 12 to 120VDC | 12 to 120VDC |
| Timing adjustment method | Fixed | Screwdriver Slot | Screwdriver Slot | Fixed |
| Timing initiate method | Input Voltage, Trigger Signal | Input Voltage, Trigger Signal | Input Voltage, Trigger Signal | Input Voltage |
Request a quote on any Littelfuse KSPS 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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