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Littelfuse HRDB Time Delay Relays Series

9 variants · Littelfuse

About the Littelfuse HRDB Time Delay Relays Series

The Littelfuse HRDB Time Delay Relays Series series groups 9 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. The listed variants share a common mounting of Chassis Mount, package of Bulk and timing initiate method of Input Voltage, Trigger Signal. 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.

Select a variant by

Delay time
0.1 Min to 10 Min · 1 Min to 100 Min · 1 Sec to 100 Sec · Fixed, 7 Sec · Fixed, 10 Min
Supply voltage
12 VDC · 24 VAC · 24 VDC · 120 VAC · 230 VAC
Timing adjustment method
Fixed · Screwdriver Slot

Shared specifications

Mounting
Chassis Mount
Package
Bulk
Timing initiate method
Input Voltage, Trigger Signal
Type
Mechanical Relay

Variant comparison

ParameterHRDB1110MHRDB324HRDB423HRDB623HRDB117SHRDB223
Delay timeFixed, 10 Min1 Min to 100 Min0.1 Min to 10 Min0.1 Min to 10 MinFixed, 7 Sec0.1 Min to 10 Min
Supply voltage12 VDC24 VDC120 VAC230 VAC12 VDC24 VAC
Timing adjustment methodFixedScrewdriver SlotScrewdriver SlotScrewdriver SlotFixedScrewdriver Slot

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

All variants