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Littelfuse ORB2 Series

3 variants · Littelfuse

About the Littelfuse ORB2 Series

The Littelfuse ORB2 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 supply voltage of 24 VAC. Variants differ by delay time and timing adjustment method, so you can match the exact delay time your application requires using the selection guide below. All listed Littelfuse ORB2 Series part numbers are active and orderable.

Select a variant by

Delay time
0.05 Sec to 3 Sec · 3 Sec to 300 Sec · Fixed, 1 Sec
Timing adjustment method
Fixed · Screwdriver Slot

Shared specifications

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

Variant comparison

ParameterORB24A11DORB24A21DORB24A25
Delay timeFixed, 1 Sec0.05 Sec to 3 Sec3 Sec to 300 Sec
Timing adjustment methodFixedScrewdriver SlotScrewdriver Slot

Request a quote on any Littelfuse ORB2 Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.

All variants