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Littelfuse TDR4 Time Delay Relays Series

3 variants · Littelfuse

About the Littelfuse TDR4 Time Delay Relays Series

The Littelfuse TDR4 Time Delay Relays 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 Socket, package of Bulk and supply voltage of 120 VAC. Variants differ by delay time, so you can match the exact delay time your application requires using the selection guide below. All listed Littelfuse TDR4 Time Delay Relays Series part numbers are active and orderable.

Select a variant by

Delay time
0.1 Sec to 102.3 Sec · 1 Sec to 1023 Sec · 10 Sec to 10230 Sec

Shared specifications

Mounting
Socket
Package
Bulk
Supply voltage
120 VAC
Timing adjustment method
DIP Switches
Timing initiate method
Input Voltage
Type
Mechanical Relay

Variant comparison

ParameterTDR4A13TDR4B22TDR4B23
Delay time0.1 Sec to 102.3 Sec1 Sec to 1023 Sec10 Sec to 10230 Sec

Request a quote on any Littelfuse TDR4 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