How do the Littelfuse Littelfuse ECSW Series variants differ?

Littelfuse ECSW Series part numbers differ by delay time, supply voltage and trip range. Use the selection guide above to pick by delay time.

How many Littelfuse Littelfuse ECSW Series part numbers are listed?

6 Littelfuse Littelfuse ECSW Series part numbers are listed, each with specifications and a datasheet where available.

How do I get pricing and lead time for Littelfuse Littelfuse ECSW Series?

Request a quote (RFQ) for any Littelfuse ECSW Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.

Littelfuse ECSW Series

6 variants · Littelfuse

About the Littelfuse Littelfuse ECSW Series series

The Littelfuse Littelfuse ECSW Series series groups 6 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, operating temperature of 60 °C and output signal of Relay. Variants differ by delay time, supply voltage and trip range, so you can match the exact delay time your application requires using the selection guide below. All listed Littelfuse ECSW Series part numbers are active and orderable.

Parameter	ECSW3LABT	ECSW4HBHT	ECSW4LADT	ECSW4LBHT	ECSW4MACT	ECSW6MBHT
Delay time	0.15 Sec to 7 Sec	0.5 Sec to 50 Sec	0.15 Sec to 7 Sec	0.5 Sec to 50 Sec	0.15 Sec to 7 Sec	0.5 Sec to 50 Sec
Supply voltage	24 VAC	120 VAC	120 VAC	120 VAC	120 VAC	230 VAC
Trip range	0.5–5 A AC	5–50 A AC	0.5–5 A AC	5–50 A AC	2–20 A AC	2–20 A AC

Littelfuse ECSW Series

About the Littelfuse Littelfuse ECSW Series series

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All variants

ECSW3LABT

ECSW4HBHT

ECSW4LADT

ECSW4LBHT

ECSW4MACT

ECSW6MBHT

ECSW3LABT

ECSW4HBHT

ECSW4LADT

ECSW4LBHT

ECSW4MACT

ECSW6MBHT