The XT5NU340AFYN000XXX: The EKIP DIP LSI trip unit provides electronic protection with L (long-time), S (short-time), and I (instantaneous) curves, plus ground-fault capability. The 400 A frame rating means this breaker handles full-rated current without derating in a 40 °C ambient — typical for a main feeder or large motor branch circuit in a UL 489 panel. The fixed front terminals accept standard bus-bar or cable connections; no accessory terminal kit is needed for the line and load sides.
ABB XT5NU340AFYN000XXX NEXT5N 400 EKIP DIP LSI, 400 A
MPNXT5NU340AFYN000XXX
ABB NEXT5N 400 molded case circuit breaker, 400 A frame, EKIP DIP LSI electronic trip unit, 3-pole, fixed front terminals, UL/C certified, order code XT5NU340AFYN000XXX.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Frequently asked questions
Where can I buy the XT5NU340AFYN000XXX?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment.
What does the EKIP DIP LSI trip unit do?
The EKIP DIP LSI is an electronic trip unit offering long-time (L), short-time (S), and instantaneous (I) protection curves, plus ground-fault detection. It allows field-adjustable settings for coordination in selective systems.
MPN
XT5NU340AFYN000XXX