ABB XT5NU340AEFF000XXX Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Quantity
ABB XT5NU340AEFF000XXX - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for commercial power distribution, the ABB XT5NU340AEFF000XXX is a 400A, three-pole molded case circuit breaker from the SACE Tmax XT5 series. This unit mounts into ReliaGear neXT panelboards and switchboards, offering a reliable replacement for legacy T5N400BL breakers. It includes front terminals for straightforward installation. Equipped with an Ekip Dip LS/I electronic trip unit, it provides adjustable protection. With a 35 kAIC rating at 480VAC, it ensures robust fault interruption.Specifications
| Brand | ABB |
|---|---|
| Series | XT5 |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 600VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600Y/347VAC, 16kA @ 600VDC |
| Amperage Range | 160-400A |
|---|
| Frame Type | XT5 |
|---|---|
| Terminal Type | Lugs |
| For Use With | ReliaGear neXT Panelboards, Switchboards |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Motor Operator |
|---|---|
| Accessories | Lugs Not Included, Front Terminals Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CCC, CSA, cULus, IEC, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, True RMS Sensing, Reverse Feed |
Product FAQs
8 answersWhat panelboards are compatible with the XT5NU340AEFF000XXX?
This breaker is designed for use in ABB and GE ReliaGear neXT panelboards and switchboards.
Can this XT5 breaker replace legacy GE circuit breakers?
Yes, the XT5NU340AEFF000XXX serves as a modern replacement for legacy GE T5N400BL molded case circuit breakers.
What type of terminal connections are included with this breaker?
The FF in the part number indicates it comes with front terminals for fixed mounting configurations.
What does the N in the XT5NU340AEFF000XXX part number signify?
The N designates a normal interrupting capacity, which provides a 35kAIC rating at 480VAC.
What adjustability does the Ekip Dip LSI trip unit provide?
The solid-state Ekip Dip LSI trip unit allows you to adjust the Long-Time, Short-Time, and Instantaneous pickup and delay settings to coordinate with your specific system requirements.
Can power be supplied from the bottom terminals of this XT5 breaker?
Yes, power can be supplied from the bottom terminals of the XT5 breaker up to 500V without requiring a backplate on the bottom terminals.
What frame size is the XT5NU340AEFF000XXX?
It is built on the ABB SACE Tmax XT5 frame, which supports continuous current ratings up to 600A, though this specific unit is factory-configured for 400A.
What type of protection does the Ekip Dip trip unit offer?
The solid-state Ekip Dip electronic trip unit provides precise overcurrent and short-circuit protection, allowing for exact adjustments to the trip curve that traditional thermal-magnetic breakers cannot offer.
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