ABB XT5NU340AFYN000XXX Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Quantity
ABB XT5NU340AFYN000XXX - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Providing reliable 600VAC protection, this 400A molded case circuit breaker is equipped with an Ekip Dip LSI electronic trip unit. Users can configure long-time, short-time, and instantaneous settings for optimal system coordination. Built for unit mount configurations, it easily installs into ReliaGear neXT panelboards and switchboards. This model acts as an exact cross-reference for older T5N400BL breakers. Rated at 35kAIC at 480V, it features front terminals without lugs.Specifications
| Brand | ABB |
|---|---|
| Series | XT5 |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC |
| Amperage Range | 160-400A |
|---|
| Frame Type | XT5N |
|---|---|
| Terminal Type | Lugs |
| For Use With | ReliaGear neXT Panelboards, Switchboards |
| Wire Gauge | 2x 2/0 AWG - 500 kcmil (Cu/Al) |
| Max Wire | 500 kcmil |
| Min Wire | 2/0 AWG |
| 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, HACR, IEC, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, True RMS Sensing, Reverse Feed |
Product FAQs
6 answersWhich panelboards are compatible with the XT5NU340AFYN000XXX circuit breaker?
This XT5N frame breaker is designed for installation in ABB ReliaGear neXT panelboards and switchboards.
What wire sizes are accepted by the terminals on this 400A breaker?
The factory-installed lugs accept two copper or aluminum conductors per phase, with a wire range of 2/0 AWG to 500 kcmil.
What does the LSI trip function provide on this XT5 breaker?
The LSI designation indicates an Ekip electronic trip unit with adjustable Long-Time, Short-Time, and Instantaneous protection. This allows electricians to fine-tune the trip curve for optimal selective coordination with other breakers in the system.
Does the XT5NU340AFYN000XXX provide ground fault protection?
No, this breaker features an LSI trip unit (Long-Time, Short-Time, and Instantaneous). It does not include the 'G' function required for integrated equipment ground fault protection.
Can the XT5NU340AFYN000XXX be used to replace older Tmax T5 breakers?
Yes, this model is the modern SACE Tmax XT equivalent and serves as a direct cross-reference for older T5N 400A breakers, including the T5N400BL.
Does this breaker require a special mounting kit for installation?
As a unit-mount breaker, it bolts directly into the chassis of compatible switchboards and ReliaGear neXT panelboards without requiring a separate plug-in or drawout assembly.
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