ABB XT5SU340ABFN000XXX Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Quantity
ABB XT5SU340ABFN000XXX - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Constructed for maximum reliability, this 400A MCCB serves critical commercial, industrial, and marine applications. Operating at 600VAC or 600VDC, the 3-pole unit ensures continuous power distribution and safety. It mounts into ReliaGear neXT panelboards, switchboards, and motor control centers. This breaker is also an exact replacement for the legacy T5S400BW model, simplifying facility upgrades. The breaker features an adjustable thermal magnetic trip and provides a 50kAIC rating at 480VAC.Specifications
| Brand | ABB |
|---|---|
| Series | XT5 |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 600VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 50kA @ 250VDC, 35kA @ 500VDC, 25kA @ 600VDC |
| Amperage Range | 280-400A |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | ReliaGear neXT Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 2x 2/0 AWG - 500 kcmil |
| Max Wire | 500 kcmil |
| Min Wire | 2/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable Thermal, Adjustable Magnetic |
| Available Options | Auxiliary Switch, Shunt Trip, Undervoltage Release, Motor Operator, Handle Lock |
|---|---|
| Accessories | None (Standard Configuration) |
| 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, Reverse Feed |
Product FAQs
6 answersWhat equipment is compatible with the XT5SU340ABFN000XXX?
This XT5 frame breaker is designed to mount directly into ABB ReliaGear neXT panelboards, switchboards, and motor control centers.
Can the XT5SU340ABFN000XXX replace a legacy GE Spectra SG600 breaker?
Yes, the ABB Tmax XT5 series is the official replacement for the retired GE Spectra SG600 frame. To install this breaker in an existing Spectra plug-in panelboard or switchboard, a specific Tmax XT retrofit kit is required.
What does the "S" in the XT5S part number signify?
The "S" indicates the interrupting rating tier of the breaker. For the XT5 frame, the "S" tier provides a short-circuit interrupting rating of 50kA at 480VAC and 100kA at 240VAC.
How do you adjust the TMA trip unit on this 400A breaker?
The Thermal Magnetic Adjustable (TMA) trip unit features rotary dials on the front of the breaker. These dials allow electricians to independently adjust the thermal overload threshold (from 70 to 100 percent of the 400A rating) and the magnetic short-circuit pickup to coordinate with downstream devices.
What is the wire capacity for the standard lugs on this breaker?
The factory-installed lugs are dual-wire rated, accepting two copper or aluminum conductors per phase. The supported wire gauge ranges from 2/0 AWG to 500 kcmil.
Can this thermal-magnetic breaker be used in DC power systems?
Yes, because it utilizes a thermal-magnetic trip unit rather than an electronic one, this breaker is fully rated for DC applications up to 600VDC. This makes it suitable for solar, battery storage, or industrial DC distribution networks.
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