ABB XT4HU3070AFJ000XXX Molded Case Circuit Breaker
- 70A
- 3 Pole
- Unit Mount
ABB
XT4HU3070AFJ000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT4HU3070AFJ000XXX
Quantity
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ABB XT4HU3070AFJ000XXX - 70A 3 Pole Molded Case Circuit Breaker
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Description
Built for demanding industrial environments, the XT4HU3070AFJ000XXX is a 3-pole, 70A molded case circuit breaker from the SACE Tmax XT4 series. It utilizes fixed thermal and magnetic trip technology to safeguard critical electrical circuits. This unit mount MCCB is compatible with ABB ReliaGear neXT power panels, SB switchboards, and SACE Tmax XT panelboards. It also serves as a replacement for the legacy T4H070TW breaker. Boasting a high-capacity 150kA interrupt rating at 240VAC, it is robust.Specifications
| Brand | ABB |
|---|---|
| Series | XT4 |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 600VDC |
| Phase | 3 |
| AIC Rating | 150kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC, 50kA @ 250VDC, 65kA @ 600VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | ABB ReliaGear neXT Power Panels, ReliaGear SB Switchboards, SACE Tmax XT Panelboards |
| Wire Gauge | 4 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Load Side Lugs Included, Mounting Hardware |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CCC, CSA, cULus, IEC, KEMA, RINA, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Reverse Feed |
Product FAQs
7 answersWhat do the "H" and "U" signify in the XT4HU3070AFJ000XXX part number?
In the ABB SACE Tmax XT nomenclature, the "H" designates a High interrupting capacity tier, while the "U" indicates the breaker is UL 489 listed for the US market.
Can this XT4 circuit breaker be reverse fed?
Yes. According to ABB specifications, Tmax XT4 circuit breakers are suitable for reverse feed applications. Power can be supplied to the bottom terminals up to the maximum voltage rating without compromising the breaker's performance.
Does the Tmax XT series replace legacy GE circuit breakers?
Yes. Following ABB's acquisition of GE Industrial Solutions, the SACE Tmax XT series serves as the modern replacement for legacy GE Spectra RMS and Record Plus molded case circuit breakers. When upgrading older GE panelboards, specific retrofit hardware or ReliaGear neXT components may be required.
Is this 3-pole breaker approved for single-phase applications?
Yes. ABB Tmax XT4 three-pole circuit breakers equipped with thermal-magnetic trip units are UL-marked as suitable for single-phase applications up to 600VAC.
What is the ambient operating temperature range for the Tmax XT4?
Tmax XT circuit breakers can be used in ambient air temperatures varying between -25 degrees Celsius and +70 degrees Celsius. The reference temperature for the thermal trip unit calibration is +40 degrees Celsius, and derating may apply outside of this baseline.
Is the XT4H frame classified as a current-limiting breaker?
Yes. The XT4H frame has been tested to the UL 489 standard and is classified as a UL current-limiting circuit breaker. It is engineered to restrict peak current and specific let-through energy during a short circuit fault.
What does the unit mount configuration require for installation?
As a unit mount breaker, the XT4HU3070AFJ000XXX is designed to be bolted directly to a backpan or mounting plate rather than plugging into a busbar. It requires hardwired cable connections at both the line and load side lugs.
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