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ABB XT1NU3050AFF000XXX Molded Case Circuit Breaker
- 50A
- 3 Pole
- Unit Mount
ABB
XT1NU3050AFF000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT1NU3050AFF000XXX
Quantity
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ABB XT1NU3050AFF000XXX - 50A 3 Pole Molded Case Circuit Breaker
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Description
Built for commercial and industrial applications, the ABB XT1NU3050AFF000XXX is a 3-pole, 50A molded case circuit breaker from the SACE Tmax XT family. It delivers reliable overcurrent protection for distribution networks. This unit mount breaker installs into ABB ReliaGear neXT panelboards and ReliaGear SB switchboards. It replaces legacy T1N050TW breakers. Rated at 25 kAIC at 480VAC, it utilizes a fixed thermal-magnetic trip unit and comes with front flat terminals without lugs.Specifications
| Brand | ABB |
|---|---|
| Series | XT1 |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 50kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600Y/347VAC, 36kA @ 250VDC, 36kA @ 500VDC |
| Frame Type | XT1 |
|---|---|
| Terminal Type | Lugs |
| For Use With | ABB ReliaGear neXT Panelboards, ReliaGear SB Switchboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Shunt Trip, Undervoltage Release, Padlock Attachment, Alarm Switch, Lug Kits |
|---|---|
| Accessories | None (No Lugs Included) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, cULus, IEC, KEMA, RINA, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Double Insulated, Reverse Feed |
Product FAQs
6 answersWhich panelboards accept the XT1NU3050AFF000XXX breaker?
This breaker is designed for ABB ReliaGear neXT panelboards and ReliaGear SB switchboards. It utilizes a bolt-on connection and requires the corresponding XT1 mounting hardware for proper installation.
What does the N in the XT1NU3050AFF000XXX catalog number indicate?
The N specifies the interrupting capacity tier for the XT1 frame. It denotes a normal interrupting rating, which provides 50kA at 240VAC and 25kA at 480VAC.
Can the XT1NU3050AFF000XXX be reverse fed?
Yes. Because this breaker uses a thermal-magnetic trip unit, it does not have strict line and load terminal restrictions and can be safely reverse fed in most standard applications.
Can I adjust the trip curve on the XT1NU3050AFF000XXX?
No. This model is equipped with a fixed thermal and fixed magnetic trip unit. For applications requiring adjustable long-time or instantaneous settings, an ABB XT breaker with an Ekip electronic trip unit is required.
Is the Tmax XT1 series a direct replacement for legacy GE breakers?
While ABB Tmax XT breakers replace legacy GE lines like Record Plus and Spectra RMS, they are not exact drop-in replacements. Upgrading older GE panels to the XT1NU3050AFF000XXX typically requires specific retrofit kits or new mounting hardware.
Is the XT1NU3050AFF000XXX rated for direct current systems?
Yes, the thermal-magnetic trip unit allows this breaker to be used in DC applications. It is rated for up to 500VDC with a 36kA interrupting capacity.
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