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ABB XT1NU3050AAA000XXX Molded Case Circuit Breaker
- 50A
- 3 Pole
- Unit Mount
ABB
XT1NU3050AAA000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT1NU3050AAA000XXX
Quantity
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ABB XT1NU3050AAA000XXX - 50A 3 Pole Molded Case Circuit Breaker
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Description
Part of the SACE Tmax XT series, this 3-pole, 50A MCCB delivers robust power distribution for commercial and industrial facilities. It utilizes a fixed thermal-magnetic trip unit for dependable long-time and instantaneous (LI) protection. Designed for unit-mount installations, it integrates into ABB ReliaGear neXT panelboards and SB switchboards. It is also an exact replacement for the discontinued T1N050TL. With a 50kAIC rating at 240V, it features a current-limiting design.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, SACE Tmax XT Panelboards |
| Wire Gauge | 14 AWG - 1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle, DIN Rail Adapter, Terminal Shields |
|---|---|
| Accessories | Saddle Clamps |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, cULus, IEC, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed, Double Insulated |
Product FAQs
6 answersWhat legacy circuit breaker does the XT1NU3050AAA000XXX replace?
This ABB Tmax XT breaker serves as an exact replacement for the discontinued GE T1N050TL molded case circuit breaker.
What do the N and U designations mean in the XT1NU3050AAA000XXX catalog number?
In the ABB Tmax XT nomenclature, the N indicates a Normal interrupting capacity tier, while the U signifies that the breaker is tested and listed to UL 489 standards for North American applications.
Which electrical distribution panels are approved for use with this XT1 breaker?
This unit mount breaker is officially compatible with ABB ReliaGear neXT panelboards, ReliaGear SB switchboards, and SACE Tmax XT panelboards.
What wire sizes are compatible with the factory-installed lugs?
The standard lugs on this breaker accept wire gauges ranging from 14 AWG up to 1/0 AWG. Ensure conductors are properly torqued according to the manufacturer specifications printed on the breaker faceplate.
How does the fixed thermal-magnetic trip unit operate on this breaker?
The trip unit features a fixed thermal element for Long-Time (L) overload protection and a fixed magnetic element for Instantaneous (I) short-circuit protection. This provides reliable defense against both gradual overcurrents and sudden faults without requiring manual calibration.
What is the maximum frame capacity for the XT1 series?
The XT1 frame supports a maximum continuous current rating of 125A. This specific model utilizes that compact frame but is factory-calibrated for a 50A trip rating.
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