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ABB XT1NU3030AFD000XXX Molded Case Circuit Breaker
- 30A
- 3 Pole
- Unit Mount
ABB
XT1NU3030AFD000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT1NU3030AFD000XXX
Quantity
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ABB XT1NU3030AFD000XXX - 30A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial applications, the ABB XT1NU3030AFD000XXX provides robust overcurrent protection within the SACE Tmax XT family. This 30A, 3-pole breaker features a fixed thermal-magnetic trip unit (LI) for reliable performance. It installs into ABB ReliaGear neXT panelboards, ReliaGear SB switchboards, and Tmax XT enclosures. As an exact replacement for the legacy T1N030TW, it simplifies facility upgrades.Specifications
| Brand | ABB |
|---|---|
| Series | XT1 |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 50kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600Y/347VAC, 35kA @ 250VDC, 35kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | ABB ReliaGear neXT Panelboards, ReliaGear SB Switchboards, Tmax XT Enclosures |
| Wire Gauge | 10 AWG - 2/0 AWG (Cu/Al) |
| Max Wire | 2/0 AWG |
| Min Wire | 10 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, Padlock Attachment, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, HACR, IEC, UL, cULus |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Double Insulated, Reverse Feed |
Product FAQs
9 answersWhat legacy ABB circuit breaker does the XT1NU3030AFD000XXX replace?
This Tmax XT1 series breaker serves as a direct, drop-in replacement for the legacy ABB T1N030TW molded case circuit breaker, streamlining facility and panelboard upgrades.
Is the XT1NU3030AFD000XXX reverse-feed capable?
Yes, this XT1 molded case circuit breaker supports reverse feeding. Power can be safely supplied from the bottom terminals up to the maximum voltage rating of the breaker.
Does this breaker require a separate mounting base for ReliaGear panelboards?
No, this unit-mount breaker is designed for direct integration into ABB ReliaGear neXT panelboards, ReliaGear SB switchboards, and Tmax XT enclosures without the need for a separate plug-in or draw-out mounting base.
Are the thermal and magnetic trip thresholds adjustable on the XT1NU3030AFD000XXX?
No, this specific XT1 model features a Thermal Magnetic Fixed (TMF) trip unit. Both the long-time overload and instantaneous short-circuit protection settings are factory-set and cannot be adjusted in the field.
Can this 3-pole breaker be used in single-phase distribution systems?
Yes, ABB XT1 three-pole circuit breakers are UL listed for single-phase applications up to 347VAC.
What are the safe ambient operating temperature limits for this Tmax XT1 breaker?
This breaker operates safely in ambient air temperatures ranging from -25 degrees Celsius to 70 degrees Celsius. Note that the reference calibration temperature for the thermal trip unit is 40 degrees Celsius, so derating calculations may be required outside this baseline.
Do I need to purchase terminal lugs separately for this model?
No, the XT1NU3030AFD000XXX ships with factory-installed front terminal lugs. These lugs are dual-rated for aluminum and copper conductors, allowing immediate termination upon unit mounting.
Is this 30A breaker suitable for continuous operation at 100 percent of its rating?
Yes, fixed XT1 breakers up to 100A are UL-rated for 100 percent continuous operation when installed with 90 degree Celsius rated wire. Note that the conductor size must still be selected based on the 75 degree Celsius ampacity column.
What do the letters N and U signify in the XT1NU part prefix?
In the ABB Tmax XT nomenclature, the N indicates a Normal interrupting capacity frame, while the U designates that the breaker is tested and certified to UL and CSA standards for North American applications.
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