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ABB XT1NU3045AFD000XXX Molded Case Circuit Breaker
- 45A
- 3 Pole
- Unit Mount
ABB
XT1NU3045AFD000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT1NU3045AFD000XXX
Quantity
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ABB XT1NU3045AFD000XXX - 45A 3 Pole Molded Case Circuit Breaker
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Description
Built to handle demanding commercial loads, the ABB XT1NU3045AFD000XXX is a 45A, 3-pole molded case circuit breaker. It utilizes a fixed thermal-magnetic trip unit to deliver consistent LI protection. The breaker is fully compatible with ABB ReliaGear neXT panelboards, ReliaGear SB switchboards, and SACE Tmax XT enclosures, replacing older T1N045TL units. Delivering a 25kAIC interrupt rating at 480VAC, this HACR-rated device features reverse feed capability and includes load side lugs.Specifications
| Brand | ABB |
|---|---|
| Series | XT1 |
| Amperage | 45A |
| 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 |
| Terminal Type | Lugs |
|---|---|
| For Use With | ABB ReliaGear neXT Panelboards, ReliaGear SB Switchboards, SACE Tmax XT Panelboards |
| 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, Bell Alarm, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| 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, Reverse Feed, Double Insulated |
Product FAQs
6 answersWhich panelboards are compatible with the XT1NU3045AFD000XXX?
This unit mounts directly into ABB ReliaGear neXT Panelboards, ReliaGear SB Switchboards, and SACE Tmax XT Panelboards. It requires the appropriate unit mount hardware kit for installation in these enclosures.
What does the N designation indicate in the XT1NU3045AFD000XXX catalog number?
The N indicates the Normal interrupting capacity tier for the SACE Tmax XT1 frame. For this specific frame size, the Normal tier provides a 25kA short circuit rating at 480VAC.
What are the acceptable wire sizes for the factory-installed lugs?
The standard lugs accept wire gauges from 10 AWG up to 2/0 AWG. They are rated for use with both copper (Cu) and aluminum (Al) conductors.
Is the trip unit on this 45A breaker adjustable?
No. This model features a fixed thermal and fixed magnetic trip unit. Both the long-time (L) overload and instantaneous (I) short-circuit protection settings are factory set and cannot be adjusted in the field.
Can the XT1NU3045AFD000XXX be utilized in DC circuits?
Yes, it is rated for DC applications up to 500VDC. When installing in DC systems, you must route the conductors through multiple poles in series according to ABB wiring guidelines to safely achieve the full voltage rating.
Does this breaker provide ground fault protection?
No. The LI trip function code indicates it provides Long-Time and Instantaneous protection only. It does not include integral equipment ground fault (G) protection.
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