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ABB XT1SU3045AFF000XXX Molded Case Circuit Breaker
- 45A
- 3 Pole
- Unit Mount
ABB
XT1SU3045AFF000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT1SU3045AFF000XXX
Quantity
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ABB XT1SU3045AFF000XXX - 45A 3 Pole Molded Case Circuit Breaker
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Description
Part of the SACE Tmax XT family, this 45-amp molded case circuit breaker provides robust LI protection for commercial and industrial environments. It installs into ABB Tmax XT panelboards, switchboards, and enclosures, serving as a modern replacement for legacy Tmax T1 series components. Rated for 35kA interrupting capacity at 480VAC, the unit features a current-limiting design, reverse feed capability, and double insulation for enhanced operational safety.Specifications
| Brand | ABB |
|---|---|
| Series | XT1 |
| Amperage | 45A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 22kA @ 600Y/347VAC, 42kA @ 250VDC |
| Frame Type | XT1 |
|---|---|
| Terminal Type | Lugs |
| For Use With | ABB SACE Tmax XT Panelboards, Switchboards, Enclosures |
| 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 |
|---|---|
| Accessories | Lugs Not Included, Mounting Hardware, Phase Barriers |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed, Trip-Free Mechanism, Double Insulated |
Product FAQs
10 answersWhich panelboards and enclosures are compatible with the XT1SU3045AFF000XXX?
This breaker is designed for use in ABB SACE Tmax XT panelboards, switchboards, and compatible industrial enclosures.
What type of terminal connections are standard on this Tmax XT1 breaker?
This unit features standard front lugs for bolt-on cable connections. The FF in the catalog number indicates front terminals for both the line and load sides.
Are the trip settings adjustable on this 45A breaker?
No. This model uses a fixed thermal-magnetic trip unit. Both the long-time (thermal) and instantaneous (magnetic) trip thresholds are factory set and cannot be adjusted in the field.
Can the XT1SU3045AFF000XXX be used in direct current (DC) systems?
Yes, this breaker is rated for DC applications. It provides an interrupting capacity of 42kA at 250VDC. When applying it at 500VDC, multiple poles must be wired in series according to ABB installation guidelines.
Does this breaker plug onto a busbar or bolt into place?
This is a unit mount, bolt-on circuit breaker. It must be mechanically fastened to the panel chassis or mounting plate rather than snapping or plugging onto a busbar.
Is it safe to reverse feed the XT1SU3045AFF000XXX?
Yes. ABB SACE Tmax XT1 thermal-magnetic circuit breakers do not have line and load restrictions. Power can be supplied from the bottom terminals up to the maximum voltage rating.
Does the XT1SU3045AFF000XXX replace older Tmax T1 breakers?
Yes, the SACE Tmax XT1 frame is the direct upgrade and replacement for legacy ABB Tmax T1 series circuit breakers.
What wire sizes are accepted by the standard lugs on this breaker?
The standard front lugs on the XT1 frame typically accept 10 AWG to 2/0 AWG copper or aluminum wire.
What does the S in the XT1SU3045AFF000XXX catalog number indicate?
The S designates the interrupting capacity tier. For the XT1 frame under UL standards, the S tier provides a 35kAIC rating at 480VAC.
Is this breaker HACR rated?
Yes, ABB Tmax XT molded case circuit breakers are HACR rated, making them suitable for heating, air conditioning, and refrigeration applications.
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