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ABB XT1NU3040AYD000XXX Molded Case Circuit Breaker
- 40A
- 3 Pole
- Unit Mount
ABB
XT1NU3040AYD000XXX
Molded Case Circuit Breaker
Brand
ABB
SKU
XT1NU3040AYD000XXX
Quantity
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ABB XT1NU3040AYD000XXX - 40A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial power distribution, the ABB XT1NU3040AYD000XXX is a 40A, 3-pole molded case circuit breaker. It provides reliable long-time and instantaneous (LI) protection for demanding electrical systems. This unit mounts into ABB ReliaGear neXT panelboards and serves as a replacement for legacy T1N040TW breakers. Rated at 25kAIC at 480VAC, it features a fixed thermal-magnetic trip unit and includes load side lugs for efficient installation.Specifications
| Brand | ABB |
|---|---|
| Series | XT1 |
| Amperage | 40A |
| 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 |
| Wire Gauge | 10 AWG - 2/0 AWG |
| 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 |
|---|---|
| Accessories | Load Side Lugs (FC CuAl) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, cULus, HACR, IEC, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
5 answersIs the XT1NU3040AYD000XXX compatible with ABB ReliaGear neXT panelboards?
Yes, this unit mount breaker is designed for integration into ABB ReliaGear neXT panelboards. Verify that your specific enclosure has the appropriate mounting hardware and clearances for an XT1 frame.
What wire sizes do the standard lugs on this breaker accept?
The factory-installed lugs accept wire gauges ranging from 10 AWG to 2/0 AWG. Always torque the terminal connections to the specifications printed on the breaker faceplate to prevent overheating.
How does the fixed thermal magnetic trip unit operate on this model?
This breaker features an LI trip function. The fixed thermal element provides Long-Time (L) protection against sustained overloads, while the fixed magnetic element delivers Instantaneous (I) protection against short circuits.
Is this MCCB suitable for direct current (DC) applications?
Yes, it is rated for use in DC systems, offering a 36kA interrupting capacity at 250VDC and 500VDC. Consult ABB technical documentation for the required series wiring of poles when used in 500VDC circuits.
What does the 'N' signify in the XT1NU3040AYD000XXX part number?
In the SACE Tmax XT series nomenclature, the 'N' indicates a Normal interrupting tier. For the XT1 frame size, this translates to a 25kA interrupting rating at 480VAC.
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