1. Toote lõppview
The ABB Tmax XT4NU3250EFF000XXX is a high-performance molded case circuit breaker designed for reliable protection in various electrical systems. This device features a frame size XT4, rated for up to 250A, with voltage ratings of 600V (UL) and 690V (IEC). It incorporates an Ekip LS/I electronic trip unit, providing Long-Time (L), Short-Time (S), and Instantaneous (I) protection functions. This 3-pole circuit breaker is engineered for safety and efficiency in industrial and commercial applications.

An image showing the ABB Tmax XT4NU3250EFF000XXX Molded Case Circuit Breaker. The device is dark gray with a red and white handle, indicating its operational status. Various labels and connection points are visible on its front and sides.
2. Ohutusalane teave
Vigastuste või seadme kahjustuste vältimiseks järgige alati järgmisi ohutusnõudeid:
- Paigaldus-, hooldus- ja remonditöid tohivad teha ainult kvalifitseeritud töötajad.
- Ensure all power sources are disconnected and locked out before working on the circuit breaker or associated circuitry.
- Use appropriate personal protective equipment (PPE) such as insulated gloves, safety glasses, and arc-flash protective clothing.
- Kontrollige õiget voltage ja voolutugevus enne paigaldamist.
- Do not operate the circuit breaker if it appears damaged or malfunctioning.
3. Seadistamine ja installimine
The ABB Tmax XT4NU3250EFF000XXX circuit breaker is designed for DIN Rail Mount installation. Proper installation is crucial for safe and reliable operation.
3.1 Paigalduseelsed kontrollid
- Inspect the circuit breaker for any physical damage.
- Confirm that the product specifications match the system requirements.
- Ensure the mounting surface is clean and secure.
3.2 Paigaldamine
- Securely attach the circuit breaker to a standard DIN rail.
- Ülekuumenemise vältimiseks tagage seadme ümber korralik ventilatsioon.
3.3 Juhtmestik
- Connect the main power supply conductors to the appropriate terminals (Line/Load) as indicated on the device.
- Veenduge, et kõik ühendused oleksid tihedalt ja kindlalt kinnitatud, et vältida lahtisi kontakte ja kaarleeki.
- Follow all local and national electrical codes for wiring practices.
- Verify correct polarity and phase sequence for multi-phase installations.
4. Kasutusjuhised
The ABB Tmax XT4NU3250EFF000XXX circuit breaker is designed for straightforward operation.
4.1 Sisse/välja lülitamine
- To Switch ON: Push the operating handle firmly to the 'ON' position.
- To Switch OFF: Push the operating handle firmly to the 'OFF' position.
4.2 Trip Indication and Reset
- If an overload or short-circuit occurs, the circuit breaker will automatically trip, moving the handle to an intermediate 'TRIPPED' position.
- Lähtestamine: First, move the handle fully to the 'OFF' position. Then, push the handle to the 'ON' position.
- Before resetting, investigate and resolve the cause of the trip. Repeated tripping indicates an underlying electrical issue.
5. Hooldus
Regular maintenance ensures the longevity and reliable operation of your circuit breaker.
5.1 Tavaline kontroll
- Kontrollige kaitselülitit perioodiliselt füüsiliste kahjustuste, värvimuutuse või lahtiste ühenduste suhtes.
- Check for dust accumulation and keep the area around the breaker clean.
5.2 Puhastamine
- Enne puhastamist veenduge, et seade on vooluvõrgust lahti ühendatud.
- Use a dry, lint-free cloth to wipe down the exterior of the circuit breaker. Avoid using solvents or abrasive cleaners.
5.3 Professionaalne hooldus
For internal inspection, testing, or repair, contact qualified ABB service personnel or an authorized service center. Do not attempt to disassemble the circuit breaker yourself.
6. Veaotsing
See osa annab juhiseid levinud probleemide lahendamiseks. Keeruliste probleemide korral konsulteerige kvalifitseeritud elektrikuga.
6.1 Breaker Trips Frequently
- Võimalik põhjus: Ülekoormus.
- Tegevus: Reduce the load on the circuit by unplugging some devices.
- Võimalik põhjus: Lühis.
- Tegevus: Inspect wiring and connected devices for faults. This requires professional attention.
- Võimalik põhjus: Ground fault (if applicable to the specific trip unit configuration).
- Tegevus: Consult a qualified electrician to identify and rectify the ground fault.
6.2 Breaker Will Not Reset
- Võimalik põhjus: Persistent fault (overload or short circuit).
- Tegevus: Ensure the cause of the trip has been resolved. If the fault persists, the breaker will not reset.
- Võimalik põhjus: Internal damage to the breaker.
- Tegevus: If no fault is present and the breaker still won't reset, it may be damaged and require replacement by a qualified professional.
7. Tehnilised andmed
Detailed technical specifications for the ABB Tmax XT4NU3250EFF000XXX Molded Case Circuit Breaker:
| Spetsifikatsioon | Väärtus |
|---|---|
| Kaubamärk | Joonis fig |
| Mudel | XT4NU3250EFF000XXX |
| Praegune reiting | 250 Amps |
| Voltage Rating (UL) | 600V |
| Voltage Rating (IEC) | 690V |
| Reisi tüüp | Ekip LS/I (Electronic, LS/I Protection) |
| Poolakate arv | 3 |
| Kaitselüliti tüüp | LS |
| Paigaldustüüp | DIN-rööpa kinnitus |
| Pakendi mõõtmed | 8.26 x 6.49 x 6.1 tolli |
| Kaal | 5.51 naela |
| Esmakordselt saadaval olev kuupäev | 25. juuni 2018 |
8. Garantii teave
ABB products are manufactured to high standards and typically come with a manufacturer's warranty. For specific warranty terms and conditions applicable to your ABB Tmax XT4NU3250EFF000XXX circuit breaker, please refer to the official documentation provided with your purchase or visit the official ABB webveebisait. Hoidke ostutõendit garantiinõuete esitamiseks.
9. Tugi ja kontaktandmed
For technical assistance, product inquiries, or service requests, please contact ABB customer support. You can find contact information and additional resources on the official ABB websaidile.
ABB Official Websait: Visit the ABB Store on Amazon
Always provide the full model number (XT4NU3250EFF000XXX) when contacting support to ensure accurate assistance.





