Uvod
This instruction manual provides essential information for the safe and effective installation, operation, and maintenance of the Legrand Magnetothermic DPX3 160 Circuit Breaker. This device is designed to protect electrical circuits from overcurrents, which can result from overload or short circuit. Please read this manual thoroughly before installation or use.
The Legrand DPX3 160 is a 3-pole circuit breaker with a rated current of 25A and a breaking capacity of 25kA at 400V~. It features an automatic magnetothermal molded case and is designed for DIN rail mounting.
Važne informacije o sigurnosti
- Potrebna profesionalna instalacija: Installation, maintenance, and repair of this electrical device must be performed by qualified and licensed electricians in accordance with all national and local electrical codes and regulations.
- Isključite napajanje: Always disconnect power at the main service panel before installing, servicing, or removing the circuit breaker. Failure to do so can result in severe injury or death.
- Koristite ispravne alate: Use only insulated tools when working with electrical components.
- Uslovi okoline: Ensure the installation environment is dry and free from corrosive gases or excessive dust.
- Ne mijenjaj: Never attempt to modify the circuit breaker. Any unauthorized modifications will void the warranty and may compromise safety.
Product Overview
The Legrand DPX3 160 is a compact and robust magnetothermic circuit breaker. Key features include its 3-pole configuration, adjustable thermal protection, and high breaking capacity.

Slika 1: Legrand DPX3 160 Magnetothermic Circuit Breaker. This image shows the front view of the 3-pole circuit breaker, highlighting the main toggle switch, the adjustable thermal setting dial, and the product labeling with electrical specifications.
Ključne komponente:
- Prekidač: Main switch for turning the circuit breaker ON (green 'O' visible) or OFF (red 'I' visible). Also indicates tripped status (mid-position).
- Priključci terminala: Located at the top and bottom for connecting electrical wires.
- Thermal Adjustment Dial: Allows adjustment of the thermal trip threshold (e.g., 0.8 to 1 In).
- Oznaka proizvoda: Displays model number, electrical ratings, and compliance standards (e.g., DPX3 160, In=25A, 4 200 41, CE, IEC/EN 60947-2).
Specifikacije
| Feature | Vrijednost |
|---|---|
| Brand | Legrand |
| Broj modela | 420041 (DPX3 160) |
| Tip | Magnetothermic Molded Case Circuit Breaker |
| Poljaci | 3-pola |
| Nazivna struja (In) | 25A |
| Breaking Capacity (Icu) at 400V~ | 25 kA |
| Thermal Adjustment Range | 0.8 do 1 in |
| Voltage Rating (Ue) | 220/240V, 380/415V, 440V, 480/500V, 690V (as per device label) |
| Frekvencija | 50-60 Hz |
| Vrsta montaže | Montaža na DIN šinu |
| Dimenzije proizvoda | 3.98 x 0.87 x 3.5 inča |
| Težina artikla | 2.51 funte |
| Standardi | IEC/EN 60947-2, GB 14048.2 |
Napomena: Specifikacije se mogu promijeniti bez prethodne najave. Za najtačnije informacije pogledajte etiketu proizvoda.
Postavljanje i instalacija
UPOZORENJE: Ensure all power is disconnected before proceeding with installation. Only qualified personnel should perform this procedure.
- Prepare the Panel: Ensure the electrical panel or enclosure is de-energized and safe to work on. Verify with a voltage tester.
- Montaža: The DPX3 160 is designed for DIN rail mounting. Securely attach the circuit breaker to the DIN rail in the designated position within the electrical panel.
- Ožičenje:
- Connect the incoming power supply conductors to the upper terminals of the circuit breaker.
- Connect the outgoing load conductors to the lower terminals of the circuit breaker.
- Ensure all connections are tight and secure to prevent loose contacts, which can cause overheating or arcing. Refer to local codes for appropriate wire gauges and torque specifications.
- Thermal Adjustment: If applicable, adjust the thermal trip setting (Ir) using the dial on the front of the breaker to match the specific requirements of the protected circuit. The range is typically 0.8 to 1 times the rated current (In).
- Provjerite instalaciju: Double-check all wiring and connections for correctness and security. Ensure no bare wires are exposed.
- Vrati snagu: Once installation is complete and verified, carefully restore power to the main service panel.
Uputstvo za upotrebu
- Uključivanje: Push the toggle switch firmly upwards until the green 'O' indicator is visible. This indicates the circuit is closed and power is flowing.
- Isključivanje: Push the toggle switch firmly downwards until the red 'I' indicator is visible. This indicates the circuit is open and power is disconnected.
- Aktivirano stanje: If an overload or short circuit occurs, the circuit breaker will automatically trip. The toggle switch will move to a central, intermediate position.
- Resetiranje isključenog prekidača:
- First, turn the breaker completely OFF (downwards) to reset the internal mechanism.
- Investigate and resolve the cause of the trip (e.g., unplug overloaded devices, fix short circuits).
- Once the issue is resolved, turn the breaker ON (upwards). If it trips again immediately, do not force it; consult a qualified electrician.
Održavanje
The Legrand DPX3 160 circuit breaker is designed for minimal maintenance. However, periodic inspection by a qualified electrician is recommended.
- Vizuelni pregled: Povremeno provjeravajte prekidač da li ima znakova fizičkih oštećenja, promjene boje ili labavih spojeva.
- čišćenje: If necessary, gently clean the exterior of the circuit breaker with a dry, lint-free cloth. Do not use liquids or abrasive cleaners. Ensure power is off before cleaning.
- Nema dijelova koje može servisirati korisnik: This device contains no user-serviceable parts. Do not attempt to open or repair the circuit breaker.
- Profesionalna provjera: If the circuit breaker frequently trips without an apparent cause, or if it shows signs of damage, have it inspected and replaced by a qualified electrician.
Rješavanje problema
| Problem | Mogući uzrok | Rješenje |
|---|---|---|
| Osigurači strujnog kruga se često isključuju. | Preopterećenje strujnog kruga, kratki spoj, kvar uzemljenja ili neispravan uređaj. | Smanjite opterećenje strujnog kruga. Isključite uređaje iz struje. Pregledajte ožičenje da li ima oštećenja. Ako problem i dalje postoji, obratite se kvalificiranom električaru. |
| Prekidač se ne resetuje. | Persistent fault on the circuit, internal breaker fault. | Ensure the toggle is pushed fully to the OFF position before attempting to reset. If it still won't reset, do not force it. Call a qualified electrician. |
| Prekidač je vruć na dodir. | Preopterećenje, labava veza ili unutrašnji kvar. | Immediately disconnect power to the circuit. Do not touch the breaker. Contact a qualified electrician for inspection and repair. |
For any issues not covered here, or if you are unsure about any electrical procedure, always consult a qualified and licensed electrician.
Garancija i podrška
Legrand products are manufactured to high standards and are typically covered by a manufacturer's warranty against defects in materials and workmanship. The specific terms and duration of the warranty may vary by region and product.
For detailed warranty information, technical support, or service inquiries, please refer to the official Legrand website or contact their customer service department directly. Keep your purchase receipt and product model number (420041) handy when contacting support.
Legrand Official Webstranica: www.legrand.us (ili relevantne regionalne websajt)





