Indledning
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.
Vigtige sikkerhedsoplysninger
- Professionel installation påkrævet: 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.
- Afbryd strømmen: 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.
- Brug de rigtige værktøjer: Use only insulated tools when working with electrical components.
- Miljøforhold: Ensure the installation environment is dry and free from corrosive gases or excessive dust.
- Rediger ikke: Never attempt to modify the circuit breaker. Any unauthorized modifications will void the warranty and may compromise safety.
Produkt 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.

Figur 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.
Nøglekomponenter:
- Vippekontakt: Main switch for turning the circuit breaker ON (green 'O' visible) or OFF (red 'I' visible). Also indicates tripped status (mid-position).
- Terminalforbindelser: 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).
- Produktetiket: Displays model number, electrical ratings, and compliance standards (e.g., DPX3 160, In=25A, 4 200 41, CE, IEC/EN 60947-2).
Specifikationer
| Feature | Værdi |
|---|---|
| Mærke | Legrand |
| Modelnummer | 420041 (DPX3 160) |
| Type | Magnetothermic Molded Case Circuit Breaker |
| polakker | 3-Pole |
| Nominel strøm (ind) | 25A |
| Breaking Capacity (Icu) at 400V~ | 25 kA |
| Thermal Adjustment Range | 0.8 til 1 tommer |
| Voltage Rating (Ue) | 220/240V, 380/415V, 440V, 480/500V, 690V (as per device label) |
| Frekvens | 50-60 Hz |
| Monteringstype | DIN-skinneophæng |
| Produktdimensioner | 3.98 x 0.87 x 3.5 tommer |
| Varens vægt | 2.51 pund |
| Standarder | IEC/EN 60947-2, GB 14048.2 |
Bemærk: Specifikationerne kan ændres uden varsel. Se produktetiketten for de mest nøjagtige oplysninger.
Opsætning og installation
ADVARSEL: Ensure all power is disconnected before proceeding with installation. Only qualified personnel should perform this procedure.
- Forbered panelet: Ensure the electrical panel or enclosure is de-energized and safe to work on. Verify with a voltage tester.
- Montering: 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.
- Ledningsforbindelser:
- 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).
- Bekræft installationen: Double-check all wiring and connections for correctness and security. Ensure no bare wires are exposed.
- Gendan strøm: Once installation is complete and verified, carefully restore power to the main service panel.
Betjeningsvejledning
- Tænder: Push the toggle switch firmly upwards until the green 'O' indicator is visible. This indicates the circuit is closed and power is flowing.
- Slukker: Push the toggle switch firmly downwards until the red 'I' indicator is visible. This indicates the circuit is open and power is disconnected.
- Udløst tilstand: If an overload or short circuit occurs, the circuit breaker will automatically trip. The toggle switch will move to a central, intermediate position.
- Nulstilling af en udløst afbryder:
- 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.
Opretholdelse
The Legrand DPX3 160 circuit breaker is designed for minimal maintenance. However, periodic inspection by a qualified electrician is recommended.
- Visuel inspektion: Undersøg regelmæssigt afbryderen for tegn på fysisk skade, misfarvning eller løse forbindelser.
- Rensning: 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.
- Ingen dele, der kan serviceres af brugeren: This device contains no user-serviceable parts. Do not attempt to open or repair the circuit breaker.
- Professionelt tjek: 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.
Fejlfinding
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Afbryderen udløses ofte. | Overbelastet kredsløb, kortslutning, jordfejl eller defekt apparat. | Reduce load on the circuit. Unplug appliances. Inspect wiring for damage. If problem persists, consult a qualified electrician. |
| Afbryderen nulstilles ikke. | 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. |
| Afbryderen føles varm at røre ved. | Overbelastning, løs forbindelse eller intern fejl. | 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.
Garanti og support
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-embedsmand Webwebsted: www.legrand.us (eller relevant regionalt webwebsted)





