SIEMENS BQD320 Circuit Breaker Instruction Manual

1. Introducció

This manual provides essential information for the safe and proper installation, operation, and maintenance of the SIEMENS BQD320 circuit breaker. The BQD type circuit breakers feature 1-inch pole configurations and are available in 1, 2, or 3 pole construction. This specific model is a 3-pole breaker. Voltage ratings of 120, 240, 277, and 480Y/277V AC are supported. The BQD breaker is designed for panel board mounting and has a 14KAIC interrupting capacity.

2. Informació de seguretat

ADVERTIMENT: Electrical shock hazard. Installation and servicing of this circuit breaker must be performed by qualified personnel only. Always disconnect power at the main service panel before working on electrical equipment. Failure to follow these instructions can result in serious injury or death.

• Assegureu-vos que es compleixin tots els codis elèctrics locals i nacionals.
• Utilitzar equips de protecció individual (EPI) adequats.
• Verifiqueu el voltage and current ratings match the application.
• No utilitzeu interruptors automàtics danyats o modificats.

3. Característiques del producte

• Tipus: BQD
• Pols: Three pole configuration
• Valoració actual: 20 Amps
• Voltage Valoració: 480Y/277V CA
• Interrupting Capacity: 14KAIC
• Muntatge: Panel board mounting (Bolt-in)
• Certificació: Llistat UL

4. Configuració i instal·lació

The SIEMENS BQD320 is a bolt-in circuit breaker designed for secure installation within compatible panel boards. Professional installation is mandatory to ensure safety and compliance with electrical standards.

1. Desconnexió d'alimentació: Before beginning any installation, ensure that all power to the panel board is completely disconnected and locked out according to safety procedures.
2. Preparació del panell: Identify the appropriate slot in the panel board for the three-pole breaker. Ensure the bus bar connections are clean and free from debris.
3. Col·locació de l'interruptor: Align the circuit breaker with the bus bar connections in the panel. The bolt-in design requires the breaker to be securely fastened to the bus bar.
4. Connexions segures: Use appropriate tools to tighten the bolts, ensuring a firm electrical connection. Refer to the panel board manufacturer's specifications for torque requirements.
5. Connexions de cable: Connect the load wires to the appropriate terminals on the circuit breaker. Ensure all wire insulation is intact and connections are tight.
6. Verificació: Double-check all connections and ensure the breaker is firmly seated and secured.
7. Restauració d'energia: Un cop finalitzada i verificada la instal·lació, restableu l'alimentació a la placa del panell.

Figura 1: Frontal view of the SIEMENS BQD320 circuit breaker, showing the three poles and ON/OFF switch.

Figura 2: lateral view of the SIEMENS BQD320 circuit breaker, illustrating its compact dimensions for panel board integration.

5. Instruccions de funcionament

The SIEMENS BQD320 circuit breaker operates as a protective device for electrical circuits.

• Posició ON: To energize the circuit, push the handle firmly to the 'ON' position.
• Posició OFF: To de-energize the circuit, push the handle firmly to the 'OFF' position.
• Posició DISPARADA: If an overload or short circuit occurs, the breaker will automatically move to a 'TRIPPED' position, typically midway between 'ON' and 'OFF'. This indicates a fault in the circuit.

6. Manteniment

The SIEMENS BQD320 circuit breaker is designed for reliable, maintenance-free operation under normal conditions. However, periodic inspection by qualified personnel is recommended.

• Inspecció visual: Inspeccioneu periòdicament l'interruptor per detectar qualsevol signe de danys físics, decoloració o connexions soltes.
• Neteja: Ensure the area around the breaker is free from dust, dirt, and obstructions to allow for proper heat dissipation.
• No hi ha peces reparables per l'usuari: Do not attempt to open or repair the circuit breaker. Internal components are not user-serviceable.

7. Solució De Problemes

If the circuit breaker trips, follow these steps:

1. Identify Tripped Breaker: Locate the breaker with its handle in the 'TRIPPED' position.
2. Desconnexió de càrrega: Disconnect or turn off all appliances and devices connected to the tripped circuit.
3. Restableix l'interruptor: Firmly push the breaker handle completely to the 'OFF' position, then firmly push it to the 'ON' position.
4. Restore Load: Reconnect or turn on devices one by one to identify if a specific device caused the trip.
5. Persistent Tripping: If the breaker trips immediately after resetting, or trips frequently, there may be a persistent overload, short circuit, or a fault within the electrical system. In such cases, contact a qualified electrician for diagnosis and repair. Do not repeatedly reset a breaker that continues to trip.

8. Especificacions

9. Informació de la garantia

Siemens strongly recommends against the use of "used" breakers. The installation of used breakers in a Siemens panel will void the warranty on the panel. Siemens does not sell used breakers and has not approved any third-party sellers to do so. For specific warranty terms and conditions, please refer to the official Siemens warranty documentation provided with your product or contact Siemens customer service.

10. Suport

For technical assistance, product inquiries, or to report issues, please contact Siemens customer support. Ensure you have your product model number (BQD320) available when contacting support.

Oficial de Siemens Weblloc: www.siemens.com