Description

Swan-Electric/Suntree 6A DC Circuit Breaker 2Pole

6A DC Circuit Breaker Specification Sheets:

Swan-Electric/Suntree 6A DC Circuit Breaker:

Swan-Electric/Suntree – 6A 2P DC Breakers – Data Sheet

 

What is a DC Circuit Breaker?

• A DC circuit breaker is an electrical breaker that interrupts electricity flow.
• This helps prevent fires or damage to other devices using the same power supply.
• DC breakers are essential for any application requiring protection against the direct current.
• They serve to stop that current in case of an outage or other emergency situation.

Applications of DC Circuit Breakers

• A typical circuit breaker design consists of two main contacts and a set of breaking or arcing contacts.
• When the main contacts separate, there are various methods for extinguishing the arc depending on the circuit breaker’s design and the type of insulating or dielectric medium used.
• Usually, this involves cooling down the arc and recombination of ionized air molecules back into their original states.

How do I choose a DC circuit breaker?

Identify the system voltage:

• Determine the operating voltage of your DC system. Common DC voltages include 12V, 24V, 48V, 110V, 220V, and higher, especially in industrial and renewable energy applications.

Determine the application type:

• Consider whether the breaker is for residential, commercial, industrial, or renewable energy applications (such as solar PV systems).

Determine the Current Rating

Calculate the full-load current

• Add up the total current draw of all the devices connected to the circuit.
• This will give you the full-load current.

Select a breaker rating:

• Choose a breaker with a current rating that is 125% to 150% of the full-load current.
• This provides a safety margin and helps prevent nuisance tripping.

Interrupting Capacity

Check the interrupting rating:

• Ensure the circuit breaker can safely interrupt the maximum fault current that could occur in your system.
• The interrupting capacity should be higher than the maximum short-circuit current of the system.

Trip Curve and Characteristics

Ambient temperature:

• Consider the operating environment.
• High temperatures can affect the performance of circuit breakers.
• Choose a breaker that can operate reliably within the temperature range of the application.

Enclosure and mounting:

• Decide on the type of enclosure (e.g., NEMA or IP rating) if the breaker will be used in a harsh environment.
• Also, consider the mounting type (panel mount, DIN rail, etc.).

DC-specific characteristics

• Make sure the breaker is specifically rated for DC applications, as AC and DC circuit breakers have different arc-extinguishing mechanisms.