808-B-4A

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Circuit breakers are an important component of any electrical system. They protect the system from overloads and short circuits, by automatically disconnecting when too much current passes through the breaker. The 808-B-4A is a type of circuit breaker that has been specifically designed for use in fire alarm systems and other similar applications where high current circuits are used. It is designed for reliable operation and has excellent electrical characteristics.

The 808-B-4A circuit breaker is designed to protect low voltage electrical systems from both overloads and short circuits. The breaker utilizes a bimetal element that is sensitive to temperature changes caused by an excessive current draw. When the temperature of the bimetal element reaches a predetermined level, it expands, pushing the operating mechanism of the breaker into the “OFF” position. This interrupts the flow of current and protects the circuit.

The 808-B-4A is a double pole breaker, meaning that it has two separate terminal connections. This allows it to break a single circuit, while protecting both the positive and negative sides of the circuit. This is especially important when it comes to protecting circuits in fire alarm systems, as these often have both positive and negative signals that need to be protected.

The 808-B-4A has many features that make it a desirable choice for fire alarm applications. It has a high interrupting capacity, meaning that it can handle high levels of current without becoming damaged. It also has a relatively low fault current, meaning that it is unlikely to cause a nuisance trip when a minor fault occurs. Finally, it has a good current limitation capability, meaning it will automatically shut down a circuit if the current draw becomes too large.

The 808-B-4A is a reliable and cost-effective choice for protecting circuits in fire alarm and other high current applications. Its ability to protect both the positive and negative sides of the circuit, as well as its high interrupting capacity, make it an ideal choice for protecting circuits in these applications. It is also a reliable breaker, with a low fault current and excellent current limitation capabilities. In addition, the 808-B-4A has a UL rating for safe operation, giving it added protection for use in fire alarm systems.

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