SQUARE D QOB215 Miniature Circuit Breaker, 15A, 2 Pole, 120/240VAC, 10KA, Bolt On Mount

Square D QOB215 circuit breaker prevents disruption of data centres, hospital equipment, lighting fixtures and construction equipment by managing electrical loads. This mini circuit breaker has lug type terminals for seamless wire connections.

Working Mechanism:

• Square D QOB215 circuit breaker constantly monitors the flow of electrical current in the circuit it protects.
• It has a built-in sensor that detects the amount of current passing through the circuit.
• This mini circuit breaker operates within a specific current range. If the current exceeds the predetermined threshold due to an overload or short circuit, the circuit breaker gets triggered.
• When the detected current surpasses the threshold, the internal trip mechanism is engaged.
• This mechanism consists of a thermal magnetic strip that heats up due to excessive current flow.
• The mechanical action caused by the thermal magnetic strip forces the circuit breaker's contacts to open.
• This action physically interrupts the flow of current through the circuit.

Frequently Asked Questions:

Q. What is the difference between a circuit breaker and a fuse?

A. Both circuit breakers and fuses serve the same purpose of protecting circuits from overcurrent. However, circuit breakers can be reset after they trip, while fuses need to be replaced. Circuit breakers are more convenient for ongoing use.

Q. How do I select the right circuit breaker rating?

A. A circuit breaker rating should be slightly higher than the maximum expected current of the circuit. Also, consider the load requirements of the connected devices and the wiring capacity when selecting the rating.

Q. What is the current rating of this Square D circuit breaker?

A. It has an amperage rating of 15A. However, if you require a circuit breakr with a higher current raing, check out the brand's QOB250 circuit breaker having an ampere rating of 50A.

Q. Does this Square D QOB215 circuit breaker require maintenance?

A. Although this circuit breaker does not require routine maintenance, it should be tested on a regular basis to ensure proper operation.