What are two circuit breaker types found in a building or data center? (Choose two.)

The correct answer is A. Thermal. Thermal (A) and Magnetic (B) are the two standard circuit breaker types found in buildings and data centers. Thermal breakers use a bimetallic strip that bends under prolonged overcurrent heat, tripping the circuit to prevent damage from sustained overloads. Magnetic breakers…

Power Systems in the Data Center

Question

What are two circuit breaker types found in a building or data center? (Choose two.)

Options

AThermal
BMagnetic
CFast-acting
DPhotovoltaic

How the community answered

(38 responses)

A
82% (31)
B
5% (2)
C
11% (4)
D
3% (1)

Explanation

Thermal (A) and Magnetic (B) are the two standard circuit breaker types found in buildings and data centers. Thermal breakers use a bimetallic strip that bends under prolonged overcurrent heat, tripping the circuit to prevent damage from sustained overloads. Magnetic breakers use an electromagnet that reacts almost instantly to sudden, high-magnitude current spikes, making them well-suited for protecting against short circuits.

Fast-acting (C) describes a characteristic of fuses, not a named circuit breaker category, so it does not belong here. Photovoltaic (D) refers to solar cell technology that converts light into electricity and has no relation to circuit protection devices.

Memory tip: Think "T for Temperature, M for Magnet" - thermal breakers respond to heat buildup over time, while magnetic breakers respond to strong magnetic force from a sudden surge.

Topics

#circuit breakers#thermal breaker#magnetic breaker#overcurrent protection

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