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SPD / MCB

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What is Surge Protective Device?

Surge protective device (SPD) is a protection device designed to prevent various electronic equipment, instruments, and communication lines from being subjected to surge shocks (such as lightning strikes).

Surges happen when lightning strikes power lines or during sudden connection or disconnection of power lines at the electric supply network.

They’re way too fast and furious to trigger a fuse or an MCB, so be protected with a surge protection device when a surge strikes.
When the electrical circuit or communication line suddenly generates a peak current or voltage due to external interference, the lightning surge protection devices (SPDs) can conduct and shun the current in a very short period of time, thereby avoiding the damage of the surge to other equipment in the circuit.

What is Surge Protective Device?

Surge protective device (SPD) is a protection device designed to prevent various electronic equipment, instruments, and communication lines from being subjected to surge shocks (such as lightning strikes). Surges happen when lightning strikes power lines or during sudden connection or disconnection of power lines at the electric supply network. They’re way too fast and furious to trigger a fuse or an MCB, so be protected with a surge protection device when a surge strikes. When the electrical circuit or communication line suddenly generates a peak current or voltage due to external interference, the lightning surge protection devices (SPDs) can conduct and shun the current in a very short period of time, thereby avoiding the damage of the surge to other equipment in the circuit.
Surge protectors protect electrical equipment from power surges, by absorbing or redirecting the power surge to earth before it reaches the protected equipment. The surge protection devices mainly prevent the sudden high voltage in the circuit. When the sudden high voltage appears, the surge protector behaves as a short circuit and releases the excessive voltage to the ground, thus protecting the electrical equipment. Surge protective devices protect your electrical appliances from voltage spikes. SPDs aren’t mandated by state or community regulations but are highly recommended.

Does a SPD need a dedicated MCB?

In certain surge protector applications, a stand-alone circuit breaker is needed to ensure a safe and reliable system. A stand-alone breaker is one that is not part of the load center. Quality circuit breakers work well with surge protectors and provide an extra measure of safety and convenience