Which type of contactor is normally closed?

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Multiple Choice

Which type of contactor is normally closed?

Explanation:
Normally closed means the contact is closed and conducts current when the coil has no power. When you energize the coil, the contact opens and stops the current flow. In these designations, the option that uses the normally closed configuration is the one that remains closed in the de-energized state, so it matches the description requested by the question. The other designations describe contacts that are open when the coil is not powered (or have a mix of states), so they wouldn’t be normally closed.

Normally closed means the contact is closed and conducts current when the coil has no power. When you energize the coil, the contact opens and stops the current flow. In these designations, the option that uses the normally closed configuration is the one that remains closed in the de-energized state, so it matches the description requested by the question. The other designations describe contacts that are open when the coil is not powered (or have a mix of states), so they wouldn’t be normally closed.

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