contactor: meaning, definition, pronunciation and examples
C1/C2Technical/Formal. Predominantly used in electrical engineering, industrial automation, maintenance, and related technical fields. Very rare in general everyday conversation.
Quick answer
What does “contactor” mean?
An electrical device (electromechanical switch) designed to repeatedly make or break an electrical power circuit, typically used to control high-power loads like motors.
Audio
Pronunciation
Definition
Meaning and Definition
An electrical device (electromechanical switch) designed to repeatedly make or break an electrical power circuit, typically used to control high-power loads like motors.
1. In engineering/industry: the standard term for a type of relay capable of handling high current. 2. More generally: a person or organization that makes contact, especially in business (e.g., for networking), though this is a rarer and more informal usage derived from the verb 'contact'.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or application. Spelling remains the same.
Connotations
Identical technical connotations in both varieties.
Frequency
Equally low frequency in general language, but standard and common within the identical technical domains in both the UK and US.
Grammar
How to Use “contactor” in a Sentence
The [NOUN] is controlled by a contactor.Wire the [MOTOR/LOAD] through the contactor.The contactor [VERB: engages/disengages/actuates] the circuit.Vocabulary
Collocations
Examples
Examples of “contactor” in a Sentence
verb
British English
- [Not applicable as a verb]
American English
- [Not applicable as a verb]
adverb
British English
- [Not applicable as an adverb]
American English
- [Not applicable as an adverb]
adjective
British English
- [Not applicable as an adjective]
American English
- [Not applicable as an adjective]
Usage
Meaning in Context
Business
Virtually unused, except in procurement, technical sales, or specifications for industrial equipment.
Academic
Used in textbooks, papers, and lectures within electrical engineering, mechatronics, and industrial automation courses.
Everyday
Extremely rare. Would only be used by someone describing a technical fault (e.g., 'The fridge compressor's contactor is clicking').
Technical
The primary domain. Standard term in schematics, maintenance manuals, panel building, and control system design.
Vocabulary
Synonyms of “contactor”
Strong
Neutral
Weak
Vocabulary
Antonyms of “contactor”
Watch out
Common Mistakes When Using “contactor”
- Using 'contactor' to mean a person (e.g., 'He's a good contactor in the industry').
- Confusing it with 'contractor' (a builder or service provider) due to similar spelling and pronunciation.
FAQ
Frequently Asked Questions
They operate on the same electromechanical principle, but a contactor is designed specifically for high-current, high-power applications (like motors or heating elements), while a relay is typically for lower-power control signals.
No. This is a logical but non-standard and confusing usage. The word is overwhelmingly a technical term for an electrical component. Use 'contact', 'liaison', or 'networker' instead.
In technical contexts, common causes include worn or pitted contacts from arcing, a burnt-out coil due to voltage issues, or mechanical failure from dirt/debris or physical damage.
Yes. A contactor is a control device used to regularly switch a circuit on and off. A circuit breaker is a protective device designed to automatically disconnect a circuit only in the event of an overload or short-circuit to prevent damage.
An electrical device (electromechanical switch) designed to repeatedly make or break an electrical power circuit, typically used to control high-power loads like motors.
Contactor is usually technical/formal. predominantly used in electrical engineering, industrial automation, maintenance, and related technical fields. very rare in general everyday conversation. in register.
Contactor: in British English it is pronounced /kənˈtaktə/, and in American English it is pronounced /ˈkɑːnˌtæktər/ or /kənˈtæktər/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No established idioms for this technical term]”
Learning
Memory Aids
Mnemonic
Think: 'CONTACT maker' or 'breaker'. A CONTACT-or makes or breaks electrical CONTACT, automatically.
Conceptual Metaphor
[Not strongly metaphorical. Understood as an automated agent performing the action of 'contacting' (connecting) two sides of a circuit.]
Practice
Quiz
In which context is the word 'contactor' MOST appropriately used?