We have a office building with a six pole GE contactor with timer and bypass keyed switch, for lighting ,timer comes on contactor close, customer does not like the little buzzing, I'm gonna switch the contactor to NC during the day when timer comes on contactor opens after hr, I'm thinking how would the bypass switch work,
Buzzing contactor
- Thread starter SAP
- Start date
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texie
Senior Member
- Location
- Fort Collins, Colorado
- Occupation
- Electrician, Contractor, Inspector
Luketrician
Senior Member
- Location
- West Pawtucket
i wonder if this contactor just needs to be cleaned? Check out the aramture and shading coil too, be sure they are in place and free from dirt/debris.
rlundsrud
Senior Member
- Location
- chicago, il, USA
I agree with Texie, a mechanically held contactor is a better design. It will last longer and there won't be any buzzing.
Sierrasparky
Senior Member
- Location
- USA
- Occupation
- Electrician ,contractor
Buzzing contactor points me to dirty components or not properly installed coils.
Check out the aramture and shading coil many times it is metal shavings from drilling in the panel to secure the components.
Check out the aramture and shading coil many times it is metal shavings from drilling in the panel to secure the components.
- Location
- Massachusetts
Another vote for mechanically held, it is the correct choice for lighting loads.
Yeah you might be able to make the one you have quiet but it will start buzzing again.
Wonder if this is why we've had 2 of these fail in the past 2 months? We are using square d up to 12 contacts per box, electrically held. 277v coils.
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