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Contactor ofr

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Cdoobie

Member
Location
Jacksonville Florida
Occupation
Low Voltage Tech
hi there, I’m not very familiar with types of contractors. I’m trying to figure out if I need a DP or a Lighting Contactor ln order to control power to a low voltage landscape lighting transformer.
attached is a picture of the spec plate.
thanks in advance.
 
J

jusme123

Senior Member
Location
NY
Occupation
JW
Jraef

Jraef

Moderator, OTD
Staff member
Location
San Francisco Bay Area, CA, USA
Occupation
Electrical Engineer
There is no legal field use for DP contactors other than as direct replacement of exact units in listed factory assemblies. That doesn’t stop a lot of people from using them in the field because they are cheap, but technically it is a code violation. 110.3, suitable for the intended use. The intended use of DP contactors involves being engineered into a factory assembly that will be listed by an NRTL. If you look, all DP contactors are UL Recognized components (backward UR symbol), which is not the same as being UL listed. UR means it MUST be part of something else that itself will be listed.
 
ATSman

ATSman

ATSman
Location
San Francisco Bay Area
Occupation
Electrical Engineer/ Electrical Testing & Controls
FYI
I found this MH thread from 2012

Definite purpose contactor

Ok sorry for the dumb question. I have a 30 amp, 4 pole definite purpose contactor. Square D. Are these rated for 30amps across each contact, or 30 amps totaled across all 4 poles? Thanks in advance
forums.mikeholt.com
 
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