Welcome to G-TV.
Today I will be showing you how to install auxiliary contacts to ABB's A Line of contactors.
Auxiliary contacts can either be side or top mounted.
The CA 5 series here is a top mounted auxiliary contact and is available in single normally
open or normally closed configurations, or 4 pole circuits with a combination of normally
open and normally closed circuits.
The single pole contacts can also be ganged for additional contacts.
To install the single pole auxiliary contact such as the CA5-01, line up the gray plastic
tab with one of the openings of the screw terminals on the front face.
Then line up the channel of the auxiliary contact with the stops on the front of the
contactor.
The auxiliary contact should rest flushed against the contactor.
Now, I can simply slide the contact into place.
To remove the auxiliary contact, I will push down the white plastic tab and push up on
the auxiliary contact.
For the 4 pole top mount auxiliary contact, I can line up the channel of the contact with
the four stops on the front face of the contactor.
Then I will position the two plastic tabs into the open face of the outer edge screw
terminals and slide the auxiliary contact down.
I can remove the auxiliary contact by pushing down on the white plastic tab, while sliding
the contact up.
The side mount auxiliary contacts require a visual inspection to find which auxiliary
contact is needed.
Contactors with a model number up to 75 use the CAL 5-11 as model numbers 95 and larger
use a CAL 18-11, CEL 18-1 or CEL 18-10.
Some of the larger models might still use the CAL 5-11 if they were manufactured prior
to 2003.
A quick way to determine which contactor to use is to look at the indentations on the
side of the contactor.
The CAL 5-11 has a locator tab in the middle as the CAL 18-11 has two locator tabs spread
further apart from each other.
The contactors should have indentations as to where the locator tab can be placed.
Comparing an older A 210 to an A 145, I can see the difference from where each auxiliary
contact can be placed based on the indentations.
The CAL 5-11 can be installed three different ways depending on the model number.
Models A or AE 9 through 26 and models UA 16 through 25, do not need this plastic peg
in the upper middle part.
This part can be removed without the use of any special tools.
I can install the auxiliary contact by aligning the plastic hooks with the grooves on the
side of the contactor.
Then I can lift up the auxiliary contact until it snaps into the side of the contactor.
For models A and UA 30 through 110, models AE and AF 45 through 110, and models AF 580
through 750, the mounting port is larger and further from the bottom of the contactor.
The CAL 5-11 will only need the top plastic peg instead of the middle piece.
Once again, this piece can also be removed like the top plastic peg was with the other
models.
Now I can install the auxiliary contact by aligning the plastic hooks with the grooves
on the side of the contactor.
Then I can lift up the auxiliary contact until it snaps into the side of the contactor.
Models A and AF 145 to 300 and AF 400 to 460 have a larger mounting port, but are not as
far from the bottom as the previous model.
To install the auxiliary contact, I will need to remove both plastic pegs.
Then I will take the peg that was in the upper spot and insert it into the middle part of
the contact.
I can then line up the groves on the side of the contactor and snap on the auxiliary
contact.
ABB's auxiliary contacts, along with thousands of other products and services are available
at galco.com.