How to Change Contacts on The Abb Eh - 80 & eh - 90 series contactors

Welcome To G-TV! Today I will be showing how to change the contacts on the ABB EH 80 and EH 90 series of contactors. I will be using the EH 80 series of contactors for this demonstration since the EH 80 and EH 90 use similar contacts and can be replaced using the same methods. First, I will remove the front cover, which houses the arc chutes. To do this I will use a T20 Torx screw or an SD 20 star bit. I will only need to turn the two screws a little bit and they should pop up as they unlatch from the contactor’s body. I can then take off the front cover and see my contacts within the contactor. The movable contacts are held in place by a metal clamp. To remove the contact, I will push up on one side of the contact. This should free the contact from the clasp and allow me to push the contact out of place. Once I have taken out the movable contact, I can remove my fixed contact by using the torx screwdriver. I will not need to change the size of the bit inside and will keep this at a size 20. I will keep the screws here for my new contacts. Once I have finished removing the fixed contacts, I can then drop my new contacts in and line up the hole on the contact with the screw opening on the contactor. I can start to screw it in by hand and then use my torx screw driver to tighten the contact down. I can then slide in the movable contact by using the lip on the edge to push up on the clasp and then push it towards the clasp. I may need to raise the clasp a little bit with the contact until the clasp latches on. Now that my contacts have been replaced, I can place the arc chute cover back on and use the torx screwdriver to push down on the screw and turn it 90 degrees clockwise so that the bottom of the cover hooks on to the contactor’s base. Replacement kits for the EH series of contactors along with thousands of other products and services are available at Galco.com