HOA and other similar operators with 8538 Combination Starters - Series K
What type of HOA operator should be used with an 8538S Combination Starter - Series K?
Combination Starter - GIC Product
The series K combination starter uses circular 30mm operators. The 9999SC8 would be correct for this type of starter. Older units used the rectangular switches such as the 9999SC2. These older operators are not compatible with series K combination starters.