H4603 Power Relay To 15 HP   See larger image and other views  Your Price:** $151.00 Description Use the Power Relay with the H4598 ECOGATE® System if the dustcollector is bigger than 2 HP at 230V. See similar items in: > Home > Dust Collection Accessories > Miscellaneous Dust Collection Access. Final prices will include state sales tax for items shipped to WA, MO, or PA. Shipping charges for items not shipped via truck freight will be added according to our shipping rates.