Sprecher+schuh Definite purpose contactors with AC coil. High performance economical contactors for commercial applications. Ideal for commercial applications including air conditioning, refrigeration, resistive heating and many other installations where a low cost, high performance contactor is needed. These devices offer flexibility and are designed to meet or exceed electrical and mechanical requirements as defined by definite purpose contactor standards. Universal mounting plate. 25 and 30 A have screw power terminals that will accept ring-tongue terminals. 40 A and larger have box power terminals. Dual quick-connect coil terminals on all sizes. Double break power contact design with feed-thru wiring. Class-B coil insulation. Double E-magnet assembly.