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The Siemens Sirius line of 3RT1026-1AP60 contactors are suitable for use wherever a 3 pole, IEC, UL and CSA rated 25 AMP contactor is appropriate. This size S0 contactor is used in applications up to 15 horsepower at 460v for three phase applications. Additional auxiliary contacts, up to four poles, can be added on the top or side of the contactor. In addition to auxiliary contact blocks, thermal magnetic or solid state overload relays can be added to these Siemens contactors to provide full motor starter protection in the case of an over amperage situation.