Except as otherwise provided by the trust instrument, the trustee of an inter vivos or testamentary trust, with the approval of the court having jurisdiction of the trust, may pay income distributable to a beneficiary who is an incapacitated person for whose estate no guardian has been appointed directly to the incapacitated person, or expend and apply it for his care and maintenance or the care, maintenance and education of his dependents.
20 Pa.C.S. § 5535