Response to Hello Susanne.  The Century Motors 1.5 HP Up Rate Motor model B2854 is a compatible replacement for the Pentair 355023S.  The preferred method for electrical connection is 'Hard Wired".  However, a "Plug-In" electrical connection is acceptable if it complies with all state and local electrical requirements.  The Century Motor model B2854 is rated for 230/115V.  A "plug In" style electrical connection typifies a 115V connection.  Please be certain to wire the new motor to the correct voltage.  The electrical wires can be removed from the current motor and connected to the new motor's terminal block.  Installation Guidelines

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