The ISO Relay is a motor protection device that enables parallel wiring of multiple standard 4-wire AC motors for flexible switch based control.  With one ISO Relay per motor, multiple motors can be safely operated directly from a single line voltage switch or a single motor can be operated from multiple switches without risk of damage to the motor.  Unique design features allow protection of any 90-275VAC motor meaning the same ISO Relay can be used regardless of the motors operating voltage. 

Parallel wiring normally exposes motors to inductive feedback causing erratic movement and potential damage to motors and shading systems.  The isolation provided by the ISO Relay makes this configuration safe and easy.