An unpowered ICM will require a brake to maintain its position if an external torque is applied.
A brake can be used with the ICM motor to keep the actuator from backdriving, typically in vertical applications. A brake may be used for safety reasons or for energy savings allowing the actuator to hold position when unpowered.
NOTE: The optional Spring-Applied / Electronically-Released Brake requires 24V power. It has a input current rating of 0.414 Amps.