The OM-310 power limiter is designed for:

• protecting the consumer in the event of poor electrical network parameters
• completely disconnecting the load if the consumed power exceeds the primary threshold for a user-specified time
• partially disconnecting the load if the consumed power exceeds the secondary threshold for a user-specified time
• measuring and displaying the parameters of a three-phase electrical network (current values of phase and line voltages; voltages of direct, reverse, and zero sequences; current values of phase currents; active, reactive, and total power consumed by the load, and power factor cos φ)
• alerting about emergency situations
• remotely connecting and disconnecting the load via the RS-232 / RS485 interface or an external switch

The device supports operation with loads ranging from 2.5 kW to 30 kW when using built-in current transformers, and up to 350 kW when using external current transformers, including networks with an isolated neutral.

The OM-310 provides the following types of consumer protections:

• in case of poor network voltage quality (unacceptable voltage surges, phase breaks, phase sequence violations, phase interlocking, phase/line voltage imbalances)
• when the maximum set current per phase of the load is exceeded
• for leakage currents to "ground."
• For each type of protection, it is possible to enable or disable automatic load reconnection

Protection of electrical equipment is ensured by controlling the coil of a magnetic starter (contactor).