TOMZN TOVPD3-VA 3-Phase 4-Pole Adjustable Voltage & Current Protector

TOMZN TOVPD3-VA is a three-phase 4-pole adjustable voltage and current protection device designed to protect electrical systems and connected equipment against abnormal supply conditions. The device is designed for 400V three-phase, four-wire systems and monitors all three phases along with the neutral connection. It provides adjustable over-voltage, under-voltage and over-current protection, automatically disconnecting the connected load when electrical parameters exceed the configured protection limits. Additional protection functions include phase asymmetry and phase-sequence monitoring, helping protect three-phase equipment against incorrect or abnormal phase conditions. Its digital display provides real-time voltage and current monitoring, while adjustable action and reconnection delays help prevent unnecessary switching during temporary supply disturbances. Voltage and current readings can also be manually calibrated, allowing the protector to be matched more accurately with reference measurement equipment. The DIN-rail design makes the TOVPD3-VA suitable for three-phase distribution boards, commercial buildings, workshops, industrial electrical systems and solar AC distribution applications.

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