Voltage failure detector DZN-1 002470285

Three-phase voltage monitoring – voltage detector DZN-1

The DZN-1 voltage drop detector is a reliable device designed to monitor voltage in three-phase networks. It reacts quickly to irregularities, protecting connected devices and ensuring uninterrupted power supply. It is a key element in systems where voltage stability is critical, e.g., in industry, public buildings or advanced home installations.

Functionality and application

The device is used to control undervoltage in 3-phase AC networks with a rated voltage of 170-190V. Thanks to its single changeover contact, it can be used to signal power supply problems or to automatically switch off receivers in the event of a voltage drop below the permissible level. Installation is done using screw terminals, which simplifies and speeds up installation.

It will find application everywhere where protection against the effects of voltage drop is required, e.g.:

• In workshops and production plants – protection of sensitive machines and equipment.
• In server rooms and data centers – ensuring the continuity of critical systems.
• In residential buildings – protection of RTV and household appliances against damage caused by unstable voltage.
• In automation systems – reliable operation of controllers and other automation devices.

Construction and operating parameters

The DZN-1 detector is characterized by compact dimensions (width 18 mm, height 90 mm, depth 65 mm), which allows for easy integration with existing electrical installations. Its solid construction ensures long-lasting and trouble-free operation even in difficult environmental conditions. The relay is designed to operate in AC networks, and its measurement range has been precisely selected to match the typical voltage values occurring in three-phase installations. Three-phase undervoltage control provides comprehensive protection against voltage drops on each phase.