Microprocessor phase loss and asymmetry sensor CZF-BS-TRMS

Phase failure and asymmetry sensor – reliable protection for your installation

This microprocessor-based phase sensor, catalog number CZF-BS-TRMS, is a key device for protecting electric motors and other receivers sensitive to voltage fluctuations. It provides effective protection against the effects of phase failure or voltage asymmetry, which can lead to serious damage and downtime. The device is designed for DIN rail mounting and is characterized by compact dimensions – 90 mm high and 65 mm deep.

Functionality and application

CZF-BS-TRMS monitors the voltage in a single-phase network in the range of 140 to 270 V, reacting to phase failure and voltage asymmetry. A fixed asymmetry threshold ensures a quick and precise response in case of irregularities. This allows the installer to be sure that the connected devices are protected against potential failures caused by power supply problems. The device does not require an external power source, which simplifies installation and reduces installation costs. Its construction based on screw connections guarantees solid and durable electrical connections.

Key features and benefits

• Phase failure detection: immediate reaction to the lack of voltage in one of the phases, preventing engine damage.
• Phase asymmetry control: protection against uneven phase loading, which can lead to overheating and device failure.
• True RMS: measurement of the effective voltage value, ensuring accuracy even in the presence of harmonic disturbances.
• DIN rail mounting: quick and easy mounting in the switchgear cabinet, saving time and installation costs.
• No external power supply required: simplified installation and lower operating costs.
• One changeover contact: allows easy connection to control circuits or alarm signaling.
• Time delay on power failure: adjustable time delay (4 seconds) eliminates the risk of false alarms caused by short-term power disturbances.

The device is ideal for both professional installers and end-users looking for reliable protection of their electrical equipment. Using the CZF-BS-TRMS sensor is an investment in the safety and long-term efficiency of the electrical installation.