Based on this product's specifications, here are some alternatives and similar models
F&F CZF-310-TRMS Microprocessor Phase Loss and Asymmetry Monitor for DIN Rail
Summary description:
The F&F CZF-310-TRMS is a microprocessor-based phase loss and asymmetry monitor designed for three-phase electrical systems. Featuring True RMS measurement, it ensures precise detection of voltage irregularities. It is intended for DIN rail mounting, providing reliable protection for industrial and residential equipment against phase failure or voltage imbalance, thereby preventing potential damage to connected electrical devices.