Features 1、This voltafe protector has the function of overvoltage adjustable protection, undervoltage adjustable protection, overcurrent adjustable protection. 2、The voltage protector relay also has asymmetric protection, protection phase sequence, automatic time adjustable recovery function. 3、The model of the protector is MR FVA, rated voltage is AC220V, raeted woring current is 63A, rated voltage is 50/60Hz. 4、This protector uses three phase four wire wiring, you must be connected to the N line, doesn't support three phase three wire wiring. 5、With LED intelligent displays, you can observe the value clearly from it, this over voltage protector has a wide range of application. Specification Item Type: Voltage Protector Material: PC Flame Retardant Material Model: MR-FVA Rated Frequency: 50/60Hz Rated Working Current: 63A Protection Value: AC140V to AC370V Package List 1 x Voltage Protector 1 x User Manual