产品详细信息：
dvr
■ mcu（ microprocessor control unit ） based
■ dc motor/dc device protection
■ separate setting for over-voltage and undervoltage
■ line voltage indicative function（fnd）
■ digital setting/trip cause indication & troubleshooting
■ auto reset/reset time setting
■ confirm setting value/test function
■ no volt release function（ fail-safe operation）selectable
protective item
trip time
over-voltage
0.5~25 sec
under-voltage
0.5~25 sec
model
dvr
setting range
110vdc
220vdc
over-voltage
ovr
110 - 160v
220 - 320v
under-voltage
uvr
60 - 110v
160 - 240v
trip time
o-time
0.5 - 25 sec
reset time
r-time
0.5 - 25 sec
power supply
voltage
24
24vac/dc
220
85v - 250vac/dc
frequency
50/60hz
reset
manual/electrical/auto
mounting
35mm din-rail/panel