Features

• 3RB20-series electronic overload relay. Range of variants reduced thanks to large adjustment range Overload protection for three-phase motors On-site RESET is not necessary thanks to the automatic RESET function The 3RB20 cannot be used with DC current or behind frequency inverters Mechanically and electrically compatible with 3RT contactors and 3RW soft starters Internal power supply (no supply voltage required) Rapid triggering ( ; 3 s) for protection against phase failure With auxiliary contacts 1 N/O ; 1 N/C, manual / automatic RESET, switch position indication, TEST function and STOP button Class 10; provides solutions for heavy start-up loads