The SE-601 provides sensitive ground fault protection without the problems associated with nuisance tripping. Applications range from industrial 24Vdc control circuits to 800Vdc automated transportation systems. Features/Benefits: Sensitive 1- to 20-mA trip setting provides a wide range of low-level protection and 50-ms to 2.5-s trip delay allows quick protection; Form A and Form B ground fault alarm contacts; Non-volatile trip memory retains trip state; Analog output for external metering; Selectable fail-safe or non-failsafe operating modes; No calibration required.