1.APPLICATION

JRS4-d range thermal overload relay is used in AC 50Hz(or 60Hz);rated voltage is up to 660V,for protecting AC motor against overload or phase-breaking.

2.TYPE AND MEANS

structure type

● Bimetal type

● Three phase

● Trip grade:class 10

● Setting current regulator devices

● With ambient temperature compensation

● With phase-breaking protect

● Hand operate and automatic reset

● With release showing

● Auxiliary contacts are one normally open and one normally closed;

● With normally closed contact disconnect button

● With device test button

■ adapt work rule

● 8h working rule

● ongoing work rule

● Intermittent work cycle rule,operation frequency≤12 time/h