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JR28 Series Thermal Relay
1.Application
JR28 series thermal relay is suitable for using in the circuit rated voltage up to 660V, ratedcurrent 93A AC 50/ 60Hz, for over-current protection of AC motor. The relay has the differentialmechanism and temperature compensation and can plug in CJX2 series AC contactor. Theproduct conforms to IEC60947-4-1 stardand.

2. Motion Characteristic: Three-phase Balance Motion Time
No Times of the setting current Motion time Start condition Ambient temperature
1 1.05 >2h Cold state 205oC
2 1.2 <2h Heat state(Following the No.1 test)
3 1.5 <4min
4 7.2 10A 2s< Tp10s 63A Cold state
10 4s< Tp10s >63A


3. Phase-losing Motion Characteristic
No Times of the setting current Motion time Start condition Ambienttemperature
Any two phases Another phase
1 1.0 0.9 >2h Cold state 205oC
2 1.15 0 <2h Heat state(Following the No.1 test)


4. Specification
Type Number Setting range (A) For contactor
JR28-25 1301 0.1~0.16 CJX2-09~32
1302 0.16~0.25 CJX2-09~32
1303 0.25~0.4 CJX2-09~32
1304 0.4~0.63 CJX2-09~32
1305 0.63~1 CJX2-09~32
1306 1~1.6 CJX2-09~32
1307 1.6~2.5 CJX2-09~32
1308 2.5~4 CJX2-09~32
1310 4~6 CJX2-09~32
1312 5.5~8 CJX2-09~32
1314 7~10 CJX2-09~32
1316 9~13 CJX2-09~32
1321 12~18 CJX2-09~32
1322 17~25 CJX2-32
JR28-36 2353 23~32 CJX2-09~32
2355 30~40 CJX2-09~32
JR28-93 3322 17~25 CJX2-09~32
3353 23~32 CJX2-09~32
3355 30~40 CJX2-09~32
3357 37~50 CJX2-09~32
3359 48~65 CJX2-09~32
3361 55~70 CJX2-09~32
3363 63~80 CJX2-09~32
3365 80~93 CJX2-95
JR28-150 4365 80~104 CJX2-95
4367 95~120 CJX2-95~115
4369 110~140 CJX2-115

Type Number Setting range (A) For contactor
JR28-150 5369 90~150 CJX2-150
JR28-200 F5357 30~50 CJX2-F115~F185
F5363 48~80 CJX2-F115~F185
F5367 60~100 CJX2-F115~F185
F5369 90~150 CJX2-F115~F185
JR28-630 F5371 132~220 CJX2-F225~F265
F7375 200~330 CJX2-F225~F500
F7379 300~500 CJX2-F225~F500
F7381 380~630 CJX2-F400~F630