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Scope of Application

JRS1 Thermal Overload Relay is suitable for the circuits with rated voltage up to 690V, rated current 83A, AC 50Hz, for overload and phase-failure protection of AC motor. The relay has the differential mechanism and temperature compensation and can plug in CJX2 series AC contactor. The product conforms to GB14048.4 stardand.

Model and Meaning

Normal working conditions and installation conditions

Ambient temperature: -5℃~+40℃, the average value does not exceed +35°C in 24 hours.
Altitude: no more than 2000m.
Atmospheric conditions: The relative humidity does not exceed 50% at +40°C, and higher relative humidity may be allowed at lower temperatures. For example, 90% at 20°C, special measures should be taken for the occasional condensation due to temperature changes.
Pollution level: 3 levels.
Installation category: Class III.
Installation conditions: The inclination of the installation face and the vertical is not more than ±5°.
In addition to mounting screws, the relay can also use 35mm standard rail.
Shock vibration: The relay should be installed and used in places where there is no significant shaking, shock and vibration.
Transportation, Storage: The relay should not be subject to severe impact and vibration during transportation, and it must not be affected by rain or snow in transportation and storage. Relays are suitable for transport and storage at -25°C ~ +55°C, and at +70°C for short periods (in 24h).

Structure Feature

Insert combination type (Z) can be derived into independent type (F).
a. Z combination type can be directly connected with CJX2 series AC contactor;
b. F independent type has all terminals.
With phase failure and temperature compensation structure;
The product has reasonable structure, reliable operation and safe operation and use.
Installation operation
Setting current is continuously adjustable.
With manual reset, action indication function.
Normally closed and normally open auxiliary contacts are insulated and separated.
4. With the stop device.
5. Wiring of insert combination type installation or independent type installation.

Main Technical Parameters

Rated current and setting range of thermal element

Model Rated insulation voltage Ui Adjusting range of setting current For contactor
JRS1-09301 690V 0.1~0.16 CJX2-09
JRS1-09302 0.16~0.25
JRS1-09303 0.25~0.40
JRS1-09304 0.40~0.63
JRS1-09305 0.63~1
JRS1-09306 1~1.6
JRS1-09307 1.6~2.5
JRS1-09308 2.5~4
JRS1-09310 4~6
JRS1-09312 5.5~8
JRS1-09314 7~10
JRS1-09316 10~13 CJX2-12
JRS1-16321 13~18 CJX2-16
JRS1-25322 18~25 CJX2-25
JRS1-40353 23~32 CJX2-40
JRS1-40355 30~40
JRS1-63357 38~50 CJX2-63
JRS1-63359 48~57
JRS1-63361 57~66
JRS1-80363 63~80 CJX2-80
Note: JRS1-80 is only discrete installation type

Auxiliary circuit parameters

Model Rated insulation voltage Utilization Category Rated operational voltage Rated operational current Conventional thermal current
DC-13 DC 220V 0.15A
JRS1 500V AC-15 AC 380V 0.47A 6A

Protection characteristics of JRS1 thermal relay

Setting current multiples Action time Start condition Ambient temperature
1.05 >2h Cold 20℃
1.2 <2h Heat
1.5 <2min Heat
7.2 2s<TP≤10s Cold
Any two phases 1.0, another phase 0.9 >2h Cold
Any two phases 1.15, another phase 0 <2h Heat
Temperature compensation performance 1.0 >2h Cold 55℃
1.2 <2h Heat
1.05 >2h Cold -5℃
1.3 <2h Heat

Outline and Installation Dimension

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