Thermal Relay JRS2-80(for CJX1 AC Contactor)
Specifications
1. ISO9001 and ISO14001 approval.2. CE passed.
3. Professional manufacturer.
4. Reasonable packing.
General
A thermal relays connected with a contactor breaks the circuit in order to isolate the motor in case of over load or phase is cut out. The contactor with a thermal relay becomes a much useful device. That protects the consumer against the over current, also protects the contactor against the effects or over heat.
Full fill following standard
IEC60947-4-1
How Thermal Relay Works
Each phase of thermal overload relay is related to over current angle. Bimetals pushes the differential bar and opens the circuit when it is heated. Only two bimetals operate when one phase is cut out and the over current angle operates much rapidly due to over current. The mechanism of the thermal relay compensates changes of ambition temperature and prevents the relay against effects of temperature changes. The average value of opening characteristic of thermal current relay under not condition operation is smaller than cold condition. In other words, cold relay open later than hot relay approximately ratio at the determined current. That is important about safety of for the relay and protected device. The relay under hot condition and over loaded 1.5 times should break circuit within 2 min. for motors according to IEC60947-4-1.
Below is selection form for JRS2 Series Thermal Relay:
| Type | Setting Range(A) | For Contactor | Case Qty.(Pcs) |
| JRS2-80/Z-1G | 4~6.3 | CJX1-45~85 | 48 |
| JRS2-80/Z-8A | 11~17 | CJX1-45~85 | 48 |
| JRS2-80/Z-2B | 12.5~20 | CJX1-45~85 | 48 |
| JRS2-80/Z-2C | 16~25 | CJX1-45~85 | 48 |
| JRS2-80/Z-2D | 20~32 | CJX1-45~85 | 48 |
| JRS2-80/Z-2E | 25~40 | CJX1-45~85 | 48 |
| JRS2-80/Z-2F | 32~50 | CJX1-45~85 | 48 |
| JRS2-80/Z-2T | 40~57 | CJX1-45~85 | 48 |
| JRS2-80/Z-2P | 50~63 | CJX1-45~85 | 48 |
| JRS2-80/Z-2V | 57~70 | CJX1-45~85 | 48 |
| JRS2-80/Z-2U | 63~80 | CJX1-45~85 | 48 |
| JRS2-80/Z-8W | 70~88 | CJX1-45~85 | 48 |
| Model | Rated Current(A) | Rated Insulation Voltage(V) |
| JRS2-12.5 | 14.5 | 660 |
| JRS2-25 | 25 | 660 |
| JRS2-32 | 36 | 660 |
| JRS2-45 | 45 | 660 |
| JRS2-63 | 63 | 660 |
| JRS2-80 | 88 | 660 |
| JRS2-135 | 135 | 660 |
| JRS2-150 | 150 | 660 |
| JRS2-180 | 180 | 660 |
| JRS2-400 | 400 | 660 |
| JRS2-630 | 630 | 660 |
Feature: JRS2 Series Thermal relay aslso called Overload relay to protect Contactor which is working with.
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3. Packing
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