Kain Electronic SCI&TECH. Company
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Place of Origin: | Zhejiang, China (Mainland) |
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KI67 Electric Motor Thermal Protection , Overheat Protection
Motor overheat protector description Product description
KI67 universal and enhanced serial thermal protectors are widely used in industry , electrical household appliance and electric equipment to avoid abnormal operation caused by overcurrent and overtemperature . The products provide effective , reliable and safe protection . The enhanced casing is suitable for internal installation of plastic hermetic motor , which can bear the plastic molding pressure at 3.5Mpa . The performance of the products satisfies the standards including IEC34-11 , GB13232 , GB / T13002 , etc .
Structure and protection principle
KI67 type thermo protector is composed of the parts of thermal conductive casing , bimetallic parts welded with silver alloy contact point , conductive bracket , insulation fixation stand , fixed contact strip and heat resistance cable . When current passes through the bimetallic parts with resistance and in case of abnormal operation , along with the increase of current or the environment temperature rises to the set value , the bimetallic parts perform quick action , opens the contact point , and disconnects the circuit . When the device is cooled to the temperature for safe operation , the contact point will automatically closes and recover normal operation .
Design Detail
Note
1. Because the casing is made of conductive metal, thermal conductive and heat resistance insulation
sleeves are required for use.
2. Refer to A-C graph for selecting protection temperature.
Rated action temperature table
Type |
Open Temperature Range |
Type |
Open Temperature Range |
50 |
50±5.0 |
100 |
100±5.0 |
55 |
55±5.0 |
105 |
105±5.0 |
60 |
60±5.0 |
110 |
110±5.0 |
65 |
65±5.0 |
115 |
115±5.0 |
70 |
70±5.0 |
120 |
120±5.0 |
75 |
75±5.0 |
125 |
125±5.0 |
80 |
80±5.0 |
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