| Customization: | Available |
|---|---|
| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Energy-storage Type |
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The metal parts of the thermal protector shall not have burrs, cracks, deformations, rusting, or other phenomena;
The logo should be correct, upright, and clear;
The ceramic substrate is intact, without defects, cracks, staining, etc.
4. Performance:
4-1
Rated electrical:
Rated current: AC 250V/10A AC 125V/18A
4-2 Action temperature:
Disconnecting temperature: X X ± 5 (adjustable according to customer requirements)
Reset temperature: Automatic reset (adjustable according to customer requirements)
Note: Attached is a temperature characteristic comparison table
4-3 Contact resistance:
In the closed state, the contact resistance between the two contacts of the thermal protector is less than 50m Ω.
4-4 Insulation resistance:
The insulation resistance is greater than 100M Ω.
4-5 Moisture resistance
After being placed in an environment with a temperature of 25 ºC and a relative humidity of 95% for 10 hours, it meets the requirements of items 4-4 and has no abnormal changes in its appearance and structure.
4-6 cycle heating
After being cycled at temperatures of -20 ºC and+90 ºC every 2 hours for 10 times, it meets the requirements of items 4-4 and has no abnormal changes in appearance and structure.
4-7 Heat resistance
After being placed at a temperature of 150 ºC for 10 hours, it meets the requirements of items 4-4 and has no abnormal changes in appearance and structure. The change in operating temperature is within ± 5 ºC.
4-8 Cold resistance
After being placed at a temperature of -20 ºC for 10 hours, it meets the requirements of items 4-4 and there are no abnormal changes in its appearance and structure.
The change in operating temperature is within ± 5 ºC.
4-9 repeated opening and closing durability
At room temperature, test under rated load conditions of AC 50Hz, voltage 220V, and power factor COS ∧=0.7
After 4000 cycles, the rated operating temperature should be within ± 5% ºC of the initial value, and the contacts should not undergo fusion welding. Continue testing for 6000
The secondary thermal protector should still be operational.
4-10 Vibration resistance
A fixed frequency test with a vibration frequency of 50Hz, an amplitude of 0.35mm, and a duration of 90min should be conducted. After the test, the rated disconnection temperature should meet the requirements
According to the regulations of 4-2.
4-11 Drop impact resistance
After falling from a height of 1200mm to the concrete floor three times, there is no abnormal change in its appearance and structure.
The operating temperature is within ± 5 ºC.
Identification: The product size, model, operating temperature, etc. are shown in the following figure.
| Nominal operating temperature | break-off temperature | Reset temperature (reference value) |
Nominal operating temperature | break-off temperature | Reset temperature (reference value) |
| 50ºC | 50±5ºC | Above 30ºC | 110ºC | 110±5ºC | 70±15ºC |
| 55ºC | 55±5ºC | 115ºC | 115±5ºC | 75±15ºC | |
| 60ºC | 60±5ºC | Above 35ºC | 120ºC | 120±5ºC | 80±15ºC |
| 65ºC | 65±5ºC | 125ºC | 125±5ºC | ||
| 70ºC | 70±5ºC | 130ºC | 130±5ºC | 85-105ºC | |
| 75ºC | 75±5ºC | Above 45ºC | 135ºC | 135±5ºC | |
| 80ºC | 80±5ºC | 140ºC | 140±5ºC | ||
| 85ºC | 85±5ºC | 145ºC | 145±5ºC | ||
| 90ºC | 90±5ºC | 60±15ºC | 150ºC | 150±5ºC | 110-130ºC |
| 95ºC | 95±5ºC | 60±15ºC | 160ºC | 160±5ºC | |
| 100ºC | 100±5ºC | 60±15ºC | 165ºC | 165±5ºC | |
| 105ºC | 105±5ºC | 65±15ºC | 170ºC | 170±5ºC |
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