Normally Closed 85 Deg C H20 Thermal Cutoff Switch for Temperature Protection
Quick Detail:
| Model | H20 |
| Reset Type | Auto Reset |
| | Single Pole,Single Throw(SPST) |
| Case Material: | Plastic or Metal |
| Rated Voltage & Current | 250V AC 5A/10A |
| Contact Type | Normally Closed(Open on Rise) or Normally Open(Close on Rise) |
| Operating Temperature Range | 45～150℃ |
| Temperature tolerance | ±5.0℃ |
| Contact Resistance | ≤50mΩ |
| Insulation Resistance | ≥100MΩ |
| Dielectric Strength | ≥1500V |
| Life Cycle | 10,000 Cycles |
| Certificate | CQC,TUV,UL,VDE,ROHS,REACH |
Description:
H20 thermal prtoection switch is using a special shape of double metal piece without auxiliary mechanism. The status of metal piece has the fast change is only depended on the self temperature sensing of the metal piece and the current thermal reaction. It makes the contact realize the cut off the power automatically and get through the power. The over heating protection and overload protection will be raised. H20 thermal protection switch can be applied for transformers; battery; lighting electrics; cleaning machine; water pump; electric tools; electric heating pad; and the household appliances.
Work Principle:
H20 thermal protection switch is using the double metal piece as e temperature sensing element. When the electrics work normally, the double piece is at the free status, the contact is at close/break off position. When the temperature rises to the action temperature, the double metal piece acts fast by the inside force caused by heating, open/close the contact, cut off/get through the power, the temperature protection function is raised. When the temperature lows to the reset temperature, the contact closes/breaks off automatically and recovery to normal work status.
Characteristics:
Stable performance, high precision, small size, light weight, high reliability, long life and small radio interference.
Specifications:
1. Dimensional Outline
2. Structural Drawing
| No. | Name | Material | Qty |
| 1 | Case | PBT | 1 |
| 2 | Moveable spring piece | Beryllium bronze | 1 |
| 3 | Bimetallic strip | BR-1 | 1 |
| 4 | Moveable contact | AgNi10/Cu | 1 |
| 5 | Sealing | Epoxy resin | Few |
| 6 | Lead wire | 0.75mm² black silicon wire | 2 |
| 7 | Base | Brass H62 | 1 |
| 8 | Stationary Contact piece | AgNi10/Cu | 1 |
| 9 | Insulation blcok | PBT-VG30 | 1 |
| 10 | Tinning | Tin | Few |
3. Action Temperature Table
| H20 |
| Action Temperature | Reset Temperature | Action Temperature | Reset Temperature |
| 40±5℃ | ≥27℃ | 110±5℃ | 73±15℃ |
| 45±5℃ | ≥27℃ | 110±5℃ | 73±15℃ |
| 50±5℃ | ≥30℃ | 115±5℃ | 76±15℃ |
| 55±5℃ | ≥30℃ | 120±5℃ | 80±15℃ |
| 60±5℃ | 40±15℃ | 125±5℃ | 83±15℃ |
| 65±5℃ | 43±15℃ | 130±5℃ | 86±15℃ |
| 70±5℃ | 46±15℃ | 135±5℃ | 90±15℃ |
| 75±5℃ | 50±15℃ | 140±5℃ | 93±15℃ |
| 80±5℃ | 53±15℃ | 145±5℃ | 96±15℃ |
| 85±5℃ | 56±15℃ | 150±5℃ | 100±15℃ |
| 90±5℃ | 60±15℃ | | |
| 95±5℃ | 63±15℃ | | |
| 100±5℃ | 67±15℃ | | |
| 105±5℃ | 70±15℃ | | |
| Remark : |
| Reset Temperature: 2/3 of Action Temperature, tolerance is±15℃ or customized. |
Applications:
1. HID ballasts
2. Battery packs
3. Fractional Power Motor
4. AC brushless motorand pump
5. DC motor
6. Heating appliance
7. Vacuum cleaner
8. Auto Wiper
Competitive Advantages:
1. Miniature size and expedient installation
2. Various resistances of bimetal available
3. Safe and reliable
5. High sensitivity
4. Low contact resistance
5. Life cycles more than 10,000 times
6. ROHS compliant
6. Wide application
7. Gasketed case suitable for most impregnation processes
8. There are two types of normally closed and normally open can meet customers' different requirements
9. The length and specifications of lead wire can be customized
10. Substitute SENSATA 7AM,17AM,SEKI St22 series
Tag:
Motor Protector, Thermal Cut-out, Overload Protector, Overheat Protector, Temperature Switch,Thermal Protection Switch
