TH-A1D thermal motor protector, TH-K-A1D thermal cutouts
BH series mini thermal protector’s Principle and structure
BH series that can protect against over-current and
over-temperature are sealed firmly, small internal resistance, no
noise and reset automatically. When current through bimetal that
are sensitive to temperature and current, the status of the bimetal
will be changed by over-temperature or over-current to cut off
circuit or switch on circuit. BH series are safer than normal
protectors, as there is no temperature effect lag under condition
of sudden big current.
BH series mini thermal protector’s Application
It is widely applied for all kind of motors, lighting, inverter
welder, switch power supply, heating appliance, rechargeable
battery pack, transformer, rectifier, portable power tool, water
pump, AC motor etc.
BH series mini thermal protector's specification
1. Contact’s type: Normally closed and Normally open
2. Electrical rating:
BH-B2D & BH-A1D: 12A/DC12V;10A/DC24V;8A/AC125V;5A/AC250V
BH-TB02B-B8D:4A/DC12V;3A/DC24V;3A/AC125V;2A/AC250V
3. BH-B2D & BH-A1D Circuit resistance: ≤50mΩ ; BH-TB02B-B8D Circuit
resistance: ≤30mΩ
4. Insulation resistance: ≥100mΩ
5. Action temperature range: 35~155℃
6. Case: metal case and plastic case
7. Life: ≥10,000 times
8. Size:
Model | L(mm) | W(mm) | H(mm) | Electrical rating | Lead wire(mm) |
BH-B2D | 15±0.3 | 7.3±0.2 | 3.8±0.1 | 12A/DC12V;10A/DC24V;8A/AC125V;5A/AC250V | 3266-AWG#24,3135-AWG#24,or nickel strip normally,length is 70mm,or
according to customer’s require |
BH-A1D | 15±0.3 | 6.6±0.2 | 3.2±0.1 |
BH-TB02B-B8D | 13.5 | 5.4 | 2.4 | 4A/DC12V;3A/DC24V;3A/AC125V;2A/AC250V |
9. Open temperature and reset temperature sheet
Code | Open temp. | Reset temp. | Code | Open Temp. | Reset Temp. |
030 | 30±3℃ | ≥20℃ | 095 | 95±5℃ | 70±15℃ |
035 | 35±3.5℃ | ≥25℃ | 100 | 100±5℃ | 70±15℃ |
040 | 40±4℃ | ≥30℃ | 105 | 105±5℃ | 75±15℃ |
045 | 45±4.5℃ | ≥33℃ | 110 | 110±5℃ | 75±15℃ |
050 | 50±5℃ | ≥35℃ | 115 | 115±5℃ | 80±15℃ |
055 | 55±5℃ | 42±6℃ | 120 | 120±5℃ | 85±15℃ |
060 | 60±5℃ | 45±8℃ | 125 | 125±5℃ | 85±15℃ |
065 | 65±5℃ | 48±10℃ | 130 | 130±5℃ | 90±15℃ |
070 | 70±5℃ | 50±12℃ | 135 | 135±5℃ | 95±15℃ |
075 | 75±5℃ | 53±14℃ | 140 | 140±5℃ | 100±15℃ |
080 | 80±5℃ | 55±15℃ | 145 | 145±5℃ | 100±15℃ |
085 | 85±5℃ | 60±15℃ | 150 | 150±5℃ | 105±15℃ |
090 | 90±5℃ | 65±15℃ | 155 | 155±5℃ | 110±15℃ |
BH series mini thermal protector’s advantage
1. Small size and installation size
2. Low internal resistance,≤30mΩ
3. Snap type, sensitive to current and temperature and action
quickly
4. Endurance life more than 10000 cycles.
5. Prevention again leak if vacuum impregnation process
6. Double protection of over-current & over temperature
7. Replacer of 4mm/6MM form SENSTAT, IP405/505 from ISUZU and other
imported products from PEPI
BH series mini thermal protector’s drawing
