Dongguan Heng Hao Electric Co., Ltd
                                                                                                           
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HC25 Thermal Protector Ksd9700 Temperature Controller HCET-B Thermostat HCET-A HCET-A5

Price Negotiable
Price: US$0.18-0.3 per.pc
MOQ: 1000PCS
Delivery Time: 7-10 WORKING DAYS
Brand: HENGHAO
Product Description
HC25 Thermal Protector KSD9700 Temperature Controller HCET-B Thermostat HCET-A HCET-A5
Product Overview

BH series thermostat / Miniature thermal protector / Rechargeable battery thermostat

BH Series Thermostat - Principle and Structure

BW & BH series protectors provide reliable protection against over-current and over-temperature conditions. These units are firmly sealed, feature small internal resistance, operate silently, and reset automatically. When current flows through the temperature and current-sensitive bimetal component, abnormal conditions cause the bimetal to change state, either cutting off or restoring the circuit. BH series protectors offer enhanced safety compared to standard protectors, with no temperature effect lag during sudden high-current events.

BH Series Thermostat internal structure and components
BH Series Thermostat - Specifications
Parameter Specification
Electrical Rating DC-12V max 12A; DC-24V max 10A; AC-125V max 8A; AC-250V max 16A
Open Temperature (30~150)±5°C; 5°C increments
Reset Temperature 2/3 of action temperature with ±15°C tolerance. Custom reset temperatures available per customer requirements.
Life Cycles 10,000 operations
Dimensions L15mm × W7.1mm × H3.8mm
Lead Wire #22 3266, end half tripping, 70mm length (custom lengths available)
UL File Number E487478
CQC Certificate CQC16002142880
TUV Certificate B160592241002
BH Series Thermal Protector - Dimensions
Model Case Length (mm) Width (mm) Height (mm) Voltage & Current Lead Wire
H20 Plastic 18.5 8 4 DC-12V max 12A; DC-24V max 10A; AC-125V max 8A; AC-250V max 10A #20 3135, end 5mm half tripping, 70mm length (custom available)
H21 Metal 18.5 7.3 3.8 - -
H21 Metal 20 8 4 AC250V 20A #16 3135
BH-A1D Metal 15 6.6 3.2 DC-12V max 12A; DC-24V max 10A; AC-125V max 8A; AC-250V #20 3135, #22 3266, #22 3135, end 5mm half tripping, 70mm length (custom available)
BH-B2D Plastic 15 7.1 3.8 - -
BH-TB02B-B8D Plastic 15 5.2 2.4 DC-12V max 4A; DC-24V max 3A; AC-125V max 3A; AC-250V max 2A 3266-AWG24#, 3135-AWG24# or nickel strip, 70mm length (custom available)
BH Series Thermostat - Applications and Instructions

BH series thermal protectors are effective, reliable security protection and alarm devices widely used in various applications including 1.5 horsepower motors, lighting devices, inverter welding machines, switch power supplies, rechargeable battery packs, fluorescent lamp ballasts, portable power tools, electric appliances, and other electrical equipment. They prevent damage from over-current and over-heating caused by abnormal operating conditions. Enforced types capable of withstanding 3.5MPa pressure are suitable for built-in installation in plastic coated motors.

Temperature Coding Reference
Code Temperature Code Temperature
30 30℃ 100 100℃
35 35℃ 105 105℃
40 40℃ 110 110℃
45 45℃ 115 115℃
50 50℃ 120 120℃
55 55℃ 125 125℃
60 60℃ 130 130℃
70 70℃ 135 135℃
75 75℃ 140 140℃
80 80℃ 145 145℃
85 85℃ 150 150℃
90 90℃
BW Series Thermostat / KSD9700 Thermal Protector / BW9700 Temperature Protector
Principle and Structure

BW series universal and enhanced protectors feature large metal casings and consist of thermal conductive metal casing, bimetallic components welded with silver alloy contact points, conductive brackets, insulation fixation stands, fixed contact strips, and heat resistance cables. During abnormal operation, when environmental temperature rises to the set value, the bimetallic components perform quick action, opening the contacts and disconnecting the circuit. When the device cools to safe operating temperature, the contacts automatically close and normal operation resumes.

Specifications
  • Switch Type: Normally closed, normally opened
  • Operating Voltage / Current: AC250V / 5A; AC125V / 8A
  • Operating Temperature: 40~150℃ (5°C increments)
  • Standard Tolerance: ±3°C / ±5°C / ±7°C
  • Reset Temperature: Operating temperature decreased by 15-45°C
  • Contact Closure Resistance: ≤50mΩ
  • Insulation Resistance: ≥100mΩ
  • Electric Strength: AC1500V/1min (no breakdown or flashover)
  • Service Life: 10,000 operations
Dimensions
Model Length (mm) Width (mm) Height (mm)
BW9700 20 7.3 3.8
Applications

BW series is applicable to rechargeable batteries, ballasts, massagers, motors, transformers, electric tools, heating appliances, and instrumentation.

Temperature Specifications
Code Open Temperature Reset Temperature Code Open Temperature Reset Temperature
045 45±4.5℃ ≥33℃ 105 105±5℃ 75±15℃
050 50±5℃ ≥35℃ 110 110±5℃ 75±15℃
055 55±5℃ 42±6℃ 115 115±5℃ 80±15℃
060 60±5℃ 45±8℃ 120 120±5℃ 85±15℃
065 65±5℃ 48±10℃ 125 125±5℃ 85±15℃
070 70±5℃ 50±12℃ 130 130±5℃ 90±15℃
075 75±5℃ 53±14℃ 135 135±5℃ 95±15℃
080 80±5℃ 55±15℃ 140 140±5℃ 100±15℃
085 85±5℃ 60±15℃ 145 145±5℃ 100±15℃
090 90±5℃ 65±15℃ 150 150±5℃ 105±15℃
095 95±5℃ 70±15℃ 155 155±5℃ 110±15℃
100 100±5℃ 70±15℃
The product has UL, CQC, VDE and RoHS certification approval.
BW Series thermal protector product image and certification details

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Dongguan Heng Hao Electric Co., Ltd
Location No.9, five lane, Shangchegang, Shangtang road, Gekeng, Hengli Town, Dongguan City, Guangdong, China
Contact Person Cherry Lee

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