TB05-BB5D Series Thermal Protector 250V 16A Kw9700 Bimetallic Thermostat

BH series thermostat / Miniature thermal protector / Rechargeable battery thermostat

BW & BH series protectors offer protection against over-current and over-temperature conditions. They feature sealed construction, small internal resistance, no noise, and automatic reset functionality. When current passes through the temperature and current-sensitive bimetal, the bimetal's status changes in response to over-temperature or over-current conditions, either cutting off or switching on the circuit. BH series provide enhanced safety compared to standard protectors, as there is no temperature effect lag under sudden high current conditions.

BH series thermal protectors are effective, reliable security protectors 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

These protectors prevent damage from over-current and over-heating caused by abnormal work conditions. Enforced types that can withstand pressure of 3.5MPa are suitable for built-in installation of plastic coated motors.

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

• Switch type: normally closed, normally opened
• Operating Voltage / Current: AC250V / 5A; AC125V / 8A
• Operating Temperature: 40~150℃ (one step for every 5°C)
• Standard Tolerance: ±3°C / ±5°C / ±7°C
• Reset temperature: operating temperature decrease by 15-45°C
• Contact Closure resistance: ≤50mΩ
• Insulation resistance: ≥100mΩ
• Electric strength: AC1500V/1min free from phenomena of break down and flashover
• Service life: 10000 times

BW series is applicable to chargeable batteries, ballasts, massagers, motors, transformers, electric tools, heat electric appliances, and instruments.