TB05-BB5D Temperature Controller TB11-BB5D Bimetallic Thermostat Kw9700

BH series thermostat / Miniature thermal protector / Rechargeable battery thermostat

BW & BH series protectors provide protection against over-current and over-temperature conditions. They are sealed firmly, feature small internal resistance, operate silently, and reset automatically. When current passes through the temperature and current-sensitive bimetal, the bimetal's status changes due to over-temperature or over-current conditions, either cutting off or switching on the circuit. BH series protectors are safer than normal 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 in 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 the environment temperature increases to the set value, the bimetallic parts perform quick action, open the contact points, and disconnect 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 rechargeable batteries, ballasts, massagers, motors, transformers, electric tools, heat electric appliances, and instruments.