BH-B2D BH-A1D Bimetal Temperature Switch and Temperature Protector rated at 250V 5A with operating range of 30-150°C. These sealed thermostats provide reliable protection against over-current and over-temperature conditions with automatic reset functionality.

BW & BH series thermostats are firmly sealed devices with small internal resistance, no noise generation, and automatic reset capability. When current passes through the temperature-sensitive bimetallic element, changes in temperature or current cause the bimetal to change state, either opening or closing the circuit. BH series provides enhanced safety compared to standard protectors, with no temperature effect lag during sudden high-current conditions.

• BH Series: DC-12V max 12A; DC-24V max 10A; AC-125V max 8A; AC-250V max 5A
• BH-TB02 Series: DC-12V max 4A; DC-24V max 3A; AC-125V max 3A; AC-250V max 2A

• 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

BH series thermal protectors serve as effective, reliable security protection and alarm devices. They are widely used in:

• 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 operating conditions. Enforced types capable of withstanding 3.5MPa pressure are suitable for built-in installation in plastic coated motors.