Thermal Switch UL Square JB 4" Square Junction Box - Crown

TS300B - Crown Engineering - Thermal Switch UL for 4" Square Junction Box

The TS300B Thermal Switch by Crown Engineering is a UL-listed safety device designed for installation in 4-inch square junction boxes. It provides automatic thermal protection for fuel burner systems by disconnecting power when ambient temperatures exceed a critical threshold.

Key Features:

• Thermal Activation: Automatically shuts off power at 165°F, preventing overheating and fire hazards.
• UL Listed: Certified for safety and compliance in residential and industrial heating systems.
• Fusible Element Design: The hand wheel melts under high heat, triggering the switch; easily replaceable after activation.
• Safe Installation: No exposed wires or contacts when properly mounted.
• Durable Construction: Built for long-term reliability in demanding environments.