Sylvania Overload Heater Bulletin 6002 Model M1.9

The Sylvania Overload Heater Bulletin 6002 Model M1.9 is a thermal overload protection element designed for use in manual motor starters, particularly compatible with Allen-Bradley Bulletin 600 series starters. These heaters provide essential motor protection by sensing excessive current and tripping the starter to prevent damage from overloads or phase failures. Featuring a bimetallic or eutectic alloy construction, they offer reliable performance in industrial environments such as manufacturing plants, conveyor systems, and HVAC applications. Key advantages include easy installation, precise current calibration for 1.9A full-load amperage motors, and compatibility with legacy systems, making them ideal for maintaining older equipment. Benefits over similar products include Sylvania's reputation for durability and consistent trip characteristics, reducing downtime and maintenance costs. However, drawbacks may include limited availability due to the product's vintage nature (likely from the mid-20th century) and the need for exact matching to starter models to avoid incompatibility. These heaters are not suitable for modern digital overload relays, which offer more advanced features like adjustable settings and diagnostics. Overall, they excel in cost-effective retrofits for NEMA-rated motors up to approximately 1 HP, ensuring safe operation in three-phase or single-phase setups.