Thermal Fuse KSD301 65°C

Description

Product Description The KSD301 Snap Disc Bimetal Thermostat Switch (65°C variant) is a compact, fixed-temperature thermal management switch designed for precision temperature regulation and safety protection in consumer electronics and domestic appliances. Utilizing a pre-calibrated internal bimetallic disc, it operates via a sudden “snap action” that instantly alters the circuit state the exact moment the sensing surface or surrounding ambient air reaches 65 ∘ C (149 ∘ F). This 65°C component is widely deployed across two primary circuit behaviors: Normally Closed (NC): The primary safety configuration. Current passes through the switch under standard temperatures. If the system overheats or dry-burns up to 65 ∘ C, the disc snaps open to break the circuit and cut power. It automatically resets once the unit cools down safely (typically dropping by 10 ∘ C−15 ∘ C). Normally Open (NO): The primary cooling or indicator configuration. The circuit remains open until the surface hits 65 ∘ C, at which point the contacts snap shut to activate an exhaust fan, cooling grid, or alarm light. Key Specifications Model Designation: KSD301 / KSD301-R / KSD301A Series Action Temperature: 65 ∘ C (149 ∘ F) fixed factory calibration. Voltage Rating: 125V−250V AC universal operation. Current Capacity: Standard 10A or heavy-duty 16A continuous load resistance options. Housing Material: High-insulation Bakelite (black polymer body) or high-durability Ceramic. Terminal Design: Dual flat 6.3mm (1/4 inch) quick-connect male spade lugs. Mounting Base: Loose/movable aluminum mounting flange bracket with twin screw holes for surface alignment. Compatibility Guide The KSD301 footprint is a globally standardized engineering profile. It is cross-compatible across an array of heating and cooling platforms based on physical shape, current tolerance (10A/16A), and temperature calibration (65 ∘ C). 1. Alternative Branding & Sourcing Equivalents This component acts as a direct drop-in replacement for 65°C snap disc switches manufactured or distributed by lines such as: Awozkcd Series: Directly replaces the Awozkcd 65°C Temperature Control Switch multipacks used for home appliance maintenance. Sourcing map / uxcell: Matches the standardized Bakelite and Ceramic 65°C bimetal configurations distributed across major online hardware catalogs. 2. Common Applications & Products A 65 ∘ C threshold is ideal for low-to-moderate temperature regulations, commonly serving as an essential part in: Microwave Ovens & Coffee Makers: Monitors ambient chassis or element chamber temperatures to prevent sensitive internal electronics from cooking under sustained use. Electric Water Boilers & Beverage Warmers: Regulates low-heat thresholds or serves as a baseline warming controller to keep liquids hot without boiling them. Commercial Coffee Urns & Coffeemakers: Serves as a direct replacement part for keeping beverages at an optimal serving temperature (such as in Bartscher Regina 40 commercial brewers). Battery Packs & Power Inverters: Used in its Normally Open (NO) state to trigger small 12V or 24V DC ventilation fans when electrical components or battery cells generate moderate operational heat. ⚠️ Installation Tip: For maximum accuracy, ensure the aluminum cap of the thermostat is mounted perfectly flat against the heat-source surface. Applying a thin film of thermal paste (heatsink compound) under the cap significantly improves thermal transfer, minimizing response delays.