Thermal Fuse KSD301 250°C

Description

Product DescriptionThe KSD301 Snap Disc Bimetal Thermostat Switch (250°C variant) is a high-temperature, fixed-interval thermal safety cutout designed to provide critical overheat protection in heavy-duty commercial appliances and specialized heating equipment. Utilizing a specialized, pre-calibrated ceramic housing to withstand extreme thermal exposure, its internal bimetallic disc operates with a crisp “snap action” that instantly alters the circuit state the exact moment the sensing interface reaches $250^circtext{C}$ ($482^circtext{F}$).This component is universally structured as a Normally Closed (NC) safety reset switch. Under standard running profiles, current passes through the terminals uninterrupted. If a thermal runaway event or main regulator failure occurs, causing the temperature to spike to $250^circtext{C}$, the contacts snap apart instantly to kill all incoming power. Depending on the exact sub-variant model, it will either automatically reset once temperatures drop back to a safe baseline or feature a center manual reset button that must be physically pressed before the appliance can be powered on again.Key SpecificationsModel Designation: KSD301 / KSD301-G / KSD302-Ceramic High Temp SeriesAction Temperature: $250^circtext{C}$ ($482^circtext{F}$) fixed factory calibration.Circuit Logic: Normally Closed (NC) — Opens on temperature rise.Voltage Rating: $250text{V AC}$ universal mains operation.Current Capacity: Available in standard $10text{A}$ or heavy-duty $16text{A} – 20text{A}$ continuous load resistance configurations.Housing Material: High-grade, heat-hardened Ceramic isolation body (essential for thresholds above $180^circtext{C}$ where standard Bakelite plastics degrade or melt).Terminal Design: Dual flat $6.3text{mm}$ ($1/4text{ inch}$) quick-connect male spade lugs (available in straight or $90^circ$ right-angle orientations).Compatibility GuideBecause high-temperature snap discs are built to open global industrial criteria, they are cross-compatible across an array of brands based entirely on shape footprint, current tolerance ($16text{A}/20text{A}$), and temperature matching ($250^circtext{C}$).1. Alternative Branding & Sourcing EquivalentsThis 250°C thermostat serves as a direct drop-in replacement for equivalent lines distributed by regional and global marketplace networks, including:TopazTrove / Sourcing map: Matches the premium KSD301 250V 16A 250°C Ceramic Thermostats distributed on platforms like Daraz.lk.Dongguan City Heng Hao Electric: Matches the physical dimensions of factory-original replacement parts frequently exported globally for appliance service kits.2. Common Applications & ProductsA high $250^circtext{C}$ threshold makes this component a crucial emergency safety cutoff or cycling controller inside high-heat consumer and catering gear:Microwave Ovens & Convection Grills: Positioned near top browning elements or grill plates to act as a secondary fire-prevention safety switch.Commercial Coffee Makers & Urns: Serves as a dry-burn protection fuse clamped tightly to high-wattage heating manifolds.Electric Ovens, Toasters & Deep Fryers: Functions as the ultimate high-limit safety line that triggers if the main adjustable bimetal control dial welds closed.Disinfection & Sterilization Cabinets: Monitors temperature consistency during high-temperature thermal sterilization cycles.⚠️ Installation Tip: At $250^circtext{C}$, standard wire insulation will melt. When replacing this switch, ensure that all connecting wires are fitted with high-temperature fiberglass or silicone-coated braided sleeves. Apply a micro-layer of premium thermal paste under the aluminum mounting flange to guarantee rapid, accurate temperature reading responses.