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        Tesla D1321 | Thermal Overload 12-18Amp

        The Tesla D1321 is a thermal overload relay with an adjustable range of 12 to 18A, designed to protect larger motors from sustained overcurrent and overheating. It pairs with D09 to D32 contactors and provides accurate, time-delayed protection by simulating how a motor heats up under load. This makes it essential in industrial automation and heavy-duty motor control systems.

        Unlike circuit breakers that react instantly to short circuits, the D1321 responds to ongoing overload conditions. This helps prevent unnecessary shutdowns while extending motor life. It features manual or automatic reset options and a standard mounting design for straightforward integration into control panels and motor starters.

        Tesla D1321 Features

        • Adjustable 12 to 18A range: Suitable for larger motor protection
        • Compatible with D09 to D32 contactors: Seamless integration with control gear
        • Trip reset options: Manual or automatic reset flexibility
        • Accurate overload detection: Responds to thermal buildup during operation
        • Standard mounting design: Installs easily in motor starters and panels

        Where to Use the Tesla D1321

        • Industrial machinery and motors: Reliable protection for high-demand equipment
        • Pumps and compressors: Maintains safe operation under continuous load
        • Production lines and conveyors: Prevents downtime due to motor failure
        • HVAC systems: Protects large fans and mechanical components from overload

        (D1321)

        It’s sized for motors in the 12–18A range, providing dependable overload protection for heavy-duty use.

        Use the built-in dial to set the relay between 12A and 18A to match your motor’s rating.

        No. It ignores brief inrush currents at startup and only trips on sustained overloads.

        Yes. It’s built for motors that handle high-demand, continuous workloads.

        Yes. It’s commonly installed to prevent costly downtime on production lines.

        Too low could cause nuisance trips; too high may leave the motor unprotected.

        100-Day Fuss-Free Returns
        We want you to love what you buy—but if you change your mind, that’s okay too. That’s why Sparky Direct offers a 100-day money-back guarantee.

        • Items must be unused, with all parts, accessories, and original packaging.
        • We can’t accept returns if the product is damaged, incomplete, or not in resalable condition.
        • Proof of purchase is required.
        • Return shipping is the responsibility of the customer. 

        If your item isn’t in its original condition, please contact us before returning it—we might save you time and money.

        All products come with a manufacturer’s or supplier’s warranty

        • Warranty starts from the Invoice Date
        • Some suppliers offer in-home warranties and handle claims directly, so you won’t need to uninstall or return the product. Chat with us to check if your product qualifies.
        • Sparky Direct isn’t responsible for losses caused by product failure.
        • Warranties are void if products aren’t installed by a licensed electrician.

        Damaged or Faulty Goods
        If your order arrives damaged or is faulty, let us know within 24 hours.

        • Sparky Direct will pay for return shipping via an emailed return label.
        • If the fault is confirmed, we will send you a replacement item or provide a refund.

        Contact us via our chat to arrange the return.

        Exclusions
        We can’t accept returns for:

        • Items that have been installed, modified, or used
        • Clearance, End of life, Discontinued, or special order items (unless faulty)
        • All PPE Items
        • Goods returned without original packaging or proof of purchase

        How to Request a Return

        1. Contact our customer service team with your order number.
        2. Confirm it’s eligible under our return or warranty policy.
        3. Pack the item securely and return it using a trackable service.
        4. Once we receive and inspect it, we’ll process your refund or replacement.

        Warranty starts from Invoice Date

        Domestic Use: 1 Year
        Commercial Use: 1 Year
        Warranty Method: Return to Sparky Direct

        These specifications and characteristics outline physical, mechanical, electrical details.

        Brand Tesla
        SKU D1321
        Model # D1321
        Package Weight 0.170kg
        Package Width 0.075m
        Package Height 0.100m
        Package Length 0.050m
        View Datasheet
        TYPE VALUE
        Type Thermal Overload
        Brand Tesla
        Range (A) 12-18
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