Ref 4TM Overload 1/10HP

Description

4TM Refrigerator Compressor Thermal Overload Protector (1/10 HP) ### Product Overview The 4TM Thermal Overload Protector (1/10 HP) is a vital electromechanical safety switch engineered to protect small-capacity fractional horsepower compressors from electrical burnout and overheating. This compact module contains a calibrated bimetallic snap-action disc and an internal heating element. If your refrigerator’s compressor fails to start, draws excessive current (locked rotor), or experiences a severe voltage drop, the bimetal disc quickly reacts and breaks the circuit. Once the compressor has cooled down to a safe operational threshold, the switch automatically resets, safely re-energizing the system. ### Key Features Engineered for 1/10 HP Systems: Calibrated to match the exact thermal and current tolerances of small 1/10 HP (~75W to 90W) refrigeration compressors. Dual Thermal-Current Sensing: Provides comprehensive protection by monitoring both the physical temperature of the compressor shell and the electrical current passing through the windings. Direct Plug-On Installation: Standard low-profile “butterfly” style casing designed to press tightly directly onto the compressor’s common terminal pin under the plastic terminal cover. Durable Electrical Contacts: Built with high-grade conductive alloy terminals and a heavy-duty, flame-retardant housing to withstand continuous thermal cycling. ### Product Compatibility & Sizing Specifications Because 4TM protectors are standardized functional components, compatibility is determined by matching the horsepower rating (1/10 HP), operating voltage (typically 110V/120V or 220V/240V), and the pin layout. Direct Replaces & Equivalent Configurations: Sensata / Texas Instruments Klixon: Original 4TM Series (matches various codes such as 4TM134NFBYY, 4TM197NFBYY, or similar configurations depending on regional voltage). Universal Replacements: Directly replaces any generic round, square, or rectangular overload protector rated specifically for 1/10 HP or ~85 Watts. Common Pairings: Typically pairs alongside 1-pin, 2-pin, or 3-pin PTC solid-state starter relays on micro-refrigeration circuits. Compatible Appliance Types: Small household single-door refrigerators and kitchen mini-fridges. Tabletop automatic ice makers and office water dispensers/coolers. Small commercial display counters and under-counter beverage chillers. Compact chest freezers and specialized cosmetics/skin-care cooling units. Common Compatible Compressor & Appliance Brands: This universal protector is a direct fit for mini-compressors integrated into appliances from many major domestic and international brands, including: Embraco / Secop / Danfoss (Commonly found on smaller high-efficiency micro-series compressors like the EM/NSY/TLS series) Whirlpool / Kenmore / Maytag (Compact and hospitality lines) Frigidaire / Danby / Haier Midea / Galanz / RCA / Panasonic ⚠️ Installation Note: Ensure the overload protector is pushed entirely and firmly onto the compressor pin. A loose connection will create localized electrical resistance, causing the protector to get artificially hot and trip continuously even if the compressor itself is completely healthy. Always unplug the appliance before beginning the replacement.