Kinija Custom Limit Disc termostato valdymo jungikliai Therm o-Disc

Snap Disc, arba 3/4″ Limit switch thermostats are bimetal mechanical thermostats that function via the thermal expansion and contraction of a bimetal disc that “snaps” from a convex to a concave shape at a set temperature. nešioti iki AC 110V/400V, 10A-60A amperai-240 voltų.

L150-20 šildytuvo ribinis termostatas termodiskas atidaromas pakilus

KSD302 SHL120 šildymo ribinis termostatas su jungės plokštės adapteriu

KSD302R-453 Normally Open/Manual Reset 3/4″ Snap Disc Limit Control Switches

Limit Disc Thermostat Control switches are the same for different stoves, Electric ovens, electric water heaters, elektriniai šildytuvai, buitiniai prietaisai, variklius, refrigeration or heating equipment. so to replace it cheap you just have to understand their function.

Why are they called Snap Discs Limit Thermostat is because they are round like a disc and have a Bi-Metal Strip that Snaps when heated to a certain temperature!

Most Limit Disc switches are SPST Thermostat single pole single throw. This means one wire in and one wire out. So when the temp rises the wires are connected which means the switch is closed ( Equipment power outage ).

It will also keep the fans running after the Electric oven / electric heater has been manually or automatically turned off until the exhaust temperature cools down. Unless it is like the Disc Thermostat which has another identical switch just like it to keep the fans running. Sometimes they have a part number with a designation F for Fan or L for Low Limit but don’t be fooled they are the same type of switch! After all you can test it with a continuity checker or ohm meter. When the switch is cold the meter should read open or infinity on the ohms scale and when heated above 140 Degrees F the switch will close and read a short or no ohms Usually a bad low limit switch means the Electric oven, electric heater stops running after the 15-20 min Electric oven, electric heater start-up cycle.

Also the part numbers for each Electric oven, electric heater manufacturer may differ.
Since most open when the exhaust temp drops below 140 degrees f the part number may be called L140 Also they close when the exhaust temp rises above 140 degrees f or 150 degrees f so they may be called F130 or F160 Let’s get real here folks these Limit Disc switches are not fully digital with precise accuracy!! So 130 arba 160 may be within the specs of the bi-metal strip inside meaning there are the same switch!!

So in the pic here below is one that I found cheap. Note the physical mounting is usually the same with the mounting holes 2 inches apart. Most Electric oven, electric heater have a male quick disconnect terminal but some Electric oven, electric heater like YAXUN who make their own switch have screw terminals. However the screws can be removed and a clip can go on it but they do charge more for the extra unnecessary hardware!!

Taikymas: Taikoma elektros įrangai ir buitiniams prietaisams su didelėmis galios apkrovomis, pavyzdžiui, suvirinimo aparatams, Vandens šildytuvai, šildytuvai, elektromobilių akumuliatoriai, Skalbimo mašinos, šaldytuvai, santechnikos termostatai, ir tt.

1. Elektriniai parametrai: 1) CQC, VDE, UL, CUL. AC250V 50~60Hz 5A / 10A / 15A~60A (varžinė apkrova).
2. UL AC 125V 50Hz 15A (varžinė apkrova).
2. Darbinė temperatūros diapazonas: 0~240 ℃ (neprivaloma).
3. Atkūrimo ir darbinės temperatūros skirtumas: 8~100 ℃ (neprivaloma).
4. Laidų sujungimo būdas: kištuko gnybtas 250# (lenkimas 0–90° neprivalomas); kištuko gnybtas 187# (lenkimas 0–90° neprivalomas, storio 0.5, 0.8mm neprivaloma).
5. Elektrinis stiprumas: AC 50Hz 1800V 1min, jokio mirgėjimo, jokio gedimo.
6. Susisiekimo forma: Paprastai uždaras tipas: temperatūra pakyla, kontaktas atsijungia, temperatūra nukrenta, kontaktas jungiasi; Paprastai atviras tipas: temperatūra pakyla, kontaktas jungiasi, temperatūra nukrenta, kontaktas atsijungia.
7. Korpuso apsaugos lygis: IP00.
8. Įžeminimo būdas: prijungtas prie įžemintų metalinių prietaiso dalių per metalinį termostato korpusą.
9. Montavimo būdas: KSD302 serija su kilnojamu žiedu, fiksuotas žiedas, montavimo plokštės kilnojamas žiedas, įprastas nerūdijančio plieno dangtis su tvirtinimo angomis.
10. Temperatūros veikimo diapazonas: -32℃∽+320 ℃.

Select type KSD302 instead White-Rodgers Snap Disc Manual Limit Control

Select type KSD302 Thermostat Normally Closed NC Snap Disc Limit Control Switc