China Custom Limit Disc Termostat Comutatoare de control Therm o-Disc

Snap Disc, sau 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. transportă până la 110V/400V AC, 10A-60A amperi-240 volți.

L150-20 Termostat limită încălzitor Termostat deschis la creștere

KSD302 SHL120 Termostat de limită de încălzire Termostat cu adaptor pentru plăci cu flanșă

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, încălzitoare electrice, aparate de uz casnic, motoare, 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!! Aşa 130 sau 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!!

Aplicație: Se aplică echipamentelor electrice și aparatelor de uz casnic cu sarcini mari de putere, cum ar fi aparatele de sudură, încălzitoare de apă, încălzitoare, baterii de vehicule electrice, masini de spalat rufe, frigidere, termostate pentru obiecte sanitare, etc.

1. Parametrii electrici: 1) CQC, VDE, UL, CUL. AC250V 50~60Hz 5A / 10A / 15A~60A (sarcină rezistivă).
2. UL AC 125V 50Hz 15A (sarcină rezistivă).
2. Interval de temperatură de funcționare: 0~240℃ (opțional).
3. Recuperare și diferență de temperatură de funcționare: 8~100℃ (opțional).
4. Metoda de cablare: borna priza 250# (îndoiți 0~90° opțional); borna priza 187# (îndoiți 0~90° opțional, grosime 0.5, 0.8mm opțional).
5. Rezistență electrică: AC 50Hz 1800V timp de 1 min, nicio pâlpâire, nici o avarie.
6. Formular de contact: Tip normal închis: temperatura crește, contactul se deconectează, temperatura scade, contactul se conectează; Tip normal deschis: temperatura crește, contactul se conectează, temperatura scade, contactul se deconectează.
7. Nivel de protecție a carcasei: IP00.
8. Metoda de împământare: conectat la părțile metalice de împământare ale dispozitivului prin carcasa metalică a termostatului.
9. Metoda de instalare: Seria KSD302 cu inel mobil, inel fix, placa de montaj inel mobil, capac obișnuit din oțel inoxidabil cu orificii de montare.
10. Interval de temperatură de funcționare: -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