Interruptores de controle de termostato de disco de limite personalizado da China Therm o-Disc

Disco instantâneo, ou 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. transportando até AC 110V/400V, 10A-60A amperes-240 Volts.

Termostato de limite de aquecedor L150-20 Thermodisc aberto em ascensão

Termostato de limite de aquecimento KSD302 SHL120 com adaptador de placa de flange

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, Aquecedores elétricos, Aparelhos domésticos, motores, 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!! Então 130 ou 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!!

Aplicativo: Aplicável a equipamentos elétricos e eletrodomésticos com grandes cargas de energia, como máquinas de solda, aquecedores de água, aquecedores, baterias de veículos elétricos, máquinas de lavar, geladeiras, termostatos para louças sanitárias, etc..

1. Parâmetros elétricos: 1) CQC, VDE, UL, CUL. AC250V 50~60Hz 5A / 10UM / 15A~60A (carga resistiva).
2. UL AC 125V 50Hz 15A (carga resistiva).
2. Faixa de temperatura operacional: 0~240℃ (opcional).
3. Recuperação e diferença de temperatura operacional: 8~100℃ (opcional).
4. Método de fiação: terminal de plugue 250# (dobrar 0~90° opcional); terminal de plugue 187# (dobrar 0~90° opcional, grossura 0.5, 0.8mm opcional).
5. Resistência elétrica: AC 50Hz 1800V por 1min, sem cintilação, sem avaria.
6. Formulário de contato: Tipo normalmente fechado: temperatura sobe, desconexões de contato, gotas de temperatura, contato conecta; Tipo normalmente aberto: temperatura sobe, contato conecta, gotas de temperatura, desconexões de contato.
7. Nível de proteção do shell: IP00.
8. Método de aterramento: conectado às partes metálicas de aterramento do dispositivo através da carcaça metálica do termostato.
9. Método de instalação: Série KSD302 com anel móvel, anel fixo, anel móvel da placa de montagem, tampa comum de aço inoxidável com furos de montagem.
10. Faixa operacional de temperatura: -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