PRODUCT CATEGORIES

* Small size and easy for mounting;

* Low current sensitivity, no large temperature difference due to over current;

* Precise temperature control.

250V AC : 3A

125V AC : 6A

24V DC: 6A

Contact Resistance: ＜30mΩ

Dielectric Strength: 2KV

Transformer

Coil

Curtain Motor

Washing Machine Motor

CQC:17002172427

UL&CUL:E309992

TUV:R 50383352 0001

VDE:40048046

1. Why are there two current parameters for current sensing thermal protector?

It is a confusing question for some engineers. Actually, for current sensing thermal protectors, there are two current parameters. One is rated current. It is the nominal working current. The other one is tripping off current, also called over-loading current.

For the rated current, for examples, 3A or 5A, it means that the thermal protector can not trip off under this current. It would only cut the circuit off when temperature reaches the pre-set value.

But for the tripping off current, it means that the thermal protector has to trip off very quickly, like 4 to 10 seconds under this current. It is for overload protection purpose. General speaking, the tripping off current is around triple or 4 times of rated current. For example, if the rated current is 3A, the tripping off current should be set at 9A to 15A. It is only a rough estimation. The accurate value depends on the technical requirements of mock-up test and application.

2. What’s your smallest size of thermal switch?

For some applications that have special demands for mounting space, the size of thermal switch would be extremely important. For example, battery pack, small motor and heating tube. They have no enough room to mount a thermal switch with bigger size. We now have two models with smallest size.

1. TS05, thickness 2mm only. It is now widely used for battery overheat protection and heating tube temperature control. This super thin thickness can make it insert into the batteries or heating tubes easily. The conductive leads can be wire or nickel strip.

2. S01 series. It is 8mm diameter and 2.6mm thick, even smaller than a cell battery. It is used for PCB mounting. S01 with lead wire is used in small coil, transformer, heating tube or motor. The max temperature can be 220C.

3. Why does the smaller size thermal protector have higher price?

Customers like to ask the question:” Why does the smaller size thermal protector have higher price?” It sounds that it does not make sense. In fact, there are some reasons:

1. For the small size thermal protector, all parts have to be more precise. It means that we need to use better manufacturing machineries. The equipment cost would be higher.

2. The yield rate of smaller size thermal protector is lower than common size. So, the final cost would be higher.

3. The material of small size thermal protector is different also. The material has to be more reliable. Accordingly, the price of raw material is higher.

4. For the small size thermal protector, we have to use different machineries and manufacturing process. Both the manufacturing cost and labor cost are much higher than common size.

Due to the above reasons, the final cost of smaller size thermal protector is higher than common size.

Contact Information

Company Name: Yangzhou Wuyue Electric Co.,Ltd

Address:Building D, Software Information Industrial Park, No.2 Huaijiang Avenue, Baoying County, Jiangsu Province, China

Contact: Lorena Qiao

Mobile: +86 153 6641 6606 / 189 2191 2633

Tel: +86 514 88986588

Fax:+86 514 8898 6599

Web: http://www.wuyuetech.com

http://https://wuyuecn.en.alibaba.com

Email: sales01@wuyuetech.com