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Prroduct introduction

MZ1 series PTC thermistor is a kind of protection element for abnormal temperature and abnormal current automatic protection and automatic recovery, 

commonly known as "self-recovery fuse" and "ten thousand fuses".

The principle is shown in Figure 2: When the circuit is in the normal state, the current through the PTC is less than the rated current, 

PTC is in the normal state, the resistance value is small, and will not affect the normal operation of the protected circuit. 

When the circuit fails and the current greatly exceeds the rated current, the PTC suddenly heats up and presents a high resistance state, 

so that the circuit is in a relatively "off" state, thus protecting the circuit from damage. 

When the fault is removed, the PTC automatically returns to the low resistance state, and the circuit returns to normal operation.

Select PTC thermistor as overload protection element, 

first confirm the maximum normal working current of the line 

(that is, the inactive current of the PTC thermistor) and the maximum ambient temperature of the installation position of the PTC thermistor (during normal operation), 

followed by the protection current (that is, the operating current of the PTC thermistor), 

the maximum working voltage, and the rated zero power resistance. Factors such as the dimensions of the components should also be considered.

As shown in Figure 3, the relationship between ambient temperature, non-operating current and operating current is used. 

The action current is usually 2-3 times that of the non-action current, 

and the non-action current and the action current will decrease accordingly as the operating temperature rises.

PRODUCT FEATURES

1. MZ1 series products are resin coated guide line The MZ1

2. Suitable for continuous operation at 15-1500VAC (high resistance state) high voltage

3. Complete specifications

4. Long-term high stability

5. No need to set the overload protection after the product

6. Switch no contact, no noise

APPLICATION

1. Switch the power supply

2. Transformers, adapters, chargers, micromotors

3. Electronic coil, control panel

4. Home appliance control board (air conditioner, microwave oven, etc.)

5. Electronic circuits

6. Instrumentation

OVERALL STRUCTURE

MARKING OF PART NUMBER

SPEC.Table

Vmax=265/250V

Vmax=265/250V

Vmax=140V

Vmax=30/60V

Vmax=30/60V

Note:

1. Some product specifications in the specification table have passed the TUV and CQC product certification, and the specification with * before the model indicates that it has passed the UL/CUL(E243011) certification.

2. The precision of R25 resistance value in the specification table can be selected according to the actual needs of customers.

3. Product packaging can be packaged according to the actual requirements of customers.

4. Select different lead specifications according to the use conditions.

5. The above parameters are for reference only. If you know the detailed specifications, please refer to the specific model specifications.

FOR OVERLOAD PROTECTION OF INSTRUMENTS