16P 5 OHM 120C 900mA Inverter Welding Machine Positive Temperature Coefficient PTC Thermistor

Description

MZ21 Type Thermistor used for overcurrent protection in telecommunication and AC circuit.
Function:PTC Thermistor Special for over current,overload protection of welding machines.
Technical parameters of Welding machine overload protection PTC Thermistor:
16P nominal R25 resistance: conventional 6 Ω, also 3.7 Ω, 5 Ω, 7 Ω, 10 Ω, 12 Ω, 15 Ω
Allow R25 resistance deviation: 100 Ω ± 30%, others: ± 25 %
Rated power: 0.5 W

Summary

16P PTC Thermistor used for overcurrent protection in telecommunication and AC circuit.

Structure and Dimensions

Shape and Dimension (unit :mm)

Part no									DMAX							W±1.0						TMAX			Φd±0.05
MZ21- P500RMN									18.0							5.0						5.0			0.8

Performance Specification

Part no

rated resistance (25℃±1℃)

switch temperature (±7℃)

break down voltage Ac

non-operating current (at 40℃)

typical trip current

Operating ambient temperature range

MZ21-P500RMN

5Ω±20%

120℃

300 V

450 mA

900 mA

-10~+45℃

How to Order 16P PTC Thermistor

① — PTC Thermistor
②

Product style
2	Current limited
3	Delay time

③

Product type					Sequence No.
1					1.Coating type
					2.Plastic type
					3.Empty body
3					No mark

④ — — switch temperature,P:120℃
⑤ — Ω(resistance value) 5＝5×10 0 ,
⑥ — ( OHM )
⑦ — — (Tolerance) K:±10%, M:±20%, N:±25%
⑧ — — (Diameter of Chip) N:Ф16mm

The 16P PTC Thermistor Characteristics Curve

Working Principle

When the circuit is in normal state, the current passing through the PTC thermistor is less than the rated current, and the PTC thermistor is normal and the resistance is small.Does not affect the normal operation of the protected circuit. When the circuit fails and the current greatly exceeds the rated current, the PTC thermistor suddenly heats up and is in a high resistance state. The circuit is disconnected to protect the circuit from damage. When the failure is eliminated, the PTC thermistor automatically returns to a low resistance state and the circuit returns to normal
operation.

Advantage

1.Automatic circuit protection,can resume steadily,
2.contactless,noiseless and flameless,
3.reacts fast,
4. with a better performance of overvoltage protection,
5.wide operating voltage range,
6.small steady resistance,
7.low rated current,
8.small resistance,small size,
9.stable for a long time,
10.no need to be reset supply after overload protection,
11.wide operating temperature range, 0 ~ +60°C (V=Vmax), -25 ~ +125°C (V=0),
12.RoHS compliant.

Contact Details:

Andy Wu

Email: andy@tianrui-fuse.com.cn

Tel/Whatsapp: +86 13532772961

Wechat: HFeng0805

Skype: andywutechrich

QQ: 969828363

Dongguan Tianrui Electronics Co., Ltd. was founded in 2010. It covers an area of 4,000 square meters and has a monthly production capacity of 50 million pieces. We are committed to be a comprehensive circuit protection component manufacturer and solution supplier. We are specialized in the design, development, production and sale of over-current protection, over-temperature protection, and over-voltage protection. Our products are widely used in consumer electronics, automobiles, ships, communications, power supplies, power tools, new energy and other fields. Our products cover auto-fuse, auto-fuse holder, current fuse, current fuse holder, temperature fuse, SMD fuse, resettable fuse, circuit breaker, thermal switch and so on. our products meet international standards including UL,

UR,CSA,CUL,VDE,TUV,PSE,CE,CCC,ROHS certification etc.

Partners:

Our products not only sell well in mainland China but also in North & South America, Southeast Asia and many other countries and regions. Our company has independent development and design capabilities, plastic molding, and metal stamping departments, and is equipped with multiple automatic fuse production lines and testing equipment and strives to find the best raw material suppliers. As we always put the quality at the first place, we have built a complete quality assurance system, which is the guarantee of the safety and stability of each product. Meanwhile, If you are interested in any of our products or would like to discuss a custom order, please feel free to contact us.

We are looking forward to the cooperation with you in the near future.