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上海敏正电子有限公司
免费会员·3年产品介绍
MZ2系列PTC热敏电阻器MZ2 SERIES PTC THERMISTOR
用于过流保护For Over-current Protection
产品特点FEATURES
MZ2系列PTC是一种自动保护，自动恢复，反复使用，无触点，
无噪音，无火花的“万次保险器”。
PTC of MZ2 series is a million- time safety device of automatic protection,
recoverability, using repeatedly, and no trigger ,noise or sparks.
当PTC处于常态时，阻值很小，不会影响到变压器初、次级线
圈等被保护电路的正常工作。
When PTC is in the normal state, the resistance is too low to affect the regular work
of the protected circuit such as the voltage transformer’s primary and secondary loops.
当电路出现故障时，PTC陡然发热，阻值聚增至高阻态，使电路
处于相对“断开”状态，保护电路。
When the circuit is in disorder, the PTC will generate heat suddenly, and the resistance value will go up to the high state,. which can make the circuit in the state of relatively “breaking up” to protect the circuit.
主要应用APPLICATIONS
小型变压器初级线圈，充电器、通信设备程控交换机保安单元、雷电浪涌保护电路及线路的过流过载保护
Overload and current protection of mini voltage transformer primary loops, chargers, safety guard unit and thunder surging protection circuit of ecom apparatus, and industry-controlling exchangers
电能表，数字万用表RS485接口的过流保护，数字万用表的过流保护，微电机、晶体管的过流保护
Over-current protection of ammeter, digital multi-meterRS485interface, micro-electricity machinery and transistor
一般技术参数GENERAL TECHNICAL DATA
| 额定工作电压RATED VOLTAGE | Vn | 12V ~ 220 Vrms |
| zui大工作电压MAX. OPERATING VOLTAGE | Vmax | 20V ~ 265 Vrms |
| 耐电压SURGE VOLTAGE WTTHSTANDING | Vs | Vmax×（1.2~1.5） |
| 阻值允差（常规）TOLERANCE OF RESISTANCE （TYP.） | ΔRN | ±20%（M），±25%（V） |
| 不动作电流NON-TRIP CURRENT | In | 10mA~1800mA |
| 动作电流TRIP CURRENT | It | 20mA~3600mA |
| zui大工作电流MAX. OPERATING CURRENT | Imax | 0.2A~10.0Arms |
| 恢复时间RESTORE TIME | Tr | 60 S（max） |
| 一般开关次数TYPICAL SWITCHING TIMES | N | 100次 |
| 开关温度允差TOLERANCE OF SWITCHING TEMP. | ΔTc | ±10℃ |
| 工作温度范围OPERATING TEMPERTURE RANGE | TA | -25 ~ +125℃（V=0 V） 0~ +60℃（V=Vmax） |
| 储存条件STORAGE CONDITIONS： 温度Temperature 相对湿度Relative humidity 大气压Atmosphere pressure | -40 ~ +85℃ ≤95% RH （±40℃） 86 ~ 106 Kpa | |
