品名】：中间继电器 小型继电器
【型号】：MY2NJ MY4NJ
【可选电压】：12V、24V、48V、110V、220V
【外形尺寸】：27.5×21×35.3mm
【输出触点】：MY2NJ，二组常开常闭转换带电源指示灯；MY4NJ，四组常开常闭转换带电源指示灯.
欧姆龙MY2NJ，电磁继电器的工作原理。电磁继电器的工作原理
电磁式继电器一般由铁芯、线圈、衔铁、触点簧片等组成的。只要在线圈两端加上一定的电压，线圈中就会流过一定的电流，从而产生电磁效应，衔铁就会在电磁力吸引的作用下克服返回弹簧的拉力吸向铁芯，从而带动衔铁的动触点与静触点（常开触点）吸合。当线圈断电后，电磁的吸力也随之消失，衔铁就会在弹簧的反作用力返回原来的位置，使动触点与原来的静触点（常闭触点）吸合。这样吸合、释放，从而达到了在电路中的导通、切断的目的。对于继电器的「常开、常闭」触点，可以这样来区分：继电器线圈未通电时处于断开状态的静触点，称为「常开触点」；处于接通状态的静触点称为「常闭触点」。■额定值
| 项目 | 双极 | 4极 | ||
| 阻性负载（cosφ=1） | 感性负载（cosφ=0.4、L/R=7ms） | 阻性负载（cosφ=1） | 感性负载（cosφ=0.4、L/R=7ms） | |
| 额定负载 | 5A，220VAC 5A，24VDC | 2A，220VAC 2A，24VDC | 3A，220VAC 3A，24VDC | 0.8A，220VAC 1.5A，24VDC |
| 负载电流 | 5A | 3A | ||
| 最大开关电压 | 250VAC,125VDC | 250VAC,125VDC | ||
| 最大开关电流 | 5A | 3A | ||
| 最大开关容量 | 1,100VA 120W | 440VA 48W | 660VA 72W | 176VA 36W |
| 最小容许负载 | 1mA,5VDC | 1mA,1VDC | ||
| 接点材质 | 银 | 银＋镀金 | ||
注. P 水平：λ= 0.1×10-6/操作，参考值
| 接触电阻 | 50mΩ以下 | |||||
| 动作时间 | 25ms以下 | |||||
| 复位时间 | 25ms以下 | |||||
| 操作频率 | 机械 | 18,000次/小时 | ||||
| 电气 | 18,000次/小时 | |||||
| 绝缘电阻 | 100MΩ以上（在500VDC） | |||||
| 绝缘强度 | 线圈与接点间 | 2,000VAC，50/60 Hz 1分钟 | ||||
| 与同极接点间 | 1,000VAC，50/60 Hz 1分钟 | |||||
| 振动 | 破坏 | 10～55Hz，1.0mm双振幅 | ||||
| 故障 | 10～55Hz，1.0mm双振幅 | |||||
| 冲击 | 破坏 | 1,000m/s2（约100G） | ||||
| 故障 | 200m/s2（约20G） | |||||
| 周围环境温度 | -55℃～70℃（不结冰） | |||||
| 周围环境湿度 | 35％～85％RH | |||||
| 寿命 | 机械（开关频率18,000次/小时） | AC线圈 | 40,000,000次以上 | |||
| DC线圈 | 80,000,000次以上 | |||||
| 电气（开关频率1,800次/小时） | 2极 | 400,000次以上（额定负载下） | ||||
| 4极 | 160,000次以上（额定负载下） | |||||
| 重量 | 约35g | |||||
注. 上述值均为初始值。
以下为欧姆龙继电器常备货规格型号：
MY2NJ AC200/220 BY OMZ
MY2NJ AC220/240 BY OMZ
MY2NJ DC24 BY OMZ
MY4NJ AC200/220 BY OMZ
MY4NJ AC220/240 BY OMZ
MY4NJ DC24 BY OMZ
LY2NJ AC200/220 BY OMI
LY2NJ AC220/240 BY OMI
LY2NJ DC24 BY OMI
LY4NJ AC200/220 BY OMI
LY4NJ DC24 BY OMI
MY2J AC200/220 BY OMZ
MY2J AC220/240 BY OMZ
MY2J DC24 BY OMZ
MY4J AC200/220 BY OMZ
MY4J AC220/240 BY OMZ
MY4J DC24 BY OMZ
LY2J AC200/220 BY OMI
LY2J AC220/240 BY OMI
LY2J DC24 BY OMI
LY4J AC200/220 BY OMI
LY4J DC24 BY OMI
PTF08A-E BY OMI
PTF14A-E BY OMI
PYF08A-E BY OMZ
PYF14A-E BY OMZ
MY2NJ AC24 BY OMZ
MY2NJ AC50 BY OMZ
MY2NJ AC6 BY OMZ
MY2NJ DC100/110 BY OMZ
MY2NJ DC12 BY OMZ
MY2NJ DC24 BY OMZ
MY2NJ DC48 BY OMZ
MY2NJ DC6 BY OMZ
MY2NJ-CR AC100/110 BY OMZ
MY2NJ-CR AC110/120 BY OMZ
MY2NJ-CR AC200/220 BY OMZ
MY2NJ-CR AC220/240 BY OMZ
MY2NJ-D2 DC100/110 BY OMZ
MY2NJ-D2 DC12 BY OMZ
MY2NJ-D2 DC24 BY OMZ
MY2NJ-D2 DC48 BY OMZ
MY4NJ AC100/110 BY OMZ
MY4NJ AC110/120 BY OMZ
MY4NJ AC12 BY OMZ
MY4NJ AC200/220 BY OMZ
MY4NJ AC220/240 BY OMZ
MY4NJ AC24 BY OMZ
MY4NJ AC48 BY OMZ
MY4NJ AC6 BY OMZ
MY4NJ DC100/110 BY OMZ
MY4NJ DC12 BY OMZ
MY4NJ DC24 BY OMZ
MY4NJ DC48 BY OMZ
MY4NJ DC6 BY OMZ
MY4NJ-CR AC100/110 BY OMZ
MY4NJ-CR AC110/120 BY OMZ
MY4NJ-CR AC200/220 BY OMZ
MY4NJ-CR AC220/240 BY OMZ
MY4NJ-D2 DC100/110 BY OMZ
MY4NJ-D2 DC12 BY OMZ
MY4NJ-D2 DC24 BY OMZ
MY4NJ-D2 DC48 BY OMZ
