The M12 4-pin waterproof connector is the connection standard for sensors, actuators and field wiring where the joint has to survive washdown and weather. Screw coupling, moulded body, IP67 – it is the fitting at both ends of almost every proximity sensor and photoelectric sensor run on automated lines.
代码字母到底规定了什么
| 规格 | 参数值 | 决定了什么 |
|---|---|---|
| 类型 | M12 A 型编码，4 针 | A 型编码 = 传感器通用编码；4 针覆盖标准直流三线制传感器加一根备用 |
| 防护等级 | IP67 | Dust-tight, survives immersion short-term – the washdown class |
| 连接方式 | 螺纹锁紧 | 抗振动连接；不会被拉拽误拔 |
| 触点 | 镀金 | 为 mA 级传感器信号提供低而稳定的接触电阻 |
| 最小起订量 | 500 pcs | 公头/母头、直头/弯头可拆分下单 |
实际工程中的选型规则
- Count the pins the signal needs, then add the spare: a standard DC three-wire sensor uses three – supply, output, ground – and the fourth pin carries the next function or stays as a factory-set spare.
- Right-angle heads for tight panels: the straight body is the default; the right-angle variant saves the cable’s minimum bend radius inside cabinets and on moving carriers.
- Pre-moulded cable or field assembly: pre-moulded wins on IP integrity; field-assemblable wins on spare-parts logistics. Most retrofits standardise on pre-moulded for sensors and keep connectors as the repair stock.
- Most field failures traced to sensors are connector entries: an unsealed thread or an over-torqued gland defeats the IP67 rating of both halves – follow the sensor selection guide guidance and confirm the mating pair before blaming the sensor.
常见问题
4 针 A 型编码适配我的传感器吗？
If the sensor is a standard DC three-wire type with an M12 A-coded socket, yes – that is exactly what this connector is built for. Send the sensor datasheet page when you enquire and we confirm before shipping.
Male or female, straight or right angle – how do I split the 500 pcs?
自由拆分：起订量按订单总数算，不按变体算。多数用户的配置是传感器端用直头公线，柜侧用较小批量的弯头母头。
怎么计价？
Request a quote – Per piece against quantity and variant split, quoted FOB, CFR or CIF against your destination port.