Intrinsic Safety & Dust Proof Valve Limit Switch
The MSL200 valve limit switch is designed for quarter-turn rotary actuators to feedback valve position signals reliably. It supports intrinsic safety plus dust explosion-proof version and non-explosion-proof version to match different industrial working environments.
This limit switch provides two optional switch types: mechanical and inductive. It comes with dual electrical connection ports, supporting G1/2, 1/2NPT and M20*1.5 cable entries. The operating ambient temperature ranges from -40℃ to +80℃.
The housing can be selected from aluminum alloy or stainless steel, delivering IP66 / IP67 ingress protection rating against dust and moisture. It is widely applied in chemical, pharmaceutical and oil & gas automation pipelines to monitor the open/closed status of rotary valves.
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Product Principle
1、German production process and technology
2、NAMUR standard interface
3、Built-in brand-name switch (switch type optional)
4、IP67 ingress protection rating
5、Temperature range: -40°C ~ +80°C
6、Rugged die-cast aluminum housing
7、Stainless steel housing available upon request
8、Optional continuous position feedback
Key parameters
| parameter catalog | Value |
| Explosion Protection Type | Intrinsic Safety + Dust / Non-explosion-proof |
| Switch Type | Mechanical / Inductive |
| Electrical Connection | 2x (G1/2, 1/2NPT, M20*1.5) |
| 2x (1/2NPT, M20*1.5) | |
| Suitable Actuator Type | Quarter-turn (rotary) actuator |
| Ambient Temperature | -40°C ~ +80°C |
| Housing Material | Aluminum alloy / Stainless steel |
| Ingress Protection Rating | IP66/IP67 |
FAQ
We are a manufacturer with our own factory and independent R&D team. Our NAMUR limit switch boxes are produced under strict quality control with German production technology.
Yes, we offer customizable housing materials (aluminum die-cast or stainless steel), switch types (mechanical or inductive), and optional continuous feedback. Explosion-proof configurations are also available.
The limit switch box features IP67 protection and operates reliably from -40°C to 80°C, suitable for various industrial environments.
The NAMUR standard interface ensures direct mounting on actuators and valves, providing a standardized connection for position feedback in automation systems.
Both mechanical and inductive switch types are available, with optional continuous feedback to meet different control requirements.
It is widely used in angle stroke cylinder position feedback, valve automation, and industrial process control systems requiring reliable position sensing.
