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The Powergenex LSB Limit Switch Box range is a range of position indicators used in pneumatic instrumentation. They provide visual feedback on a valve’s position via various switches and sensors.

Choose from three models. The LSB-1000 model has a standard beacon indicator which provides clear visual position monitoring. The LSB-3000 is an explosion-proof model that can either have a beacon or bottom indicator, as well as an optional stainless steel housing.

The explosion proof LSB-7000 model also has a built-in solenoid valve, making it an economical and compact device.

This limit switch box has a rugged housing and flameproof attribute that suit harsh working conditions. It can be supplied with a NAMUR mounting shaft for pneumatic actuators or fork lever shaft for non-NAMUR pneumatic actuators.

Technical specifications




LSB-1000 (Standard)
LSB-3000 (Explosion-proof)
LSB-7000 (Explosion-proof with built-in solenoid)

Operating air pressure

1.5–10 bar

Maximum air supply

10 bar

Protection class

IP66 and 67 (LSB-1000)
Flameproof Ex d IIC T6/T5/T4, IP67 or IP68 (LSB-3000)
Flameproof Ex d IIB+H2 T6, IP67 (LSB-7000)

Operating temperature

-30°C to +75°C

Material specifications


Aluminium die cast
316 stainless steel
316L stainless steel

How we help you choose the right valves:

1. Tell us what you need

Talk to our experts about your application, which valves and controls you need, and any repair or maintenance concerns.

2. Choose the right solution

We’ll do all the analysis, discuss the options with you, and make a recommendation—the valves we’d choose in your shoes.

3. Get the job done

Get the right valves for the job, fitted out, tested, and ready to install. We’ve got your back with ongoing repairs and maintenance.

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