Magnetic float level switch CN523

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The CN523 is a submersible magnetic float level switch designed for point-level liquid detection, alarm management and tank safety applications.

It is particularly suitable for drinking water, clear water under calm or turbulent conditions, and installations with narrow access openings where conventional cable-suspended float switches cannot be used.

Its operating principle is based on a mercury-free magnetic float, protected by a 316L stainless steel housing that acts as both a ballast weight and a wave-damping enclosure. The electrical contact can be configured as normally open (NO) or normally closed (NC) by simply reversing the float orientation.

The CN523 can be suspended by its cable, flange-mounted or installed inside a guide tube without requiring movement or tilting of the entire assembly.

Technical specifications:

Technology: mercury-free magnetic float

Detection type: single-point, on/off

Contact: normally open (NO) or normally closed (NC), selectable

Switching capacity: 1 A / 240 V AC maximum

Hysteresis: 3 to 5 mm

Diameter: 45 mm

Height: 80 mm (excluding cable)

Body: 316L stainless steel and PVC

Float: polyethylene

Weight: 400 g (excluding cable)

Connection: 2-core shielded cable

Standard 10 m PVC cable

Cable lengths up to 300 m with Kevlar-reinforced self-supporting cable

Suspended, flange-mounted or guide-tube installation

The CN523 is suitable for liquids compatible with PVC and 316L stainless steel. It must not be used in wastewater applications.

Applications: water tank level detection, high- or low-level monitoring, alarm management, overflow protection and installations with restricted access.