cl.20/s1 – magnetic unit

Why Choose the Carlo Gavazzi CL.20/S1 Magnetic Unit?

The Carlo Gavazzi CL.20/S1, also identified as CL20S1, is a compact cylindrical permanent magnetic actuator designed for use with compatible Carlo Gavazzi magnetic sensors and reed switches. As part of the Carlo Gavazzi CL Series magnetic units, it provides the magnetic field required to actuate a suitable non-contact magnetic sensor in industrial automation, position detection and machine-control applications.

Unlike an electrically powered sensor, the CL.20/S1 is a passive magnetic unit with no electrical connection or power supply requirement. Its simple permanent-magnet construction makes it suitable for long-term switching applications where reliable, contactless actuation is required. The unit can be mounted to a moving machine component, door, guard or other target so that an associated magnetic sensor changes state when the magnet enters its operating range.

The CL.20/S1 features a round ferrite construction measuring approximately 25.1 mm in diameter and 9.3 mm in height, with a 4.8 mm mounting connection. Its compact cylindrical format allows straightforward installation alongside compatible Carlo Gavazzi magnetic sensing products.

Key Advantages

• Compact permanent magnetic actuator for magnetic sensors.
• Designed for use with compatible Carlo Gavazzi magnetic and reed sensors.
• Passive operation requires no electrical power supply or wiring.
• Ferrite magnetic construction provides durable, dependable actuation.
• Compact 25.1 mm diameter cylindrical format.
• 9.3 mm overall height supports installation in space-restricted machinery.
• 4.8 mm mounting connection for straightforward mechanical installation.
• Suitable for reliable non-contact position and presence detection applications.

Key Features

• Carlo Gavazzi CL Series magnetic unit.
• CL.20/S1 / CL20S1 model designation.
• Permanent ferrite magnet.
• Cylindrical round construction.
• 25.1 mm diameter.
• 9.3 mm height.
• 4.8 mm mounting connection.
• No external electrical supply required.
• No electrical output or cable connection required.
• Designed to actuate compatible magnetic sensors without mechanical contact.
• Suitable for industrial position, movement and presence detection.

Reliable Non-Contact Magnetic Actuation

Magnetic sensing systems use a permanent magnet and a separate magnetic sensor to detect position without requiring direct mechanical contact between the two components. When the CL.20/S1 moves within the operating range of a compatible sensor, its magnetic field causes the sensor to change switching state. Moving the magnet away allows the sensor to return to its normal state according to the characteristics of the selected sensing device.

This contactless operating principle helps minimise mechanical wear and makes magnetic sensing suitable for repetitive position-detection duties. The compact CL.20/S1 can be paired with compatible Carlo Gavazzi magnetic sensors in machinery, automation equipment, doors, guards and other moving assemblies where dependable magnetic actuation is required.

Typical Applications

• Actuation of industrial magnetic sensors.
• Reed switch actuation.
• Machine position detection.
• Door and access position monitoring.
• Industrial automation equipment.
• Moving component detection.
• End-position sensing.
• Material handling machinery.
• Packaging and production equipment.
• Non-contact presence and position detection systems.