RUKO FRS Form B Magnetic Cylinder Switch, 8 mm Diameter, 2 m Cable, Normally Closed Reed Contact

Detecting piston position in pneumatic or hydraulic cylinders can be challenging when space is tight and reliability is critical. The RUKO FRS Form B magnetic cylinder switch solves this by providing a compact, non-contact sensing solution that mounts directly into the cylinder groove, ensuring consistent and accurate end-of-stroke detection.

Who is it for

This sensor is intended for automation engineers, machine builders, and maintenance technicians who need to monitor cylinder position in industrial machinery, packaging equipment, or assembly lines. It is especially useful where a normally closed (NC) contact is required for safety or logic purposes.

Main features

• Normally closed (Form B) reed contact for fail-safe or inverted logic applications.
• 8 mm diameter cylindrical housing fits standard cylinder grooves and adapter mounts.
• 2 m fixed cable with 2-wire connection for easy integration into control systems.
• Wide switching capability: up to 230 V AC/DC and 0.5 A, 10 W/VA.
• Robust polyamide housing with IP67 protection for harsh industrial environments.
• Operating temperature range from -25 °C to +75 °C.

Specifications

• Sensor type: Magnetic cylinder switch
• Operating principle: Reed contact
• Contact configuration: Normally closed (NC), Form B
• Sensor diameter: 8.0 mm
• Switching voltage (max.): 230 V AC/DC
• Switching current (max.): 0.5 A
• Switching power (max.): 10 W / 10 VA
• Connection type: 2-wire cable
• Cable length: 2 m
• Housing material: Polyamide (PA)
• Protection rating: IP67
• Operating temperature range: -25 °C to +75 °C
• Switching frequency (max.): 1000 Hz
• Response time: < 1 ms
• LED status indicator: No
• Short-circuit protection: No
• Overload protection: No
• Mounting type: Cylinder groove / adapter mounting
• Approvals: CE

Tips

Ensure the cylinder has a standard groove or use a compatible adapter for mounting. The normally closed contact means the circuit is closed when no magnet is present, so it is ideal for detecting loss of piston magnet or for safety interlock circuits.