sb2 – rect mag sensor pl bistable

Why Choose the Carlo Gavazzi SB2 Magnetic Sensor?

The Carlo Gavazzi SB2 is a compact and robust rectangular magnetic proximity sensor with a bistable reed contact, designed for reliable non-contact position and presence detection in industrial machinery and automation systems. Part of the Carlo Gavazzi S series, it combines a simple passive switching principle with a durable plastic housing and permanently connected PVC cable.

The SB2 operates in conjunction with a suitable permanent magnet and provides a nominal switching distance of approximately 30 mm, depending on the magnet and installation conditions. Its bistable reed contact retains its switched state after the actuating magnetic field is removed and changes state when exposed to the opposite magnetic polarity, making it useful for applications requiring maintained position indication without continuous actuation.

With a maximum contact switching voltage of 250 V AC, maximum switching current of 3 A and maximum switching power of 100 VA, the SB2 can interface with a broad range of compatible industrial control circuits. Its IP67 plastic enclosure, 0.5 m PVC cable and wide operating temperature range make it suitable for demanding machine and equipment installations.

Key Advantages

• Bistable reed contact provides maintained magnetic switching operation.
• Non-contact magnetic sensing reduces mechanical wear compared with mechanically actuated switches.
• Nominal 30 mm switching distance with a suitable actuating magnet.
• Maximum switching current of 3 A for compatible control loads.
• Maximum contact switching voltage of 250 V AC.
• Maximum switching power of 100 VA.
• IP67 protection supports use in demanding industrial environments.
• Pre-wired 0.5 m PVC cable simplifies electrical installation.

Key Features

• Carlo Gavazzi S series magnetic proximity sensor.
• Rectangular plastic housing.
• Bistable dry reed contact output.
• Magnetically actuated non-contact switching.
• Switching distance approximately 30 mm.
• Maximum switching voltage of 250 V AC.
• Maximum switching current of 3 A.
• Maximum switching power of 100 VA.
• Integrated 0.5 m PVC cable.
• IP67 degree of protection.
• Operating temperature range of -25 to +75 °C.
• Compact dimensions of approximately 79 × 21.2 × 11.5 mm.

Reliable Bistable Magnetic Position Detection

Magnetic proximity sensors use an external magnetic field to operate an internal reed contact without requiring physical contact between the sensor and moving machine component. This provides a simple and dependable method of detecting doors, guards, mechanisms, cylinders and other moving equipment while minimising mechanical wear.

The bistable operating principle of the Carlo Gavazzi SB2 allows the reed contact to remain in its last switched state after the actuating magnetic field has moved away. The opposite magnetic polarity is used to return the contact to its alternate state, making the sensor particularly suitable for maintained position indication and applications where the switching state must be retained.

Typical Applications

• Industrial position and presence detection.
• Machine mechanism position monitoring.
• Door, cover and access-panel position sensing.
• Conveyor and material handling equipment.
• Automated manufacturing machinery.
• End-position detection on moving mechanisms.
• Industrial control and automation systems.
• Applications requiring bistable magnetic switching.