FZ 2121-M2 Pizzato Position switch, coil spring with cat’s whisker

Why Choose the Pizzato FZ2121-M2 Position Switch?

The Pizzato FZ2121-M2 is a robust industrial position and limit switch with a coil spring and cat's whisker actuator, designed for dependable position, presence and movement detection in machinery and automation systems. As part of the established Pizzato FZ series, it combines a durable metal enclosure with a highly flexible spring actuator that accommodates multidirectional contact with moving machine components.

The FZ2121-M2 incorporates a 3NC slow-action contact configuration using Pizzato's B21 contact unit. All three contacts are normally closed, providing three switching channels for machine monitoring and control. The slow-action mechanism provides defined contact operation according to actuator movement, making the switch suitable for reliable electromechanical position detection in industrial machinery.

The coil spring with cat's whisker actuator is particularly useful where the direction or alignment of a moving component can vary, allowing the flexible actuator to deflect when contacted rather than requiring precise linear engagement. The M2 configuration provides two M20 × 1.5 threaded cable entries, while the metal enclosure offers IP67 protection according to EN 60529 for dependable operation in industrial environments exposed to dust and moisture.

Key Advantages

• Industrial position switch with coil spring and cat's whisker actuator.
• Flexible actuator accommodates multidirectional machine movement.
• 3NC slow-action contacts provide three normally closed switching channels.
• B21 contact unit provides dependable electromechanical operation.
• Ideal where precise alignment with a conventional rigid actuator is difficult.
• Robust metal FZ-series enclosure for demanding industrial machinery.
• Two M20 × 1.5 threaded cable entries for metric industrial control wiring.
• IP67 environmental protection against dust and water ingress.

Key Features

• Pizzato FZ series position switch.
• Coil spring with cat's whisker actuator.
• 3 normally closed (3NC) contacts.
• B21 contact unit.
• L-type slow-action switching.
• Maximum actuator speed of 1 m/s.
• Actuating torque of 0.07 Nm.
• Flexible actuator suitable for multidirectional engagement.
• Durable painted metal enclosure.
• Two M20 × 1.5 threaded cable entries.
• IP67 protection according to EN 60529.

Reliable Position Detection for Industrial Machinery

Position switches such as the Pizzato FZ2121-M2 provide an electromechanical method of detecting moving machine components. When a component contacts the cat's whisker actuator, the flexible coil spring deflects and transfers movement to the internal B21 contact unit, changing the state of the three normally closed contacts and providing electrical signals to the associated machine control or monitoring system.

The flexible spring and whisker arrangement makes the FZ2121-M2 particularly useful where the actuating component may approach from different directions or where a rigid plunger would require precise alignment. Combined with its 3NC slow-action contact arrangement, robust metal enclosure, metric M20 cable entries and IP67 protection, the FZ2121-M2 provides dependable mechanical detection for industrial automation and machinery applications.

Typical Applications

• Industrial machinery position and presence detection.
• Conveyor and material handling systems.
• Packaging and production machinery.
• Moving-component and overtravel detection.
• Mechanical sequencing and machine-control systems.
• Automated manufacturing and assembly equipment.