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FR 21A4 Pizzato Position switch with plunger, external gasket and roller
Pizzato FR21A4 industrial limit switch with plunger roller actuator, 3NC contacts and IP67 protection for reliable position detection in automation systems.
£11.78
Why Choose the Pizzato FR21A4 Limit Switch?
The Pizzato FR21A4 is a heavy-duty industrial limit switch designed for precise position detection in demanding automation and machinery applications. As part of the rugged Pizzato FR series, it provides dependable switching performance where durability, reliability and electrical capacity are essential.
This model features a plunger actuator with external gasket and roller, ensuring smooth actuation and reduced mechanical wear during repeated operation. It is particularly suited to conveyor systems, end-of-travel detection and high-cycle industrial environments requiring consistent triggering.
Constructed with a durable technopolymer housing and industrial-grade internal components, the FR21A4 offers excellent resistance to dust, moisture and vibration. Its robust design ensures long service life and reliable operation in harsh industrial conditions.
Key Advantages
- Reliable limit switch for industrial automation.
- Plunger with roller actuator for smooth, low-wear operation.
- Durable construction suitable for harsh industrial environments.
- 3 normally closed contacts for safety-oriented control circuits.
- No reset mechanism for direct return operation.
- High mechanical endurance for continuous switching cycles.
Key Features
- Pizzato FR series position switch.
- 3 normally closed (NC) contacts.
- Slow-action switching mechanism.
- Plunger actuator with external gasket and roller.
- Technopolymer housing with zinc-plated steel components.
- Silver contacts for stable electrical performance.
- PG13.5 cable entry (no cable gland supplied).
- IP67 protection rating for dust and water resistance.
Reliable Position Detection for Industrial Machinery
The Pizzato FR21A4 is designed to detect mechanical movement and provide accurate switching signals to control systems. Its roller plunger actuator ensures smooth engagement with moving components, reducing wear and improving long-term operational reliability.
Pizzato FR series limit switches are widely used across industrial automation due to their robust construction, actuator flexibility and consistent performance in demanding environments.
Typical Applications
- Heavy-duty conveyor and material handling systems.
- End-of-travel detection in industrial machinery.
- Packaging and processing equipment.
- Automated production lines.
- Machine safety and monitoring systems.
- OEM machinery and automation equipment.
Technical Specifications
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| Device Type | Limit switch | |
|---|---|---|
| Housing Material | Technopolymer | |
| Switching Action | Slow action | |
| IP Rating | IP67 | |
| Contacts | 3NC | |
| Actuator Type | Roller plunger | |
| Connection | PG13.5 cable entry | |
| Series | FR Series | |
| Product type | Limit / position switch | |
| Contact configuration | 3 NC | |
| Contact type | Slow action | |
| Rated current | up to 10 A | |
| Rated voltage | up to 250 V AC | |
| Actuator type | Plunger with roller and external gasket | |
| Housing material | Technopolymer | |
| Protection rating | IP67 | |
| Cable entry | PG13.5 | |
| Operating temperature | approx. −25 to +80 °C | |
| Dimensions | approx. 51.5 × 30.8 × 30.8 mm | |
| Reset function | None | |
| HS Code | 85369095 |
Frequently Asked Questions
What is the Pizzato FR21A4 used for?
This limit switch is used for position detection and control in industrial machinery and automation systems.
What contact configuration does it have?
It features 3 normally closed contacts, ideal for safety circuits and redundant control systems.
What type of actuator does this model use?
It uses a plunger actuator with roller, ensuring smooth and consistent actuation.
Is it suitable for harsh environments?
Yes, the IP67 protection rating ensures reliable operation in dusty and wet industrial conditions.
What electrical ratings does it support?
It supports currents up to 10 A and voltages up to 250 V AC.
Trusted by Industrial Engineers Worldwide
Pizzato FR series limit switches are trusted across industrial sectors for their durability, precision and reliable performance in automation and machine control applications.
