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FR 21A7 Pizzato Position switch with one-way roller adjustable, external gasket
Pizzato FR21A7 safety limit switch with 3NC contacts, adjustable one-way roller actuator and IP67 housing for industrial automation and safety applications.
£12.33
Why Choose the Pizzato FR21A7 Safety Limit Switch?
The Pizzato FR21A7 is a heavy-duty safety limit switch designed for accurate position detection and dependable machine safety monitoring in industrial automation systems. As part of the robust Pizzato FR series, this model is engineered for consistent performance in demanding environments where durability and safety are critical.
This switch features an adjustable one-way roller actuator and a rugged technopolymer housing, ensuring reliable operation under mechanical stress. Its slow-action switching mechanism provides stable and controlled contact operation, making it suitable for both safety circuits and industrial control applications.
With a 3NC contact configuration, the FR21A7 is particularly suited for safety systems requiring high redundancy and fail-safe operation. This makes it ideal for applications where reliable disconnection is essential to protect operators and machinery.
Key Advantages
- Reliable safety limit switch for industrial automation.
- 3 normally closed (NC) contacts for maximum safety redundancy.
- Adjustable one-way roller actuator for directional detection.
- Durable technopolymer housing for harsh environments.
- Stable slow-action switching for precise control.
- High protection rating ensures long-term reliability.
Key Features
- Pizzato FR series position switch.
- Model: FR21A7
- Contact configuration: 3NC (normally closed).
- Switching type: Slow-action contacts.
- Actuator type: Adjustable one-way roller.
- Housing: Technopolymer with external gasket.
- Connection: PG13.5 conduit entry.
- Contact material: Silver contacts for durability.
Reliable Position Detection for Industrial Safety
The Pizzato FR21A7 is designed to monitor mechanical movement and ensure safe machine operation by providing accurate feedback signals. Its adjustable roller actuator ensures consistent triggering in one direction, making it ideal for conveyors, automated systems and machine guarding applications.
The triple normally closed contacts provide enhanced fail-safe functionality, ensuring that faults or disconnections are detected quickly. This improves operator safety and supports compliance with industrial safety standards.
Typical Applications
- Machine guarding and safety interlock systems.
- Industrial conveyors and material handling equipment.
- Position detection for moving mechanical components.
- Packaging and processing machinery.
- Automation and production systems.
- OEM machine building and safety integration.
Technical Specifications
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| Device Type | Limit switch | |
|---|---|---|
| Housing Material | Technopolymer | |
| IP Rating | IP67 | |
| Contacts | 3NC | |
| Actuator Type | Roller lever | |
| Connection | PG13.5 cable entry | |
| Series | FR Position Switches | |
| Product type | Safety limit / position switch | |
| Contact configuration | 3NC | |
| Rated current | up to 10 A | |
| Rated voltage | up to 250 V AC | |
| Switching mechanism | Slow-action | |
| Actuator | Adjustable one-way roller | |
| Housing material | Technopolymer | |
| Conduit entry | PG13.5 | |
| Protection rating | IP67 | |
| Operating temperature | approx. −25 to +80 °C | |
| Dimensions | approx. 51.5 × 30.8 × 30.8 mm | |
| HS Code | 85369095 |
Frequently Asked Questions
What is the Pizzato FR21A7 used for?
This switch is used for position detection and safety monitoring in industrial machinery, especially where high redundancy is required.
What contact configuration does this switch have?
The FR21A7 features 3 normally closed (NC) contacts for enhanced safety applications.
What type of actuator is included?
It uses an adjustable one-way roller actuator, ideal for directional movement detection.
Is this suitable for safety circuits?
Yes, the triple NC contacts provide maximum redundancy, making it ideal for safety-critical applications.
What protection rating does it have?
The switch has an IP67 protection rating, making it suitable for harsh industrial environments.
Trusted by Industrial Automation Professionals
Pizzato FR series limit switches are widely trusted across industrial automation for delivering reliable performance, precise switching and long-term durability in safety-critical applications.
