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FK 3393-X Pizzato Safety switch with separate actuator
Pizzato FK 3393-X is a compact separate-actuator safety switch with 1NO + 1NC slow-action contacts, positive opening, stainless steel external metallic parts and IP67/IP69K protection for industrial machine guard monitoring.
£16.35
Why Choose the Pizzato FK 3393-X Safety Switch?
The Pizzato FK 3393-X is a compact and robust safety switch with separate actuator designed for monitoring movable guards, doors and access points on industrial machinery. As part of the Pizzato FK series, it combines a durable technopolymer housing, positive-opening safety contacts and a separate actuator head for dependable machine safety applications.
This model features a 1NO + 1NC slow-action contact block, allowing the switch to provide both normally open and normally closed signalling within machine control and safety circuits. The positive-opening normally closed contact provides mechanically forced contact separation, supporting reliable guard monitoring in safety-related applications.
The FK 3393-X version is distinguished by its external metallic parts in stainless steel, providing increased resistance to corrosion in demanding industrial environments. With IP67 and IP69K protection, a compact glass fibre reinforced technopolymer enclosure and a separate actuator arrangement, it is well suited to industrial machinery where reliable guard-position detection is required.
Key Advantages
- Compact safety switch with separate actuator for machine guard monitoring.
- 1NO + 1NC slow-action contacts for safety and control signalling.
- Positive-opening NC contact for dependable safety circuit operation.
- Stainless steel external metallic parts provide enhanced corrosion resistance.
- IP67 and IP69K protection for demanding industrial environments.
- Compact technopolymer housing simplifies installation where panel and machine space is limited.
Key Features
- Pizzato FK series safety switch.
- Separate actuator safety operation.
- 1NO + 1NC slow-action contact block.
- Positive-opening safety contact.
- Glass fibre reinforced technopolymer housing.
- Stainless steel external metallic parts.
- One threaded PG 11 conduit entry.
- IP67 protection according to EN 60529.
- IP69K protection according to ISO 20653.
- Designed for movable machine guard and safety access monitoring.
Reliable Machine Guard Monitoring
Safety switches with separate actuators such as the Pizzato FK series are designed to detect whether a movable machine guard is correctly positioned. The actuator is mounted to the movable guard while the switch body is mounted to the fixed machine structure, allowing the safety control system to monitor guard position as the actuator enters or leaves the switch head.
The FK 3393-X combines slow-action switching with positive opening of the safety contact, helping provide reliable electrical signalling when a guard is opened. Unlike a guard-locking switch, the FK 3393-X monitors guard position without mechanically locking the actuator, making it suitable for applications where guard locking is not required by the machine risk assessment.
Typical Applications
- Machine guard doors and safety access panels.
- Automated production and assembly machinery.
- Packaging and processing equipment.
- Robotic cells and enclosed automation systems.
- Conveyor and material handling equipment.
- Industrial machinery requiring reliable movable-guard position monitoring.
Technical Specifications
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| Housing Material | Technopolymer | |
|---|---|---|
| Device Type | Guard-locking switch | |
| Product Series | Pizzato FK | |
| Contacts | 1NO + 1NC | |
| IP Rating | IP67, IP69K | |
| Safety Switch Type | Tongue interlock | |
| Manufacturer | Pizzato Elettrica | |
| Series | FK | |
| Model | FK 3393-X | |
| Alternative SKU | FK3393-X | |
| Product type | Safety switch with separate actuator | |
| Contact block | B33 | |
| Contact configuration | 1NO + 1NC | |
| Contact operation | Slow action | |
| Positive opening | Yes | |
| Housing material | Glass fibre reinforced technopolymer | |
| External metallic parts | Stainless steel | |
| Conduit entry | 1 × PG 11 threaded entry | |
| Protection rating | IP67 according to EN 60529 / IP69K according to ISO 20653 | |
| Actuator arrangement | Separate actuator | |
| Actuator | Not included | |
| Standard actuator extraction force | 10 N | |
| Ambient temperature | -25 °C to +80 °C | |
| Application | Machine guard and safety access monitoring | |
| HS Code | 85369095 |
Frequently Asked Questions
What is the Pizzato FK 3393-X used for?
The FK 3393-X is used to monitor the position of movable machine guards, doors and access panels, allowing a machine safety system to detect when a guard is opened or closed.
What contact configuration does the FK 3393-X provide?
The switch uses a 1NO + 1NC slow-action B33 contact block, providing one normally open and one normally closed contact.
Does the Pizzato FK 3393-X have positive-opening contacts?
Yes. The switch incorporates positive-opening operation, providing mechanically forced opening of the safety contact for dependable guard monitoring.
What does the X option mean on the FK 3393-X?
The X option specifies stainless steel external metallic parts, providing increased resistance to corrosion compared with the standard zinc-plated steel configuration.
Does the Pizzato FK 3393-X lock the machine guard?
No. The FK 3393-X is a separate-actuator safety switch for guard-position monitoring and does not mechanically lock the actuator. Applications requiring guard locking should use an appropriate Pizzato safety switch specifically designed with a locking mechanism.
Trusted for Industrial Machine Safety
Pizzato FK series safety switches provide compact and dependable movable-guard monitoring for industrial machinery, combining positive-opening safety contacts, robust technopolymer construction and flexible separate-actuator operation.
