Pizzato FR 33C4 is an IP67 technopolymer safety switch with a slotted hole lever, 1NO + 1NC slow-action contacts and positive opening for reliable mechanical position monitoring on industrial machinery.
£19.46
The Pizzato FR 33C4 is a robust safety switch with slotted hole lever designed for reliable mechanical position monitoring on industrial machinery, guards and moving mechanisms. As part of the established Pizzato FR safety switch series, it combines a compact technopolymer housing with a rotary slotted-hole lever actuator for dependable machine safety and automation applications.
The FR 33C4 incorporates a 1NO + 1NC slow-action contact configuration. The normally closed contact provides positive-opening operation for safety-related monitoring, while the normally open contact can provide auxiliary signalling. Its right-hand straight slotted lever provides a practical mechanical interface for detecting angular movement and position.
Designed for demanding industrial environments, the FR 33C4 features a technopolymer housing, IP67 protection and a single PG13.5 threaded cable entry. Its mechanically operated design provides repeatable position detection without requiring electronic sensing components, making it suitable for machine builders and industrial automation engineers.
Safety switches with slotted hole levers such as the Pizzato FR 33C4 detect the physical position or movement of machine guards and mechanical components through direct actuator operation. Angular movement applied to the lever operates the internal contacts, allowing an appropriately designed machine control or safety system to detect the position of the monitored mechanism.
The slotted lever arrangement is particularly useful where a direct mechanical connection is required between the safety switch and a rotating or hinged component. Combined with slow-action contacts, positive opening and robust FR-series construction, the FR 33C4 provides dependable electromechanical monitoring for industrial machinery.
| Manufacturer | Pizzato Elettrica |
|---|---|
| Series | FR Safety Switch Series |
| Model | FR 33C4 |
| Alternative SKU | FR33C4 |
| Product type | Safety switch with slotted hole lever |
| Actuator type | Slotted hole lever |
| Lever configuration | Right-hand straight lever |
| Contact configuration | 1NO + 1NC |
| Contact action | Slow action |
| Positive opening | Yes, NC contact |
| Housing material | Technopolymer |
| Protection rating | IP67 |
| Cable entry | PG13.5 |
| Number of cable entries | 1 |
| Operating principle | Mechanical |
| Actuating torque | 0.11 Nm |
| Barcode | 8018851067112 |
| Application | Machine safety and position monitoring |
| Standards family | EN / IEC 60947-5-1 |
| HS Code | 85369095 |
The FR 33C4 is used for mechanical safety and position monitoring of machine guards, hinged mechanisms and other moving components on industrial machinery.
The Pizzato FR 33C4 has a 1NO + 1NC slow-action contact configuration, providing one normally open contact and one normally closed safety contact.
The FR 33C4 uses a right-hand straight slotted hole lever designed to detect angular movement and the position of mechanically linked components.
The FR 33C4 has a single PG13.5 threaded cable entry. The corresponding FR 33C4-M2 execution uses an M20 × 1.5 entry instead.
The Pizzato FR 33C4 provides IP67 protection when correctly installed, making it suitable for industrial environments requiring protection against dust and water ingress.
Pizzato FR safety switches provide machine builders and automation engineers with robust electromechanical position monitoring, combining positive-opening safety contacts, versatile actuator configurations and durable industrial construction for dependable machinery applications.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...