Pfannenberg FLZ 520 enclosure thermostat with 0 °C to +60 °C temperature setting range and normally closed contact for industrial cabinet heater control.
The Pfannenberg FLZ 520 Thermostat 0..+60C is a reliable electrical enclosure thermostat designed for automatic temperature regulation in industrial control cabinets. As part of the trusted Pfannenberg FLZ 520 thermostat series, it provides dependable switching control for enclosure heaters and thermal management systems used in industrial automation applications.
The FLZ 520 features a normally closed (N.C.) spring contact design, making it suitable for controlling electrical cabinet heaters. By maintaining suitable enclosure temperatures, it helps prevent condensation, protects sensitive electrical components and improves the reliability of industrial control equipment.
With an adjustable temperature range of 0 °C to +60 °C, the FLZ 520 provides accurate thermal switching for a wide range of industrial applications. Its compact DIN rail mounting design enables quick installation inside electrical cabinets while saving valuable enclosure space.
Electrical cabinet thermostats such as the Pfannenberg FLZ 520 provide automatic switching control for thermal management equipment. When combined with enclosure heaters, they help maintain suitable cabinet temperatures, reduce condensation risks and support reliable operation of electrical systems.
The FLZ thermostat series is designed for industrial environments where dependable switching, easy installation and efficient thermal management are essential. The mechanical spring contact design provides reliable operation for heaters and filter fan control applications.
| Manufacturer | Pfannenberg |
|---|---|
| Series | FLZ 500 Thermostats |
| Model | FLZ 520 Thermostat 0..+60C |
| Article number | 17111001000 |
| Product type | Electrical enclosure thermostat |
| Contact type | Normally closed (N.C.) with spring contact |
| Temperature setting range | 0 °C to +60 °C |
| Switching temperature difference | <7 K |
| Switching point tolerance | ±4 K |
| Maximum switching capacity | 240 V AC / 10 A |
| Inductive load rating | 2 A at cos φ = 0.6 |
| DC switching capacity | max. 30 W |
| Mounting type | 35 mm DIN rail snap mounting |
| Connection type | Screw terminal |
| Terminal cross-section | 0.5–2.5 mm² |
| Protection rating | IP20 |
| Operating temperature | -40 °C to +80 °C |
| Probe type | Bimetal |
| Colour | RAL 7035 |
| Dimensions (H × W × D) | 72 × 40 × 36 mm |
| Weight | approx. 50 g |
The FLZ 520 is used to regulate temperatures inside electrical enclosures and control cabinet heaters.
The thermostat supports an adjustable temperature range of 0 °C to +60 °C.
The FLZ 520 uses a normally closed (N.C.) spring contact configuration suitable for controlling heaters.
The thermostat is designed for snap mounting on a 35 mm DIN rail according to EN 60715.
The FLZ 520 provides IP20 protection for installation inside electrical cabinets.
Pfannenberg FLZ thermostats are widely used by automation engineers and panel builders to provide reliable temperature control, protect electrical components and improve the efficiency of industrial enclosure thermal management systems.
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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...