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Pfannenberg Thermosats FLZ 520 THERMOSTAT -20..+40CFLZ 520 THERMOSTAT -20..+40C
Pfannenberg FLZ 520 enclosure thermostat with -20 °C to +40 °C temperature setting range and normally closed contact for industrial cabinet temperature control.
£10.94
Why Choose the Pfannenberg FLZ 520 Thermostat -20..+40C?
The Pfannenberg FLZ 520 Thermostat -20..+40C is a reliable electrical enclosure thermostat designed for automatic temperature regulation in industrial control cabinets. As part of the proven Pfannenberg FLZ thermostat series, it provides dependable switching control for enclosure heaters, filter fans and thermal management systems.
The FLZ 520 features a normally closed (N.C.) spring contact design, making it suitable for controlling electrical cabinet heaters. By maintaining appropriate enclosure temperatures, it helps prevent condensation, protects sensitive electrical components and improves the reliability of industrial automation equipment.
With an adjustable temperature range of -20 °C to +40 °C, the FLZ 520 provides precise thermal control for a wide range of industrial applications. Its compact DIN rail mounting design allows simple installation inside control cabinets while saving valuable enclosure space.
Key Advantages
- Compact industrial enclosure thermostat for electrical cabinets.
- -20 °C to +40 °C adjustable temperature range for flexible thermal control.
- Normally closed (N.C.) spring contact suitable for cabinet heaters.
- Mechanical switching design prevents interference from electromagnetic radiation.
- DIN rail mounting enables quick and simple installation.
- Helps reduce energy consumption by controlling heaters and fans only when required.
Key Features
- Pfannenberg FLZ 520 thermostat series.
- N.C. contact configuration with spring contact.
- Temperature setting range -20 °C to +40 °C.
- Suitable for controlling electrical cabinet heaters.
- Mechanical bimetal temperature sensing element.
- Switching temperature difference <7 K.
- Switching point tolerance ±4 K.
- 35 mm DIN rail snap mounting according to EN 60715.
Reliable Temperature Control for Electrical Enclosures
Electrical cabinet thermostats such as the Pfannenberg FLZ 520 provide automatic temperature regulation by switching connected thermal management equipment according to enclosure conditions. This helps maintain temperatures above the dew point and reduces the risk of condensation damage inside control cabinets.
The FLZ series is designed for industrial applications where reliable switching, easy installation and efficient thermal management are essential. When combined with enclosure heaters or filter fans, the thermostat helps optimise energy use and improve equipment reliability.
Typical Applications
- Industrial control cabinets and electrical enclosures.
- Cabinet heater temperature regulation.
- Automation and machine building systems.
- Protection against condensation in electrical cabinets.
- Switchgear and control panel installations.
- Industrial thermal management systems.
Technical Specifications
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| Contacts | 1NC | |
|---|---|---|
| Device Type | Thermostat | |
| Control Type | Thermostat | |
| Manufacturer | Pfannenberg | |
| Series | FLZ Thermostats | |
| Model | FLZ 520 Thermostat -20..+40C | |
| Article number | 17111000003 | |
| Product type | Electrical enclosure thermostat | |
| Contact type | Normally closed (N.C.) with spring contact | |
| Temperature setting range | -20 °C to +40 °C | |
| Switching temperature difference | <7 K | |
| Switching point tolerance | ±4 K | |
| Maximum switching capacity | 240 V AC / 10 A (2 A inductive) | |
| DC switching capacity | max. 30 W | |
| Mounting type | 35 mm DIN rail snap mounting | |
| Connection type | Screw terminals | |
| Terminal cross-section | 0.5–2.5 mm² | |
| Protection rating | IP20 | |
| Operating temperature | -40 °C to +80 °C | |
| Colour | RAL 7035 | |
| Dimensions (H × W × D) | 72 × 40 × 36 mm | |
| Weight | approx. 50 g |
Frequently Asked Questions
What is the Pfannenberg FLZ 520 thermostat used for?
The FLZ 520 is used to regulate temperatures inside electrical enclosures and control cabinet heaters.
What temperature range does the FLZ 520 support?
The thermostat supports an adjustable temperature range of -20 °C to +40 °C.
Is the FLZ 520 normally open or normally closed?
The FLZ 520 uses a normally closed (N.C.) spring contact configuration suitable for controlling heaters.
How is the FLZ 520 installed?
The thermostat is designed for snap mounting on a 35 mm DIN rail according to EN 60715.
What protection rating does this thermostat provide?
The FLZ 520 provides IP20 protection for installation inside electrical cabinets.
Trusted by Industrial Engineers Worldwide
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.
