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Pfannenberg Heaters FLH 250SL-UL 230V ACFLH 250SL-UL 230V AC
Pfannenberg 17025110007 FLH 250SL-UL enclosure fan heater, a 250 W 230 V AC heater designed to prevent condensation and protect industrial electrical cabinets.
Why Choose the Pfannenberg FLH 250SL-UL 230V AC Heater?
The Pfannenberg 17025110007 FLH 250SL-UL Heater is a compact and reliable electrical enclosure fan heater designed to prevent condensation, low temperatures and humidity-related failures inside industrial control cabinets. As part of the proven Pfannenberg FLH 250SL heater series, it provides efficient thermal protection for sensitive electrical and electronic components in demanding industrial environments.
The slim-line FLH 250SL design combines a powerful heating element with an integrated fan to support natural convection, ensuring fast and even heat distribution throughout the enclosure. Its compact construction makes it ideal for applications where installation space is limited while maintaining dependable cabinet temperature control.
With a rated heating output of 250 W and a supply voltage of 230 V AC, the Pfannenberg FLH 250SL-UL provides effective protection against condensation and excessive humidity in industrial electrical cabinets. The unit supports DIN rail or enclosure mounting solutions and is designed for reliable operation across a wide temperature range.
Key Advantages
- Compact slim-line enclosure fan heater for industrial control cabinets.
- 250 W heating output for effective cabinet temperature management.
- 230 V AC supply voltage suitable for industrial installations.
- Integrated fan provides rapid and even heat distribution.
- Helps prevent condensation, corrosion and moisture-related failures.
- Space-saving design for restricted cabinet installations.
- UL-approved version suitable for international industrial applications.
Key Features
- Pfannenberg FLH 250SL-UL slim-line fan heater.
- 250 W rated heating performance.
- 230 V AC rated voltage.
- Integrated fan-assisted heat distribution.
- IP20 protection rating.
- Aluminium profile housing design.
- Suitable for 35 mm DIN rail mounting applications.
- Plug terminal connection for straightforward installation.
- Designed for use with thermostats or hygrostats for controlled heating applications.
Reliable Heating for Industrial Enclosures
Electrical enclosure heaters such as the Pfannenberg FLH 250SL prevent condensation by maintaining a stable internal cabinet temperature. This protects sensitive electrical equipment from moisture damage, corrosion and potential electrical failures caused by changing environmental conditions.
The FLH slim-line series is designed for industrial engineers, machine builders and automation specialists who require dependable heating performance in compact control cabinets. Its integrated fan improves heat circulation, providing efficient thermal protection throughout the enclosure.
Typical Applications
- Industrial control cabinets.
- Automation and machine building systems.
- Electrical distribution enclosures.
- PLC and control equipment cabinets.
- Outdoor electrical enclosures requiring condensation prevention.
- Industrial systems exposed to temperature fluctuations.
Technical Specifications
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| IP Rating | IP20 | |
|---|---|---|
| Device Type | Fan heater | |
| Coil / Supply Voltage | 230 V AC | |
| Mounting Type | DIN rail | |
| External Size (mm) | 170.5 × 126.5 mm | |
| Voltage | 230 V AC | |
| Heating Output (W) | 250 W | |
| Manufacturer | Pfannenberg | |
| Model | FLH 250SL-UL | |
| Article number | 17025110007 | |
| Product type | Electrical enclosure fan heater | |
| Series | FLH 250SL | |
| Heating output | 250 W | |
| Rated voltage | 230 V AC | |
| Frequency | 50 / 60 Hz | |
| Functional voltage range | 207–258 V AC | |
| Maximum surface temperature | 70 °C | |
| Air flow | 160 m³/h | |
| Protection rating | IP20 | |
| Operating temperature | -40 °C to +70 °C | |
| Mounting type | Slim-line enclosure mounting / DIN rail compatible | |
| Connection type | Plug terminal connector | |
| Dimensions (H × W × D) | approx. 170.5 × 126.5 × 103 mm |
Frequently Asked Questions
What is the Pfannenberg FLH 250SL-UL heater used for?
The FLH 250SL-UL is used to prevent condensation and maintain suitable temperatures inside industrial electrical enclosures.
What heating power does the FLH 250SL-UL provide?
The heater provides a rated heating output of 250 W.
What voltage supply does the FLH 250SL-UL require?
The Pfannenberg FLH 250SL-UL operates from a 230 V AC supply.
Does the FLH 250SL-UL include a fan?
Yes, the heater includes an integrated fan to improve heat distribution inside the electrical enclosure.
Where is the FLH 250SL-UL typically installed?
The heater is typically installed inside industrial control cabinets and electrical enclosures where condensation prevention is required.
Trusted by Industrial Engineers Worldwide
Pfannenberg enclosure heating solutions are trusted by automation engineers and machine builders worldwide for reliable condensation prevention, efficient heat distribution and long-term industrial performance.
