Pfannenberg FLH 020-LST 17002105007 is a 20 W surface temperature-limited PTC radiant enclosure heater with a 110–250 V AC functional range, designed to help prevent condensation, excessive humidity and low temperatures in electrical control cabinets.
£28.66
The Pfannenberg FLH 020-LST 17002105007 is a compact 20 W surface temperature-limited PTC radiant heater designed for reliable thermal management inside electrical control cabinets and enclosures. As part of the Pfannenberg FLH LST radiant heater series, it combines dependable enclosure heating with a limited radiator surface temperature for applications where additional protection against high surface temperatures is required.
This fanless heater uses PTC heating technology to provide rapid heating that helps prevent excessively low cabinet temperatures, high relative humidity and condensation. The surface temperature-limited design is particularly useful in building installations, applications where accidental contact with the heater is possible, and installations where neighbouring components could be affected by excessive heat.
With a heating performance of 20 W, a rated voltage of 230 V AC and a wide 110–250 V AC, 50 / 60 Hz functional range, the FLH 020-LST offers flexible integration into industrial electrical systems. Integrated snap fastening enables straightforward installation on a 35 mm DIN rail, while this 17002105007 version uses a plug terminal connector for convenient electrical connection.
Radiant enclosure heaters help maintain appropriate internal cabinet conditions when electrical equipment is exposed to low temperatures or changing humidity. The Pfannenberg FLH 020-LST uses PTC heating technology to raise the enclosure temperature quickly, helping reduce the likelihood of condensation forming on sensitive electrical and electronic components.
The FLH LST series additionally limits radiator surface temperature, making it suitable for installations where accidental contact may occur, where safety requirements restrict open sources of heat or where nearby structural elements could be adversely affected by higher temperatures. Its compact, fanless construction and DIN-rail mounting system make it practical for industrial control cabinets and building installations.
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| IP Rating | IP20 | |
|---|---|---|
| Coil / Supply Voltage | 230 V AC | |
| Heating Element Type | PTC semiconductor | |
| Mounting Type | DIN rail | |
| External Size (mm) | 70 × 60 mm | |
| Device Type | Fan heater | |
| Voltage | 110-250 V AC | |
| Heating Output (W) | 20 W | |
| HS Code | 85168020 | |
| Manufacturer | Pfannenberg | |
| Series | FLH LST Surface Temperature-Limited Radiant Heaters | |
| Model | FLH 020-LST | |
| Article number / MPN | 17002105007 | |
| Product type | Surface temperature-limited PTC radiant enclosure heater | |
| Heating performance | 20 W | |
| Rated voltage | 230 V AC ±10% | |
| Functional voltage range | 110–250 V AC | |
| Rated frequency | 50 / 60 Hz | |
| Maximum starting current | 1.1 A | |
| Maximum surface temperature | 55 °C | |
| Operating temperature | −40 to +70 °C | |
| Storage temperature | −40 to +70 °C | |
| Protection rating | IP20 | |
| Heating technology | PTC | |
| Fan | No | |
| Connection type | Plug terminal connector | |
| Mounting type | Snap fastening for 35 mm DIN rail according to EN 60715 | |
| Dimensions (H × W × D) | 70 × 60 × 132 mm |
The FLH 020-LST is a 20 W surface temperature-limited radiant enclosure heater designed to help prevent excessively low temperatures, excessive relative humidity and condensation inside electrical control cabinets.
The Pfannenberg FLH 020-LST provides a heating performance of 20 W at an ambient temperature of +20 °C.
The heater has a rated voltage of 230 V AC ±10% and a functional range of 110–250 V AC at 50 / 60 Hz.
The FLH 020-LST has a maximum surface temperature of 55 °C when the maximum internal enclosure temperature is +35 °C, providing additional protection in applications where high heater surface temperatures are undesirable.
The heater features integrated snap fastening for installation on a 35 mm DIN rail according to EN 60715 and this 17002105007 version uses a plug terminal connector for electrical connection.
Pfannenberg FLH LST radiant heaters provide dependable enclosure heating with limited surface temperatures, helping protect electrical equipment against low temperatures, excessive humidity and condensation while supporting safer installation in temperature-sensitive applications.
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