Pfannenberg FLH 050-LST 50W 110-250AC cabinet heater designed to prevent condensation and maintain reliable temperatures inside industrial electrical enclosures.
£57.40
The Pfannenberg 17005105007 FLH 050-LST 50W 110-250AC is a compact surface temperature-limited radiant heater designed to prevent condensation, excessive humidity and low temperatures inside industrial electrical cabinets and enclosures. As part of the reliable Pfannenberg FLH LST heater series, it provides efficient cabinet heating using proven radiant heating technology for dependable thermal management.
The FLH 050-LST combines a robust aluminium profile construction, compact dimensions and limited surface temperature operation to provide safe and reliable heating where accidental contact with cabinet heaters may be possible. Its fanless design ensures quiet operation with minimal maintenance requirements.
With a 50 W heating output, a 110–250 V AC operating range and compact dimensions of 70 mm × 60 mm × 177 mm, the Pfannenberg FLH 050-LST is suitable for protecting electrical cabinets, automation enclosures and sensitive electronic components against condensation and cold-related failures.
Low temperatures and humidity inside electrical enclosures can create condensation, corrosion and reduced reliability of sensitive components. The Pfannenberg FLH 050-LST heater maintains suitable cabinet conditions by providing controlled radiant heat to prevent moisture-related problems.
The FLH LST series is designed for industrial automation engineers, panel builders and machine manufacturers requiring safe, compact and dependable enclosure heating solutions. Its DIN rail mounting, PTC technology and flexible voltage range allow straightforward integration into modern control systems.
| Manufacturer | Pfannenberg |
|---|---|
| Series | FLH LST Surface Temperature-Limited Radiant Heaters |
| Model | FLH 050-LST 50W 110-250AC |
| Part number | 17005105007 |
| Product type | Electrical cabinet radiant heater |
| Heating performance | 50 W |
| Rated voltage | 110–250 V AC |
| Frequency | 50 / 60 Hz |
| Maximum surface temperature | 55 °C |
| Operating temperature | -40...+70 °C |
| Protection rating | IP44 with connecting cable / IP20 with plug terminal connector |
| Protection class | I |
| Housing material | Bright anodised aluminium profile |
| Mounting type | Snap fastening for 35 mm DIN rail |
| Dimensions (H × W × D) | 70 × 60 × 177 mm |
| Weight | approx. 0.77 kg |
The Pfannenberg FLH 050-LST is used to heat electrical cabinets and prevent condensation, humidity and low-temperature issues affecting electronic components.
The heater provides a 50 W heating output.
The heater operates across a 110–250 V AC supply range at 50 / 60 Hz.
The FLH 050-LST has a limited maximum surface temperature of approximately 55 °C.
The FLH 050-LST uses a snap fastening system for 35 mm DIN rails according to EN 60715.
Pfannenberg FLH heaters are widely used by control panel builders and automation engineers to prevent condensation, protect electronics and maintain reliable enclosure conditions.
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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...