Panel Heaters Selection Guide: Technical Criteria & Application Standards
Panel Heaters selection guide: technical parameters, mounting and compliance standards, and Schneider Electric comparison.
A panel heater is an electric heater mounted inside a panel that gently warms the air inside to reduce condensation and moisture formation. It is used in automation panels, outdoor cabinets and panels in cold or damp environments. Choose the heater power according to the panel volume, the size according to the available space and the voltage according to the supply, and check the connection type. Mutlusan PTC heaters are available from 15 W to 150 W, fan models from 100 W to 400 W, and the 250 W fan model has a resistance heating element. Slim models suit narrow cabinets with their thin 27 mm housing. The supply is given as 230 V AC 50/60 Hz or 100-250 V AC-DC, and the connection is made by cable or terminal block. Because of the IP20 protection rating, it should be mounted only inside a closed panel. As power increases, the heat produced by the heater and its housing size grow, so a high-power model in a small cabinet may cause overheating. A panel heater is not a room heater and does not replace panel fans or ventilation products. The Panel Heaters category on Welibaba includes 14 active models from leading manufacturers such as Schneider Electric.
Key Technical Parameters for Selecting Panel Heaters
To specify the right Panel Heaters model for your panel or installation, verify the following parameters against your engineering schedule:
| Parameter | Typical Catalog Values | Verification Note |
|---|---|---|
| Depth | 100 mm, 215 mm, 65 mm, 70 mm | Verify against project schedule and load calculation |
| Input Voltage | 110…250 V AC 50/60 Hz, 120…240 V AC 50/60 Hz, 230 V AC 50/60 Hz | Verify against project schedule and load calculation |
| Width | 100 mm, 105 mm, 155 mm, 80 mm | Verify against project schedule and load calculation |
| IP Rating | IP20 | Verify against project schedule and load calculation |
Installation, Compatibility, and Commissioning Checklist
- Electrical & Mechanical Matching: Confirm that rated voltage, current capacity, and mounting dimensions align with the upstream and downstream components in Panels and Equipment.
- Environmental & Enclosure Rating: Check IP protection class, housing material, and terminal capacity for dusty, humid, or high-vibration industrial environments.
- Related Product Groups: If your application calls for a different form factor or rating, compare sibling categories such as Empty Combination Boxes, Junction and Combination Box Accessories, Panel Accessories.
Frequently Asked Questions
What is the first parameter to check when selecting Panel Heaters?
Start by confirming the circuit's rated electrical values and physical mounting dimensions, then use the technical attribute filters on the Panel Heaters page to narrow down compatible series.
Which Panel Heaters brands are available on Welibaba?
Welibaba currently stocks 14 active models in this category from manufacturers including Schneider Electric, complete with verified specifications and unit pricing.
How can I compare Panel Heaters models by manufacturer part number?
You can search directly by manufacturer SKU/order code or use the category filter panel to compare equivalent models across brands side by side.