A panel heater is an electrical device designed to raise and stabilize the temperature inside enclosures, such as industrial control panels, switchgear, or IT cabinet systems. Its primary job is to prevent condensation, maintain humidity at safe levels, and protect electronics from environmental damage. Panel heaters work by converting electrical energy into thermal energy, typically via PTC (Positive Temperature Coefficient) heating elements that provide consistent heat output.

Features of Rittal SK3105.330

The Rittal SK3105.330 enclosure heater is engineered for efficient control of internal cabinet conditions. Its technical specifications include:

  • Thermal output: 23–30 W at 10°C, suitable for compact and medium-sized enclosures.
  • Rated voltage: 110–240 V AC, adaptable for global installations.
  • Dimensions: 64 × 155 × 56 mm, ideal for space-constrained panels.
  • Material: Anodized aluminum for corrosion resistance and durability.
  • Operating temperature range: −33°C to +65°C, applicable for wide ambient conditions.
  • Safety features: IP20 protection (dust-proof; finger-safe), all-insulated design (Protection Class II), and a recommended 4A fuse/circuit breaker.
  • Quick-connection terminal for rapid and secure installation.

Why Are Panel Heaters Essential in Industrial Applications?

Panel heaters like the SK3105.330 are indispensable for several reasons:

  • Condensation Prevention: They maintain the enclosure temperature above dew point, stopping moisture buildup that could lead to corrosion or electrical shorts.
  • Reliable Operations: Ensuring stable temperature and humidity maximizes the uptime of critical electronics and automation systems by reducing risks of failure.
  • Protection Against Extreme Conditions: In cold or humid environments, heaters prevent freezing and safeguard sensitive components, essential for outdoor or unheated settings.
  • Extended Equipment Life: Minimizing exposure to condensation and temperature shocks prolongs the lifespan of PLCs, relays, circuit boards, and communication modules.

Usage Tips and Best Practices

  • For optimal performance, install a thermostat for automatic temperature regulation or a hygrostat for precise humidity control.
  • Larger enclosures may require multiple low-output heaters for even heat distribution.
  • Always ensure safety compliance by using appropriate protection devices per manufacturer recommendations.