Finder 7H.51.8.230.0400 – 7H Series Panel Heaters

Why Choose the Finder 7H.51.8.230.0400 Fan-Assisted Enclosure Heater?

The Finder 7H.51.8.230.0400 is a compact and reliable 400 W fan-assisted PTC enclosure heater designed to prevent condensation and maintain suitable operating temperatures inside electrical control cabinets, automation panels and industrial equipment enclosures. As part of the Finder Series 7H industrial thermoregulation range, this heater combines self-regulating heating technology with forced-air circulation to provide dependable thermal management for sensitive electrical and electronic components.

Featuring a PTC (Positive Temperature Coefficient) self-regulating heating element and an integrated circulation fan, the Finder 7H.51.8.230.0400 distributes warm air throughout electrical enclosures to help minimise cold spots, reduce condensation formation and protect equipment against moisture-related problems. Its aluminium heating profile is enclosed within a protective plastic housing, providing a compact and robust construction suitable for demanding industrial applications.

With a rated heating power of 400 W, a 230 V AC, 50/60 Hz supply and an integrated fan delivering approximately 30 m³/h airflow, this enclosure heater provides effective forced-air heating for industrial electrical cabinets. Its 35 mm DIN rail mounting, fast wiring terminals and compact dimensions make installation straightforward, while its wide operating temperature range of −40 to +50 °C supports reliable operation in challenging environments.

Key Advantages

• Compact 400 W fan-assisted enclosure heater designed for industrial electrical cabinets.
• 230 V AC supply compatible with industrial electrical control systems.
• PTC self-regulating heating technology automatically adjusts heating behaviour as the element temperature changes.
• Integrated circulation fan improves heat distribution throughout electrical enclosures.
• 30 m³/h airflow capacity supports effective warm-air circulation.
• Condensation prevention helps protect electrical and electronic components against moisture-related damage.
• Wide −40 to +50 °C operating temperature range for demanding industrial environments.
• IP20 protection rating for installation inside suitable electrical enclosures.
• Safe-touch protective housing helps reduce the risk of accidental contact with the heating element.
• 35 mm DIN rail mounting enables fast installation inside control panels.
• Fast wiring terminals simplify electrical connections and reduce installation time.
• Independent heater and fan supply terminals provide flexibility for thermostat-controlled heating applications.

Key Features

• Finder Series 7H industrial enclosure heater.
• 400 W rated heating power.
• 230 V AC nominal supply voltage.
• 50/60 Hz operating frequency.
• 184–253 V AC operating voltage range.
• 1.7 A nominal current.
• PTC self-regulating heating element.
• Integrated fan-assisted heating system.
• 30 m³/h nominal airflow.
• −40 to +50 °C operating temperature range.
• IP20 ingress protection rating.
• Aluminium heating profile enclosed in a protective plastic housing.
• Flame-retardant housing material for industrial electrical applications.
• Safe-touch construction with reduced external contact temperatures.
• 35 mm DIN rail mounting clip compliant with EN 60715.
• Fast wiring electrical terminals.
• Separate live terminals for the heater and fan allow independent electrical control.
• Compact enclosure-mounted design for electrical cabinets and automation panels.
• RoHS-compliant construction.

Reliable Condensation Prevention and Thermal Management for Electrical Enclosures

Industrial electrical enclosures are frequently exposed to fluctuating ambient temperatures, humidity and changing environmental conditions. When cabinet temperatures fall below the surrounding air's dew point, condensation can form on electrical terminals, circuit boards, contactors and other sensitive components. Moisture accumulation may lead to corrosion, insulation deterioration, electrical faults and reduced equipment reliability.

The Finder 7H.51.8.230.0400 fan-assisted PTC heater helps prevent these problems by raising and maintaining the internal temperature of electrical enclosures. Its 400 W self-regulating heating element generates heat, while the integrated fan circulates warm air throughout the cabinet. This forced-air heating arrangement promotes more uniform temperature distribution and helps reduce the formation of condensation on electrical equipment.

Unlike conventional fixed-resistance heating elements, the PTC self-regulating heating system increases its electrical resistance as its temperature rises, naturally limiting heat generation. This provides inherent temperature-dependent heating behaviour and supports reliable operation when used with suitable enclosure temperature controls.

The Finder Series 7H fan-assisted heaters also feature separate electrical supply terminals for the heating element and circulation fan. This allows the heater to be controlled by an external thermostat while providing the option of independent fan operation where required. The compact housing, DIN rail mounting clip and fast wiring terminals make the 7H.51.8.230.0400 particularly suitable for industrial automation cabinets and electrical panel installations where space, reliability and maintenance accessibility are important.

Typical Applications

• Industrial electrical control cabinets and distribution panels.
• PLC and industrial automation equipment enclosures.
• Variable frequency drive and motor control cabinets.
• Electrical enclosures exposed to low temperatures and high humidity.
• Outdoor electrical cabinets requiring internal condensation prevention.
• Industrial machinery and manufacturing equipment panels.
• Power distribution and electrical switching equipment.
• Road and tunnel lighting control cabinets.
• Hoists, cranes and material handling equipment enclosures.
• Automatic car wash electrical control systems.
• Plastic moulding machinery and industrial processing equipment.
• OEM machine building and electrical panel manufacturing.