Why Choose the ABB VA7930 AM2 Anti-Condensation Heater?
The ABB VA7930 is a compact 30 W anti-condensation heater designed to help prevent condensation inside electrical cabinets and switchboards. Specified by ABB as AM2 Anti-condensation Heater 30W, it uses a PTC thermistor heating element to provide reliable enclosure temperature management in industrial electrical installations.
The heater incorporates a PTC thermistor in an aluminium-alloy base. This self-regulating PTC technology changes its impedance according to operating temperature, helping provide stable heating performance while protecting sensitive electrical and electronic equipment from moisture caused by condensation.
With a rated power of 30 W, a 110–240 V AC/DC supply and compact dimensions of approximately 115 × 42 × 42 mm (H × W × D), the VA7930 is designed for snap-on mounting to a 35 mm DIN rail. ABB specifies it for IP20 electrical switchboards and requires the heater to be used with a thermostat.
Key Advantages
- Compact 30 W anti-condensation heater for electrical cabinets.
- Wide 110–240 V AC/DC operating supply.
- PTC thermistor heating technology provides inherently stable operation.
- Helps prevent condensation and moisture accumulation inside electrical enclosures.
- Compact 115 × 42 × 42 mm format.
- Convenient snap-on installation onto a 35 mm DIN rail.
Key Features
- ABB AM2 anti-condensation heater.
- 30 W rated heating power.
- 110–240 V AC/DC supply voltage.
- Self-regulating PTC thermistor heating element.
- Aluminium-alloy base designed for efficient thermal exchange.
- Designed for IP20 electrical switchboards.
- 35 mm DIN-rail snap-on mounting.
- Designed for operation with a thermostat.
Reliable Condensation Control for Electrical Cabinets
Condensation can form inside electrical enclosures when temperature changes cause moisture in the surrounding air to collect on internal surfaces and components. An enclosure heater raises the internal temperature to help reduce condensation, supporting reliable operation of electrical and electronic equipment in environments where moisture is a concern.
The ABB VA7930 uses PTC technology whose electrical characteristics respond to operating temperature. Combined with its aluminium-alloy base and compact DIN-rail mounting format, this makes the heater a practical temperature-management accessory for compatible industrial switchboards and electrical cabinets.
Typical Applications
- ABB AM2 electrical cabinets.
- Industrial control and automation panels.
- Electrical distribution switchboards.
- Machine control cabinets.
- Enclosures exposed to temperature variations and condensation risk.
- Industrial electrical and electronic equipment protection.
