Kruger exhaust fan specifications vary by series, but general characteristics include a range of sizes (from 140 mm to 2000 mm), air capacities (up to 315,000 m3/h), and total pressure (up to 1000 Pa). Many models feature Class F insulation and IP54 protection for the motor, with standard starting methods being DOL for motors up to 2.2kW and star/delta for 3.0kW and above. Specifications also include a choice of construction materials, coatings, and accessories like impellers, duct flanges, and vibration isolators. 

General specifications

Size: Varies by model, ranging from from 140 mm to 2000 mm.

Capacity: Varies by model, with some reaching up to 315,000 m3/h.

Pressure: Can generate total pressure up to 1000 Pa.

Motor: Totally Enclosed Fan Cooled (TEFC) with Class “F” insulation and IP54 protection are standard on many models. Motors up to 2.2kW typically use DOL starting. Motors 3.0kW and above typically use star/delta starting.

Construction:

• Impellers are often made from PPG, PAG, or aluminum alloy.
• Casings are made from mild steel or galvanized steel.

Coatings: Available in zinc-rich primer with polyester powder coating or galvanized finishing.

Balancing: Impellers are statically and dynamically balanced to ISO1940 and AMCA204 – G2.5 standards. 

Examples of specific series

• RDA Series (Direct Driven Axial): Sizes from 400 to 1400 mm, capacities up to 150,000 𝑚3/ℎ and total pressure up to 1000 Pa.
• RCU Series (Roof Exhaust): Sizes from 315 to 1000 mm, capacities up to 40,000 𝑚3/ℎ and static pressure up to 600 Pa.
• TBE Series (Belt Driven Axial): Sizes from 315 to 2000 mm, capacities up to 315,000 𝑚3/ℎ and static pressure up to 1000Pa.
• CCE Series (In-line Centrifugal): Sizes from 140 mm to 18 inches, capacities up to 18,000 𝑚3/ℎ and static pressure up to 1000 Pa.
• CFK Series (Inline Cabinet): Sizes from 315 to 1000 mm, with airflow performance up to 100,000 m3/ℎ and static pressure up to 1500 Pa.