ERV-49M w/motor AIR 63 A2 0.37 kW 3000 rpm

ERV-49M w/motor AIR 63 A2 0.37 kW 3000 rpm (modified) Reliable electro-manual fan for bomb shelters and protective facilities

ERV-49M w/motor AIR 63 A2 0.37 kW 3000 rpm (modified) is a universal centrifugal fan with left-hand rotation that can operate in both electric and manual modes. It is specifically designed for ventilation systems of bomb shelters, civil defense protective structures, dual-purpose shelters, command posts, and other critical infrastructure facilities.

The model is a complete analogue of the classic ERV-49 fan (developed in 1949) and has identical dimensions and connections, allowing for direct replacement without modifications.

Design features and advantages

• Housing: compact welded steel construction (St3) with RAL6003 powder coating;
• Operating modes: seamless switching between electric and manual drive via built-in gearbox with automatic clutch — no disassembly required;
• Gearbox: three-stage, gear ratio 62.4, steel welded body and cover;
• Manual handle: 250 mm metal handle, safely fixable for manual operation;
• Impeller: 250 mm diameter, 16 backward-curved blades, made of St3 steel;
• Air duct connection: flanged, inlet — 100 mm, outlet — 80 mm.

Technical specifications

• Fan type: centrifugal, electro-manual;
• Rotation direction: left-hand;
• Drive: electric / manual;
• Gear ratio: 62.4;
• Gearbox stages: 3;
• Impeller: Ø250 mm, steel 3, 16 blades;
• Inlet diameter: 100 mm;
• Outlet diameter: 80 mm;
• Air duct connection: flanged;
• Housing and gearbox material: steel 3;
• Coating: powder coated, RAL6003;
• Manual handle length: 250 mm.

Main advantages of the ERV-49M w/motor AIR 63 A2 0.37 kW 3000 rpm

• ✅ Operates without electricity — manual mode enables use in emergencies;
• ✅ Durable and reliable — wear-resistant materials for harsh conditions;
• ✅ Fast switching — automatic clutch enables quick transition between modes;
• ✅ Full compatibility — direct replacement for classic ERV-49 without redesign;
• ✅ Corrosion resistance — polymer coating ensures long-lasting protection.

Applications of ERV-49M w/motor AIR 63 A2 0.37 kW 3000 rpm fan

• ⚙️ Bomb shelters and civil defense facilities;
• ⚙️ Dual-purpose shelters;
• ⚙️ Military facilities and command posts;
• ⚙️ Industrial ventilation systems;
• ⚙️ Facilities with backup air supply.

Conclusion

ERV-49M w/motor AIR 63 A2 0.37 kW 3000 rpm (modified) is a reliable, functional, and durable fan that combines a time-tested design with modern engineering updates. Its key advantage is autonomy and the ability to maintain airflow even in the most extreme conditions, making it an indispensable solution for any protective facility.