1.0EV-1.4-4-3270 U4

1.0EV-1.4-4-3270 U4 50 Hz axial equipment cooling fan, climatic version U4

1.0EV-1.4-4-3270 U4 is a 50 Hz axial equipment cooling fan, climatic version U4 intended for cooling radio-electronic equipment from a 220 V, 50 Hz supply in moderate-climate indoor installations.

A fan moves air through a rotating impeller. For this unit, the exact designation, electrical supply, airflow, pressure and mounting data remain decisive.

Function and construction of 1.0EV-1.4-4-3270 U4

This is a metal axial fan for continuous operation in any spatial position. The U4 suffix is part of the climatic designation and must remain in the product marking. One- and three-phase electrical executions are documented for this family.

The fan is a component of the cooled equipment, not a complete ventilation installation. Air-path resistance, correct rotation, unobstructed inlet and outlet and the specified supply affect its installed performance.

Electrical and airflow parameters

Nominal airflow is 140 m³/h and total pressure is 39 Pa. Supply is 187–242 V at 50 ±2.5 Hz. Power consumption is not more than 15 W for the single-phase execution and 18 W for the three-phase execution; speed is at least 2,600 rpm.

Airflow and pressure refer to documented operating points and should be checked together. A visually similar fan with another suffix, voltage or frequency is not automatically interchangeable.

Operating conditions and inspection

Operating temperature is −40 to +70 °C, relative humidity is up to 80% at +25 °C and atmospheric pressure is 400–800 mmHg. The fan withstands vibration from 1 to 80 Hz up to 50 m/s² and documented repeated, single and linear shock loads.

Incoming inspection should cover the marking, housing, impeller, connector or leads, mounting points and free rotation. Unusual noise, vibration, overheating, current deviation or reduced airflow requires investigation under approved maintenance documentation.

Related cooling fans and selection

Functionally related catalogue positions include 1.25EV-2.8-6-3270 T4 and 0.63EV-1.4-32-4620. These links support navigation and do not establish electrical, mechanical or installation interchangeability.

Application to a specific aircraft, helicopter, ground unit or electronic block must be confirmed from its illustrated parts catalogue, wiring diagram or approved service documentation.

Identification and ordering

The designation may be encountered as 1.0EV-1.4-4-3270 U4; 1.0EV-1.4-4-3270U4; 1,0ЭВ-1,4-4-3270У4. These are writing and search variants; execution suffixes and nameplate marks remain significant.

An inquiry should state the complete marking, quantity, required condition, delivery set and documentation requirements. Other units are listed in the Cooling & Ventilation Fans category.

Product Type: 50 Hz axial equipment cooling fan, climatic version U4
Primary Designation: 1.0EV-1.4-4-3270 U4
Original Cyrillic Designation: 1,0ЭВ-1,4-4-3270У4
Alternative Designations: 1.0EV-1.4-4-3270 U4; 1.0EV-1.4-4-3270U4; 1,0ЭВ-1,4-4-3270У4
Purpose: cooling radio-electronic equipment from a 220 V, 50 Hz supply in moderate-climate indoor installations
Air-Moving Principle: Axial impeller
Duty / Installation: Confirm exact execution and installation documentation
Interchangeability: Not established; verify electrical and mechanical interfaces
Documentation: Product passport and approved equipment documentation
Climatic Version: U4
Nominal Airflow: 140 m³/h
Total Pressure: 39 Pa (4 kgf/m²)
Supply Voltage: 187–242 V
Supply Frequency: 50 ±2.5 Hz
Number of Phases: 1 or 3 depending on execution
Phase-Shifting Capacitance: 1 ±0.1 µF where required
Power Consumption: ≤15 W single-phase; ≤18 W three-phase
Current Consumption: Not more than 0.07 A
Rotational Speed: Not less than 2,600 rpm
Sound Level: Not more than 60 dBA
Dimensions: 110 × 110 × 42.5 mm
Weight: 0.45 kg
Operating Temperature: −40 to +70 °C
Atmospheric Pressure: 400–800 mmHg

All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.

In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.

Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.

Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.

Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.