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380V EC 355mm 1700W Powerful Ventilation Backward Centrifugal Fan for Centralized Ventilation System

1. 355mm
2. IP54 protection level
3. Aluminum alloy motor with galvanized steel sheet impeller, fashion design.
4. Using Ball bearing, working life more than 50,000 hours
Availability:
Quantity:
  • FB3G355-4AAS-80

  • Fanova

Phase

~

3~

额定电压 Nominal Voltage

VAC

380

电压范围 Nominal voltage range

VAC

304V456V

频率 Frequency

Hz

50/60

电流消耗 Current draw

A

2.8±10%

转速 Speed(RPM)

min-1

2700±5%

功率消耗 Power consumption

W

1700±10%

声压级 Sound Pressure Level

dB(A

81±5%

最大风量 Max. Air Flow

CFM / m3/H

4031.23/6850

最大静压 Max. Static Pressure

In.wg /Pa

4.08/1020

绝缘等级 Insulation class

~

Class F

防护等级 Degree of protection

~

IP54

控制方式 Control Input

~

0~10VDC / PWM

信号输出 Signal Output

~

FG (Tach output )

Product Overview

The FB3G355-4AAS-80 is a high-pressure industrial EC centrifugal fan engineered for extreme airflow resistance in demanding environments. Driven by a robust BLEC188 motor, it delivers 6,850 m³/h airflow at 1,020 Pa static pressure—the highest in its class. With IP54 protection, MODBUS integration, and 380V three-phase operation, it excels in applications requiring forceful ventilation against dense obstructions.

Key Features

  1. Extreme Static Pressure Capability
    Generates 1,020 Pa of force—ideal for penetrating dense filters, compact ductwork, or heat exchangers where high resistance is critical.

  2. High-Speed Performance
    Operates at 2,700 RPM (±5%) for aggressive airflow, optimized by an 8-blade aluminum impeller (355mm) for efficiency at maximum load.

  3. Industrial Connectivity & Control
    Supports 0–10V/PWM speed modulation and RS485/MODBUS protocol (via RSA/RSB pins). Includes +10VDC output for sensor integration and FG tachometer (5 pulses/rev).

  4. Heavy-Duty Protections
    Features IP54-rated housing, Class F insulation, and integrated alarm contacts (NC/COM). Protections cover thermal shutdown, reverse polarity, and motor current limitation.

Applications

  • Dust collection systems: High-resistance filtration in woodworking/metalworking.

  • Industrial ovens/furnaces: Forced exhaust with backpressure.

  • Chemical scrubbers: Overcoming dense media resistance.

  • High-static HVAC: Large facilities with complex ducting.

FAQ

Q: Noise level at 2,700 RPM?
A: 81 dB(A) ±5%—recommend vibration dampers or ducted installation for noise-sensitive areas.

Q: Can MODBUS override PWM control?
A: Yes. RS485 enables full control via MODBUS commands (consult support for protocol details).

Q: What does the alarm contact (NC/COM) signal?
A: Closes during faults (e.g., overheating, locked rotor) for external system alerts.


ECB355-4AAS-80

EB355-4AAS-80

Life Expectance

50,000 Hours(L10),At 40℃ room, humidity 15%~65%RH

Technical features

Motor current limitation

Soft starting Protection

Under/Over voltage detection

Thermal overload protection for electronics/motor

Line undervoltage detection

Locked-rotor Protection

Reverse Polarity Protection


Operating Temperature

Fan

-25℃ (Min. )~60℃ (Max. )

Heat sink of IC

115℃ (Max. )

Other electronic parts

85℃ (Max. )

Ball bearing

80℃ (Max. )

Lead Wire

120℃ (Max. )

Storage Temperature

-40℃ to 75℃

Operating Humidity

5% to 90% RH

Storage Humidity

5% to 95% RH


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 +86-512-66152110
 +86-18168737096
 +8617715518438
 +8617715518438
 No.739, Fuyuan Road, Xiangcheng District, Suzhou, Jiangsu, P.R. China 215133

If you have any questions, please feel free to contact us at any time!

Fanova (Suzhou) Motor Technology Co., Ltd. is a leader in the industry, provides customers with diverse fan solutions with its professional, innovative, and environmentally friendly philosophy.

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+86-512-66152110
+86-17715518438
Sales01@fanova-tech.com
+8617715518438
+8617715518438
No.739, Fuyuan Road, Xiangcheng District, Suzhou, Jiangsu, P.R. China 215133
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