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MB • Centrifugal fans

Single inlet centrifugal fan

Application

  • MB blowers are used for applications where slightly dusty air has to be removed.
  • The fan is suitable for handling air up to 80°C.
  • A protection hood is required for outside use.

Composition

  • The casing is made of spot welded sheet steel and painted in epoxy RAL 7031 with a total thickness of 80µ. The strong base frame support the motor
  • The impeller with forward curved blades is dynamically and statically balanced grade G6.3 according to ISO 1940/1. The many concave blades (30 or more) gives a great air volume at low speed which is benefit to a low noise level.
  • Totally closed squirrel-cage asynchronous motor
  • Protection IP55 – Insulation F
  • Supply: 230Vac 1ph 50Hz (Steinmetz type) - 230/400Vac 3ph 50Hz and 400/690Vac from 5.5kW motors

Accessories

  • Inlet flange, type RNFLA
  • Outlet guard, type RDP
  • Square/round piece on outlet, type RC
  • 5-steps transformer speed controller 230V, type TSCTK-1
  • 5-steps transformer speed controller 3x400v, type TSCTK-4
  • Frequency converter 1x230V, type FIS(-C)-11-B
  • Frequency converter 3x400V, type FIS(-C)-44-B

Options

  • ATEX II 2G T3 version
  • High temperature 180°C version
  • 2-speed motors
  • Stainless steel version
  • Belt driven version

Order example

MB253/400V

MB253 = fan

400V = supply 3ph

BTRN = speed controller

RNFL = inlet flange

RDP = outlet guard

Square/round piece

Air performance data

 Q [m³/h]
200Pa300Pa400Pa500Pa600Pa750Pa
MB 2011200-----
MB 253300026001500---
MB 302-5300480042003000-
MB 353900085008000750068005000
MB 403---125001200011000
MB 4048000700057001800--
MB 45512000112501000082003800-
MB 503-1800017500170001600014000

Attention

  • The MB fan may never be used with free inlet. There should be a minimal counter-pressure as shown in the table above. Please measure the current at first startup.
  • The motorspeed is not adjustable by means of an electronic controller.

Selection curves

Technical data

U [V]P [kW]I [A]SCn [rpm]Lpa @ 1,5 m [dB(A)]
MB 2011 x 2300.252.32TSCTK 1-30 / FIS-1120E-0.37-B138063
MB 2531 x 2300.554.03TSCTK 1-50 / FIS-1120E-0.75-B138070
MB 3021 x 2301.107.27TSCTK 1-110 / FIS-1120E-1.1-B138074
MB 2013 x 4000.250.77TSCTK 4-20 / FIS-4420E-0.75-B138063
MB 2533 x 4000.551.44TSCTK 4-20 / FIS-4420E-0.75-B138070
MB 3023 x 4001.102.55TSCTK 4-30 / FIS-4420E-1.5-B138074
MB 3533 x 40036.40TSCTK-4-70 / FIS-4420E-4.0-B141079
MB 4033 x 4005.5011.40TSCTK-4-140 / FIS-4420E-5.5-B141082
MB 4043 x 4001.503.90TSCTK-4-40 / FIS-4420E-1.5-B92075
MB 4553 x 40037.20TSCTK-4-110 / FIS-4420E-4.0-B94079
MB 5033 x 4007.5017FIS-4420E-7.5-B95083

  • SC = Speed controller
  • Lpa = Sound pressure level
  • Sound pressure Lpa measured according to UNI EN10531

Attention

  • In the orientation drawing, the motor is directed towards you. The desired orientation has to be specified upon order
  • A protection hood is required for outdoor mounting

Dimensions

 

Ø As

B [mm]

C [mm]

D [mm]

E [mm]

F [mm]

G [mm]

H [mm]

L [mm]

N [mm]

O [mm]

Q [mm]

R [mm]

U [mm]

V [mm]

Z [mm]

[kg]

MB 201

200

232

260

145

140

260

425

340

255

192

192

215

215

210

86

370

22

MB 253

250

282

310

175

180

320

525

420

255

232

232

255

255

250

106

410

26

MB 302

300

332

362

205

220

380

625

500

255

272

272

295

295

250

126

480

36

MB 353

350

382

412

235

260

445

735

580

320

318

318

345

345

305

146

555

60

MB 403/404

400

432

462

265

300

505

835

660

370

358

358

385

385

380

166

635

110

MB 455

450

482

515

295

340

565

935

740

420

400

400

425

425

440

188

740

190

MB 503

500

532

565

325

380

625

1040

820

440

440

440

465

465

440

210

825

200
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