Elta Multiflow SMB500/4-3AC Inline Mixed Flow Box Fan Three Phase AC - 500mm
Elta Multiflow SMB500/4-3AC Inline Mixed Flow Box Fan Three Phase AC - 500mm
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Delivery and Warranty
Standard UK Mainland Delivery
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£7.95
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Place your order before 12pm Monday to Thursday and receive your order the next working day. Orders placed on Friday before 11am will be processed and delivered on Monday. (Excludes Sunday’s and Public Holidays)
£15.95
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£15.95
Northern Ireland Delivery
We offer a flat fee rate for Northern Ireland orders, and all are 5-7 working day lead times.
£29.95
Scottish Highlands & Islands Delivery
We only offer a flat fee rate for Scottish Highland & Islands orders, and all are 5-7 working day lead times.
£45.95
Channel Islands Delivery
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£45.95
Product Details
Specifications
Product specifications
| Model | SMB500/4-3AC |
| Type | Square inline mixed flow box fan |
| Duct size | 500mm (Ductmate flanges) |
| Max airflow | 3888 m³/h |
| Static pressure | 300 Pa |
| Motor | Three phase AC, 380 to 415V 50Hz, 4 pole, 1380 rpm |
| Power | 0.386 kW (0.88 A peak) |
| Noise | 49 dB(A) inlet, 52 dB(A) outlet at 3m |
| Max air temperature | 60°C |
| Warranty | 1 Year Manufacturer |
Summary
See more specification See less specification
The Elta Multiflow SMB500/4-3AC is a 500mm square inline mixed flow box fan with a three phase AC motor, moving up to 3888 m³/h in free air and still delivering 346 m³/h against 300 Pa. It fits straight into 500mm ductwork on Ductmate flanges at each end.
The 4 pole motor runs at 1380 rpm on a 380 to 415V 50Hz supply, absorbing 0.386 kW with a peak current of 0.88 A, and has sealed for life bearings. The casing is stiffened pre-galvanised sheet steel, the impeller has 7 backward curved aerofoil blades in high performance composite, and it handles air up to 60°C. Elta give a 12 month warranty.
- 3 Phase
- AC Motor
- Up to 3888 m³/h
- Speed Controllable
What it is best used for
Three phase commercial extract or supply on 500mm ductwork: restaurant and kitchen canopy extract with grease filtration, lift motor rooms, plant rooms, car park offices and general HVAC. It holds 3445 m³/h at 100 Pa and 2678 m³/h at 200 Pa, slightly more than the 450 at those working pressures.
It is not a bigger fan than the SMB450/4-3AC in free air (3888 against 3920 m³/h). Choose it when the duct is 500mm and you want to avoid a reducer, not to get more air. If you need more than about 4000 m³/h or more than 250 Pa, go to the SMB550/4-3AC.
Why choose this over alternatives
The SMB500/4-3AC and the SMB450/4-3AC have the same 0.88 A peak current and almost the same curve; the 500 gives slightly more at 100 to 200 Pa and a larger 500mm connection, which means lower duct velocity and no reducer on a 500mm system. Against the single phase SMB500, it moves about the same air but draws 0.88 A per phase at 400V instead of 1.99 A at 230V.
For a clear step up in airflow, the SMB550/4-3AC roughly doubles it to 7952 m³/h.
Installation notes
- Mount the fan at any angle in the duct, securely supported, and leave access for maintenance. It weighs 27 kg.
- Connect with the 500mm Ductmate flanges at each end. Elta's 500mm flexible connectors (063-0500-MFB) and anti vibration mounts (062-002) reduce transmitted noise and vibration.
- Wire to Elta diagram 152-106A: star connection for a 400V three phase supply. To reverse rotation swap any two incoming supply cables, and check rotation and airflow direction on first start.
- Fit a means of isolation, earth the fan, and protect the motor with a starter that has overload protection; fuses and breakers only give short circuit protection.
- Not for corrosive or explosive atmospheres. Inspect and clean the impeller and motor at least every 12 months.
You'll also need
- Elta 149-TC33 three phase transformer speed controller (3 A), available to order, ask us.
- Elta 500mm splitter silencer 068-0500-MFB, available to order, ask us.
- Elta 500mm flexible connectors 063-0500-MFB (each), available to order, ask us.
- Elta anti vibration mounts 062-002 and mounting brackets 060-MFB-01, available to order, ask us.
Browse more inline mixed flow fans, commercial box fans or Elta fans, or call us for help choosing the right fan.
Specifications
| Model | SMB500/4-3AC |
| Type | Square inline mixed flow box fan |
| Duct size | 500mm (Ductmate flanges) |
| Max airflow | 3888 m³/h |
| Static pressure | 300 Pa |
| Motor | Three phase AC, 380 to 415V 50Hz, 4 pole, 1380 rpm |
| Power | 0.386 kW (0.88 A peak) |
| Noise | 49 dB(A) inlet, 52 dB(A) outlet at 3m |
| Max air temperature | 60°C |
| Warranty | 1 Year Manufacturer |
| Airflow at 100 Pa | 3445 m³/h |
| Overall efficiency | 38.6% at best efficiency point |
| SFP at free air | 0.33 W/(L/s) |
| Dimensions | 540 x 540mm overall, 400mm long |
| Fixing holes | 4 x 9mm on 522mm centres, 20mm flange |
| Weight | 27 kg |
| Impeller | Composite, 7 backward curved aerofoil blades |
| Casing | Pre-galvanised sheet steel |
| Speed controller | 149-TC33 (5 step transformer) |
| Wiring diagram | 152-106A |
Manuals & Guides
Product Description
The Elta Multiflow SMB500/4-3AC is a 500mm square inline mixed flow box fan with a three phase AC motor, moving up to 3888 m³/h in free air and still delivering 346 m³/h against 300 Pa. It fits straight into 500mm ductwork on Ductmate flanges at each end.
The 4 pole motor runs at 1380 rpm on a 380 to 415V 50Hz supply, absorbing 0.386 kW with a peak current of 0.88 A, and has sealed for life bearings. The casing is stiffened pre-galvanised sheet steel, the impeller has 7 backward curved aerofoil blades in high performance composite, and it handles air up to 60°C. Elta give a 12 month warranty.
- 3 Phase
- AC Motor
- Up to 3888 m³/h
- Speed Controllable
What it is best used for
Three phase commercial extract or supply on 500mm ductwork: restaurant and kitchen canopy extract with grease filtration, lift motor rooms, plant rooms, car park offices and general HVAC. It holds 3445 m³/h at 100 Pa and 2678 m³/h at 200 Pa, slightly more than the 450 at those working pressures.
It is not a bigger fan than the SMB450/4-3AC in free air (3888 against 3920 m³/h). Choose it when the duct is 500mm and you want to avoid a reducer, not to get more air. If you need more than about 4000 m³/h or more than 250 Pa, go to the SMB550/4-3AC.
Why choose this over alternatives
The SMB500/4-3AC and the SMB450/4-3AC have the same 0.88 A peak current and almost the same curve; the 500 gives slightly more at 100 to 200 Pa and a larger 500mm connection, which means lower duct velocity and no reducer on a 500mm system. Against the single phase SMB500, it moves about the same air but draws 0.88 A per phase at 400V instead of 1.99 A at 230V.
For a clear step up in airflow, the SMB550/4-3AC roughly doubles it to 7952 m³/h.
Installation notes
- Mount the fan at any angle in the duct, securely supported, and leave access for maintenance. It weighs 27 kg.
- Connect with the 500mm Ductmate flanges at each end. Elta's 500mm flexible connectors (063-0500-MFB) and anti vibration mounts (062-002) reduce transmitted noise and vibration.
- Wire to Elta diagram 152-106A: star connection for a 400V three phase supply. To reverse rotation swap any two incoming supply cables, and check rotation and airflow direction on first start.
- Fit a means of isolation, earth the fan, and protect the motor with a starter that has overload protection; fuses and breakers only give short circuit protection.
- Not for corrosive or explosive atmospheres. Inspect and clean the impeller and motor at least every 12 months.
You'll also need
- Elta 149-TC33 three phase transformer speed controller (3 A), available to order, ask us.
- Elta 500mm splitter silencer 068-0500-MFB, available to order, ask us.
- Elta 500mm flexible connectors 063-0500-MFB (each), available to order, ask us.
- Elta anti vibration mounts 062-002 and mounting brackets 060-MFB-01, available to order, ask us.
Browse more inline mixed flow fans, commercial box fans or Elta fans, or call us for help choosing the right fan.
Specifications
| Model | SMB500/4-3AC |
| Type | Square inline mixed flow box fan |
| Duct size | 500mm (Ductmate flanges) |
| Max airflow | 3888 m³/h |
| Static pressure | 300 Pa |
| Motor | Three phase AC, 380 to 415V 50Hz, 4 pole, 1380 rpm |
| Power | 0.386 kW (0.88 A peak) |
| Noise | 49 dB(A) inlet, 52 dB(A) outlet at 3m |
| Max air temperature | 60°C |
| Warranty | 1 Year Manufacturer |
| Airflow at 100 Pa | 3445 m³/h |
| Overall efficiency | 38.6% at best efficiency point |
| SFP at free air | 0.33 W/(L/s) |
| Dimensions | 540 x 540mm overall, 400mm long |
| Fixing holes | 4 x 9mm on 522mm centres, 20mm flange |
| Weight | 27 kg |
| Impeller | Composite, 7 backward curved aerofoil blades |
| Casing | Pre-galvanised sheet steel |
| Speed controller | 149-TC33 (5 step transformer) |
| Wiring diagram | 152-106A |
Manuals & Guides
Delivery & Returns
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What duct size does the Elta SMB500/4-3AC fit?
It has 500mm Ductmate flanges at each end. The casing is 540 x 540mm overall and 400mm long, with 4 fixing holes of 9mm on 522mm centres.
How much air does the SMB500/4-3AC move?
Up to 3888 m³/h (1.080 m³/s) in free air, 3445 m³/h at 100 Pa, and 346 m³/h at 300 Pa, the highest pressure Elta publish for this size.
Does the SMB500/4-3AC need a three phase supply?
Yes. It is a 380 to 415V 50Hz three phase motor, wired star for 400V, with a peak current of 0.88 A. A single phase SMB500 is also available if you only have 230V.
Can the speed of the SMB500/4-3AC be controlled?
Yes, with an Elta three phase five step transformer controller. Elta specify the 149-TC33 (3 A) for this fan. It is available to order, so ask us for a price.
How noisy is the SMB500/4-3AC?
Elta quote 49 dB(A) inlet and 52 dB(A) outlet at 3m. For noise sensitive areas Elta offer a matching splitter silencer, code 068-0500-MFB.
Can the SMB500/4-3AC be mounted vertically?
Yes. Elta state the fan can be mounted at any angle, as long as it is securely supported and accessible for maintenance.