Elta Electronic Speed Controller 149-EL31TK 3 Amp
Elta Electronic Speed Controller 149-EL31TK 3 Amp
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£29.95
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Product Details
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Specifications
Product specifications
| Model | 149-EL31TK |
| Brand | Elta |
| Type | Electronic speed controller (stepless) |
| Max peak current | 3 Amp |
| Supply | Single phase 220V to 240V / 50Hz |
| Speed control | Stepless with min/max preset |
| Motor protection | Motor thermal contact (TK) and fitted fuse |
| Enclosure | IP51 |
| Operating temperature | Up to 40°C |
| Weight | 0.35 kg |
Summary
See more specification See less specification
The Elta 149-EL31TK is a 3 Amp single phase electronic speed controller for AC fans fitted with thermal cut-out protection. It gives stepless speed adjustment and wires into the motor's thermal contacts, so the fan is switched off and a trip indicator lights if the motor overheats.
It runs on a 220 to 240V 50Hz single phase supply, has an IP51 enclosure, a fitted motor protection fuse, minimum and maximum speed presets, an illuminated on/off switch and a start button, and is suitable for operating temperatures up to 40°C.
- 3 Amp
- Stepless electronic controller
- Single phase AC
What it is best used for
Stepless control of single phase AC fans up to 3 A peak that have thermal cut-out contacts, typically mid sized plate and case mounted axial fans on kitchen, plant room, workshop and general extract duties. Elta specify it for the Raptor SPA450/6-1AC and SPA500/6-1AC plate fans and the SDA400/4-1AC, SDA450/6-1AC and SDA500/6-1AC case mounted fans.
Not for EC fans (use a 0-10V EC controller), three phase motors or fans drawing more than 3 A. Where low speed motor hum would be noticed, a transformer controller is the quieter option.
Why choose this over alternatives
Compatible fans on eFans, as listed in Elta's datasheets: SPA450/6-1AC, SPA500/6-1AC, SDA400/4-1AC, SDA450/6-1AC and SDA500/6-1AC.
Over the standard 149-EL31, the TK version uses the fan's own thermal contacts to shut down and latch off on overheat, and needs the start button pressed to restart, which stops a fan cycling on and off unnoticed. For motors up to 6 A with thermal contacts, use the 149-EL61TK.
Installation notes
- Check the fan's rating plate: the motor's peak current must not exceed 3 A.
- Fix the controller in a dry indoor position; the enclosure is IP51 and rated for operating temperatures up to 40°C.
- Wire to the terminal block (L, N, U1, U2, AUX, E) exactly as shown on Elta's wiring diagram, with the 240V supply in and the fan's variable live (brown) and neutral (blue) out. Two or three wire control is supported.
- Connect the fan's thermal cut-out contacts to the controller. If the cut-out opens, the controller switches off and the trip indicator lights; press the start button to restart once the motor has cooled.
- Set the minimum and maximum speed presets during commissioning so the fan cannot be turned down to a speed where it stalls or under-ventilates.
- Installation by a qualified electrician with a means of isolation in the supply.
Browse more fan speed controllers or Elta controllers, or call us for help choosing the right product.
Specifications
| Model | 149-EL31TK |
| Brand | Elta |
| Type | Electronic speed controller (stepless) |
| Max peak current | 3 Amp |
| Supply | Single phase 220V to 240V / 50Hz |
| Speed control | Stepless with min/max preset |
| Motor protection | Motor thermal contact (TK) and fitted fuse |
| Enclosure | IP51 |
| Operating temperature | Up to 40°C |
| Weight | 0.35 kg |
| Switching | Illuminated on/off switch and start button, trip indicator |
| Control wiring | Two or three wire |
Manuals & Guides
Product Description
The Elta 149-EL31TK is a 3 Amp single phase electronic speed controller for AC fans fitted with thermal cut-out protection. It gives stepless speed adjustment and wires into the motor's thermal contacts, so the fan is switched off and a trip indicator lights if the motor overheats.
It runs on a 220 to 240V 50Hz single phase supply, has an IP51 enclosure, a fitted motor protection fuse, minimum and maximum speed presets, an illuminated on/off switch and a start button, and is suitable for operating temperatures up to 40°C.
- 3 Amp
- Stepless electronic controller
- Single phase AC
What it is best used for
Stepless control of single phase AC fans up to 3 A peak that have thermal cut-out contacts, typically mid sized plate and case mounted axial fans on kitchen, plant room, workshop and general extract duties. Elta specify it for the Raptor SPA450/6-1AC and SPA500/6-1AC plate fans and the SDA400/4-1AC, SDA450/6-1AC and SDA500/6-1AC case mounted fans.
Not for EC fans (use a 0-10V EC controller), three phase motors or fans drawing more than 3 A. Where low speed motor hum would be noticed, a transformer controller is the quieter option.
Why choose this over alternatives
Compatible fans on eFans, as listed in Elta's datasheets: SPA450/6-1AC, SPA500/6-1AC, SDA400/4-1AC, SDA450/6-1AC and SDA500/6-1AC.
Over the standard 149-EL31, the TK version uses the fan's own thermal contacts to shut down and latch off on overheat, and needs the start button pressed to restart, which stops a fan cycling on and off unnoticed. For motors up to 6 A with thermal contacts, use the 149-EL61TK.
Installation notes
- Check the fan's rating plate: the motor's peak current must not exceed 3 A.
- Fix the controller in a dry indoor position; the enclosure is IP51 and rated for operating temperatures up to 40°C.
- Wire to the terminal block (L, N, U1, U2, AUX, E) exactly as shown on Elta's wiring diagram, with the 240V supply in and the fan's variable live (brown) and neutral (blue) out. Two or three wire control is supported.
- Connect the fan's thermal cut-out contacts to the controller. If the cut-out opens, the controller switches off and the trip indicator lights; press the start button to restart once the motor has cooled.
- Set the minimum and maximum speed presets during commissioning so the fan cannot be turned down to a speed where it stalls or under-ventilates.
- Installation by a qualified electrician with a means of isolation in the supply.
Browse more fan speed controllers or Elta controllers, or call us for help choosing the right product.
Specifications
| Model | 149-EL31TK |
| Brand | Elta |
| Type | Electronic speed controller (stepless) |
| Max peak current | 3 Amp |
| Supply | Single phase 220V to 240V / 50Hz |
| Speed control | Stepless with min/max preset |
| Motor protection | Motor thermal contact (TK) and fitted fuse |
| Enclosure | IP51 |
| Operating temperature | Up to 40°C |
| Weight | 0.35 kg |
| Switching | Illuminated on/off switch and start button, trip indicator |
| Control wiring | Two or three wire |
Manuals & Guides
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What does TK mean on the Elta 149-EL31TK?
TK versions are for fans fitted with thermal cut-out protection. The controller connects to the motor's thermal contacts and switches off, with the trip indicator lit, if the cut-out opens.
Which Elta fans is the 149-EL31TK specified for?
Elta list it for the SPA450/6-1AC and SPA500/6-1AC plate fans and the SDA400/4-1AC, SDA450/6-1AC and SDA500/6-1AC case mounted fans.
How do I restart the 149-EL31TK after a trip?
Once the fault is cleared and the motor has cooled, press the start button with the on/off switch in the on position.
What current can the 149-EL31TK handle?
Single phase AC motors with a peak current up to 3 A. For up to 6 A use the 149-EL61TK.
Can the 149-EL31TK be used with an EC fan?
No. It is for single phase AC motors only. EC fans need a 0-10V EC controller.
What is the IP rating of the 149-EL31TK?
IP51, for dry indoor locations with operating temperatures up to 40°C.