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Ahlsell Products Ventilation Control & regulationThyristors and transformers

Thyristors and transformers

Thyristors and transformers

Do you work in ventilation and air treatment systems? Ahlsell helps you find what you need within rules and regulations. We have the products whether you work on projects, contracting, or service and maintenance. Here you will find regulators for electric heating and everything needed for an excellent indoor climate. You will also find thermostats and sensors in our product range. The majority of products within electric heating are available in our range. Explore our wide range of electric heating, controls, and regulations here in the online store or visit your nearest Ahlsell store.

Thyristor/Speed Regulator VRS, Östberg

Thyristor/Speed Regulator VRS, Östberg

Art. no.: 6711109

VRS for manual continuous control of single phase AC motors. The minimum speed is set with a screw under the knob. All single phase fans from Östberg can be regulated with VRS. The thyristor is certified and EMC approved. Available in surface-mounted or recessed mounting. Frequency: 50 or 60 Hz.

Transformer RE, Systemair

Transformer RE, Systemair

Art. no.: 6611061

Single-phase fan variator, where the fan speed is controlled by the supply voltage and can be varied in five fixed stages, which are controlled manually with the aid of the switch at the front. The transformer output 230V for control of the damper, electric battery or other external equipment. When the transformer is set to 0, the output is voltage-free. The signal lamp on the front indicates operation. The fuse is reset from outside. REU has a cover of self-extinguishing thermoplastic. Supply voltage: 230V 50/60Hz. Please note! For fans with extended thermal contact, separate motor protection must be used.
Output voltage at the 5-stages

Transformer RTRE, Systemair

Transformer RTRE, Systemair

Art. no.: 6611115

Single-phase transformer, where the fan speed is controlled by the supply voltage can be varied in five fixed stages, which are controlled manually with the aid of the changeover knob at the front.
Built-in thermo-contact motor protection (TK) breaks the supply voltage in the event of broken thermal contacts. Reset by turning the knob is turned to "0" position for about 10 seconds after the restart.
Input for room thermostat, RT, which in the event of contact break, cuts off supply voltage to the fan. Supplied with strap.
The transformer output 230V for control of the damper, electric battery or other external equipment. When the transformer is set to 0 or when the TK input is broken, the voltage is switched off.
The signal lamp on the front indicates operation. The fuse is reset from outside. RTRE has a cover made from self-extinguishing thermoplastic. Supply voltage: 230 V 50/60 Hz
Output voltage at the 5-stages:
x) Surface-mounted.

Transformer Regulator VRTE, Östberg

Transformer Regulator VRTE, Östberg

Art. no.: 6611670

VRTE for AC motors. For manual voltage control in five fixed voltage stages with 0 position. For speed control of voltage-controlled single-phase motors. The control is done by means of the switch on the front of the housing. Operation indicator lamp is located on the housing. 60 Hz.
Output voltages:
VRTE: 80V, 110V, 140V, 170V, 190V and 230V.
NOTE! VRTE C does not support 190V output voltage.

Rotational speed and power controller Pax

Rotational speed and power controller Pax

Art. no.: 9302447

For surface or recessed mounting. (Supplied with basic box for surface mounting). Splash proof design. The speed control allows a reduced flow or forcing possibility. Fits the following fans: PAX 90, Viaduct, Duct fan 100, Duct fan 125. Can effectively be used for power and temperature control of towel dryers in the PAX TR range.

Transformer Regulator STR 1, Sentera

Transformer Regulator STR 1, Sentera

Art. no.: 6511670

For manual voltage control of the five fixed steps with a 0 position. For the rpm speed control of voltage adjustable single phase motors.
Adjustment takes place by means of the switch on the front cover. Operation indicator lamp is on the cover. The stable housing is made of plastic. Protection level IP 54.

Transformer Regulator STR 1, Sentera

Thyristor VRS, Sentera

Thyristor VRS, Sentera

Art. no.: 6511110

VRS for manual continuous control of single phase AC motors.

Transformer VRDE, Östberg

Transformer VRDE, Östberg

Art. no.: 6711072

VRDE for AC motors. Manual five-stage transformer with high / low speed switching. For manual voltage regulation at two different speeds with each of five fixed voltage stages with 0 position. For speed control of voltage-controlled single phase motors. thermostat, hygrostat etc. Stable enclosure in PVC Frequency: 50 or 60 Hz.
Output voltages:
VRDE: 80V, 100V, 120V, 150V, 170V, 190V and 230V

Transformer REU, Systemair

Transformer REU, Systemair

Art. no.: 6611072

Single-phase fan variator, where the fan speed is controlled by the supply voltage and can be varied in five fixed stages, which are controlled manually with the aid of the switch at the front. The higher speed is set using one of the knobs and the lower speed using the other. Switching is carried out by an external alternating contact, e.g. a thermostat, time switch or timer. A signal lamp at the front for operation indication. REU has a cover of self-extinguishing thermoplastic. Supply voltage: 230V 50/60Hz. Please note! For fans with extended thermal contact, separate motor protection must be used.
Output voltage at the 5-stages

Potentiometer MTP 10, 10K, Systemair

Potentiometer MTP 10, 10K, Systemair

Art. no.: 66421002

Potentiometer, speed controller, for manual control of fans having a 10V output.
- Both for surface (IP54) and recessed (IP44) mounting.
MTP 10 is a potentiometer for speed control of energy-friendly EC motors. By default, the EC motors have a 10V output which is connected to the MTP 10 which thus delivers a 0 - 10V signal back to the motor. No external feed required.

Thyristor REE, Systemair

Thyristor REE, Systemair

Art. no.: 6611110

Speed control for surface mounting only. A single-phase resistor for manually adjusting the fan speed. Systemair fans with external rotor motor can handle thyristor control. For engines of other makes, the manufacturer must be consulted. At low fan speeds, a certain engine hum may occur. For sound sensitive systems, five-step transformers are recommended.

Speed Regulator EC-Selector, Systemair

Speed Regulator EC-Selector, Systemair

Art. no.: 66421003

EC-Selector is a 3-stage speed control for fans with 0-10V input. The various steps can be adjusted with a potentiometer attached to the control. Switch between low, medium and high through external switching contact, for example thermostat or timer.

Thyristor MS EC, Östberg

Thyristor MS EC, Östberg

Art. no.: 19034219

MS EC for manual continuous control of EC motors. All fans with EC motors from Östberg have 10 Vdc own 10 Vdc output which can be connected as supply to the controls. On the stepless control, the max and min positions can be adjusted with adjusting screws under the knob. On control with fixed positions, pos. 1 and pos. 2 is adjusted with the adjusting screws. The controls are certified and EMC approved. Frequency: 50 or 60 Hz.

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