Electrical

Speed Controller REB2.5N - Electrical

Electronic single-phase speed controllers -

available in wall box or flush mount versions.
fuse protected with spare fuses included.
radio interference protected.
minimum speed adjustment.
single ON/OFF and speed regulation contol knob.

Type REB	Hz	V	IP Protection	Power (VA)	Maximum current (A)	Elect. insulation class	Operating temp. range
2.5N	50	220 - 240	IP-44	550	2.5	II	0 - 40º

Speed Controller REB-5N - Electrical

Electronic single-phase speed controllers -

wall mounted.
fuse protected with spare fuses included.
radio interference protected.
minimum speed adjustment.
single ON/OFF and speed regulation contol knob.

Type REB	Hz	V	IP Protection	Power (VA)	Maximum current (A)	Elect. insulation class	Operating temp. range
5N	50	220 - 240	IP-44	1100	5	II	5 - 45º

Two Speed Switch REGUL-2 - Electrical

Fan ON/OFF and speed selector I/II switch. Max. current rating 2 A

Humidistrat HIG-2 - Electrical

Enables the automatic ON/OFF operation of an extract fan by monitoring the Relative Humidity level.

adjustable pre-set RH level of 60-90%.
automatically switches the fan ON or OFF.

Type HIG			IP Protection	Power (VA)	Elect. Insulation class	Operating temp. range	Humidity adjustment
2.5N			IP-21	6 (2)	II	0 - 40º	60 - 90º

Air Quality Sensor SQA - Electrical

Automatically switches the fan on when the quality of the ambient air deteriorates below an acceptable level due to fumes, odours, tobacco, smoke, dampness etc.

The SQA is an adjustable Run-On-Timer facility, which enables the fan to operate for a preselected time period after the air quality sensor has switched off.

Important: This sensor MUST NOT be used to detect combustible gasses or fires and in connection with any safety alarm systems.

Air Quality Sensor			IP Protection	Maximum Power (A)	Elect. Insulation class	Operating temp. range	Humidity adjustment
SQA			IP-21	6 (2)	II	0 - 50º	1 - 25

Inverters - Electrical

Supply	Motor	Current Rating	Enclosure Rating
Single-phase	Three-phase	to 7A	IP20
Three-phase	Three-phase	to 340A	IP20

*Only for motorsthat are 45V star/240V delta, the motors are then connected in delta

Inverters can be used to control conventional motors provided they have adequate cooling.

The control of conventional motors is more effectively done using frequency inverters which vary the motor speed by varying the frequency of the electrical supply. Recent developments in power electronics have resulted in drive efficiencies as high as 98% being achieved with additional benefits of reduced noise levels, reduced harmonic distortion to supply, increased ratings and improved reliability.

The units for single-phase supply can have a forward / reverse / stop / reset switch and LED status indicator. Some three-phase controllers, in addition to the above, can have a digital speed meter incorporated.

These speed controllers normally require the electrical cables to be shielded along their entire length to comply with regulations. Inform our Sales Engineers if an Inverter is going to be used so it can be ensured that all fan internal wiring is shielded to meet EMC requirements.

Additional care must be taken if the inverter unit is mounted remotely from the fan being controlled.

ZN62 - Electrical

The ZN62 run-on timer is designed to permit the supply of electricity to motors or lights so they can continue to operate for 6 minutes after the power is switched off. They also provide a 2 minute start delay.