General
Rated voltage	230 V
Mains frequency	50 Hz / 60 Hz
Maximum load	1,25 A
Degree of protection	IP 40
Ambient temperature	0 °C to 50 °C
Response time	6 min
Switching-on delay	50 s

The VZ 6 delay timer switch from Maico is an electronic control device for regulating the switch-on delay and run-down time of fans in ventilation systems. It enables controlled operation to avoid unwanted loads on the network or on the device itself and to extend the service life of the fans. The switch is designed for use in electrical installations with a rated voltage of 230 V and supports network frequencies of 50 Hz and 60 Hz, enabling use in various countries.

Applications

The VZ 6 is used in installations where a time-delayed start-up and controlled shutdown of fans are required. This is particularly relevant in residential and commercial buildings, where ventilation systems should continue to run after the heating is switched off or during cooling to ensure even air distribution. The ambient temperature range of 0 °C to 50 °C makes the switch suitable for indoor use, while the protection rating IP 40 provides protection against finger contact and splashing water from any direction.

Functions and Equipment in Detail

The switch allows for a switch-on delay of 50 seconds, meaning the fan only starts operating after this time has elapsed following activation of the switch. This prevents the fan from being activated immediately during switching operations, which is particularly advantageous with frequent switching. The run-down time is 6 minutes, so the fan continues to run for this duration after the main control is switched off, supporting air circulation. Operation is via standard switches, enabling easy integration into existing switching systems.

Technology Explained Simply

The VZ 6 is an electronic timer switch that controls switch-on and switch-off delays via an integrated control logic. The maximum load capacity is 1.25 A, sufficient to control small to medium-sized fans. Immunity according to EN 61000-4-5 (at voltages from 1000 V to 4000 V) ensures reliable operation even during transient voltage surges, such as those caused by lightning strikes or network disturbances. If required, additional noise suppression measures such as L-, C- or RC filters, protection diodes or varistors can be used to further increase immunity.

Compatibility and Accessories

The VZ 6 is compatible with a range of fans in the Maico product range, including small room fans such as the ECA 150 ipro, ECA 100 ipro, ECA piano, ECA 120 K and other models with DN 100, DN 120 or DN 150. Use with covers such as ER-A or ER-AP 100 is also possible, with the exact mounting instructions corresponding to the respective fan model. Combining the switch with these fans enables optimized ventilation control in residential and commercial rooms.

Mounting and Installation

The switch is compactly dimensioned with a width of 20 mm, height of 13 mm and depth of 35 mm. These dimensions allow installation in standard switchboards or electrical distribution boxes. Mounting is done using standard fastening methods in electrical switch cabinets. The packaging dimensions correspond exactly to the device dimensions, indicating a slim packaging that optimizes transport and storage.

Operational Advantages

The integrated switch-on delay and run-down time reduce the load on the fans, leading to a longer service life. Controlled air circulation after switching off the heating or during cooling improves indoor air quality. Simple operation via standard switches enables seamless integration into existing electrical installations. Immunity according to EN 61000-4-5 ensures reliable operation even under difficult electrical conditions.