VARITECTOR PU AC I with integrated fuse

The demands on system availability in industrial plants, buildings and power generation plants are growing. High-performance lightning and surge protection prevents cost-intensive failures and is already mandatory in many areas.

The proven surge protection devices of the VPU series are now also available in variants with integrated type I back-up fuse with 25 kA. This eliminates the need for an additional back-up fuse upstream of the SPD. The combined type I+II surge protection devices have one back-up fuse per protective path and can be used universally in power distribution systems. Application-specific product configurations enable universal use in different network forms.

The benefits at a glance

Maximum protection

The new surge protection devices with integrated back-up fuse offer optimal protection for power feeds due to 25 kA rated leakage current and fuse monitoring.

Universal use

The dimensioning is independent of the main fuse rating, so that no additional back-up fuse is required even above 315 A. This minimizes the wiring effort for all power distributions.

Compact design

The modules have a width of only 35.6 mm per protective path and can be used in small spaces. In addition, they are pluggable and particularly easy to maintain.

Powerful internal components

Technical data Product innovation

• Max. continuous voltage UC: 275 VAC

• Discharge current Iimp: 25 kA (L-N)

• Discharge current Iimp: 100 kA (N-PE)

• Protection level UP: < 1500 V

• Very low follow current, not tripping a 16 A fuse

• Simultaneous monitoring of MOV and fuse component

• Leakage current-free phase GDT technology

Go to product catalog

0 %

Space saving

Optimized material handling

0 %

Installation time

- Reduced wiring by sacrificing pre-fuse

0 %

VARITECTOR Performance

Investment protection, reliability and quality

VPU AC I F – Surge protection devices with integrated fuse Product innovation

Surge protection devices for multi-pole applications

The demands on system availability in industrial plants, buildings and power generation plants are growing. High-performance lightning and surge protection prevents failures and is already mandatory in many areas.

The proven surge protection devices of the VPU series type I with 25 kA are now also available in versions with integrated back-up fuse. This eliminates the need for an additional back-up fuse upstream of the SPD. The combined type I+II surge protection devices have one back-up fuse per protective path and can be used in power distribution systems universally. Preconfigured configurations save time and wiring work.

VPU AC I F – Surge protection devices with integrated fuse

Your advantages

Perfect protection due to integrated fuse and high discharge currents
Flexible use in all power distribution systems
Efficient wiring by omitting back-up fuses
Leakage-current-free protection technology
Preconfigured for multi-pole applications
Convenient installation and maintenance due to pluggable modules

Go to product catalog

Phase distribution bars for individual configurations

Fast and safe cross connection

The phase distribution bars complement VPU series surge protection devices with type I integrated fuses with 25 kA. The phase distribution bars enable various application-specific product configurations for universal use of the VARITECTOR PU AC I with integrated fuse in different grid systems.