Digital Protection Device (DPD)

The DPD makes electrical installations and building operations smarter than ever. Configurable protection functions and flexible tripping characteristics give electricians maximum flexibility, while facility managers gain greater visibility of electrical distribution — all in a single device.
Integrated RCD self-testing and continuous residual current monitoring reduce the effort of recurring inspections without disrupting operations, enabled by ultra-fast semiconductor switching technology.


Full visibility. Total control.

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Facility Managers

Keep your electrical installation under control with integrated monitoring, connectivity and alarm functions. Continuous monitoring delivers full visibility, while integrated RCD self-testing and residual current monitoring reduce inspection effort without downtime. Automated reporting simplifies compliance and helps ensure safer installations and greater business continuity.

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Specifiers

Design electrical installations with confidence. Our scalable solution simplifies planning, ensures selectivity on final circuits and adapts to evolving requirements. It supports decarbonisation and energy management objectives while helping meet changing regulations. Automated reporting reduces inspection effort, keeps compliance up to date and helps deliver safe, future-ready installations.


Overview

- Configurable protection functions:
    - In 0.5 to 16 A, tripping characteristics, B or C with adjustable Ir
    - RCD protection Type A or Type F or deactivated           
    - Optional AFDD arc-fault protection
- Passive display: E-paper technology displays device status and configuration even         without a power supply 
- Residual current monitoring 
- Inrush current management
- Remote access: For status monitoring, diagnostics and switching
- Real-time notifications:
Instant measurements and alarm notifications
- NFC configuration:
With or without power supply
- Full selectivity


Intelligent protection. Two functions.
One device.

The DPD combines state-of-the-art semiconductor technology, intelligent automated testing and seamless connectivity in a single compact solution, giving you greater control, transparency and flexibility.

Protection functions

Configurable tripping characteristics, flexible RCD functionality (Type A/F, 30 mA/100 mA) and an AFDD (arc-fault detection) variant help ensure maximum system safety.

Switching functions

Manual time control and remote switching provide maximum flexibility, from simple applications to complex operating scenarios.

Measurement functions

All key electrical parameters are measured, including voltage, current, power, frequency and energy consumption, providing complete operational transparency.

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Connectivity and remote access

The optional Modbus interface enables seamless integration into existing systems. Access real-time data, diagnostics and intelligent alarm notifications remotely, whenever needed.



Better switching starts here.

100% availability. 0% testing effort. 
Combining ultra-fast semiconductor switching, intelligent test automation and integrated monitoring, the DPD delivers maximum reliability with minimal maintenance effort, while giving operators complete visibility of their electrical installation.

 

1,000 times faster. 100% smarter.

Ultra-fast semiconductor switching technology.
Thanks to integrated semiconductor switching, the device operates up to 1,000 times faster than conventional electromechanical switching devices. Miliseconds become microseconds.

 

Optimized inrush current management 

Reduce the impact of inrush currents and connect up to 3 times more loads per circuit (e.g. LED lighting) compared to traditional circuit breakers.

 

Your benefits

  1. Precise inrush current management: Can increase the number of connected loads by up to four times (e.g. LED lighting)
  2. Longer equipment life: Gentle load management reduces stress on connected equipment and helps extend service life
  3. Greater system stability: Lower load peaks support more stable and reliable operation


RCD Testing Without Disruption Maximize uptime* 

Simplify compliance. Enhance safety.

Perform fully compliant RCD trip tests without interrupting operations.


Thanks to ultra-fast semiconductor technology, the solution triggers and automatically re-closes the RCD before connected equipment loses power.

Automatic test records provide clear proof of compliance while eliminating the need for planned downtime, manual interventions, or operational disruption.


Benefits for Facility Managers

  • Zero disruption to critical operations
  • Automated compliance documentation
  • Reduced maintenance effort, costs and site visits
  • Improved electrical safety
  • Increased availability of buildings and assets


*This test is not suitable for circuits supplying inverters and certain dynamic loads, such as motors, due to their specific electrical characteristics.

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Permanent RCM monitoring instead of insulation testing

Continuous residual current monitoring reduces periodic testing and associated shutdowns. Automatic reports provide compliance documentation, including for fire insurers, while early fault detection helps prevent disruptions and outages. The result is complete installation visibility and high system availability.


100% circuit availability
Ideal for critical applications where operational continuity is essential

Ideal for

- Data centres,

- Hospitals,

- Industrial facilities,

- Energy supply systems.

 

Maintains maximum operational safety and availability — even during recurring mandatory testing.

More efficiency. More safety. Less effort.
The switching device for a new era of availability.


Connected safety

Digital Protection Device, fully integrated into Modbus and BMS environments

The DPD can be easily integrated into building management systems (BMS) via Modbus using the Modbus Transceiver.
A single transceiver connects up to 24 DPDs and provides their data via a Modbus TCP/IP network.
Communication between the DPDs and the transceiver is completely wireless — fast, secure and without additional wiring.
The result is a connected protection and monitoring solution that takes building automation, energy management and system operation to the next level.

Easy and fast local access

With the Hager Pilot app, access the Digital Protection Device instantly via smartphone (iOS or Android) using NFC. Monitor device status, measurements and settings in real time, and review event history, including tripping events, parameter changes and system notifications.

Instant visibility, precise diagnostics and maximum efficiency — right in your pocket.

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