With POWER FUSE, you protect your 24 Vdc loads selectively and intelligently while saving space. The electronic multi-channel circuit breakers combine four or eight separately protected channels in a width of just 29 mm, providing particularly high functional density in the control cabinet. Each channel can be individually adjusted to the respective load for reliable protection, selective disconnection in the event of a fault, and high availability of your machine or system.
Thanks to intelligent switch-on logic, comprehensive diagnostic capabilities, and various communication options, POWER FUSE offers far more than conventional circuit protection. It reduces inrush current peaks, selectively disconnects faulty load circuits, and provides clear visibility into operating status. The result: less downtime, more efficient control cabinet designs, and a more reliable 24 Vdc power supply.
OVERVIEW
- Electronic multi-channel protection for 24 Vdc systems
- 4- and 8-channel versions
- Just 29 mm wide
- Tripping currents adjustable from 0.5 to 10 A per channel
- Individual protection for different loads
- Selective disconnection in the event of overcurrent or short circuits
- Reliable tripping even with long cable runs
- Sequential and load-dependent channel activation
- Soft start to reduce high inrush currents
- LED status indication and operation directly on the device
- Versions with a potential-free signal contact or Manchester code
- High system availability through targeted fault isolation
COMPACT – MORE PROTECTION IN LESS SPACE
Space in the control cabinet is valuable. POWER FUSE combines four or eight electronic protection channels in a width of only 29 mm. In the 8-channel version, this corresponds to a width of only about 3.6 mm per protected circuit.
The high channel density enables more compact control cabinet designs and reduces the space required on the DIN rail. At the same time, installation and wiring effort is reduced compared with solutions using multiple individual protection devices. This frees up valuable space for additional components and allows you to plan your systems more efficiently.
SELECTIVE – ISOLATE FAULTS AND KEEP THE SYSTEM RUNNING
A fault in a single load should not interrupt the entire 24 Vdc power supply. Our POWER FUSE circuit breakers monitor each output channel separately and, in the event of a fault, selectively disconnect only the affected load circuit.
The remaining loads continue to receive power. This prevents overcurrents or short circuits from unnecessarily affecting other parts of the machine.
The electronic tripping characteristics enable a clear and reproducible distinction between overcurrent and short circuits. Even with longer cable runs, POWER FUSE circuit breakers ensure reliable, selective tripping. This simplifies planning while increasing the operational reliability of your system.
FLEXIBLE – THE RIGHT PROTECTION FOR EVERY LOAD
Not every load has the same protection requirements. That is why the tripping current of our POWER FUSE circuit breakers can be adjusted individually for each channel.
With an adjustment range of 0.5 to 10 A, both sensitive electronics and loads with higher power requirements can be protected by a single device. Adjustment is simple using front-mounted rotary switches.
This allows you to match the protection of each load circuit to its actual current requirements. It increases flexibility during planning and enables protection of a wide variety of loads with just one product family.
INTELLIGENT – TARGETED REDUCTION OF INRUSH CURRENT PEAKS
When a machine starts up, several loads can cause high inrush currents at the same time. Capacitive loads in particular place high short-term demands on the upstream switched mode power supply and can lead to voltage dips or unwanted shutdowns.
POWER FUSE circuit breakers address this problem with intelligent startup management. The individual channels are activated sequentially based on the actual load. The next load is switched on only once the current drawn by an already activated channel has dropped sufficiently.
The additional soft-start behavior further reduces high inrush currents. This allows even demanding loads to start up reliably, reduces strain on the upstream power supply, and allows available power reserves to be used more efficiently. This can help avoid the need to oversize power supplies to handle brief inrush current peaks.
SEQUENTIAL SWITCH-ON
The integrated output channels are activated sequentially and based on the connected load. As soon as the current of one output channel falls below the set tripping current, the next channel is activated with optimized timing. This reduces inrush current peaks and stabilizes overall current consumption. Power supplies can therefore be sized according to actual requirements without the need for unnecessary power reserves.
COMMUNICATION – VISIBILITY DOWN TO THE CHANNEL LEVEL
High system availability requires faults to be detected quickly and their location clearly identified. POWER FUSE multi-channel circuit breakers therefore offer various signaling and communication options.
Depending on the version, a potential-free signal contact or Manchester code is available. This allows status information to be integrated into the higher-level control system and used for diagnostic and maintenance tasks.
LED indicators and pushbuttons on each channel also enable quick status checks and operation directly on the device. In the event of a fault, service personnel can immediately identify the affected circuit and take more targeted action.
HIGHER SYSTEM AVAILABILITY THROUGH INTELLIGENT DC CIRCUIT PROTECTION
The quality of DC circuit protection is particularly evident when a fault occurs. Instead of affecting the entire power supply, POWER FUSE isolates only the affected circuit. Unaffected parts of the system remain supplied with power and can continue operating.
This selectivity reduces the impact of individual faults and supports high system availability. The diagnostic capabilities also help locate faults faster and reduce downtime.
POWER FUSE brings together three key requirements of modern machines and systems: reliable protection, a high level of transparency, and maximum availability.
FROM CIRCUIT PROTECTION TO INTELLIGENT POWER MANAGEMENT
POWER FUSE does more than serve as an electronic circuit breaker. By combining individually adjustable channels, selective tripping characteristics, intelligent startup management, and comprehensive diagnostics, the series becomes an active part of the 24 Vdc power supply concept.
This allows the power supply and circuit protection to be better coordinated, power peaks to be controlled, and fault conditions to be identified more clearly.
POWER FUSE delivers compact DC circuit protection with greater intelligence: reduced space requirements, greater visibility, and consistently high system availability.
FLEXIBILITY FOR EACH CHANNEL, POWER AS NEEDED.
Each channel can be individually configured:
- Tripping currents from 0.5 to 10 A, easily adjustable via front-mounted rotary switches
- LED and push-button combination for each channel for clear diagnostics and easy operation
Different versions are available depending on the application requirements:
- Potential-free signal contact
- Manchester code
