- Stand alone Active Power Protector.
- High reliability for military, industrial application.
- Voltage Clamp : 36v.
- Reverse input voltage protection.
- Surge protected per Mil- STD- 1275, Mil- STD- 704.
- Output power: 450w ÷ 1000w.
- Vin: 10v ÷ 34v.
| Model | Input Voltage | Clamp Voltage | Max Current | Max Power | Size (mm) | Typ. Efficiency | Specification | 3D STEP |
|---|---|---|---|---|---|---|---|---|
| SPP-F310A | 16v ÷ 36vDC | 36vDC | 15A | 450W | 60x86x20 | 99% |  |  |
| SPP-F330A | 10v ÷ 36vDC | 36vDC | 30A | 1000W | 76x67x23 | 99% | | |
⚙️ Stand-Alone Electronic Power Protection – up to 1000 W
Advanced High-Power Input Protection for Military and Industrial Systems
The Stand-Alone Active Power Protector from the SPP-HD Series is engineered to safeguard high-current power systems such as rugged computers, vehicle control units, radar subsystems, and communication platforms.
Designed for harsh military and industrial environments, it delivers fast, intelligent protection against surges, transients, reverse polarity, and overcurrent events — all in a compact, rugged aluminum enclosure.
Compliant with MIL-STD-1275F and MIL-STD-704, this protection module clamps surges to 36 VDC, isolates faults within microseconds, and automatically restores power when normal conditions return.
It ensures uninterrupted operation of mission-critical electronics in armored vehicles, UAVs, and heavy industrial equipment powered by 28 VDC buses.
⚙️ Technical Highlights
| Model | Input Voltage | Clamp Voltage | Max Current | Max Power | Size (mm) | Typical Efficiency |
|---|---|---|---|---|---|---|
| SPP-F310A | 16–36 VDC | 36 VDC | 15 A | 450 W | 60×86×20 | 99 % |
| SPP-F330A | 10–36 VDC | 36 VDC | 30 A | 1000 W | 76×67×23 | 99 % |
New high-current versions (40 A and 50 A) are currently under development, extending protection capacity for next-generation defense and industrial systems.
⚙️ Engineering Advantages
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Full compliance with MIL-STD-1275F / 704 for 28 VDC vehicle and airborne systems
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High-current operation – up to 30 A (40–50 A models in development)
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Intelligent surge clamp at 36 VDC
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99 % efficiency – virtually zero voltage drop under load
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Self-contained stand-alone design for easy installation and field replacement
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Fast reaction time (< 2 µs) to high-energy transients
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Rugged, conduction-cooled aluminum housing – vibration, shock, and temperature resistant
⚙️ System-Level Benefits
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Smart electronic protection between power source and load
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Prevents damage to DC/DC converters and sensitive electronics
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Allows hot-swap replacement without system shutdown
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Integrates seamlessly with rugged DC/DC power supplies
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Ensures long-term reliability under MIL-STD-810H environmental conditions
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Maintenance-free solid-state design – no fuses, no moving parts
⚙️ Typical Applications
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Armored and tactical vehicle electrical systems
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Rugged mission computers and communication servers
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Radar, RF, and electronic warfare power interfaces
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Industrial automation and high-current control units
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Mobile field power distribution and defense UPS systems
⚙️ Operating Principle
The SPP-HD module acts as an active electronic “gatekeeper” between the input source and the load.
When a voltage spike or reverse connection occurs, its high-speed MOSFET network isolates the downstream electronics and clamps the voltage within microseconds.
Once normal conditions are restored, the unit automatically reactivates the load — maintaining uninterrupted operation without tripping mechanical fuses or resetting the system.
⚙️ Summary
The SPP-HD Stand-Alone Active Power Protection Series provides the ultimate input protection for high-power military and industrial systems.
With up to 1000 W output, 30 A current capacity (expandable to 40–50 A), 36 V surge clamping, and 99 % efficiency,
it delivers mission-grade reliability and ensures complete compliance with MIL-STD-1275F / 704 requirements.
Built for the toughest conditions, this power protection module keeps your systems running —
stable, secure, and unstoppable.