Bel Aerospace & Defense

Bel Aerospace & Defense is a major supplier of advanced power conversion, power management, and rugged networking solutions for aerospace and defense applications. The company designs COTS (Commercial Off‑The‑Shelf), factory‑configurable, and custom solutions that meet harsh environments and the high requirements of military applications. With several decades of experience in military‑grade design, testing, and production, Bel Aerospace & Defense guarantees support and full compliance with European standards and customer requirements.

Areas of Expertise

  • Military power conversion – DC‑DC, AC‑DC and AC+DC power supplies, DC‑AC inverters, military UPS and GCU units

  • Intelligent power management – MILPDU™ solutions with advanced user configuration

  • Rugged networking – Ethernet switches, routers, USB hubs, media converters designed for extreme environments

  • Custom solutions – Specific developments meeting MIL‑STD, RTCA DO‑160, DEF Stan, etc.

  • System integration – Compliance with VITA, SOSA™ standards, design for VPX platforms

Key Technologies and Standards

Bel Aerospace & Defense applies the most demanding military standards to ensure reliability in the most critical conditions:

  • MIL‑STD‑461 (EMC)

  • MIL‑STD‑704 (aircraft power)

  • MIL‑STD‑810 (environmental)

  • MIL‑STD‑1275 (vehicle power)

  • MIL‑STD‑1399 (naval interface)

  • RTCA DO‑160 (avionics)

  • DEF Stan 61‑5 (UK defense)

All production facilities are ISO9001:2015 and AS9100D certified and built to J‑STD‑001 Class‑3 standards.

Main Product Ranges

Power Conversion Solutions

Modified and custom power supplies for air, land, and sea military applications:

  • DC‑DC converters

  • AC‑DC converters

  • AC+DC converters

  • DC‑AC inverters

  • Military UPS (Uninterrupted Power Supply)

  • GCU (Generator Control Unit) units

Available power – from 6 W to 800 W, with wide‑range input (12–70 V) or three‑phase (115 V up to 2500 W).

Power Management Solutions

MILPDU™ (Military Power Distribution Units) integrate intelligent technology with extensive configuration:

  • I²t overload configuration from 2 A to 25 A (0.2 A steps)

  • Active short‑circuit current limiting from 3 A/15 ms to 125 A/0.5 ms (up to 2 J) at 33 V

  • Configurable GPIOs

Rugged Networking Solutions

Ethernet switches, routers, USB hubs, and media converters designed for harsh environments:

  • 3U and 6U VPX form factor, power up to 1.2 kW

  • Compliant with VITA 46/48/65 and SOSA™ standards

  • MILTECH 3U VPX switch – 24 Gigabit ports, OpenVPX compatible

  • Ideal for dismounted soldiers, drones, aircraft, armored vehicles, missiles, and naval platforms

Bel Aerospace & Defense was the first company in the MIL‑Aero sector to deliver an ultra‑compact MILTECH Ethernet switch as early as 2010.

Applications and Deployments

Bel solutions are deployed in major military programs:

  • Aircraft

  • Drones

  • Avionics

  • C4ISR

  • Electronic warfare

  • Radars

  • Missiles

  • Land vehicles

  • Surface ships and submarines

Why Bel Aerospace & Defense is a Strategic Partner for EMG2?

At EMG2, we provide technology building blocks and innovative electronic solutions, particularly in motion and power control (motors, drives, servo control) as well as embedded systems for constrained environments. Bel Aerospace & Defense perfectly complements our offering in the areas of military power conversion and rugged networking.

Our collaboration allows French customers to benefit from:

  • Local EMG2 support in France, from needs analysis to system integration

  • Simplified access to BEL’s COTS, configurable and custom ranges

  • Complementary expertise in embedded systems, vision and radio frequencies, which can complement their projects

  • Tailored responses for aerospace, defense and harsh industrial projects

We support our customers in selecting and integrating the Bel Aerospace & Defense solutions best suited to their needs (power, voltage, standards, form factor, environment), and provide technical assistance for implementation.

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