MAC-4000-1U AC Changer

3-Phase 360-528 Vrms L-L 47-65 Hz

Single-Phase 4000 W / 5000 VA

Surge-Rated for 5250 W / 6500 VA

115 Vrms L-N, 230 Vrms L-N 50 Hz, 60 Hz, or 400 Hz




Transient (15 s)

Output Options

Full Load Efficiency

Product Details

SynQor’s Military Field-Grade AC Phase/Frequency Changer units are designed for the extreme environmental and demanding electrical conditions of Military/Aerospace applications. SynQor’s MAC incorporates field proven high efficiency designs and rugged packaging technologies. This MAC will accept a 3-Phase AC input and change it to a well-conditioned Single-Phase AC output using a two-stage DC link isolated topology. It is designed to comply with a wide range of military standards. Options include a selection of output voltage amplitudes, frequencies and an electronic breaker on the AC output to permit fault-tolerant parallel operation for higher power and/or N+M redundant systems.

Compliance Features

MAC-4000 units are designed to meet MIL-STD:
• MIL-STD-1399-300B - Interface Std for Shipboard Systems
• MIL-STD-810G - Environmental Engineering Considerations
• MIL-STD-461F - Electromagnetic Interface


• Sealed, weather-proof, shock-proof construction
• Two-stage, DC link isolated topology
• 4000 W (5000 VA) output power; 15 s transient to 5250 W (6500 VA)
• Full power operation: -40 °C to +55 °C
• 3-Phase 360-528 Vrms L-L Δ input (draws balanced currents)
• 47-65 Hz input frequency range
• Pure sinusoidal AC output voltage
• Handles 0.0—1.0 power factor loads and non-linear loads
• Up to 32 units can be combined for higher power, higher voltage, or a 3-Phase AC output
• Capable of N+M redundancy with optional “AC Output Electronic Breaker” (R option) and the appropriate configuration cable
• User I/O and Configuration signal ports
• Battle Mode for over-temperature events
• 1U high rack mount unit (17.00”W x 22.42”D x 1.73”H)
• Low weight: 33 lbs.

Manufacturing Process

• AS9100 and ISO 9001 certified facility
• Full component traceability


• 115 Vrms or 230 Vrms AC output
• 50 Hz, 60 Hz, or 400 Hz AC output (software selectable)
• Shipboard version with floating output neutral wire
• N+1 Redundancy