Three-phase transformer – 208V -> 400V + N
Allows conversion from 3 x 208V to 3 x 400V + N with galvanic isolation. Complies with all current standards.
| Weight | N/A |
|---|---|
| Dimensions | N/A |
| Input voltage(s) | 3 x 400 VAC |
| Output voltage(s) | 3 x 230VAC + N |
| Protection rating | IP23 |
| Type of outputs | Terminal blocks |
Fiche technique non disponible pour le moment. Faites une demande via notre page de contact.
Three-Phase Transformer 208V -> 400V + N
Three-phase transformer 208V 400V + N in an enclosure, IP23 – IK08 protection rating, available in all power ratings according to your needs.
100% French manufacturing 🇫🇷, produced in our ABL Transfo workshops in Gailhan (30260), guaranteeing irreproachable quality and perfect compliance with current standards. Every transformer leaving our workshop is 100% electrically tested.



- Input voltages: 3 x 208 VAC
- Output voltages: 3 x 400 VAC + N
- IP23 enclosure finish
- Primary wiring: Delta △
- Secondary wiring: Star ★ + N
- Available wiring: DYN11 ; YND ; ZZYN (extra cost)
Functions and uses of our 400 230 three-phase transformer
This transformer is designed to transform 3 x 208 V into 3 x 400 V supply and/or generate a neutral point when it is not available.
It is particularly suitable for industrial and commercial installations or automation requiring galvanic separation to improve network safety and reliability.
Thanks to their versatility and proven reliability, these three-phase isolation transformers are used in a multitude of sectors.
They are used in industry as well as in environments requiring high electrical stability or enhanced equipment protection.
Common areas of application include:
- Aeronautics and aviation: secure power supply for test benches and ground equipment.
- Industry and production: protection of machine tools, automation, drives, and production lines.
- Medical sector: isolation of sensitive equipment and maintenance of power quality in critical environments.
- Automation and robotics: power stability for PLCs, robots, and control systems.
- Commercial buildings and technical infrastructure: reduction of electromagnetic interference in complex electrical networks.
And more generally, in any environment requiring galvanic separation, neutral creation, or improvement of energy quality.
Technical advantages of the three-phase isolation transformer
- Reduction of harmonics and electromagnetic noise, for more stable operation of your equipment.
- Elimination of residual voltages on the neutral: in this case, the neutral must absolutely be earthed to guarantee optimal potential stability.
- Total galvanic isolation between primary and secondary, limiting the risk of current return or disturbance.
- Robust and ventilated construction in an IP23 IK08 metal enclosure, suitable for demanding environments.
- Customization possible: power, voltage, adjustment taps, fixing accessories, or custom cabinets. Access the configurator >> Three-Phase Transfo Creator
Ultra-fast shipping times on the three-phase range
- Between 1 and 50 kVA: Dispatch within 3 days.
- Between 50 and 100 kVA: Dispatch within 6 days.
- Over 100 kVA: Between 4 and 5 weeks, contact us if urgent.
Coupling of the 208V 400V + N transformer
The standard coupling of our 208 400 + N three-phase transformer is DYN11 (delta at primary, star + neutral at secondary). Other couplings are possible according to your needs, please contact us for any wiring other than DYN11. The phase-to-neutral voltage at the secondary is 230V.
| Primary side | Secondary side |
|---|---|
| | |
| Reference | Model | Weight | Dimensions |
|---|---|---|---|
| TTI208400N-1000-23 | 1000 vA (1kVA) | 25 kg | 340 x 240 x 370 mm |
| TTI208400N-2000-23 | 2000 vA (2kVA) | 32 kg | 340 x 240 x 370 mm |
| TTI208400N-2500-23 | 2500 vA (2.5kVA) | 36 kg | 340 x 240 x 370 mm |
| TTI208400N-3150-23 | 3150 vA (3.15kVA) | 38 kg | 340 x 240 x 370 mm |
| TTI208400N-4000-23 | 4000 vA (4kVA) | 43 kg | 340 x 240 x 370 mm |
| TTI208400N-5000-23 | 5000 vA (5kVA) | 46 kg | 340 x 240 x 370 mm |
| TTI208400N-6300-23 | 6300 vA (6.3kVA) | 60 kg | 460 x 300 x 470 mm |
| TTI208400N-8000-23 | 8000 vA (8kVA) | 79 kg | 460 x 300 x 470 mm |
| TTI208400N-10000-23 | 10,000 vA (10kVA) | 89 kg | 520 x 320 x 520 mm |
| TTI208400N-12500-23 | 12,500 vA (12.5kVA) | 94 kg | 520 x 320 x 520 mm |
| TTI208400N-16000-23 | 16,000 vA (16kVA) | 104 kg | 520 x 320 x 520 mm |
| TTI208400N-20000-23 | 20,000 vA (20kVA) | 124 kg | 520 x 320 x 520 mm |
| TTI208400N-25000-23 | 25,000 vA (25kVA) | 169 kg | 520 x 320 x 520 mm |
| TTI208400N-30000-23 | 30,000 vA (30kVA) | 190 kg | 520 x 320 x 520 mm |
| TTI208400N-40000-23 | 40,000 vA (40kVA) | 205 kg | 520 x 320 x 520 mm |
| TTI208400N-50000-23 | 50,000 vA (50kVA) | 275 kg | 715 x 710 x 790 mm |
| TTI208400N-63000-23 | 63,000 vA (63kVA) | 220 kg | 715 x 510 x 790 mm |
| TTI208400N-80000-23 | 80,000 vA (80kVA) | 300 kg | 715 x 510 x 790 mm |
| TTI208400N-100000-23 | 100,000 vA (100kVA) | 345 kg | 715 x 510 x 790 mm |
| TTI208400N-125000-23 | 125,000 vA (125kVA) | 360 kg | 795 x 525 x 890 mm |
| TTI208400N-160000-23 | 160,000 vA (160kVA) | 480 kg | 910 x 660 x 970 mm |
Three-phase transformer – 208V -> 400V + N



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