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415v / 415v

Get an Australian-Made Three-Phase Transformer

Reliable, Australian-Made Dyn11 Transformers – Built for 415V Systems

Our SD415 range offers a pre-engineered, cost-effective solution for 415V to 415V isolation, designed specifically for Australian commercial and industrial systems. Built in our Melbourne factory using high-quality copper windings and electrical-grade steel, these three-phase isolation transformers are ideal where galvanic isolation is required without a voltage step.

Like all SES transformers, the SD415 range is manufactured to the highest standard – robust construction, thorough testing, and full compliance with AS61558 & AS60076. These are not imported catalogue products – they’re locally built to perform and to last.

Single Phase Isolation Transformers

3 Phase Isolation Transformers

415v/415v

Our 415 V / 415 V 3‑phase isolation transformers are dry‑type, custom‑built in Melbourne (up to 750 kVA), using enameled copper windings and electrical‑grade steel.

They provide full galvanic isolation with flexible vector group options (Delta-Star Dyn11, Delta-Delta, etc.), available in IP23 or IP65 enclosures—ideal for protecting equipment, reducing noise, and ensuring safe, reliable performance.

 

 

  • Part Number: SD415-5-kVA-ISO
  • Input voltage: 3-phase 415V @ 7A 50Hz
  • Output voltage: 5kVA (415V @ 7A)
  • Power: 5 kVA
  • Enclosure: IP00 (Open-type)
  • Dimensions H x W x D mm: 275 x 300 x 190 mm
  • Mass: 50 kg
  • Standards: AS/NZS 60076 & AS/NZS 61558
  • Construction: Three phase dry-type isolation transformer, wound with enamelled copper windings and fitted with suitably sized copper bar terminals for input / output.  Brass earth stud provided for connection. Neutral available on the output for connection if required.
  • Temp Class: Materials rated to Class F – 155°C.
  • Price: TBA

Key Features of the SD415 Range

  • Standard Dyn11 (Delta-Star) configuration – ideal for balancing phase voltages and shifting phase angle.
    Other configurations are available as required.
  • Nominal Input/Output: 415V / 415V – no voltage change, just clean isolation
  • Power ratings from 10kVA to 750kVA – with customisation available beyond that.
  • Insulation Class H
  • Copper windings and terminals
  • Low voltage drop under load
  • Available in open frame or enclosed (IP23/IP65)
  • Optional ±2.5% and ±5% off-load tappings available
  • Optional Electrostatic screen
415v / 415v
SD415-60kVA-IP65 3ph isol. TF IP65 (outdoor) enclosure

Any More Questions?

To help us provide you with the best solution to your needs please contact us

Contact us  Call Us – (03) 9706 4202

415v / 415v
IP23 enclosure – steel mesh in the base, and vents at the top allow for ANAN convection cooling.

Enclosures for Your Three-Phase Transformer

Southern Electronic Services can supply your transformer open, or encase your three-phase transformer in an oyster grey powder-coated steel enclosure for hard wiring. Our standard enclosures are rated at IP23 (indoor), or IP65 (outdoor) for when more protection is necessary. Outdoor enclosures typically come with wiring chambers fitted to the side to house input/output terminals.
Check this useful IP rating table.

We also offer wall-mounted enclosures for smaller 3-phase isolation transformers up to about 5kVA.

Why choose the SD415?

  • Designed specifically for 415V (400V) three-phase systems, which are standard across Australian industry.
  • Provides galvanic isolation to reduce electrical noise and improve safety.
  • Fast lead times.
  • Built in-house by our experienced team with over 45 years of transformer expertise.
  • Backed by a one-year warranty and a 25+ year design life

If you’re not sure of your transformer requirements, please give us a call at 03 9706 4202 and speak to our team.

415v / 415v
Custom design & construction means we can include additional requirements such as ±% tappings seen here.

Any More Questions?

To help us provide you with the best solution to your needs please contact us

Contact us  Call Us – (03) 9706 4202