Custom Transformers
Toroidal Power Transformers
— 50Hz to 10kHz
Precision-wound toroidal transformers built to your exact specification — including defence-grade 400Hz designs for aerospace and military applications. Manufactured in Pune since 1994.
Defence & Aerospace
Defence & Aerospace Grade
Built to 400Hz military power specifications. Used in airborne instruments, radar systems, and defence electronics where size, weight, and thermal performance are critical. Every unit wound and tested in-house.
Custom transformer
Every unit built to your specification
We manufacture custom toroidal transformers from 10VA to 3000VA with configurable frequency, voltage, winding, insulation, and termination options, including single, dual, centre-tapped, and multiple secondary outputs.
400Hz Aerospace Grade
Built to 400Hz military power specifications for airborne instruments, radar, and defence electronics.
Nanocrystalline Core
Advanced nanocrystalline core option for high-frequency, low-loss applications up to 10kHz.
Electrostatic Shielding
Copper foil shield between primary and secondary for EMI suppression and noise isolation.
50Hz to 10kHz Range
Standard 50/60Hz power to high-frequency 10kHz designs — all wound and tested in-house.
Multi-Tap Windings
Single, dual, centre-tapped, or up to 12+ configurable secondary outputs per unit.
Thermal Protection
Integrated thermal fuse or resettable thermal switch for reliable over-temperature cutoff.
| Parameter | What we can do |
|---|---|
| Power Rating | 10VA to 3000VA |
| Frequency | 50Hz, 60Hz, 400Hz, 1kHz–10kHz |
| Primary Voltage | Any voltage — single or multiple primaries |
| Secondary Windings | Single, dual, centre-tapped, or up to 12+ multi-tap outputs |
| Core Material | CRGO (Cold Rolled Grain Oriented) silicon steel, ferrite core, nanocrystalline |
| Insulation Class | Class F (155°C) through Class H (180°C), up to 200°C |
| Thermal Protection | Thermal fuse (one-time cutoff) or thermal switch (resettable over-temperature protection) |
| Termination | Flying leads, PCB pins, screw terminals, bolt mount |
| Form Factor | Standard toroidal, PCB mount, open frame |
| Enclosure | Open wound, varnish impregnated, epoxy potted, IP-rated |
| Electrostatic Shield | Available between primary and secondary |
| Regulation | Down to 1% voltage regulation |
| Lead Colours & Length | Custom colour-coding and lengths to your harness spec |
| Prototypes | Small quantities accepted — no minimum run required |
Standard Range
Standard Toroidal Transformers
For applications where a proven design is sufficient, our standard range covers the most common power and voltage configurations. All units carry ETCC labelling with full winding specifications.
| Specification | Value |
|---|---|
| Power Range | 10VA – 3000VA |
| Input Voltage | 230V AC (50/60Hz) standard |
| Output Voltage | Multiple standard secondaries available |
| Insulation Class | Class F (155°C) |
| Regulation | ±5% voltage regulation |
| Lead Type | Colour-coded flying leads |
| Label | Full winding spec printed on body |
Standard Specifications — 24 Models
All units manufactured with 0–230V AC primary winding and tested to IEC 61558 / IS 2026. Custom secondary voltages and tapping configurations available on request.
| VA (Nominal) | VA (Maximum) | Magnetic Path (cm) | Approx Size OD × Height (mm) | Primary Voltage |
|---|---|---|---|---|
| 10 | 17 | 14.14 | 65 × 25 | 0–230V AC |
| 15 | 22 | 14.14 | 65 × 30 | 0–230V AC |
| 25 | 31 | 15.71 | 70 × 30 | 0–230V AC |
| 30 | 38 | 16.49 | 75 × 30 | 0–230V AC |
| 50 | 62 | 18.85 | 90 × 32 | 0–230V AC |
| 75 | 85 | 19.63 | 90 × 38 | 0–230V AC |
| 90 | 103 | 19.63 | 90 × 45 | 0–230V AC |
| 150 | 170 | 21.99 | 100 × 50 | 0–230V AC |