Efficient Toroidal Coil Corporation
manufacturer · Pune, Maharashtra
Last updated 2026-10-11
Pune-based manufacturer of custom electromagnetic components: toroidal transformers, current transformers, potentiometers, wire wound resistors and rheostats. It supplies defence, aerospace, industrial, medical and automotive OEMs, and has operated since 1994.
How to reach this business
- phone: +91-9822614244
- phone: +91-20-30689099
- Good to know
- Both standard catalogue items and fully custom builds to a customer drawing are offered. Prototype quantities are accepted with no minimum run.
- Include in your first message
- Specification or drawing
- Power rating (VA) or current rating
- Frequency and voltage (primary and secondary)
- Quantity
- Termination and enclosure requirements
What they offer
Current transformers, potentiometers, wire wound resistors and rheostats
Further product lines made in-house at the Pune facility.
- Current transformers 50A–2000A, accuracy class 0.5
- Servo potentiometers ±0.5% linearity, −55°C to +125°C
- Linear potentiometers (slide-wire and linear motion types)
- Wire wound resistors 5W–200W, ceramic and aluminium housed
- Rheostats, rotary and slider types, 25W–500W
Custom toroidal transformers
Toroidal transformers wound to customer specification, 10VA to 3000VA, 50Hz to 10kHz, including 400Hz defence-grade designs.
- Minimum order
- Small quantities accepted — no minimum run required
Options
- Core: CRGO silicon steel, ferrite, nanocrystalline
- Insulation Class F (155°C) through H (180°C), up to 200°C
- Single, dual, centre-tapped or 12+ multi-tap secondaries
- Electrostatic shield, thermal fuse or switch
- Termination: flying leads, PCB pins, screw terminals, bolt mount
- Enclosure: open wound, varnish impregnated, epoxy potted, IP-rated
- Regulation down to 1%
- Custom lead colours and lengths
- Prototype to production, no minimum run
More about this business
Products
- Toroidal transformers 10VA–3000VA, 50Hz to 10kHz
- Current transformers 50A–2000A, accuracy class 0.5
- Linear and servo potentiometers
- Wire wound resistors 5W–200W
- Rheostats 25W–500W
Quality
- Every unit is individually tested, not sampled
- Full lot traceability from raw material to dispatch
- Standard toroidal units are tested to IEC 61558 / IS 2026
Industries
- Defence, aerospace, industrial, medical, automotive
- Components supplied for platforms including the Su-30MKI, Tejas LCA and naval electronic systems
Other
- Founded 1994 by Mr. Rajan Naroor
- Customer visits and audits are welcome at the factory
- Serves OEMs across India and globally
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At a glance
- Website
- etccindia.com
- Established
- 1994
- Service area
- OEMs across India and globally
- Languages
- en
Locations
- factory
Unit No. 11, Electronic Sadan No.-1, M.I.D.C., Bhosari, Pune, Pimpri-Chinchwad, Maharashtra 411026, India
Listed in Pune · Transformers and magnetics in Pune
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