{"id":"ed8b3c9f-39ff-4e33-a912-5d0ddc5afc1d","slug":"efficient-toroidal-coil-corporation","name":"Efficient Toroidal Coil Corporation","legalName":null,"otherNames":["ETCC India","ETCC"],"website":"https://etccindia.com","roles":["manufacturer"],"description":"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.","notes":"**Products**\n- Toroidal transformers 10VA–3000VA, 50Hz to 10kHz\n- Current transformers 50A–2000A, accuracy class 0.5\n- Linear and servo potentiometers\n- Wire wound resistors 5W–200W\n- Rheostats 25W–500W\n\n**Quality**\n- Every unit is individually tested, not sampled\n- Full lot traceability from raw material to dispatch\n- Standard toroidal units are tested to IEC 61558 / IS 2026\n\n**Industries**\n- Defence, aerospace, industrial, medical, automotive\n- Components supplied for platforms including the Su-30MKI, Tejas LCA and naval electronic systems\n\n**Other**\n- Founded 1994 by Mr. Rajan Naroor\n- Customer visits and audits are welcome at the factory\n- Serves OEMs across India and globally","yearEstablished":1994,"languages":["en"],"serviceArea":"OEMs across India and globally","engagement":{"type":"request_quote","how":"Both standard catalogue items and fully custom builds to a customer drawing are offered. Prototype quantities are accepted with no minimum run.","responseTime":null,"needs":["Specification or drawing","Power rating (VA) or current rating","Frequency and voltage (primary and secondary)","Quantity","Termination and enclosure requirements"]},"city":"Pune","cities":["Pune"],"state":"Maharashtra","locations":[{"kind":"factory","address":"Unit No. 11, Electronic Sadan No.-1, M.I.D.C., Bhosari, Pune, Pimpri-Chinchwad, Maharashtra 411026, India"}],"identifiers":[],"credentials":[],"contacts":[{"channel":"phone","value":"+91-9822614244","purpose":"general","who":null,"hours":null,"digital":false},{"channel":"phone","value":"+91-20-30689099","purpose":"general","who":null,"hours":null,"digital":false}],"agentReachable":false,"hasPrivateContacts":false,"offerings":[{"id":"796fd169-cab1-473e-a6c7-3784590117fb","kind":"product","title":"Current transformers, potentiometers, wire wound resistors and rheostats","description":"Further product lines made in-house at the Pune facility.","notes":"- Current transformers 50A–2000A, accuracy class 0.5\n- Servo potentiometers ±0.5% linearity, −55°C to +125°C\n- Linear potentiometers (slide-wire and linear motion types)\n- Wire wound resistors 5W–200W, ceramic and aluminium housed\n- Rheostats, rotary and slider types, 25W–500W","minOrder":null,"leadTime":null,"pricing":null},{"id":"4ab0b8e5-8a7e-4663-9c09-272c2728fa23","kind":"custom_production","title":"Custom toroidal transformers","description":"Toroidal transformers wound to customer specification, 10VA to 3000VA, 50Hz to 10kHz, including 400Hz defence-grade designs.","notes":"**Options**\n- Core: CRGO silicon steel, ferrite, nanocrystalline\n- Insulation Class F (155°C) through H (180°C), up to 200°C\n- Single, dual, centre-tapped or 12+ multi-tap secondaries\n- Electrostatic shield, thermal fuse or switch\n- Termination: flying leads, PCB pins, screw terminals, bolt mount\n- Enclosure: open wound, varnish impregnated, epoxy potted, IP-rated\n- Regulation down to 1%\n- Custom lead colours and lengths\n- Prototype to production, no minimum run","minOrder":"Small quantities accepted — no minimum run required","leadTime":null,"pricing":null}],"sources":[{"url":"https://etccindia.com/","fetchedAt":"2026-10-11"},{"url":"https://etccindia.com/about-us","fetchedAt":"2026-10-11"},{"url":"https://etccindia.com/toroidal-transformer","fetchedAt":"2026-10-11"}],"verifiedAt":null,"lastUpdated":"2026-10-11","lastVisited":"2026-10-11"}