Curtis 1228-3402 D.C. Motor Controller

The Curtis 1228‑3402 is a 36 V, 70 A permanent‑magnet motor speed controller designed for industrial DC applications such as electric vehicles and heavy equipment. Common failure points include overheating of the IGBT module due to overcurrent or improper heat sinking, insulation breakdown between high‑voltage windings, and miswired input terminals that can trigger the built‑in protection circuitry. First‑check diagnostics should verify proper 36 V supply voltage, confirm current limits are not exceeded, inspect for visible burn marks or melted components on the IGBT board, and review any fault codes displayed by the controller’s diagnostic LEDs or serial interface.[oss-gpt-20b]

Need your Curtis repaired or tested?

We specialize in the repair and refurbishment of high-end industrial control electronics and power systems like this unit.

📞 Call Now: 1 (336) 969-0110

Free Estimates • Industrial-grade testing • Nationwide Service

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We reclaim and repair GPUs and industrial AI hardware (cards, PSUs, fan modules, VRM boards). Free estimate — you only pay return shipping if you decline.

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Contact Us

🚑Shop Location🛠️

Industrial Electronic Repair
145 Rockwell Place Ct
Tobaccoville, NC 27050
🚑 Rush repair shipments only — no walk-ins.

📞Phone

1-336-969-0110

📦Mailing Address🚛

Industrial Electronic Repair
931-E S. Main St #204
Kernersville, NC 27284
📦 Mailing Address (for invoices or shipped repairs)
No walk-ins accepted.