Sep Excited 1268-5403 Motor Controller
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The Curtis 1268‑5403 is a separately‑excited DC motor speed controller rated 36–48 V and up to 400 A, commonly used in heavy‑duty golf carts, forklifts, and utility vehicles. Typical failure points for this class include MOSFET or gate driver burnout, heat‑sink overheating or loose mounting, throttle pedal or brake resistor degradation, and power supply voltage sag or noise on the excitation line. Initial checks should verify the 36–48 V input supply and ground continuity, inspect the heatsink and fan assembly for proper contact and airflow, and review any diagnostic LEDs or error codes displayed by the controller’s microprocessor.[oss-gpt-20b] |
Need your Sep Excited repaired or tested?
We specialize in the repair and refurbishment of high-end industrial control electronics and power systems like this unit.
- ⚙️ Fast Diagnostics – Same-day evaluation available
- 🔁 Reliable Turnaround – Most jobs ship within 5–10 business days
- 🧰 Expert Technicians – Decades of board-level experience
- ✅ 1-Year Warranty – Every repair fully guaranteed
📞 Call Now: 1 (336) 969-0110
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- 🔧 Board-level diagnostics (shorts, VRM, memory, fan, thermals)
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- ✅ 1-Year warranty on completed repairs
Free Estimates • Industrial-grade testing • 1-Year Warranty • Nationwide Service
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Sep Excited 1268-5403 Motor ControllerContact Us
🚑Shop Location🛠️
Industrial Electronic Repair
145 Rockwell Place Ct
Tobaccoville, NC 27050
🚑 Rush repair shipments only — no walk-ins.
📞Phone
📦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.