Description
Curtis 1268-5403 Replacement Specifications
| Specification | Details |
|---|---|
| Model | Curtis 1268-5403 |
| Motor Type | Separately Excited (SepEx) DC Motor |
| Voltage | 36–48V |
| Armature Current | 400A |
| Field Current | 50A |
| PWM Frequency | 16 kHz |
| Throttle | 0–5KΩ / 0–5V |
| Operating Temperature | -40°C to +50°C |
| Dimensions | 229 × 178 × 81 mm |
| Weight | 3.9 kg |
| Environmental Rating | IP64 / IP67 |
The 1268-5403 provides a 400A two-minute armature rating and 50A field rating. Its 16 kHz operating frequency helps provide smooth and quiet motor operation.
Key Features of the Curtis 1268-5403 Replacement
36-48V 400A SepEx Motor Control
The Curtis 1268-5403 replacement is designed for separately excited DC motors, providing independent field and armature control. This architecture allows precise management of vehicle speed and torque while supporting regenerative braking.
Programmable Vehicle Control
The controller provides programmable parameters for motor characteristics, acceleration, braking, speed limits, and other vehicle operating functions. Curtis 1311 and 1314 programming tools can be used for parameter adjustment and diagnostics.
Regenerative Braking and Safety Functions
The 1268-5403 supports regenerative braking and includes anti-rollback, anti-stall, high-pedal disable, static return-to-off, and WalkAway braking functions. A Hall-effect speed sensor provides feedback for closed-loop vehicle speed control.
Curtis 1268-5403 Replacement Applications
The Curtis 1268-5403 replacement is suitable for compatible applications such as:
- Heavy-duty golf carts
- Electric utility vehicles
- Personnel transport vehicles
- Burden carriers
- Industrial transport vehicles
- Other SepEx electric vehicles
The Curtis 1268 platform is specifically designed for transport vehicles requiring programmable speed and torque control.
Throttle Compatibility
Before ordering a Curtis 1268-5403 replacement, check the existing throttle configuration. The 1268-5403 supports 5KΩ three-wire potentiometer and 0–5V throttle inputs. It does not directly support the ITS throttle type used by certain other 1268 models. Replacing an ITS-equipped controller may therefore require a compatible throttle upgrade.
How to Choose a Curtis 1268-5403 Replacement
Verify the battery voltage, SepEx motor, armature and field current, throttle type, speed sensor, brake system, wiring, and vehicle model before purchasing.
Get a Curtis 1268-5403 Replacement
If you need a Curtis 1268-5403 replacement, provide your original controller model, vehicle information, motor specifications, battery voltage, and throttle type for compatibility verification.
Contact us for replacement pricing, compatibility checking, programming support, OEM customization, and bulk orders.
DIMENSIONS
WIRING DIAGRAM
Wiring Diagram for 1268 with EM brake
Wiring Diagram for 1268 with WalkAway function
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