Overview
The 3037359 is a Cummins EFC-series electronic speed governor (Normally Open / 常开式) optimised for automated (auto-start) diesel generator sets. It features a 0–30 s adjustable soft-start to eliminate black-smoke on crank and enhanced anti-interference design for unattended operation.
Key Features
- Closed-Loop Speed Control — ±0.25% steady-state stability for precise engine RPM regulation under varying load conditions
- Normally Open Fail-Safe — Actuator defaults to full fuel position on power loss, preventing unexpected engine shutdown in critical applications
- Magnetic Pickup Sensing — 600–9500Hz MPU input range compatible with Cummins and most industrial diesel engine flywheel sensors
- Soft-Start Ramp — Adjustable ramp rate reduces crank smoke, limits inrush current, and provides smooth engine acceleration to rated speed
- 12/24V Dual Voltage — Auto-sensing DC supply (8–32V range) for flexible integration with standard generator battery systems
- OEM Direct Replacement — Form, fit, and function replacement for Cummins 3037359 EFC governor; plug-and-play with existing wiring harnesses
Technical Specifications
| Parameter | Value |
|---|---|
| ———– | ——- |
| Model | 3037359 |
| Brand | Cummins EFC |
| Type | Electronic Speed Governor (EFC, Normally Open) |
| Speed Stability | ±0.25% |
| Speed Sensor Input | 2–120 V RMS |
| Actuator Output | Min 1 A; Max 4.5 A |
| Control Mode | Droop adjustable (1–5%) |
| Power Consumption | 40 mA (excluding actuator) |
| Supply Voltage | 24V DC (±6V), Negative Ground |
| Application | Cummins auto-start genset (EFC, NO) |
Compatibility
Compatible with Cummins NTA19, KTA38G, NTA855, KTA19, 6CT, 6BT series engines using Normally Open EFC actuators.
Why Choose ZenixPower
- Soft-Start Built In — Configurable 0–30 s ramp for clean crank
- Anti-Interference — Optimised for unattended auto-start gensets
- Reverse Polarity Protected — Survives accidental battery reversal
Competitors GAC ESD5500E — world’s most popular universal governor | KUTAI EG3000 — value alternative | Fortrust C2002 — budget-friendly
Specification Comparison
| Parameter | 3037359 | GAC ESD5500E | KUTAI EG3000 | Fortrust C2002 |
|---|---|---|---|---|
| Brand | Cummins (USA) | GAC (USA) | KUTAI (Taiwan) | Fortrust (China) |
| Function | Electronic Speed Governor (EFC, Normally Open) | Electronic + Overspeed | Closed-loop Electronic | Electronic + Soft-Start |
| DC Supply | — | 12/24V DC | 12/24V DC | 12/24V DC |
| Actuator Output | Min 1 A; Max 4.5 A | 10A continuous | 0.5–15A | 10A max |
| Speed Stability | ±0.25% | ±0.25% | ±0.5% | ±0.25% |
| Speed Range | — | 600–9500 Hz | 600–9500 Hz | 500–9000 Hz |
| Overspeed Protection | Optional | Built-in | Optional | Built-in |
| Paralleling | No | Optional | No | No |
| Price | Contact Us | $280–450 | $180–300 | $120–220 |
