Overview
The EA440-T is a KUTAI AVR with built-in soft-start function for smooth generator voltage ramp-up, reducing stress on excitation system.
Key Features
- Built-in Soft Start — Gradual voltage ramp on engine start
- 4A/90VDC Output — Higher voltage than standard EA440
- 90-520VAC Wide Sensing — Compatible with diverse generators
- 50/60Hz Selectable — Worldwide frequency compatibility
- Sensing Voltage Loss Protection — Safe fault handling
- Under-Frequency LED Indicator — Real-time status
- Parallel Operation Ready — DIP/TRIM/DROOP controls
- SX440-Compatible Replacement — Enhanced with soft start
Technical Specifications
| Parameter | Value |
|---|---|
| Sensing Input | 90-520VAC, 1-phase 2-wire |
| Output Voltage | Max 90VDC |
| Output Current | Continuous 4A |
| Regulation Accuracy | <±1% |
| Frequency | 50/60 Hz selectable |
| Excitation Type | Self-excited shunt |
| Soft Start | Yes, built-in |
| UF Protection | Yes, with LED indicator |
| Sensing Loss Protection | Yes |
Compatibility
Compatible with KUTAI generator systems.
Why Choose ZenixPower
- KUTAI Genuine — Soft-start protects excitation system
Specification Comparison
Compatible Generators Stamford AS series compatible replacement, 200kW+ generator sets.
Competitors AS440 (Stamford OEM).
| Parameter | EA440 | EA440-T | AS440 |
| Output | 4A | 4A | 4A |
| Regulation | ±0.5% | ±0.5% | ±0.5% |
| 3-Phase Sensing | No | Yes | Yes |
| Price | $30-50 | $35-55 | $70-100 |
Selection Advice
The EA440 is positioned against the AS440, with identical performance at approximately 40-50% of the price. The EA440-T adds 3-phase sensing. If Stamford OEM branding is not required, the EA440 offers excellent value as an AS440 alternative.
