Overview
The EA63-4 is a KUTAI 4A automatic voltage regulator for brushless generators.
Key Features
- 4A Continuous Output — 63VDC for brushless generators
- <±1% Regulation — Precise voltage control
- Compact Half-Wave Thyristor Design — Space-saving installation
- KUTAI Special Interface — For specific OEM generator brands
- Self-Excited Shunt — No external power required
- Reliable Solid-State — No mechanical wear parts
Technical Specifications
| Parameter | Value |
|---|---|
| Sensing Input | 190-240VAC, 1-phase |
| Output Voltage | Max 63VDC |
| Output Current | Continuous 4A |
| Regulation Accuracy | <±1% |
| Frequency | 50/60 Hz |
| Excitation Type | Half-wave thyristor, self-excited shunt |
| Application | KUTAI special interface generators |
Compatibility
Compatible with KUTAI generator systems.
Why Choose ZenixPower
- KUTAI Genuine — Proven 4A AVR design
Specification Comparison
Compatible Generators KUTAI EA series standard-interface brushless generators 50-200kW. Interface-compatible with Basler AVC63-4 for direct replacement.
Competitors AVC63-4 (Basler OEM), SX460 (Stamford universal).
| Parameter | EA63-4 | AVC63-4 | SX460 |
| Brand | KUTAI (Taiwan) | Basler (USA) | Stamford (UK) |
| Output Current | 4A cont. / 6A forcing 1 min | 4A cont. / 6A forcing 1 min | 4A cont. / 6A forcing 1 min |
| Regulation | ±0.5% | ±1% | ±1% |
| Rectification | Half-wave thyristor | Full-wave rectification | Half-wave thyristor |
| Excitation Type | Self-excited shunt | Self-excited shunt | Self-excited shunt |
| Voltage Sensing | 190-264VAC single voltage | 95-139V or 190-277V dual voltage | 190-264VAC single voltage |
| Frequency | 50/60Hz DIP selectable | 50/60Hz auto | 50/60Hz auto |
| UF Protection | Yes | Yes | Yes |
| Over-Excitation Shutdown | Yes | Yes | No |
| Enclosure | Standard open-frame | Potted/sealed | Standard open-frame |
| EMI Filtering | Built-in | Built-in | Basic |
| Market Price | $18-30 | $35-55 | $25-45 |
Selection Advice
The EA63-4 is KUTAI’s compatible equivalent to the Basler AVC63-4, with fully compatible interface for direct replacement. Key advantages: (1) ±0.5% regulation is one tier above the Basler OEM; (2) priced at approximately 50% of OEM; (3) DIP switch frequency selection is more reliable than Basler’s auto-detection.
Compared to the AVC63-4: Basler’s advantages are full-wave rectification (lower voltage ripple) and potted construction (longer life in wet environments). For dry indoor environments, the EA63-4 delivers higher accuracy at half the price. For mining, coastal, or harsh environments, the AVC63-4’s potted construction is more reliable.
Compared to the SX460: the SX460 is the world’s most universal entry-level AVR with strong brand recognition. The EA63-4 comprehensively outperforms on specifications: half-tier better regulation, over-excitation shutdown, DIP frequency selection, and lower price. Well-suited as the value-performance recommendation in the Basler-compatible replacement market.
