🔹 Product Overview
The ABB CU930B is a high-voltage electrostatic spraying generator used in ABB robotic electrostatic painting and spraying equipment. It forms part of the high-voltage generation system that supplies controlled high-voltage DC to the applicator.
Available references identify the CU930B as an ABB high-voltage electrostatic spraying generator with an input range of AC 10 V peak to AC 40 V peak, a rated input frequency of 17 kHz ±3 kHz, and a rated input power of 200 VA.
In ABB’s electrostatic painting architecture, the cascade converts low-voltage AC into high-voltage DC, while the HVC controls the cascade and monitors output voltage and current.

📋 Technical Data
| Parameter | Specification |
|---|---|
| Brand | ABB |
| Model | CU930B |
| Product Type | High Voltage Electrostatic Spraying Generator |
| Application | Robotic electrostatic painting / spraying |
| Input Voltage Range | AC 10 V peak to AC 40 V peak |
| Rated Input Frequency | 17 kHz ±3 kHz |
| Rated Input Power | 200 VA |
| High-Voltage Function | Electrostatic spraying / painting |
| Related Controller | RGH930/931* |
| Low-Voltage Cable Reference | E37171* |
| Country of Origin | Japan |
| Listed Weight | Approx. 4.91 kg |
| Condition of Supplied Listing | Used |
The voltage, frequency, power, related controller and cable references above are based on the supplied listing and matching CU930B product references.
⚙️ Key Features
- ABB CU930B high-voltage electrostatic spraying generator
- Designed for robotic electrostatic painting systems
- 200 VA rated input power
- AC 10–40 V peak input range
- 17 kHz ±3 kHz rated input frequency
- Works as part of a controlled high-voltage generation system
- Suitable for maintenance and replacement of existing ABB painting equipment
- Associated with ABB RGH930/931 high-voltage controller systems
- Compact specialized unit for industrial robotic coating applications
The CU930B is not simply a general-purpose industrial power supply. It is a specialized component of ABB’s electrostatic painting equipment.
🎨 Typical Applications
Robotic Electrostatic Painting
The CU930B is associated with robotic electrostatic painting equipment where a high-voltage potential is required to support electrostatic coating.
Automotive & Industrial Coating
Electrostatic spraying systems are commonly used where controlled paint deposition is required on industrial components and manufactured surfaces.
Robot Applicator Systems
The CU930B works within the high-voltage section of ABB’s robotic painting architecture and is associated with the applicator-side high-voltage generation system.
Maintenance & Spare Parts
For facilities operating older ABB robotic painting equipment, a matching CU930B can be useful as a replacement or critical spare.
🔌 System Architecture
A simplified ABB electrostatic painting system can be understood as:
HVC → Low-Voltage AC → CU930B Cascade → High-Voltage DC → Applicator
The HVC supplies controlled low-voltage AC to the cascade. The cascade then converts this input into high-voltage DC, while voltage and current measurements are returned to the control system.
This means that the CU930B should be matched with the correct ABB HVC, cabling, applicator and system configuration rather than treated as an independent high-voltage generator.
🔧 Identification Information
When purchasing a replacement, compare the physical nameplate and system documentation for:
- ABB
- CU930B
- High Voltage Electrostatic Spraying Generator
- Rated input: 200 VA
- Input: AC 10 V peak–AC 40 V peak
- Frequency: 17 kHz ±3 kHz
- Associated RGH930/931 controller
- Cable drawing/reference E37171
The exact CU930B designation is important because ABB electrostatic painting equipment contains multiple specialized control and high-voltage components.
❓ Frequently Asked Questions
Q: What is the ABB CU930B?
A: It is a high-voltage electrostatic spraying generator/cascade used in ABB robotic electrostatic painting equipment.
Q: What is the rated input power?
A: The listed rated input power is 200 VA.
Q: What is the input voltage?
A: The specified input range is AC 10 V peak to AC 40 V peak.
Q: What is the operating frequency?
A: The rated input frequency is 17 kHz ±3 kHz.
Q: Is CU930B a conventional AC/DC power supply?
A: No. It is a specialized high-voltage electrostatic spraying component used within ABB robotic painting equipment.
Q: What controller is associated with CU930B?
A: Available product references identify RGH930/931 as the related high-voltage controller.
Q: Can any 200 VA power supply replace CU930B?
A: No. The CU930B is a specialized component with specific frequency, voltage, cabling, control and high-voltage requirements. A generic 200 VA power supply should not be considered a substitute.
🔗 Related ABB References
The following references are useful when identifying the surrounding ABB electrostatic painting system:
- ABB CU930B — High Voltage Electrostatic Spraying Generator
- ABB RGH930 — High Voltage Controller
- ABB RGH931 — High Voltage Controller
- ABB HVC — High Voltage Controller
- ABB HVC-02 Rev.5 — High Voltage Controller reference
- ABB E37171 — Low-Voltage Cable Drawing Reference
- ABB Electrostatic Painting Applicator
- ABB Cascade Assembly
- ABB Robotic Electrostatic Painting System
- ABB High Voltage Paint System Components
These are related system references rather than confirmed direct replacements for CU930B. ABB’s electrostatic painting architecture uses the HVC, cascade, applicator and feedback/control circuits as an integrated system.
🛠️ Compatibility & Ordering Notes
Before replacing a CU930B, verify the complete system configuration rather than matching only the model number.
Check:
- CU930B model designation
- Input voltage range
- 17 kHz operating frequency
- 200 VA rating
- RGH930/931 controller compatibility
- Low-voltage cable and connector configuration
- High-voltage output connection
- Applicator type
- Existing ABB robot/painter configuration
The supplied eBay listing identifies this particular unit as used, with an advertised weight of approximately 4.91 kg.
Because this is high-voltage electrostatic painting equipment, installation and testing should be performed by personnel familiar with the specific ABB painting system and its electrical safety procedures.






