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1SFA664002R8001 ABB CSU-2MV Medium Voltage Current Sensing Unit
ABB CSU-2MV 1SFA664002R8001 is a medium-voltage current sensing unit for the TVOC-2 Arc Guard System, providing 0.1–4 kA nominal current measurement and 0.1–12 kA overcurrent measurement for combined light and current arc-fault protection.
£2,090.22
Why Choose the ABB CSU-2MV Current Sensing Unit?
The ABB CSU-2MV 1SFA664002R8001 is a medium-voltage current sensing unit designed as an accessory for the ABB Arc Guard System TVOC-2. It enables dual conditioning of light and current, allowing the Arc Guard System to consider an overcurrent condition together with optical arc detection to help prevent nuisance tripping.
Designed specifically for medium-voltage applications, the CSU-2MV supports connection of 1–4 KECA or KEVCD current sensors for measurement of phases L1–L3 and neutral. It covers a nominal current measurement range of 0.1–4 kA and an overcurrent measurement range of 0.1–12 kA, making it suitable for a broad range of switchgear protection applications.
The CSU-2MV provides configurable overcurrent and warning-current settings, with parameters accessible through its touchscreen or via Modbus RTU. It operates from a wide 24–240 V AC or 24–250 V DC supply and can be wall or DIN-rail mounted for flexible integration into electrical switchgear assemblies.
Key Advantages
- Dedicated medium-voltage current sensing unit for ABB Arc Guard System TVOC-2.
- Dual conditioning of light and current helps prevent nuisance Arc Guard trips.
- Wide nominal current measurement range of 0.1–4 kA.
- Overcurrent measurement range of 0.1–12 kA.
- Supports 1–4 KECA or KEVCD current sensors for L1–L3 and neutral measurement.
- Configurable through touchscreen controls or Modbus RTU communication.
Key Features
- ABB CSU-2MV current sensing unit.
- Designed for medium-voltage applications.
- Compatible with the ABB Arc Guard System TVOC-2.
- 0.1–4 kA nominal current range.
- 0.1–12 kA overcurrent range.
- Current measurement for L1, L2, L3 and neutral.
- Modbus RTU communication interface.
- K1 change-over signal relay for overcurrent signalling.
- Wall or DIN-rail mounting.
Reliable Current Supervision for Arc Guard Systems
Arc Guard protection systems use rapid optical detection to identify the intense light produced by an electrical arc. Adding current sensing allows the protection system to condition its response using both light and current information, helping distinguish genuine high-current arc events from other sources of intense light within or around the switchgear.
The ABB CSU-2MV integrates this current-supervision capability with the TVOC-2 Arc Guard System for medium-voltage installations. Configurable current thresholds, Modbus RTU communication and support for multiple current sensors make it a flexible component for modern switchgear arc-fault protection schemes.
Typical Applications
- Medium-voltage switchgear arc-fault protection.
- ABB TVOC-2 Arc Guard System installations.
- Industrial power distribution systems.
- Medium-voltage switchboards and electrical assemblies.
- Arc-fault protection requiring combined light and current detection.
- Industrial and infrastructure electrical protection systems.
Technical Specifications
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| Monitoring Function | Current | |
|---|---|---|
| Series | Arc Guard System CSU-2 | |
| Order code | 1SFA664002R8001 | |
| Product type | Medium-voltage current sensing unit | |
| Product group | Arc Guard Components | |
| Compatible system | ABB Arc Guard System TVOC-2 | |
| Nominal current range | 0.1–4 kA | |
| Overcurrent range | 0.1–12 kA | |
| Current sensor compatibility | KECA and KEVCD | |
| Current sensor connections | 1–4 sensors | |
| Measured conductors | L1, L2, L3 and neutral | |
| Supply voltage | 24–240 V AC / 24–250 V DC | |
| Communication protocol | Modbus RTU | |
| Signal relay | 1 change-over contact | |
| Mounting type | Wall or DIN rail | |
| Terminal type | Screw terminals | |
| Operating temperature | −25 to +70 °C | |
| Dimensions (H × W × D) | 141.1 × 155.5 × 63.8 mm | |
| Weight | approx. 0.42 kg |
Frequently Asked Questions
What is the ABB CSU-2MV 1SFA664002R8001 used for?
The CSU-2MV is a medium-voltage current sensing unit used with the ABB TVOC-2 Arc Guard System when combined light and current conditioning is required for arc-fault protection.
What current range can the ABB CSU-2MV measure?
The CSU-2MV covers a nominal current range of 0.1–4 kA and an overcurrent measurement range of 0.1–12 kA.
Which current sensors are compatible with the CSU-2MV?
The CSU-2MV supports KECA and KEVCD current sensors, with connections for 1–4 sensors to measure L1–L3 and neutral.
What supply voltage does the ABB CSU-2MV require?
The unit operates from a wide supply range of 24–240 V AC or 24–250 V DC.
How can the ABB CSU-2MV be configured and installed?
Current settings can be configured through the touchscreen or via Modbus RTU, and the unit supports either wall or DIN-rail mounting.
Trusted by Electrical Professionals Worldwide
ABB Arc Guard System components are designed for demanding electrical protection applications, helping switchgear manufacturers, panel builders and electrical engineers implement rapid and dependable arc-fault detection in modern power distribution systems.
