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ABB 3AFE64803689 CBHX165C5R414

ABB 3AFE64803689 (CBHX165C5R414) is a charging resistor / DC-link pre-charge resistor used as a spare component in ABB industrial drive systems. It is designed to limit the initial inrush current when DC-link capacitors are charged during drive startup, protecting the rectifier, capacitors, and power electronics from excessive current surges.

Product Information

Technical Description

The ABB CBHX165C5R414 charging resistor is installed in the DC bus pre-charge circuit of AC drives. During power-up, the resistor is temporarily connected in series with the charging path to reduce the surge current caused by charging large DC-link capacitors. After the DC voltage reaches the required level, the bypass contactor closes and removes the resistor from the circuit.

Key functions:

• Limits DC-link capacitor charging current
• Prevents damage to rectifier bridges and DC capacitors
• Reduces startup stress on drive power components
• Improves drive reliability and service life
• Provides stable DC bus charging performance

Main Specifications

Application Range

The ABB 3AFE64803689 CBHX165C5R414 is commonly applied in:

• ABB ACS800 AC drive systems
• Industrial motor control cabinets
• High-power inverter systems
• Industrial automation equipment
• Retrofit and maintenance projects requiring original ABB drive spare parts

Typical industries include:

• Power generation
• Oil & gas
• Metallurgy
• Chemical processing
• Water treatment
• Manufacturing automation

Replacement & Maintenance Notes

When replacing this component:

• Confirm the exact ABB drive model and frame size.
• Check resistor value and pulse-energy rating.
• Inspect the pre-charge contactor and DC-link capacitors if the resistor has failed.
• Use the original ABB specification to avoid incorrect charging time or excessive inrush current.

Conclusion

The ABB 3AFE64803689 CBHX165C5R414 charging resistor is a critical protection component for ABB drive systems. By controlling DC-link pre-charge current, it helps ensure safe startup, reduces electrical stress, and improves the long-term reliability of industrial AC drive installations. It is a suitable spare part for ABB ACS800-related maintenance and repair applications.