Allen-Bradley PowerFlex 7000 80026-508-05-R ASC Snubber Capacitor

Product Summary

The Allen-Bradley 80026-508-05-R is an ASC Snubber Capacitor by Rockwell Automation, rated at 0.2 µF. It suppresses voltage transients and switching spikes in medium-voltage drive systems, primarily used within the PowerFlex 7000 platform to protect power semiconductors and extend drive reliability.

Core Specifications

• Model Number: 80026-508-05-R
• Type: ASC Snubber / Buffer Capacitor
• Capacitance: 0.2 µF
• Manufacturer: Allen-Bradley by Rockwell Automation
• Series: 80026-508 Snubber Capacitor Family

Electrical & Functional Characteristics

• Function: Absorbs energy from IGBT/thyristor switching transients via RC snubber network
• Construction: High-voltage metallized film with self-healing properties
• Peak Current: Engineered for high repetitive surge current duty
• Related Parts: 80026-508-02-R (0.68 µF), 80026-508-08-R (0.1 µF)

System Integration & Compatibility

• Primary Platform: PowerFlex 7000 Medium-Voltage AC Drives
• Installation: Drive power-stage snubber assembly; bolt/lug termination for busbar connection
• Maintenance: Subject to Rockwell Automation preventive maintenance notices; periodic replacement recommended to ensure transient protection integrity

Industrial Applications

Widely deployed in oil & gas, petrochemical, cement, metals, mining, marine, rail transit, aluminum production, and automotive manufacturing facilities requiring reliable medium-voltage motor control.

Frequently Asked Questions

What is the 80026-508-05-R used for?

It is a 0.2 µF snubber capacitor for the PowerFlex 7000 drive, absorbing switching transients to protect SGCTs and SCRs.

Which drives use this capacitor?

Allen-Bradley PowerFlex 7000 Medium-Voltage AC Drives. It mounts behind the PowerCage module in the converter cabinet.

How do I replace it?

Lock out all power first. Use a 13 mm wrench to remove the M8 bolt, unscrew counter-clockwise from the stud, apply Loctite 425 to the 25 mm flange of the new unit, hand-tighten onto the stud, connect leads to the 17 mm flange, and torque to 7 N·m (60 lb·in).

What are the related part numbers?

• 80026-508-02-R — 0.68 µF
• 80026-508-05-R — 0.2 µF (this part)
• 80026-508-08-R — 0.1 µF