ABB NRED-61-E Voltage Divider / Overvoltage Protection Module – ACS800/600 – Tested

Product Overview

Original ABB NRED-61-E thick-film hybrid voltage divider and overvoltage protection module for ACS800 and ACS600 series drives. Functions as a high-performance surge suppressor and voltage regulator for internal control circuitry. Provides deterministic DC bus overvoltage protection with a response time of less than 25ns. Uses ceramic substrate thick-film hybrid packaging technology, integrating power resistors, power MOSFETs, and Zener diodes for robust thermal stability and electrical isolation. Essential for DC bus capacitor voltage equalization in high-power drive systems.

Key Features

• Genuine ABB original – NRED-61-E thick-film hybrid module
• Ceramic substrate thick-film hybrid technology – integrates MOV, MOSFET, and Zener diodes
• Varistor voltage: 610V ±10%
• Response time: <25ns – deterministic surge protection
• Peak surge current: 2500A (8/20 μs)
• Energy absorption: 150J (at 2ms)
• Maximum clamping voltage: 1000V
• Wide operating temperature: -40°C to +125°C
• Essential for DC bus capacitor balancing and overvoltage protection
• ABB classifies as consumable – included in 6-year and 12-year PM kits
• Original pulled – no repair history

Specifications

Compatibility Note

• Compatible with ACS800 and ACS600 series drives
• Functions as a voltage divider / overvoltage protection module for DC bus circuits
• Essential for capacitor voltage equalization in high-power drive systems
• Part numbers: 58926451 / 68262747 – verify original board marking
• ABB classifies this as a consumable part – included in 6-year and 12-year preventive maintenance kits
• Verify drive model and hardware version before ordering

Quality Assurance

• Original pulled from working drive; tested functional with no repair history
• Actual photos sent before shipping
• Test video available upon request
• ESD anti-static packaging