81001-956-65-R 8100195665R | Allen Bradley | Snubber Resistor

Allen Bradley 81001-956-65-R 500W 10 Ohm Snubber Resistor Assembly

Product Overview

The Allen-Bradley 81001-956-65-R (8100195665R) is a high-power snubber resistor assembly designed for surge suppression and transient voltage protection in industrial drive systems and power electronics. While some legacy databases incorrectly categorize this part number as a mechanical limit switch, it is technically a heavy-duty power resistor. This assembly features a $10 \Omega$ resistance and a robust 500W power rating, engineered to dissipate the energy spikes generated during high-speed switching of inductive loads. By absorbing these transients, the 81001-956-65-R prevents damage to sensitive semiconductors like IGBTs and SCRs, ensuring the longevity and reliability of the overall motor control system.

Industrial Application Scenarios

• VFD Snubber Circuits: Absorbing high-frequency voltage transients across switching devices in Variable Frequency Drives.

• Inductive Load Damping: Suppressing "inductive kickback" when de-energizing large motor windings or solenoid coils.

• Dynamic Braking Support: Assisting in small-scale energy dissipation during controlled deceleration of mechanical loads.

• Power Supply Protection: Serving as a bleeder or surge-limiting resistor in high-voltage DC bus assemblies.

Technical Specifications

The following specifications define the electrical and mechanical parameters of the 81001-956-65-R (8100195665R):