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Allen-Bradley 81001-956-53-R Snubber Resistor Assembly for Industrial Inverters
The Allen-Bradley 81001-956-53-R is an 800W, 45-Ohm snubber resistor assembly designed for inverter protection. It suppresses high-voltage transients and $dv/dt$ spikes in industrial power circuits, ensuring the longevity of SCR modules and switching semiconductors. This robust assembly is essential for maintaining electrical stability in high-power automation systems.
Description
Product Description
The Allen-Bradley 81001-956-53-R serves as a heavy-duty snubber resistor assembly designed specifically for high-power industrial inverter systems and silicon-controlled rectifier (SCR) circuits. This component plays a vital role in circuit protection by dampening voltage transients and suppressing the $dv/dt$ (rate of voltage change) that occurs during high-speed switching operations. By absorbing inductive energy spikes, the assembly prevents premature semiconductor failure and ensures the stable operation of power electronics in demanding environments.
Engineered with a substantial power rating of 800 Watts and a precise resistance value of 45 Ohms, this assembly effectively dissipates the thermal energy generated during transient suppression. The robust mechanical design features a heat-resistant substrate and high-grade resistive elements, which allow it to maintain performance integrity even under continuous thermal cycling. Consequently, implementing the 81001-956-53-R reduces electrical noise across the system backplane and protects sensitive downstream PLC components from electromagnetic interference.
Installation of this snubber resistor assembly typically occurs within the power section of large-scale motor drives or custom power conversion systems. Because industrial environments often subject hardware to vibration and high temperatures, Allen-Bradley has optimized this unit for maximum durability. Maintenance teams favor this assembly for its reliable service life and its ability to minimize unplanned downtime caused by switching surges. Furthermore, the unit is a direct replacement part, ensuring seamless mechanical and electrical compatibility with existing Rockwell Automation infrastructure.
Technical Specifications
- Manufacturer: Allen-Bradley / Rockwell Automation
- Part Number: 81001-956-53-R
- Component Type: Snubber Resistor Assembly
- Power Dissipation: 800 Watts
- Nominal Resistance: 45 Ohms
- Weight: 1.2 kg (2.65 lbs)
- Dimensions: 25.0 x 20.7 x 5.5 cm
- Country of Origin: USA
Additional information
| Weight | 1.2 kg |
|---|---|
| Country of Origin | USA |
| Dimension | 25 x 20.7 x 5.5 cm |
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