81001-956-63-R Allen Bradley Snubber Resistor Assembly
Specification
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Product Description
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The Allen-Bradley 81001-956-63-R is an industrial snubber resistor assembly designed to protect power electronics from harmful voltage transients and switching spikes.
Snubber resistor assemblies are used in medium-voltage drives, motor controls, and power conversion equipment to absorb and dissipate energy
generated during rapid switching events — such as when contactors, thyristors, IGBTs, or other semiconductor devices turn on or off.
This protection helps improve the reliability and longevity of sensitive components in automation and
drive systems by reducing electrical stress and noise.
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| More Technical Data |
| Manufacturer |
Allen‑Bradley / Rockwell Automation |
| Construction |
Rugged resistor elements mounted in an assembly suitable for panels or heat sinks |
| Part Number |
81001-956-63-R |
| Frequently Asked Questions |
1. What is a snubber resistor assembly?
A snubber resistor assembly is a protective network used in electrical power circuits to absorb and dissipate transient energy created by switching events (e.g., when a motor
drive or contactor opens/closes). It helps reduce voltage spikes and electrical noise, protecting semiconductors
nd other sensitive components.
2. Why is this part used in industrial equipment?
When power devices switch rapidly, they can create high-frequency voltage spikes that can damage control electronics. Installing a snubber resistor helps
smooth these transitions, enhancing equipment reliability and preventing premature failure.
3. Can this part be replaced with a generic resistor?
Not usually — snubber assemblies are designed with specific resistance, power dissipation, and transient energy handling characteristics.
Substituting a generic component without matching specifications can reduce transient suppression effectiveness and risk
damage to other components. Always use a matched snubber assembly with equivalent
ratings. (General engineering best practice)
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About Moore
At Moore Automation LIMITED is a leading global supplier of control system components.
We specialize in control systems and drives. With many years of experience in the industrial sector,
we consistently deliver the highest quality of spare parts.We have tens of thousands of spare parts
and spare parts warehouse. Products and services to serve for installing of users control system,
Distributed control systems,programmable controllers,panel controller and drive!
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