ABB MWD44 Surge Arrester Reliable Overvoltage Protection in stock now

The ABB MWD44 is a high-performance, polymer-housed, metal-oxide surge arrester designed for dependable protection of medium voltage (MV) equipment against lightning strikes, switching surges, and other transient overvoltages. It is engineered to ensure network reliability, protect valuable assets like transformers and switchgear, and minimize downtime in demanding utility and industrial applications.

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Core Benefits: Why Choose the ABB MWD44 Arrester?

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• Enhanced System Reliability: Provides a high level of protection, safeguarding transformers, cables, and switchgear from damaging overvoltage transients.

• Robust & Maintenance-Free Design: The lightweight yet durable polymer housing offers excellent resistance to UV radiation, pollution, and mechanical stress. Its sealed, hermetically tight design ensures long service life without routine maintenance.

• Superior Energy Absorption Capability: The advanced metal-oxide (ZnO) resistor discs feature high thermal energy handling capacity, making the MWD44 suitable for areas with high lightning activity or severe switching conditions.

• Excellent Protective Characteristics: Provides a low, stable residual voltage, ensuring sensitive equipment downstream is effectively shielded.

• Easy Installation & Versatility: Lightweight compared to porcelain alternatives, simplifying handling and mounting. Can be installed in various orientations to suit substation layouts.

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Technical Specifications & Features at a Glance

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• Rated Voltage: Covers a wide MV range, typically up to 36kV.

• Housing: High-quality polymer (silicone) for superior hydrophobicity and pollution performance.

• Core Technology: High-gradient metal-oxide (ZnO) varistor blocks.

• Standards Compliance: Designed and tested in accordance with major international standards such as IEC 60099-4.

• Applications: Ideal for indoor and outdoor use in:

◦ Electrical substations and switchgear

◦ Transformer protection (primary and secondary side)

◦ Overhead line and cable network protection

◦ Industrial plants and renewable energy installations (wind/solar farms)

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Typical Applications of the ABB MWD44 Surge Arrester

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The MWD44 is the protection of choice for engineers and utilities across multiple sectors:

• Electric Utility Networks: For the protection of distribution substations, pole-mounted transformers, and feeder lines.

• Industrial Power Systems: To secure critical processes by protecting main intake transformers and MV motors.

• Renewable Energy: Essential for safeguarding step-up transformers and collector systems in wind and solar parks.

• Commercial Infrastructure: Used in data centers, hospitals, and large facilities with critical power supply needs.

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MWD44 vs. Conventional Arresters: A Superior Choice

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Unlike older porcelain-housed arresters, the ABB MWD44's polymer design eliminates the risk of violent cracking or shattering. Its lightweight nature reduces structural load and installation cost. The superior sealing technology prevents moisture ingress, a common failure mode, ensuring long-term stability and safety.

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Conclusion: Secure Your Medium Voltage Assets

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The ABB MWD44 surge arrester represents a robust, reliable, and technologically advanced solution for managing overvoltage risks in medium voltage systems. By choosing MWD44, you invest in enhanced network availability, reduced maintenance costs, and extended equipment lifespan.