A blue zinc oxide varistor 40D431K with two wire leads, manufactured by DXM Electronics.

Varistors surge limiter 40D series

40D Series Varistors Key Features

● High Surge Absorption: Varistors handle significant surges effectively .

● Cost-Effective, Good Quality: The 40D zinc oxide varistor offers reliable high voltage surge protection.

● Fast Response: High voltage metal oxide varistors quickly clamp voltage spikes.

● Durable Design: Built to last, ensuring long operational life.

● Versatile Applications: Ideal for electronics, industrial, and telecom equipment etc.

INQUIRY

Details

Varistors 40D Series Overview

The 40D series of Varistors, specifically zinc oxide varistors (MOVs), are designed for transient voltage surge suppression. These high voltage varistors are essential in protecting sensitive electronic components from damaging voltage spikes, offering robust and reliable performance across various applications.

Advantages of Varistors

The varistors 40D series provides several significant advantages:

High Energy Absorption: This zinc oxide varistor can absorb substantial energy levels, crucial for protecting sensitive components from transient surges.
Fast Response Time: The 40D series high voltage metal oxide varistor responds quickly to voltage spikes, effectively clamping the voltage to a safe level.
Durability: Designed to withstand multiple surge events, these high voltage metal oxide varistors offer a long operational life under normal conditions.

Applications of Varistors

The 40D series Varistors are widely used in multiple industries due to their effective surge suppression capabilities. Below are the key applications:

Consumer Electronics: Safeguards devices like televisions, computers, and home appliances from voltage spikes.
Industrial Equipment: Protects machinery and control systems from electrical surges that can cause operational failures.
Telecommunications: Ensures reliable operation by providing surge protection for communication lines and equipment.

Key Features of Varistors

Zinc Oxide Varistor Main Specifications

Specification	Value
Varistors Voltage Range	200~1600V
Max Allowable Voltage	130~1000V(AC), 170~1280V(DC)
Capacitance @ 1kHz	1150-8400pF
Response Time	<25 nanoseconds
Energy Handling Capacity	High, suitable for lightning surge protection

Varistors Dimensions

The 40D series Varistors typically have a disc diameter of 40mm, making them suitable for various industrial applications where robust surge protection is required.

Selection of Zinc Oxide Varistor

When selecting a zinc oxide varistor, consider the maximum allowable voltage, varistor voltage, clamping voltage, and energy absorption capabilities to match the specific protection requirements of your application.

Working Principle of High Voltage Varistor

High voltage varistor operates by maintaining a high impedance at normal voltages. When a surge occurs, the impedance drops, allowing the Varistors to conduct current and shunt excess voltage away from sensitive components, thereby protecting the circuit from damage.

Varistors Naming Rules

Varistors are categorized based on their voltage ratings, energy handling capacity, and application type. The naming convention typically includes series identifiers and specific characteristics like maximum allowable voltage and varistor voltage.

Diagram explaining the naming system for Varistors 40D, including company code, element diameter, disc type, varistor voltage, and tolerance.

Zinc Oxide Varistor Model List

Here’s a summary of the 40D series zinc oxide varistors models.

Varistors User Reviews and Conclusion

User Reviews of Zinc Oxide Varistor

Users consistently rate the 40D series zinc oxide varistors highly for their reliability in protecting electronic devices from voltage surges. Their fast response time and high energy absorption capacity are particularly praised.

Varistors Conclusion

The 40D series Zinc Oxide Varistors are indispensable components in modern electronics, offering efficient and cost-effective protection against voltage surges. Their robust design, fast response, and high energy absorption make them a reliable choice for a wide range of applications.

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