TDK B72214S2381K101 620V MOV Varistor with 5KA Surge Current and ThermoFuse Protection for Industrial Power Systems
Specifications
Manufacturer:
TDK
Product Number:
B72214S2381K101
Description:
VARISTOR 620V 5KA DISC 14MM
Highlight:
620V MOV varistor with thermo fuse
,5KA surge current varistor for industrial
,TDK varistor for power systems
Introduction
The B72214S2381K101 - 385VAC Thermally Protected High-Energy MOV
Product Overview
The B72214S2381K101 is a 385VAC, thermally protected high-energy Metal Oxide Varistor (MOV), primarily designed for robust surge protection in high-power electrical equipment.
Core Functions
- Nonlinear Voltage Clamping: Exhibits extremely high resistance under normal operating voltages, and rapidly switches to low resistance to clamp overvoltage spikes to a safe level.
- High Surge Absorption: Capable of handling maximum surge current (Imax) of 5,000A (8/20 µs) and absorbing up to 136J of energy (2ms pulse).
- Bidirectional Protection: Provides protection against both positive and negative voltage transients.
- Fast Response: Nanosecond-level response time to safeguard sensitive circuits.
- Self-Protective (ThermoFuse™): Integrated thermal protection to prevent thermal runaway under sustained overvoltage conditions.
Key Electrical Parameters
| Parameter | Value |
|---|---|
| Nominal Varistor Voltage (V1mA) | 620V (±10% tolerance) |
| Max. Continuous AC Voltage (Vrms) | 385VAC |
| Max. Continuous DC Voltage (Vdc) | 505VDC |
| Clamping Voltage (Vc @ 5A) | 1025V |
Typical Applications
- Industrial Power Supplies & Inverters: AC/DC input protection for high-power industrial power supplies, frequency converters, and UPS systems.
- Photovoltaic (PV) Systems: Overvoltage protection for solar inverters and combiner boxes.
- Industrial Controls & Automation: Surge protection for PLCs, motor drives, and factory automation equipment.
- Smart Meters & Energy Meters: Protection for utility metering devices.
- Telecommunication Equipment: Surge protection for telecom infrastructure and high-voltage communication lines.
- Household Appliances: High-power appliances such as air conditioners, washing machines, and ovens.
- Lighting Systems: LED drivers, HID ballasts, and high-intensity industrial lighting.
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