14D511K MOV Varistor

The 14D511K is a 14mm metal oxide varistor developed for reliable protection against transient overvoltage in electrical and electronic systems. Its larger disc size enables improved energy absorption, making it suitable for circuits exposed to higher surge stress.

This model is typically applied in AC power lines, industrial control systems and power distribution equipment where enhanced surge capability is required.

With a nominal varistor voltage of 510V, the device effectively limits voltage spikes caused by switching events, lightning disturbances and unstable grid conditions.

Electrical Performance:

Varistor Voltage (1mA): 510V ±10%

Maximum Continuous Voltage: 320VAC / 415VDC

Clamping Voltage (8/20μs): 845V

Peak Surge Current (8/20μs): 4.5kA

Surge Energy (10/1000μs): 140J

Capacitance (1kHz): approx. 380pF

Mechanical Details:

Disc Diameter: 14mm

Lead Configuration: Radial

Lead Spacing: 7.5mm

Mounting: Through Hole PCB

Packaging: Bulk

Environmental Conditions:

Operating Temperature: -40°C to +105°C

Storage Temperature: -40°C to +125°C

Compliance:

RoHS Compliant

MOV Type, ±10% tolerance

Application Fields:

Power supply input protection

Industrial automation equipment

Motor drives and inverters

Energy distribution systems

Electronic control modules

This varistor enhances system reliability by suppressing transient voltage spikes and reducing component stress.

Why Choose Our 14D511K:

* Suitable alternative to mainstream brands such as TDK EPCOS for second sourcing

* Higher energy capability enabled by 14mm disc structure

* Stable electrical characteristics with consistent production quality

* Designed for industrial environments with repeated surge exposure

* Flexible supply with fast delivery and engineering support

* Samples available for evaluation and validation

Reference Models:

S14K320 (TDK EPCOS)

B72214S0321K101 (TDK EPCOS)

Disclaimer:

All trademarks, brand names and model numbers are the property of their respective owners. These references are for comparison purposes only and do not imply direct equivalence or endorsement.

For datasheet, quotation or sample request:

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