V251NA34 - NA Series

Series: NA
Availability: Obsolete

Obsolete
Questions? Contact Littelfuse Support
External overview image
Roll Over to Zoom
Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The NA Series of transient surge suppressors are varistors (MOVs) in square disc form, intended for special industrial high-energy applications requiring unique electrical contact or packaging methods provided by the customer.
  • The electrode finish of these devices is solderable and can also be used with pressure contacts.
  • Discs may also be stacked.
The NA Series varisor is a square 34mm device, with thicknesses ranging from 1.8mm minimum for the 130V device to 7.5mm maximum for the 750V device. For information on mounting considerations refer to Application Note AN 8820.
 
This disc is also available with encapsulation and PCB leads.

Property (Mouseover for details) Value
VMAX AC (V) 250
Max Rated DC Voltage 330
Surge Energy (WTM) (J) 370
Peak Pulse Current (ITM) 1xAmps (A) 40000
Nominal DC Voltage (VNDC) (V) 390
VNDC MIN (V) 354
VNDC MAX (V) 429
Max Clamp Voltage (Vc) (V) 650
Clamp Polarity Bi-directional
Typ Capacitance (pF) 5000
Replaced By Part Number Contact Littelfuse

pdficon Varistor NA Datasheet

The NA Series of transient surge suppressors are varistors (MOVs) in square disc form intended for special industrial high-energy applications requiring unique electrical contact or packaging methods provided by the customer...
pdficon Combining GDTs and MOVs for Surge Protection of AC Power Lines Application Note

This application note illustrates how to design high performance cost-effective surge protection for equipment connected to AC power lines. The role of gas discharge tube (GDT) surge arresters specifically designed for AC power line protection is also be discussed.
pdficon EC608 Considerations for Selecting Littelfuse MOVs and Fuses for Industrial Motor Applications

This application note discusses the first level considerations for applying both Littelfuse Industrial AC Line Metal Oxide Varistors and associated AC line Fuses with a motor protection example.
pdficon AN9768 Transient Suppression Devices and Principles

This application note discusses the two major categories of transient suppressors: a) those that attenuate transients thus preventing their propagation into the sensitive circuit; and b) those that divert transients away from sensitive loads and so limit the residual voltages.
To request product environmental information, please complete the Product Environmental Information Request Form.