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NIC COMPONENTS CORP. www.niccomp.com www.lowESR.com

www.RFpassives.com

www.SMTmagnetics.com

SPECIFICATIONS ARE SUBJECT TO CHANGE

Leaded Metal Oxide Varistors

NVR Series

Type

Description

Type 2

Permanently connected SPDs intended for installation on the load side of the service equipment overcurrent

device; including SPDs located at the branch panel.

Type 3

Point of utilization SPDs, installed at a minimum conductor length of 10 meters (30 feet) from the electrical service

panel to the point of utilization, for example cord connected, direct plug-in, receptacle type and SPDs installed at

the utilization equipment being protected. See marking in 64.2. The distance (10 meters) is exclusive of conductors

provided with or used to attach SPDs.

TABLE 1 - DEFINITION OF UL SPD APPLICATION TYPES

Type 3 (Minimum of 30 feet of

conductor between service

disconnect and SPD)

Type 2 (SPD located after

service disconnect)

Type 3 applications include SPDs that are cord-connected, plugged directly into the socket or integrated in the outlet. They must be installed a

minimum of 10 meters (30 feet) from the electrical service panel. An example would be a home appliance that is installed beyond 10 meters (30

feet) from the electrical service panel, and it uses varistors in power in for surge protection, the Varistor should meet SPD Type 3.

Type 2 applications include indoor AC applications located after the service disconnection.

TABLE 2 - Other applications as described in the table below:

EXAMPLES OF SPD APPLICATION TYPES

Intended End-Use

(SPD Type)

NVR Sizes

(Values)

Part Diameter

Voltage Protective Rating

Test & Waveform

Waveform Peak

Voltage (Vp)

Peak Current

(Ap)

Other

Applications

NVR05 (180 ~ 680)

5mm

600V (1.2x50uS*)

50V (8x20uS**)

NVR05 (820 ~ 471)

NVR10 (180 ~ 680)

5mm

10mm

3000V (1.2x50uS*)

250V (8x20uS**)

NVR7 (180 ~ 680)

7mm

1200V (1.2x50uS*)

100V (8x20uS**)

NVR7 (820 ~ 821)

NVR14 (180 ~ 680)

7mm

14mm

1000V (1.2x50uS*)

500V (8x20uS**)

NVR7 (820 ~ 821)

NVR14 (180 ~ 680)

7mm

14mm

2000V (1.2x50uS*)

1000V (8x20uS**)

For SPD

Type 3

NVR14 (820 ~ 182)

NVR20 (820 ~ 182)

14mm

20mm

6000V (1.2x50uS*)

3000V (8x20uS**)

Notes:

* 1.2x50uS - 1.2uSec. rise time and 50uSec fall time

** 8x20uS - 8uSec. rise time and 20uSec fall time

Industry standard benchmark to quantify the component’s response to a typically fast transient