PA Varistors - PA Series - Base Mount Varistor

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Series: PA

PA Series - Base Mount Varistor

Obsolete 2006-08-04

The PA Series of transient surge suppressors are metal-oxide varistors (MOVs) featuring a rigid base mount package construction, and are useful in applications which are subject to vibration.

The UL and CSA recognized varistors are available in a wide range of operating voltages, from 130V to 660 V V M(AC)RMS .
The base-mount package has a quick-connect tab terminal that provides a fast, secure lead attach.
The mounting base forms the second electrical connection, usually chassis ground.

Meeting rigid NEMA standards, PA series varistors have a creep and strike distance capability that minimizes breakdown along the package surface.

Electrical Characteristics

Access specifications, certifications, check availability and order parts below:

Check distributor stock availability by clicking on the [CHECK] link. View certification PDF files by clicking on the certification logo. View the part details by clicking on the part number. To order sample parts, click on the [ADD] link. Click on the 'Key' button to view definitions for each column header. Sort parts by clicking on the column you wish to sort by.

CatalogNo	V_MAX AC (V)	V_MAX DC (V)	W_TM (J)	(I_TM 1xAmps (A)	V_NDC (V)	V_NDC MIN (V)	V_NDC MAX (V)	V_c (V)	Stock	Sample Cart
V130PA20A Obsolete: 2006-08-04	130	175	70	6500	200	184	243	360	n/a	n/a
V130PA20C Obsolete: 2006-08-04	130	175	70	6500	200	184	220	325	n/a	n/a
V150PA20A Obsolete: 2006-08-04	150	200	80	6500	240	212	284	420	n/a	n/a
V150PA20C Obsolete: 2006-08-04	150	200	80	6500	240	212	243	360	n/a	n/a
V250PA20A Obsolete: 2006-08-04	250	330	130	6500	390	354	453	675	n/a	n/a
V250PA40A Obsolete: 2006-08-04	250	330	130	6500	390	354	453	675	n/a	n/a
V250PA40C Obsolete: 2006-08-04	250	330	130	6500	390	354	413	620	n/a	n/a
V275PA40A Obsolete: 2006-08-04	275	369	140	6500	430	389	494	740	n/a	n/a
V275PA40C Obsolete: 2006-08-04	275	369	140	6500	430	389	453	680	n/a	n/a
V320PA40A Obsolete: 2006-08-04	320	420	160	6500	510	462	565	850	n/a	n/a
V320PA40C Obsolete: 2006-08-04	320	420	160	6500	510	462	540	800	n/a	n/a
V350PA40A Obsolete: 2006-08-04	350	460	165	6500	559	500	618	910	n/a	n/a
V350PA40C Obsolete: 2006-08-04	350	460	165	6500	535	500	570	840	n/a	n/a
V420PA40A Obsolete: 2006-08-04	420	560	170	6500	680	610	790	1160	n/a	n/a
V420PA40C Obsolete: 2006-08-04	420	560	170	6500	680	610	690	1050	n/a	n/a
V480PA80A Obsolete: 2006-08-04	480	640	180	6500	750	670	860	1280	n/a	n/a
V480PA80C Obsolete: 2006-08-04	480	640	180	6500	750	670	790	1160	n/a	n/a
V510PA80A Obsolete: 2006-08-04	510	675	190	6500	820	735	963	1410	n/a	n/a
V510PA80C Obsolete: 2006-08-04	510	675	190	6500	820	735	860	1280	n/a	n/a
V575PA80A Obsolete: 2006-08-04	575	730	220	6500	910	805	1050	1560	n/a	n/a
V575PA80C Obsolete: 2006-08-04	575	730	220	6500	910	805	960	1410	n/a	n/a
V660PA100A Obsolete: 2006-08-04	660	850	250	6500	1050	940	1210	1820	n/a	n/a
V660PA100C Obsolete: 2006-08-04	660	850	250	6500	1050	940	1100	1650	n/a	n/a

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Application Notes

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Environmental Info

	AN9311 - The ABCs of MOVs The material in this application guide has been arranged in 3 parts for easy reference; Section A provides general guidelines on what types of MOV products are best suited for particular environments. Section B explains what Metal Oxide Varistors are and the basic function they perform. And section C helps clarify important information about MOVs for the design engineer, and answers questions that are asked most often. an9311.pdf (209 K)
	AN9767 - Littelfuse Varistors: Basic Properties, Terminology and Theory This application note describes the basic properties of varistors. Varistors are voltage dependent, nonlinear devices which have an electrical behavior similar to back-to-back zener diodes. The symmetrical, sharp breakdown characteristics enable the varistor to provide excellent transient suppression performance. Littelfuse_app-note_an9767.pdf (2,930 K)
	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. an9768.pdf (279 K)
	AN9769 - An Overview of Electromagnetic and Lightning Induced Voltage Transients This application note is an overview of the sources and nature of various transient overvoltages, and the problems that may result. an9769.pdf (356 K)
	AN9773 - Varistor Testing This application note details the common tests of varistor parameters and describes suitable test methods using simplified test circuits. All tests are performed at 25° C, unless otherwise specified. The test circuits and methods given are intended as a general guide. Since the tests frequently entail high voltages and currents, users must exercise appropriate safety precautions. an9773.pdf (443 K)
	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. ec608.pdf (597 K)
	EC638 - Littelfuse Varistor Design Examples This application note is a guide for selecting a varistor by describing common application examples, and illustrating the solution process to determine the appropriate varistor. The note also describes series/parallel connection rules. EC638.pdf (356 K)
	EC640 - Combining GDTs and MOVs for Surge Protection of AC Lines 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. EC640.pdf (158 K)

	Dongguan, BeiCe ISO 14001-2004 MOV Factory Littelfuse_Dongguan-BeiCe-MOV_ISO14001-2004.pdf (103 K)
	Dongguan, BeiCe ISO 9001-2000 MOV/MLV Factory Littelfuse_Dongguan-BeiCe-MOV_ISO9001-2000.pdf (773 K)
	Dongguan, BeiCe ISO TS16949 Littelfuse_Dongguan-BeiCe-MOV_ISO-TS16949.pdf (400 K)