ClassID:

216861

H02H9/042 - CPC Classification

Classification description:

Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage comprising means to limit the absorbed power or indicate damaged over-voltage protection device

Recent Application in this class:
#1
20260112525
2026-04-23

SYSTEMS, METHODS, AND COMPUTER PROGRAM PRODUCTS FOR DISTINGUISHING BETWEEN SURGE TRANSIENT AND TEMPORARY OVERVOLTAGE EVENTS PROCESSED BY A SURGE PROTECTIVE DEVICE

#2
20260095041
2026-04-02

SEMICONDUCTOR DEVICE

#3
20260074513
2026-03-12

LOW LEAKAGE ESD PROTECTION

#4
20250385510
2025-12-18

CURRENT TRANSFORMER SENSING WITH SATURATION PROTECTION

#5
20250347722
2025-11-13

ENERGY MANAGEMENT SYSTEMS WITH ELECTRICAL OVERSTRESS PROTECTION

#6
20250343406
2025-11-06

METHODS AND SYSTEMS FOR PROTECTION OF ELECTRIC NETWORKS AND DEVICES FROM EXTREME TRANSIENT ELECTROMAGNETIC SURGES

#7
20250323487
2025-10-16

ELECTRICAL RECEPTACLE FAULT PROTECTION

#8
20250300454
2025-09-25

ELECTRONIC PROTECTIVE DEVICE

#9
20250300453
2025-09-25

Voltage Clamping Circuit for Solid State Circuit Breakers

#10
20250210978
2025-06-26

DEVICE AND METHOD FOR PROTECTING A HARVESTING CIRCUIT AND/OR ENABLING ENERGY HARVESTING

#11
20250210977
2025-06-26

DEVICE AND METHOD FOR PROTECTING A MEASUREMENT CIRCUIT

#12
20250210969
2025-06-26

PRE-CHARGE CIRCUITS FOR DIRECT CURRENT BUS TRANSIENT VOLTAGE PROTECTION

#13
20250192607
2025-06-12

MONITORING SYSTEM AND METHOD FOR MONITORING A VOLTAGE NETWORK

#14
20250141218
2025-05-01

METHOD AND APPARATUS FOR LIMITING LIGHTNING OVERVOLTAGE OF DIRECT-CURRENT POWER TRANSMISSION LINE

#15
20250074198
2025-03-06

PROTECTION DEVICE FOR VOLTAGE-LIMITING ELEMENTS OF A LOW-VOLTAGE LINE THAT EXTENDS OUT OF A VEHICLE HIGH-VOLTAGE REGION

#16
20250062609
2025-02-20

Voltage Limiting Device for Constant Current Circuits

#17
20250038523
2025-01-30

PROGRAMMABLE DC POWER BUS OVER VOLTAGE PROTECTION

#18
20250038511
2025-01-30

ELECTRICAL RECEPTACLE FAULT PROTECTION

#19
20240421617
2024-12-19

AUTOMOTIVE INTEGRATED CIRCUIT

#20
20240332956
2024-10-03

Capacitive Functionality Test For Varistors Of A High-Voltage Protective Device For An On-Board Vehicle Electrical System

#21
20240258791
2024-08-01

Protection Circuit

#22
20240235173
2024-07-11

Electrical receptacle fault protection

#23
20240204515
2024-06-20

AN ELECTRICAL SURGE SUPPRESSOR

#24
20240204514
2024-06-20

METHOD AND PROCESSING UNIT FOR CHECKING AN OVERVOLTAGE PROTECTION CIRCUIT FOR AN ELECTRIC MACHINE, AND CONVERTER ARRANGEMENT

#25
20240204513
2024-06-20

HIGH-IMPEDANCE BUS DIFFERENTIAL PROTECTION

#26
20240178661
2024-05-30

Removable Surge Protector Configured for Standard Electrical Enclosure

#27
20240178660
2024-05-30

SURGE PROTECTION DEVICE

#28
20240162701
2024-05-16

SURGE PROTECTIVE DEVICE AND METHOD, AND AN ELECTRIC SYSTEM WITH SAID PROTECTIVE DEVICE

#29
20240159804
2024-05-16

WEARABLE DEVICE WITH ENERGY HARVESTING

#30
20240097436
2024-03-21

ELECTRONIC DEVICE AND METHOD FOR PROTECTING EQUIPMENT FROM VOLTAGE SURGE DAMAGE

#31
20240088649
2024-03-14

SURGE PROTECTIVE DEVICE ASSEMBLY MODULES

#32
20240045485
2024-02-08

SERVER POWER SUPPLY CIRCUIT AND SERVER

#33
20240022062
2024-01-18

Heating loop protective circuit, respiration heating circuit and respiration aiding equipment

#34
20240006878
2024-01-04

Pulsed high power RF protection using transient voltage suppression (TVS) diode

#35
20230402838
2023-12-14

Detecting and reporting the status of an overvoltage protection device

#36
20230402831
2023-12-14

Electrical receptacle fault protection

#37
20230396060
2023-12-07

CIRCUIT PROTECTION DEVICE

#38
20230378749
2023-11-23

Interference filter arrangement with surge protection

#39
20230375600
2023-11-23

Spark gap structures for detection and protection against electrical overstress events

#40
20230369847
2023-11-16

Electrostatic Discharge Protection Device with Integrated Series Resistors

#41
20230349967
2023-11-02

DEVICES AND METHODS FOR SURGE PROTECTION DEVICE MONITORING

#42
20230343539
2023-10-26

Active metal fuses for DC-EOS and surge protection

#43
20230275581
2023-08-31

Driver circuit

#44
20230231373
2023-07-20

Electrical receptacle fault protection

#45
20230221360
2023-07-13

Systems and methods for charge storage and providing power

#46
20230178980
2023-06-08

Electrostatic discharge protection device with integrated series resistors

#47
20230152833
2023-05-18

Systems and methods for managing energy-related stress in an electrical system

#48
20230099861
2023-03-30

Active metal fuses for DC-EOS and surge protection

#49
20230085333
2023-03-16

Surge protection system

#50
20230080367
2023-03-16

Surge protective device assembly modules

#51
20230026136
2023-01-26

Electrical receptacle fault protection

#52
20220353971
2022-11-03

MOSFET circuit, for example for use in a tapped linear driver, and surge protection method

#53
20220337150
2022-10-20

Spike suppression circuit and power converter and control method thereof

#54
20220329064
2022-10-13

Lightning protection apparatus and photovoltaic power generation system

#55
20220271027
2022-08-25

TVS diode circuit with high energy dissipation and linear capacitance

#56
20220252661
2022-08-11

Devices and methods for surge protection device monitoring

#57
20220229458
2022-07-21

Systems and methods for managing energy-related stress in an electrical system

#58
20220216626
2022-07-07

Surge protection module and related components and methods

#59
20220209522
2022-06-30

Electrical receptacle fault protection

#60
20220200261
2022-06-23

Electrical receptacle fault protection

#61
20220159808
2022-05-19

Luminaire System with SPD

#62
20220149615
2022-05-12

Power semiconductor switch clamping circuit

#63
20220132644
2022-04-28

Lighting relay panel features for improved safety and reliability

#64
20220082605
2022-03-17

Charge storage with electrical overstress protection

#65
20220052520
2022-02-17

Overvoltage protection circuit

#66
20220051845
2022-02-17

Miniaturized isolator modules for intrinsic safety applications

#67
20220045570
2022-02-10

Motor wiring member

#68
20220029412
2022-01-27

Electronic barrier device for intrinsically safe systems

#69
20220021204
2022-01-20

Surge protection circuit, lightning protector and electronic device

#70
20210396788
2021-12-23

Spark gap structures for detection and protection against electrical overstress events

#71
20210313800
2021-10-07

Control device for handling the transfer of electric power

#72
20210288491
2021-09-16

Surge protection apparatus having embedded fuse

#73
20210249850
2021-08-12

Electrical receptacle fault protection

#74
20210249823
2021-08-12

SYSTEMS AND METHODS USING ELECTRICAL RECEPTACLES FOR INTEGRATED POWER CONTROL, COMMUNICATION AND MONITORING

#75
20210249402
2021-08-12

TVS diode circuit with high energy dissipation and linear capacitance

#76
20210237783
2021-08-05

Track circuit surge protection

#77
20210234289
2021-07-29

SURGE PROTECTION MODULE AND RELATED COMPONENTS AND METHODS

#78
20210226659
2021-07-22

Systems and methods for radio frequency hazard protection for external load connections

#79
20210218244
2021-07-15

Multi-phase EMI and transient protection circuits and synchronous rectification control for compressors of refrigeration systems

#80
20210119437
2021-04-22

Electronic apparatus

#81
20210119433
2021-04-22

Intrinsically safe energy transmission unit for supplying an electrical device with increased power

#82
20210109556
2021-04-15

Systems and methods for managing energy-related stress in an electrical system

#83
20210057907
2021-02-25

Overvoltage absorption circuit and single-phase heric topology

#84
20210055341
2021-02-25

Devices and methods for surge protection device monitoring

#85
20210006065
2021-01-07

Technique to protect circuit from surge voltage

#86
20210006064
2021-01-07

Transient Surge Monitoring

#87
20200403402
2020-12-24

Overvoltage protective device for lightning protection

#88
20200402377
2020-12-24

Multifunctional smart holder and control method thereof

#89
20200388456
2020-12-10

Dead tank circuit breaker surge arrester

#90
20200366089
2020-11-19

Circuit arrangement for combined protection of a load from temporary and transient overvoltages

#91
20200366087
2020-11-19

Surge protection device for the protection of multiple DC or AC power lines

#92
20200366080
2020-11-19

Electrical receptacle fault protection

#93
20200343721
2020-10-29

High voltage clamps with transient activation and activation release control

#94
20200341922
2020-10-29

ELECTRONIC APPARATUS PROTECTION DEVICE AND METHOD

#95
20200335969
2020-10-22

Power module with integrated surge voltage limiting element

#96
20200321777
2020-10-08

Device and method for overvoltage protection

#97
20200321327
2020-10-08

Transient voltage suppression device with thermal cutoff

#98
20200235572
2020-07-23

Surge protection device

#99
20200168597
2020-05-28

RC-snubber element with high dielectric strength

#100
20200158771
2020-05-21

Storing charge associated with electrical overstress

#101
20200137855
2020-04-30

Lighting relay panel features for improved safety and reliability

#102
20200128650
2020-04-23

Lighting relay panel features for improved safety and reliability

#103
20200112168
2020-04-09

Surge protection circuit

#104
20200106267
2020-04-02

Low leakage transient overvoltage protection circuit using a series connected metal oxide varistor (MOV) and silicon controlled rectifier (SCR)

#105
20200091712
2020-03-19

Adjustable power limiter with integrated power detector

#106
20200091708
2020-03-19

Protection of an inductive element

#107
20200076188
2020-03-05

Surge protection apparatus

#108
20200067306
2020-02-27

SAFETY ELECTRONIC SWITCH

#109
20200059089
2020-02-20

Disconnection and switch-over device for overvoltage protection, particularly for DC systems

#110
20200028354
2020-01-23

Hybrid overvoltage protection device and assembly

#111
20190393698
2019-12-26

Clamping operation and apparatus for surge protection

#112
20190372340
2019-12-05

POWER SOURCE SURGE PROTECTOR HAVING FAULTY CONSTRUCTION PREVENTION FUNCTION AND FAULTY CONSTRUCTION DETERMINATION METHOD

#113
20190353694
2019-11-21

Apparatus for estimating lifetime of the SPD using discharge characteristics of the MOV

#114
20190348834
2019-11-14

Rectifier-based surge protection circuit

#115
20190326748
2019-10-24

Circuit breaker system with an internal voltage limiter

#116
20190293692
2019-09-26

Spark gap structures for detection and protection against electrical overstress events

#117
20190285692
2019-09-19

Devices and methods for surge protection device monitoring

#118
20190273377
2019-09-05

Systems and methods to suppress AC transient voltage and for AC powerline polarity reversal detection and alarm

#119
20190252876
2019-08-15

Selectable input transient voltage suppressor

#120
20190242928
2019-08-08

Intrinsically safe Zener diode barrier with indication

#121
20190222040
2019-07-18

Bistage temperature device using positive temperature coefficient material

#122
20190207387
2019-07-04

Overvoltage protection device with monitoring and communication functions

#123
20190207386
2019-07-04

SURGE PROTECTION DEVICE STRUCTURE

#124
20190204861
2019-07-04

Connection and disconnection differential surge limiter circuit for AC coupled transceiver

#125
20190199082
2019-06-27

Disconnecting device

#126
20190162785
2019-05-30

APPARATUS AND METHOD FOR MONITORING PERFORMANCE OF POWER LINE FILTER

#127
20190157855
2019-05-23

Dual mode phase-to-phase surge protective devices

#128
20190115745
2019-04-18

Space-limited protection module with at least two overvoltage protection elements in parallel current branches

#129
20190094077
2019-03-28

Temperature detection circuit, temperature sensor device and display device

#130
20190081474
2019-03-14

Bus mounted surge protection devices

#131
20190079550
2019-03-14

Devices and methods for dynamic overvoltage protection in regulators

#132
20190074679
2019-03-07

System electrostatic discharge circuit

#133
20190058326
2019-02-21

Electrontic barrier device for intrinsically safe systems

#134
20190036330
2019-01-31

Active limiting circuit for intrinsically safe equipment

#135
20190027927
2019-01-24

Surge protection circuit and surge protection method

#136
20180331534
2018-11-15

Apparatus and methods for overvoltage protection of electronic devices

#137
20180331093
2018-11-15

Protection circuit and operational method of the protection circuit, and semiconductor integrated circuit apparatus

#138
20180310791
2018-11-01

Electric shock guard for appliance

#139
20180309285
2018-10-25

Crowbar protection circuit with discharge rate control

#140
20180301889
2018-10-18

Electrostatic protection circuit

#141
20180301887
2018-10-18

Electronic protection device

#142
20180278051
2018-09-27

Electronic apparatus and overvoltage protection structure thereof

#143
20180257789
2018-09-13

Lightning protection system for an aircraft

#144
20180254631
2018-09-06

Power Receiving Unit For Charging While In Pre-Overvoltage Protection

#145
20180254625
2018-09-06

Arc fault circuit interrupter with surge suppression

#146
20180198275
2018-07-12

Adapter system for IC and transient voltage circuit

#147
20180175616
2018-06-21

Overvoltage protection circuit

#148
20180175606
2018-06-21

Electronic device protection circuit, corresponding device and method

#149
20180159321
2018-06-07

Fail open or fail short surge protector

#150
20180145504
2018-05-24

Reduction of geomagnetically induced currents by neutral switching

#151
20180138697
2018-05-17

Transient overvoltage protection system

#152
20180130794
2018-05-10

ELECTRONIC CIRCUIT, INTEGRATED CIRCUIT AND MOTOR ASSEMBLY

#153
20180120825
2018-05-03

Protection monitoring system with fault indicators

#154
20180115120
2018-04-26

Hybrid connector assembly with integrated overvoltage protection

#155
20180102640
2018-04-12

Integrated thermally protected varistor and discharge tube

#156
20180102639
2018-04-12

Interface circuits to monitor and prevent overstress damage

#157
20180097356
2018-04-05

Adjustable power limiter with integrated power detector

#158
20180054053
2018-02-22

Surge protection circuit

#159
20180033785
2018-02-01

Semiconductor device

#160
20180026440
2018-01-25

High voltage clamps with transient activation and activation release control

#161
20170373491
2017-12-28

Circuit assembly for protecting a unit to be operated from a supply network against overvoltage

#162
20170346276
2017-11-30

Chip including over-voltage and surge protection

#163
20170345534
2017-11-30

Space-saving isolating arrester

#164
20170324195
2017-11-09

Systems and methods using electrical receptacles for integrated power control, communication and monitoring

#165
20170315575
2017-11-02

Selectable input transient voltage suppressor

#166
20170288396
2017-10-05

Varistor failure detector and method

#167
20170279269
2017-09-28

Overvoltage protection apparatus with monitoring function

#168
20170237253
2017-08-17

Data interface with overvoltage protection for two-way digital control bus system

#169
20170171954
2017-06-15

Electronic control for high voltage systems

#170
20170170652
2017-06-15

Protection circuit assembly and method for high voltage systems

#171
20170163030
2017-06-08

Shared transient voltage suppressor having built-in-test capability for solid state power controllers

#172
20170155244
2017-06-01

Transient voltage suppressor having built-in-test capability for solid state power controllers

#173
20170141567
2017-05-18

Power device with overvoltage arrester

#174
20170117700
2017-04-27

Surge protective device and surge protective system

#175
20170104325
2017-04-13

Electrical receptacle fault protection

#176
20170012425
2017-01-12

Combined device for electrical protection against transient overvoltages and monitoring of an electrical installation

#177
20160372919
2016-12-22

Apparatus for checking damage to surge protector and automatically changing surge protector

#178
20160352318
2016-12-01

Control of a clamp circuit during transient conditions

#179
20160352093
2016-12-01

Overvoltage protection device with leakage current cut-off

#180
20160344182
2016-11-24

Low profile surge protector

#181
20160329703
2016-11-10

Redundant over-voltage protection/power distribution system for telecommunication systems

#182
20160322807
2016-11-03

Built-in test circuits for transient voltage protection devices

#183
20160313389
2016-10-27

Devices and methods for surge protection device monitoring

#184
20160285255
2016-09-29

Electrical overstress recording and/or harvesting

#185
20160276826
2016-09-22

Overvoltage protection device

#186
20160261736
2016-09-08

Communication module

#187
20160261106
2016-09-08

Monitoring device and surge arrester system

#188
20160261105
2016-09-08

Electrostatic protection circuit

#189
20160248244
2016-08-25

Overvoltage protection device

#190
20160211752
2016-07-21

Intrinsically safe voltage limiting shunt regulator circuit

#191
20160197468
2016-07-07

Surge protective devices

#192
20160161547
2016-06-09

Method of detecting metal oxide varistor (MOV) failure within a surge protection device

#193
20160141867
2016-05-19

Circuit for protection against overvoltages

#194
20160139617
2016-05-19

Adjustable non-dissipative voltage boosting snubber network

#195
20160097803
2016-04-07

Built in test circuit for transient voltage suppressor devices

#196
20160087431
2016-03-24

Power supply with surge voltage protection

#197
20160087430
2016-03-24

Overvoltage protection for NFC devices

#198
20160072271
2016-03-10

Arc fault circuit interrupter with surge suppression

#199
20160069166
2016-03-10

Downhole tool capable of withstanding high temperatures

#200
20160064924
2016-03-03

System and method for isolating and protecting a PoE (power over ethernet) device

#201
20160064922
2016-03-03

Surge reduction filter

#202
20160020605
2016-01-21

Surge reduction filter

#203
20150364916
2015-12-17

Surge protection device for multi-protection mode communications

#204
20150340854
2015-11-26

Safety switching device with a safe power supply unit

#205
20150311702
2015-10-29

SAFE POWER SOCKET AND POWER EXTENSION DEVICE HAVING THE SAME

#206
20150303012
2015-10-22

Complex protection device for blocking abnormal state of current and voltage

#207
20150288174
2015-10-08

Electrostatic discharge protection circuit with a fail-safe mechanism

#208
20150255943
2015-09-10

High power fiber laser safety control system

#209
20150207314
2015-07-23

PROTECTING DEVICE FOR PROTECTING A CIRCUIT AGAINST OVERVOLTAGE AND POWER SUPPLY MEMBER COMPRISING SUCH A DEVICE

#210
20150102739
2015-04-16

Lighting device

#211
20150098158
2015-04-09

Intrinsically safe voltage limiting shunt regulator circuit

#212
20150069852
2015-03-12

Transmission of signals through a non-contact interface

#213
20150049406
2015-02-19

Electrostatic discharge protection circuit arrangement, electronic circuit and ESD protection method

#214
20150022932
2015-01-22

Fault-tolerant self-indicating surge protection system for aircraft

#215
20150015243
2015-01-15

Circuit assembly for the state monitoring and logging of overvoltage protection devices or overvoltage protection systems

#216
20150009596
2015-01-08

Device of protection against transient electrical overvoltages

#217
20140340046
2014-11-20

Protective element, protective element fabrication method, and battery module in which protective element is embedded

#218
20140321018
2014-10-30

Excess voltage protection apparatus and diagnostic method for multi-stage excess voltage protection apparatuses

#219
20140306714
2014-10-16

Transient voltage suppression protection circuit including built in testing

#220
20140293493
2014-10-02

Overvoltage protection device

#221
20140254051
2014-09-11

Devices and methods for calibrating and operating a snapback clamp circuit

#222
20140236319
2014-08-21

Protection monitoring system with fault indicators

#223
20140233136
2014-08-21

Electrical protection device and method

#224
20140218834
2014-08-07

SURGE ARRESTER WITH A CAGE DESIGN

#225
20140218201
2014-08-07

Overvoltage protection device with a measuring device for monitoring overvoltage protection elements

#226
20140211349
2014-07-31

Electrostatic discharge protection circuit and method thereof

#227
20140168833
2014-06-19

Surge protection device

#228
20140153146
2014-06-05

Connection apparatus circuit and high voltage surge protection method thereof

#229
20140139349
2014-05-22

Systems and methods for detecting and communicating failure of integral surge suppression in drive systems for downhole equipment

#230
20140126092
2014-05-08

ELECTRICAL SURGE SUPPRESSOR

#231
20140117872
2014-05-01

Adjustable non-dissipative voltage boosting snubber network

#232
20140092513
2014-04-03

Overvoltage protector

#233
20140055895
2014-02-27

Voltage surge and overvoltage protection by distributed clamping device dissipation

#234
20140049869
2014-02-20

CIRCUIT INTERRUPTER WITH IMPROVED SURGE SUPPRESSION

#235
20130321963
2013-12-05

ESD protection circuit

#236
20130314829
2013-11-28

Switching device

#237
20130286527
2013-10-31

Communication line isolator

#238
20130271890
2013-10-17

Compact transient voltage surge suppression device

#239
20130270916
2013-10-17

Systems and methods for limiting voltage on an auxiliary bus

#240
20130258541
2013-10-03

Method and system for lightning protection with distributed transient voltage suppression

#241
20130250469
2013-09-26

USE OF FUSES TO CONNECT PARALLEL COLUMNS OF METAL OXIDE VARISTORS

#242
20130242443
2013-09-19

DC power surge protector

#243
20130222958
2013-08-29

System and method for providing surge protection

#244
20130208387
2013-08-15

Reduced let through voltage transient protection or suppression circuit

#245
20130176653
2013-07-11

Over-voltage protection device for resonant wireless power reception device and method for controlling the over-voltage protection device

#246
20130155561
2013-06-20

OVER VOLTAGE PROTECTION CIRCUIT AND DRIVER CIRCUIT USING THE SAME

#247
20130154362
2013-06-20

Power line communications system, power line communication device, and connector device

#248
20130128398
2013-05-23

Serial surge suppression and overload protection optimization device

#249
20130114168
2013-05-09

SURGE PROTECTION

#250
20130100720
2013-04-25

Power converter systems and methods of operating a power converter system

#251
20130093595
2013-04-18

Device and method for displaying the lifecycle of a surge protection device

#252
20130063845
2013-03-14

Overvoltage protection equipment

#253
20130050879
2013-02-28

High efficiency bridgeless PFC converter and method

#254
20130027819
2013-01-31

Circuit interrupter with improved surge suppression

#255
20130021712
2013-01-24

Overvoltage protection method and device

#256
20120316070
2012-12-13

Superconducting fault current limiter monitoring

#257
20120300352
2012-11-29

Static surge protection device

#258
20120300350
2012-11-29

Gradually reducing resistive clamp

#259
20120268855
2012-10-25

Surge protection apparatus and method using the same

#260
20120243138
2012-09-27

Surge protector

#261
20120239321
2012-09-20

SURGE ARRESTOR CONDITION MONITORING

#262
20120227229
2012-09-13

Surface mount multi-layer electrical circuit protection device with active element between PPTC layers

#263
20120224291
2012-09-06

Electrical circuit with surge protection monitoring

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Built-in test for an overvoltage protection circuit

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Surge protection circuit in three-phase four-wire circuit

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Overvoltage protection for inverters that comprise an EMC filter at their input end

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Input power port protection component

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Protection circuit

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Clamping control circuit for hybrid surge protection devices

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CIRCUIT PROTECTIVE DEVICE

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Overvoltage protector

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Protective device with improved surge protection

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Voltage surge and overvoltage protection with current surge protection

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Voltage surge and overvoltage protection using prestored voltage-time profiles

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Voltage surge and overvoltage protection with RC snubber current limiter

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Surge energy transfer circuit

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Over-voltage protection

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Protection Device

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Tri-Mode Over-Voltage Protection and Disconnect Circuit Apparatus and Method

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Protecting apparatus

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Transient voltage protection circuit and system incorporating the same

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Swell sustaining transient voltage surge suppressor

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Protection Device

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Potted electrical circuit with protective insulation

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Multiple operating voltage electrical surge protection apparatus

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Controlled convection thermal disconnector

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Disconnector and overvoltage protection device