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$50.00
Electrical Plug Cover Lockout - Large - Master Lock - Pack Of 2
Uline
$50.00
Electrical Plug Cover Lockout - Large - Master Lock - Pack Of 2
Uline
$40.00
Electrical Plug Cover Lockout - Small - Master Lock - Pack Of 2
Uline
$40.00
Electrical Plug Cover Lockout - Small - Master Lock - Pack Of 2
Uline
$43.20
Leviton 20 Amp, 125 Volt, Decora Plus Duplex Surge Suppressor Receptacle, Straight Blade, Industrial Grade, Surge With Indicator Light, 7380-W, White
Amazon.com
91
Free shipping
$43.20
Leviton 20 Amp, 125 Volt, Decora Plus Duplex Surge Suppressor Receptacle, Straight Blade, Industrial Grade, Surge With Indicator Light, 7380-W, White
Amazon.com
$8.99
10Kv LED Surge Protector - 100-277 VAC
Industrial Commercial Lighting
$8.99
10Kv LED Surge Protector - 100-277 VAC
Industrial Commercial Lighting
$67.99
Showmecables AC Surge Protector SPD I2R-75K Module 120 Vac MOV 75 Ka, UL 1449 4th Ed., TAA
ShowMeCables.com
$67.99
Showmecables AC Surge Protector SPD I2R-75K Module 120 Vac MOV 75 Ka, UL 1449 4th Ed., TAA
ShowMeCables.com
$67.98
Siemens QSPD2A035B 35 Kamp Boltshield Indoor Surge Protective Device
Amazon.com
112
Free shipping
$67.98
Siemens QSPD2A035B 35 Kamp Boltshield Indoor Surge Protective Device
Amazon.com
$399.00
EMP Shield - Home EMP, Surge, & Lightning Protection (SP-120-240-W) Solar Flare And Surge Protection
EMP Shield LLC
$399.00
EMP Shield - Home EMP, Surge, & Lightning Protection (SP-120-240-W) Solar Flare And Surge Protection
EMP Shield LLC
$29.99
$31.99
Refrigmatic MEGA, 2 in 1 Electronic Voltage & Surge Protector For Two Door Refrigerators 27 Cu. Ft. Or More - 1005J
Amazon.com
917
$29.99
$31.99
Refrigmatic MEGA, 2 in 1 Electronic Voltage & Surge Protector For Two Door Refrigerators 27 Cu. Ft. Or More - 1005J
Amazon.com
$59.99
Panamax MIW-SURGE-1G In-Wall Surge Protector
Crutchfield
36
$59.99
Panamax MIW-SURGE-1G In-Wall Surge Protector
Crutchfield
$1,750.00
Ilsco Xe-100-3Y2X-B 3Ph Surge Protective Device
New Feedonomics Feed - ARC 8/12/2025
$1,750.00
Ilsco Xe-100-3Y2X-B 3Ph Surge Protective Device
New Feedonomics Feed - ARC 8/12/2025
$399.00
EMP Shield - Home Surge & Lightning Protection (SP-120-240-W) Solar Flare And Surge Protection
EMP Shield LLC
$399.00
EMP Shield - Home Surge & Lightning Protection (SP-120-240-W) Solar Flare And Surge Protection
EMP Shield LLC
$1,170.00
Ilsco Se-100-3Y2X-B 3Ph Surge Protective Device
New Feedonomics Feed - ARC 8/12/2025
$1,170.00
Ilsco Se-100-3Y2X-B 3Ph Surge Protective Device
New Feedonomics Feed - ARC 8/12/2025
$220.00
Power Surge Protective Device (SPD): 20 kA (PN# 908170)
Automation Direct
$220.00
Power Surge Protective Device (SPD): 20 kA (PN# 908170)
Automation Direct
$822.30
Intermatic L10f23d1dg2 Surge Protective Device, 4-Mode, 120/240 Panelguard
New Feedonomics Feed - ARC 8/12/2025
$822.30
Intermatic L10f23d1dg2 Surge Protective Device, 4-Mode, 120/240 Panelguard
New Feedonomics Feed - ARC 8/12/2025
$25.99
Southwire Yellow Jacket 1 Outlets Surge Protector Black 314 J
Ace Hardware
$25.99
Southwire Yellow Jacket 1 Outlets Surge Protector Black 314 J
Ace Hardware
$49.50
Modular Circuit Protector: overcurrent protection, 2A (PN# REX-TA2-24-2A)
Automation Direct
$49.50
Modular Circuit Protector: overcurrent protection, 2A (PN# REX-TA2-24-2A)
Automation Direct
$2,144.62
TVS5EMA12A SCHNEIDER ELECTRIC - Panel Accessories & Surge Arrestor/Suppressor Supplies
Radwell.com
$2,144.62
TVS5EMA12A SCHNEIDER ELECTRIC - Panel Accessories & Surge Arrestor/Suppressor Supplies
Radwell.com
$1,853.35
TVS4EBA12A SCHNEIDER ELECTRIC - Panel Accessories & Surge Arrestor/Suppressor Supplies
Radwell.com
$1,853.35
TVS4EBA12A SCHNEIDER ELECTRIC - Panel Accessories & Surge Arrestor/Suppressor Supplies
Radwell.com
$263.00
ACP100MN PROTECTION TECHNOLOGY - Panel Accessories & Surge Arrestor/Suppressor Supplies
Radwell.com
$263.00
ACP100MN PROTECTION TECHNOLOGY - Panel Accessories & Surge Arrestor/Suppressor Supplies
Radwell.com
$1,584.13
20 A Surge Protection Device, 120/240V 1-Phase 3-Wire Voltage Rating, 50/60 Hz, 50 KA Surge Current/
Larson Electronics
$1,584.13
20 A Surge Protection Device, 120/240V 1-Phase 3-Wire Voltage Rating, 50/60 Hz, 50 KA Surge Current/
Larson Electronics
$71.00
Siemens QSPD2A035B 120/240V 1-Phase 3-Wire Surge Protector Device BY BUYRITE ELECTRIC
BuyRite Electric
112
$71.00
Siemens QSPD2A035B 120/240V 1-Phase 3-Wire Surge Protector Device BY BUYRITE ELECTRIC
BuyRite Electric
$377.97
ICM Controls Sentry 3N1 Disconnect With Internal Voltage Monitoring And Surge Protection New SENTRY-3N1
FactoryPure
$377.97
ICM Controls Sentry 3N1 Disconnect With Internal Voltage Monitoring And Surge Protection New SENTRY-3N1
FactoryPure
$218.00
Morningstar GFPD-150V Ground Fault Protection Device For 150 Volt PV System Breakers
NAZ Solar Electric
$218.00
Morningstar GFPD-150V Ground Fault Protection Device For 150 Volt PV System Breakers
NAZ Solar Electric
$281.27
FS140 Whole House Surge Protector Rated For 140,000 Amps IP66 Waterproof For Indoor And Outdoor Use Siemens Electric Box
Home Depot
Free shipping
$281.27
FS140 Whole House Surge Protector Rated For 140,000 Amps IP66 Waterproof For Indoor And Outdoor Use Siemens Electric Box
Home Depot
$174.89
Mersen Surge Protection Device: Single Phase, 120V AC, 1 Poles, 2 Wires, L-N, 175 V AC, 600V (L-N) Model: stp120p07m
Grainger
$174.89
Mersen Surge Protection Device: Single Phase, 120V AC, 1 Poles, 2 Wires, L-N, 175 V AC, 600V (L-N) Model: stp120p07m
Grainger
$17,928.44
SQUARE D | Surge Protection Device, Surgelogic, HL, 240Ka, 480Y/277VAC, 3 Phase, 4 Wire, SPD Type 2 | Red/Green | HL4IMA24C
Crescent Electric Supply Company
$17,928.44
SQUARE D | Surge Protection Device, Surgelogic, HL, 240Ka, 480Y/277VAC, 3 Phase, 4 Wire, SPD Type 2 | Red/Green | HL4IMA24C
Crescent Electric Supply Company
$206.00
Power Surge Protective Device (SPD): 20 kA (PN# STXR208Y05N)
Automation Direct
$206.00
Power Surge Protective Device (SPD): 20 kA (PN# STXR208Y05N)
Automation Direct
$1,703.33
Nvent Erico Surge Protection Device: Single Phase, 120/240V AC, 1000V (L-L)/600V (L-G, L-N, N-G), 4 Model: TDX200C120/240
Grainger
$1,703.33
Nvent Erico Surge Protection Device: Single Phase, 120/240V AC, 1000V (L-L)/600V (L-G, L-N, N-G), 4 Model: TDX200C120/240
Grainger
$259.13
Schneider Electric Mains Surge Protection - A9L20601
Tameson.com
$259.13
Schneider Electric Mains Surge Protection - A9L20601
Tameson.com
$163.00
Siemens Boltshield QSPD 65-Ka Indoor Surge Protective Device In Black | QSPD2A065P
Lowe's
34
$163.00
Siemens Boltshield QSPD 65-Ka Indoor Surge Protective Device In Black | QSPD2A065P
Lowe's
$801.06
ICM Controls 3VMS 3-Phase Surge Protector And Voltage Monitor New 3VMS
FactoryPure
5
$801.06
ICM Controls 3VMS 3-Phase Surge Protector And Voltage Monitor New 3VMS
FactoryPure
$31,941.33
20 KA Surge Protection Device, 208Y/120 3-Phase 4-Wire Voltage Rating, 50/60 Hz, 300 KA Surge Curren
Larson Electronics
$31,941.33
20 KA Surge Protection Device, 208Y/120 3-Phase 4-Wire Voltage Rating, 50/60 Hz, 300 KA Surge Curren
Larson Electronics
$89.87
Hubbell HBL17CM50 - Control/Signal Device Industrial Electrical Protection
Essential Electric Supply
$89.87
Hubbell HBL17CM50 - Control/Signal Device Industrial Electrical Protection
Essential Electric Supply
$177.33
ICM Controls ICM530 3-Phase Surge Protective Device 240VAC/120/208VAC
Voomi Supply
2
$177.33
ICM Controls ICM530 3-Phase Surge Protective Device 240VAC/120/208VAC
Voomi Supply
$16.00
Circuit Breaker Lockout - Oversized - Master Lock
Uline
$16.00
Circuit Breaker Lockout - Oversized - Master Lock
Uline
$53.00
Siemens FSPD036 External FSPD 36 KA Surge Protection BY BUYRITE ELECTRIC
BuyRite Electric
104
$53.00
Siemens FSPD036 External FSPD 36 KA Surge Protection BY BUYRITE ELECTRIC
BuyRite Electric
Surge Protective Devices - Electrical Safety Foundation International
Surge Protective Devices - Electrical Safety Foundation International
May 30, 2019
esfi.org
Best practice for using surge protective devices (SPDs) and RCDs together
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Oct 7, 2016
electrical-engineering-portal.com
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Shop electrical protection devices

Sponsored
About our ads
$50.00
Electrical Plug Cover Lockout - Large - Master Lock - Pack Of 2
Uline
$50.00
Electrical Plug Cover Lockout - Large - Master Lock - Pack Of 2
Uline
$40.00
Electrical Plug Cover Lockout - Small - Master Lock - Pack Of 2
Uline
$40.00
Electrical Plug Cover Lockout - Small - Master Lock - Pack Of 2
Uline
$43.20
Leviton 20 Amp, 125 Volt, Decora Plus Duplex Surge Suppressor Receptacle, Straight Blade, Industrial Grade, Surge With Indicator Light, 7380-W, White
Amazon.com
91
Free shipping
$43.20
Leviton 20 Amp, 125 Volt, Decora Plus Duplex Surge Suppressor Receptacle, Straight Blade, Industrial Grade, Surge With Indicator Light, 7380-W, White
Amazon.com
$8.99
10Kv LED Surge Protector - 100-277 VAC
Industrial Commercial Lighting
$8.99
10Kv LED Surge Protector - 100-277 VAC
Industrial Commercial Lighting
$67.99
Showmecables AC Surge Protector SPD I2R-75K Module 120 Vac MOV 75 Ka, UL 1449 4th Ed., TAA
ShowMeCables.com
$67.99
Showmecables AC Surge Protector SPD I2R-75K Module 120 Vac MOV 75 Ka, UL 1449 4th Ed., TAA
ShowMeCables.com
$67.98
Siemens QSPD2A035B 35 Kamp Boltshield Indoor Surge Protective Device
Amazon.com
112
Free shipping
$67.98
Siemens QSPD2A035B 35 Kamp Boltshield Indoor Surge Protective Device
Amazon.com
$399.00
EMP Shield - Home EMP, Surge, & Lightning Protection (SP-120-240-W) Solar Flare And Surge Protection
EMP Shield LLC
$399.00
EMP Shield - Home EMP, Surge, & Lightning Protection (SP-120-240-W) Solar Flare And Surge Protection
EMP Shield LLC
$29.99
$31.99
Refrigmatic MEGA, 2 in 1 Electronic Voltage & Surge Protector For Two Door Refrigerators 27 Cu. Ft. Or More - 1005J
Amazon.com
917
$29.99
$31.99
Refrigmatic MEGA, 2 in 1 Electronic Voltage & Surge Protector For Two Door Refrigerators 27 Cu. Ft. Or More - 1005J
Amazon.com
$59.99
Panamax MIW-SURGE-1G In-Wall Surge Protector
Crutchfield
36
$59.99
Panamax MIW-SURGE-1G In-Wall Surge Protector
Crutchfield
$1,750.00
Ilsco Xe-100-3Y2X-B 3Ph Surge Protective Device
New Feedonomics Feed - ARC 8/12/2025
$1,750.00
Ilsco Xe-100-3Y2X-B 3Ph Surge Protective Device
New Feedonomics Feed - ARC 8/12/2025
$399.00
EMP Shield - Home Surge & Lightning Protection (SP-120-240-W) Solar Flare And Surge Protection
EMP Shield LLC
$399.00
EMP Shield - Home Surge & Lightning Protection (SP-120-240-W) Solar Flare And Surge Protection
EMP Shield LLC
$1,170.00
Ilsco Se-100-3Y2X-B 3Ph Surge Protective Device
New Feedonomics Feed - ARC 8/12/2025
$1,170.00
Ilsco Se-100-3Y2X-B 3Ph Surge Protective Device
New Feedonomics Feed - ARC 8/12/2025
$220.00
Power Surge Protective Device (SPD): 20 kA (PN# 908170)
Automation Direct
$220.00
Power Surge Protective Device (SPD): 20 kA (PN# 908170)
Automation Direct
$822.30
Intermatic L10f23d1dg2 Surge Protective Device, 4-Mode, 120/240 Panelguard
New Feedonomics Feed - ARC 8/12/2025
$822.30
Intermatic L10f23d1dg2 Surge Protective Device, 4-Mode, 120/240 Panelguard
New Feedonomics Feed - ARC 8/12/2025
$25.99
Southwire Yellow Jacket 1 Outlets Surge Protector Black 314 J
Ace Hardware
$25.99
Southwire Yellow Jacket 1 Outlets Surge Protector Black 314 J
Ace Hardware
$49.50
Modular Circuit Protector: overcurrent protection, 2A (PN# REX-TA2-24-2A)
Automation Direct
$49.50
Modular Circuit Protector: overcurrent protection, 2A (PN# REX-TA2-24-2A)
Automation Direct
$2,144.62
TVS5EMA12A SCHNEIDER ELECTRIC - Panel Accessories & Surge Arrestor/Suppressor Supplies
Radwell.com
$2,144.62
TVS5EMA12A SCHNEIDER ELECTRIC - Panel Accessories & Surge Arrestor/Suppressor Supplies
Radwell.com
$1,853.35
TVS4EBA12A SCHNEIDER ELECTRIC - Panel Accessories & Surge Arrestor/Suppressor Supplies
Radwell.com
$1,853.35
TVS4EBA12A SCHNEIDER ELECTRIC - Panel Accessories & Surge Arrestor/Suppressor Supplies
Radwell.com