High Voltage Signs

Protect workers from deadly electrical hazards with our comprehensive selection of high voltage signs and electrical danger signs. Required by OSHA 29 CFR 1910.303 for electrical equipment and panels, high voltage signs warn unqualified personnel of the life-threatening risks of contact with energized electrical systems. Our high voltage signs feature the ANSI Z535 DANGER signal word in bold red, the standard lightning bolt electrical hazard symbol, and clear warning text. Available in .040 aluminum for permanent panel and wall mounting, rigid plastic for enclosed electrical rooms, and self-adhesive vinyl labels for transformers, switchgear, and control panels. Voltage-specific signs (480V, 4160V, 15kV, etc.) and arc flash combination labels are also available.

Show All Electrical Safety Signs

High Voltage Signs

Danger High Voltage Sign

Danger High Voltage Sign

Item E3301

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Authorized Only Sign

Danger High Voltage Authorized Only Sign

Item E3302

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Keep Out Sign

Danger High Voltage Keep Out Sign

Item E3281

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Sign

Danger High Voltage Sign

Item E3276

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Sign

Danger High Voltage Sign

Item E3300

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Keep Away Sign

Danger High Voltage Keep Away Sign

Item E3299

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Overhead Sign

Danger High Voltage Overhead Sign

Item E3268

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Keep Out Sign

Danger High Voltage Keep Out Sign

Item E3303

InfiniStick

Customizable

Starting at

$8.32
High Voltage Cable Underground Sign

High Voltage Cable Underground Sign

Item E3306

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Equipment Sign

Danger High Voltage Equipment Sign

Item E3287

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Within Keep Out Sign

Danger High Voltage Within Keep Out Sign

Item E3278

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Sign

Danger High Voltage Sign

Item A0059

InfiniStick

Starting at

$8.85
Danger High Voltage Keep Away Sign

Danger High Voltage Keep Away Sign

Item E3335

InfiniStick

Customizable

Starting at

$8.24
Danger High Voltage Above Sign

Danger High Voltage Above Sign

Item E3313

InfiniStick

Customizable

Starting at

$8.32
High Voltage Do Not Enter Enclosure Sign

High Voltage Do Not Enter Enclosure Sign

Item E3305

InfiniStick

Customizable

Starting at

$8.32
Danger Hazardous Voltage Inside Sign

Danger Hazardous Voltage Inside Sign

Item E3283

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Keep Out Sign

Danger High Voltage Keep Out Sign

Item E3355EN

InfiniStick

Customizable

Starting at

$8.24
Danger Sf6 Gas Filled Sign

Danger Sf6 Gas Filled Sign

Item A0064

InfiniStick

Starting at

$8.85
Hazardous Voltage Keep Away Sign

Hazardous Voltage Keep Away Sign

Item E3427

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Sign

Danger High Voltage Sign

Item E3368

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Keep Out Sign

Danger High Voltage Keep Out Sign

Item E3439

InfiniStick

Customizable

Starting at

$8.32
Danger Authorized Personnel Only Sign

Danger Authorized Personnel Only Sign

Item E3435

InfiniStick

Customizable

Starting at

$8.32
High Voltage Keep Away Sign

High Voltage Keep Away Sign

Item E3426

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Keep Out Sign

Danger High Voltage Keep Out Sign

Item E3437

InfiniStick

Customizable

Starting at

$8.32
High Voltage Turn Off Power Sign

High Voltage Turn Off Power Sign

Item E2255

InfiniStick

Customizable

Starting at

$8.24
Follow Lockout Procedures Sign

Follow Lockout Procedures Sign

Item E3446

InfiniStick

Customizable

Starting at

$8.32
Hazardous Voltage Keep Out Sign

Hazardous Voltage Keep Out Sign

Item E3448

InfiniStick

Customizable

Starting at

$8.32
Warning High Voltage Sign

Warning High Voltage Sign

Item E3443

InfiniStick

Customizable

Starting at

$8.32
High Voltage Keep Out Sign

High Voltage Keep Out Sign

Item E3438

InfiniStick

Customizable

Starting at

$8.32
Shock Hazard High Voltage Inside Sign

Shock Hazard High Voltage Inside Sign

Item E3371

InfiniStick

Customizable

Starting at

$8.32
Entry By Authorized Personnel Only Sign

Entry By Authorized Personnel Only Sign

Item E3388

InfiniStick

Customizable

Starting at

$8.24
Danger High Voltage Keep Out Sign

Danger High Voltage Keep Out Sign

Item E3410

InfiniStick

Customizable

Starting at

$8.32
Do Not Enter This Enclosure Sign

Do Not Enter This Enclosure Sign

Item E3413

InfiniStick

Customizable

Starting at

$8.32
High Voltage Inside Do Not Enter Sign

High Voltage Inside Do Not Enter Sign

Item E3431

InfiniStick

Customizable

Starting at

$8.32
High Voltage Inside Do Not Open Sign

High Voltage Inside Do Not Open Sign

Item E3433

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Keep Out Sign

Danger High Voltage Keep Out Sign

Item E3440

InfiniStick

Customizable

Starting at

$8.24
Danger Keep Off Do Not Climb Sign

Danger Keep Off Do Not Climb Sign

Item E3418

InfiniStick

Starting at

$8.24
Danger High Voltage Equipment Sign

Danger High Voltage Equipment Sign

Item E3374

InfiniStick

Customizable

Starting at

$8.32
Hazardous Voltage Above Keep Off Sign

Hazardous Voltage Above Keep Off Sign

Item E3412

InfiniStick

Customizable

Starting at

$8.32
Danger Stay Clear Secure Power Sign

Danger Stay Clear Secure Power Sign

Item E3370

InfiniStick

Customizable

Starting at

$8.32
High Voltage Turn Off Power Sign

High Voltage Turn Off Power Sign

Item E3414

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Sign

Danger High Voltage Sign

Item E3386

InfiniStick

Customizable

Starting at

$8.24
Warning High Voltage Cables Overhead Sign

Warning High Voltage Cables Overhead Sign

Item A0066

InfiniStick

Starting at

$8.85
Warning Risk Of Electric Shock Sign

Warning Risk Of Electric Shock Sign

Item A0072

InfiniStick

Starting at

$8.85
Hazardous Voltage Overhead Sign

Hazardous Voltage Overhead Sign

Item E3429

InfiniStick

Customizable

Starting at

$8.32
Hazardous Voltage Above Keep Out Sign

Hazardous Voltage Above Keep Out Sign

Item E3415

InfiniStick

Customizable

Starting at

$8.32
High Voltage Electrical Room Sign

High Voltage Electrical Room Sign

Item E3445

InfiniStick

Customizable

Starting at

$8.32
Follow Lockout Procedures Sign

Follow Lockout Procedures Sign

Item E3447

InfiniStick

Customizable

Starting at

$8.32
Warning Authorized Personnel Only Sign

Warning Authorized Personnel Only Sign

Item E3436

InfiniStick

Customizable

Starting at

$8.32
High Voltage Inside Do Not Open Sign

High Voltage Inside Do Not Open Sign

Item E3434

InfiniStick

Customizable

Starting at

$8.32
Warning High Voltage Sign

Warning High Voltage Sign

Item E3444

InfiniStick

Customizable

Starting at

$8.24
High Voltage Keep Out Sign

High Voltage Keep Out Sign

Item E3441

InfiniStick

Customizable

Starting at

$8.32
Hazardous Voltage Keep Away Sign

Hazardous Voltage Keep Away Sign

Item E3428

InfiniStick

Customizable

Starting at

$8.32
High Voltage Keep Away Sign

High Voltage Keep Away Sign

Item E3425

InfiniStick

Customizable

Starting at

$8.32
Hazardous Voltage Keep Away Sign

Hazardous Voltage Keep Away Sign

Item E3372

InfiniStick

Customizable

Starting at

$8.32
Hazardous Voltage Overhead Sign

Hazardous Voltage Overhead Sign

Item E3430

InfiniStick

Customizable

Starting at

$8.32
High Voltage Keep Out Sign

High Voltage Keep Out Sign

Item E3442

InfiniStick

Customizable

Starting at

$8.24
High Voltage Inside Do Not Enter Sign

High Voltage Inside Do Not Enter Sign

Item E3432

InfiniStick

Customizable

Starting at

$8.32
High Voltage Inside Keep Out Sign

High Voltage Inside Keep Out Sign

Item E3422

InfiniStick

Customizable

Starting at

$8.32
High Voltage Inside Keep Out Sign

High Voltage Inside Keep Out Sign

Item E3423

InfiniStick

Customizable

Starting at

$8.32
Danger High Voltage Floor Sign

Danger High Voltage Floor Sign

Item E3450

Customizable

Starting at

$20.94
Danger High Voltage Floor Sign

Danger High Voltage Floor Sign

Item E3452

Starting at

$20.94
Danger High Voltage Floor Sign

Danger High Voltage Floor Sign

Item E3451

Starting at

$20.94
Danger High Voltage Floor Stand

Danger High Voltage Floor Stand

Double-Sided Floor Stand 12″ × 20″

Item E3449

Customizable

Starting at

$59.18
Danger 20kv Voltage Sign

Danger 20kv Voltage Sign

Item A0076

InfiniStick

Starting at

$8.85
Danger 20kv Switch Room Sign

Danger 20kv Switch Room Sign

Item A0077

InfiniStick

Starting at

$8.85
Danger 110/12kv High Voltage Sign

Danger 110/12kv High Voltage Sign

Item A0078

InfiniStick

Starting at

$8.85

Bilingual High Voltage Signs

Bilingual Danger High Voltage Keep Out Sign

Bilingual Danger High Voltage Keep Out Sign

Item E3281BI

Bilingual

InfiniStick

Customizable

Starting at

$8.24
Bilingual Danger High Voltage Sign

Bilingual Danger High Voltage Sign

Item E3276BI

Bilingual

InfiniStick

Customizable

Starting at

$8.24
Bilingual Danger High Voltage Sign

Bilingual Danger High Voltage Sign

Item E3347

Bilingual

InfiniStick

Customizable

Starting at

$8.24
Bilingual High Voltage Authorized Personnel Only Sign

Bilingual High Voltage Authorized Personnel Only Sign

Item E3348

Bilingual

InfiniStick

Customizable

Starting at

$8.24
Bilingual Danger High Voltage Sign

Bilingual Danger High Voltage Sign

Item E3300BI

Bilingual

InfiniStick

Customizable

Starting at

$8.24
Bilingual Danger High Voltage Keep Out Sign

Bilingual Danger High Voltage Keep Out Sign

Item E3439BI

Bilingual

InfiniStick

Customizable

Starting at

$8.32
Bilingual Danger High Voltage Keep Away Sign

Bilingual Danger High Voltage Keep Away Sign

Item E3426BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Danger High Voltage Sign

Bilingual Danger High Voltage Sign

Item E3368BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Danger High Voltage Authorized Personnel Only Sign

Bilingual Danger High Voltage Authorized Personnel Only Sign

Item E3435BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Danger High Voltage Keep Out Sign

Bilingual Danger High Voltage Keep Out Sign

Item E3437BI

Bilingual

InfiniStick

Customizable

Starting at

$8.32
Bilingual Danger High Voltage Overhead Sign

Bilingual Danger High Voltage Overhead Sign

Item E3268BI

Bilingual

InfiniStick

Customizable

Starting at

$8.24
Bilingual High Voltage Unauthorized Keep Out Sign

Bilingual High Voltage Unauthorized Keep Out Sign

Item E3303BI

Bilingual

InfiniStick

Customizable

Starting at

$8.24
Bilingual Danger High Voltage Within Keep Out Sign

Bilingual Danger High Voltage Within Keep Out Sign

Item E3278BI

Bilingual

InfiniStick

Customizable

Starting at

$8.24
Bilingual Danger High Voltage Above Sign

Bilingual Danger High Voltage Above Sign

Item E3313BI

Bilingual

InfiniStick

Customizable

Starting at

$8.24
Bilingual Danger Hazardous Voltage Overhead Sign

Bilingual Danger Hazardous Voltage Overhead Sign

Item E3429BI

Bilingual

InfiniStick

Customizable

Starting at

$8.32
Bilingual Danger Hazardous Voltage Keep Away Sign

Bilingual Danger Hazardous Voltage Keep Away Sign

Item E3427BI

Bilingual

InfiniStick

Customizable

Starting at

$8.32
Bilingual High Voltage Authorized Personnel Only Sign

Bilingual High Voltage Authorized Personnel Only Sign

Item E3388BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Danger High Voltage Inside Do Not Enter Sign

Bilingual Danger High Voltage Inside Do Not Enter Sign

Item E3431BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Danger Hazardous Voltage Keep Out Sign

Bilingual Danger Hazardous Voltage Keep Out Sign

Item E3448BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Danger High Voltage Sign

Bilingual Danger High Voltage Sign

Item E3410BI

Bilingual

InfiniStick

Customizable

Starting at

$8.24
Bilingual Danger Shock Hazard High Voltage Inside Sign

Bilingual Danger Shock Hazard High Voltage Inside Sign

Item E3371BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Danger Hazardous Voltage Above Keep Out Sign

Bilingual Danger Hazardous Voltage Above Keep Out Sign

Item E3415BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Hazardous Voltage Do Not Enter This Enclosure Sign

Bilingual Hazardous Voltage Do Not Enter This Enclosure Sign

Item E3413BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Danger High Voltage Keep Out Sign

Bilingual Danger High Voltage Keep Out Sign

Item E3355

Bilingual

InfiniStick

Starting at

$8.32
Bilingual High Voltage Authorized Personnel Only Sign

Bilingual High Voltage Authorized Personnel Only Sign

Item E3436BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Warning Hazardous Voltage Keep Away Sign

Bilingual Warning Hazardous Voltage Keep Away Sign

Item E3428BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Warning High Voltage Keep Out Sign

Bilingual Warning High Voltage Keep Out Sign

Item E3441BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Warning High Voltage Sign

Bilingual Warning High Voltage Sign

Item E3443BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Warning High Voltage Keep Out Sign

Bilingual Warning High Voltage Keep Out Sign

Item E3438BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Warning High Voltage Sign

Bilingual Warning High Voltage Sign

Item E3444BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Danger High Voltage Turn Off Power Sign

Bilingual Danger High Voltage Turn Off Power Sign

Item E3414BI

Bilingual

InfiniStick

Customizable

Starting at

$8.32
Bilingual Warning High Voltage Inside Do Not Open Sign

Bilingual Warning High Voltage Inside Do Not Open Sign

Item E3434BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Warning Hazardous Voltage Overhead Sign

Bilingual Warning Hazardous Voltage Overhead Sign

Item E3430BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Warning High Voltage Electrical Room Sign

Bilingual Warning High Voltage Electrical Room Sign

Item E3445BI

Bilingual

InfiniStick

Customizable

Starting at

$8.24
Bilingual Follow Lockout Tagout Procedures Sign

Bilingual Follow Lockout Tagout Procedures Sign

Item E3446BI

Bilingual

InfiniStick

Customizable

Starting at

$8.32
Bilingual Danger High Voltage Inside Do Not Open Sign

Bilingual Danger High Voltage Inside Do Not Open Sign

Item E3433BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Warning High Voltage Inside Do Not Enter Sign

Bilingual Warning High Voltage Inside Do Not Enter Sign

Item E3432BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Warning High Voltage Keep Away Sign

Bilingual Warning High Voltage Keep Away Sign

Item E3425BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Warning High Voltage Inside Keep Out Sign

Bilingual Warning High Voltage Inside Keep Out Sign

Item E3422BI

Bilingual

InfiniStick

Customizable

Starting at

$8.32
Bilingual Follow Lockout Tagout Procedures Sign

Bilingual Follow Lockout Tagout Procedures Sign

Item E3447BI

Bilingual

InfiniStick

Starting at

$8.32
Bilingual Warning High Voltage Inside Keep Out Sign

Bilingual Warning High Voltage Inside Keep Out Sign

Item E3423BI

Bilingual

InfiniStick

Starting at

$8.32

Custom High Voltage Signs

Custom ANSI Sign

Custom ANSI Sign

Signs and Labels

Item C5401

Customizable

Starting at

$9.37
Custom OSHA Sign

Custom OSHA Sign

Signs and Labels

Item C5320

Customizable

Starting at

$9.37
Bilingual OSHA Sign

Bilingual OSHA Sign

Signs and Labels

Item C5355

Bilingual

Customizable

Starting at

$9.37
Bilingual ANSI Z535

Bilingual ANSI Z535

Signs and Labels

Item C1153

Bilingual

Customizable

Starting at

$9.37

Other Categories You May Be Interested In

High Voltage Signs FAQs

What voltage requires a high voltage sign?

OSHA considers voltages above 600 volts as high voltage requiring specific warning signs. However, NFPA 70E recommends shock hazard warnings for all exposed energized parts above 50 volts.

Are high voltage signs required by OSHA?

Yes. OSHA 29 CFR 1910.303(g)(2) requires adequate warning signs on electrical equipment to warn qualified persons of electrical hazards. NFPA 70E provides additional requirements for arc flash hazard labeling.

What symbol is used on a high voltage sign?

High voltage signs use a lightning bolt inside a triangle (the international electrical hazard symbol) combined with the ANSI Z535 DANGER signal word and panel on a red background.

Can I get high voltage signs with specific voltage levels?

Yes. We offer signs specifying common voltages (120V, 240V, 480V, 4160V, etc.) as well as custom voltage-specific signs for any electrical system.

What is the best material for high voltage signs on electrical panels?

Self-adhesive vinyl labels are standard for panel labeling. For electrical rooms and switchgear enclosures, aluminum or rigid plastic mounted signs are preferred.

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