---
title: Voltage Indicator Learn More Page
description: Voltage Test Station Learn More page
---

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### Illuminate your Lockout/Tagout Procedure with LED Voltage Indicators

Failure to perform proper mechanical or electrical Lockout/Tagout can lead to electrocution, electrical shock, arc-flash, and other hazards. In addition to huge penalties, these hazards often result in lost time wages, compensation claims, permanent disability, and fatalities.

One of the highest risk factors involved in these incidents is human error. Our voltage indicator Permanent Electrical Safety Devices (PESDs) provide a visual representation of energy presence to mitigate these risks. 

### About Voltage Indicators

Grace's Voltage Indicators are self-powered, UL listed, and permanently installed devices that visually represent presence of voltage with flashing or non-flashing, redundant LED lights. Typically hardwired to the load side of an electrical feeder or a disconnect switch, voltage indicators illuminate whenever hazardous voltage is present in any individual phase.

Voltage indicators greatly assist task qualified personnel with enhanced productivity and reduced risk while performing mechanical LOTO tasks by verifying energy presence.

### Features & Benefits

- Grace Voltage Indicators are Permanent Electrical Safety Devices (PESDs) that visually represent presence of voltage with flashing or non-flashing redundant LED lights.
- Typically hardwired to the load side of disconnect, Voltage Indicators illuminate whenever hazardous voltage is present in any individual phase.
- Safely and productively validates energy presence and enhances compliance to OSHA & NFPA 70E/CSAZ462, when installed and verified by a qualified electrician and incorporated into the facility’s electrical safety procedure.

### Applications & Configurations

- R-3W Series Voltage Indicators are suitable for both AC and DC applications from 40-600VAC and 30-1000VDC is a one-size-fits-all solution that detects 3-phase AC/DC voltage from 40-600VAC or 30-1000VDC
- Flex-Mount voltage indicator (R-3D2) is available in both 4-wire and 5-wire applications and is designed to mount onto disconnect switches.
- Flashing or non-flashing LEDs are available depending on your preference and application.
- The voltage indicators are suitable for AC/DC, while the R-3W-DC is specifically designed only for DC voltage applications.
- The fiber optic optic voltage indicator can be ordered with varying sizes of fiber optic cable length: 12", 24", 36", 48", & 72"

### Certifications

The following are the GracePESDs voltage indicator certifications broken out by their respective part numbers:

- R-3W/R-3W-SR: cUL Listed (#E56847) Type 4, 4X, 12, & 13
- R-3W2: cUL Listed (#E334957) Type 4X, 12, & 13, IP67, CE, Class 1 Div 2 Group A, B, C, & D
- R-3F2: cUL Listed (#E256847) Type 4, 4X, 12, & 13, IP67 
- R-3W-DC: cUL Listed (#256847) Type 4, 4X, 12, 13, IP67, Class 1 Div 2 Group A, B, C, & D
- R-3D2: cUL Listed (#E334957) Type 4X, 12, & 13, IP67, CE, CAT III/IV, Class 1 Div 2

Literature and Technical Support

[Voltage Indicator Datasheet](https://www.graceport.com/hubfs/SS-VI-DS-EN.pdf)

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