
Verify voltage presence at a glance with closed-door verification. The self-powered device comes with an easy to install 30 mm knockout profile with 8 ft wiring harness and a user label.
The Nukleus Voltage Presence Indicator (VPI) provides real-time visual verification of voltage presence using high-intensity redundant LEDs. Designed for industrial control panels and power distribution boards, it supports task-qualified personnel during mechanical lockout–tagout (LOTO) procedures in line with established electrical safety practices.
VPI supports mechanical LOTO, detects phase imbalance, alerts to backfeed voltage in neutral or ground lines, and is self-powered for continuous monitoring in rugged industrial environments.

The device is self-powered and provides continuous visual awareness of energized circuits using high-intensity LEDs, allowing personnel to identify live conditions without direct contact with conductors.
Detects phase imbalance early to avoid equipment shutdowns and maximize uptime.
Supports closed-door verification and is designed for rugged industrial environments and retrofit installation in existing panels and switchgear.
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