CUSTODIAN: visibility for invisible voltages

How do you detect a danger you can’t see
but that could cost a life?

In electrical environments, voltage is a silent danger—unseen to the eye but potentially fatal. While permanent optical detectors exist to visually warn of its presence, not all offer the same level of reliability, visibility, and accuracy.

At Sofamel, our commitment to electrical safety has led us to develop CUSTODIAN, a permanent optical detector that not only alerts but also acts as a constant guardian in substations and indoor electrical installations.

CUSTODIAN
Optical voltage detector - Permanent

Safety, reliability, and easy installation

CUSTODIAN combines safety, reliability, and easy installation, positioning itself as a benchmark solution in permanent voltage optical detection. Designed to protect technicians, installers, and maintenance personnel, it makes invisible dangers visible and helps prevent serious or even fatal accidents from unexpected contact.

Key features:

• For voltages from 5 to 138 kV
• Easy installation on bars or cables (22–53 mm)
• User-replaceable contact electrode
• Compatible with Phase-to-Earth (2.9 – 79.6 kV) and Phase-to-Phase (5 – 138 kV) voltages
• Flexible orientation: 30° in any direction
• IP65 protection, ideal for demanding environments
• Connection: M8 female interface

For more technical information: VIEW PRODUCT >

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How do you detect a danger you can’t see but that could cost a life?

CUSTODIAN Optical voltage detector - Permanent

Safety, reliability, and easy installation

For more technical information: VIEW PRODUCT >

How do you detect a danger you can’t see
but that could cost a life?

CUSTODIAN
Optical voltage detector - Permanent