Guardian
A revolution in electrical safety. Real-time site-wide monitoring with patented O-PEN® technology, detecting and isolating faults before they become catastrophic.
Continuous protection for your entire site
Guardian is matt-e's flagship electrical safety device, incorporating patented O-PEN® technology to continuously monitor building electricity supplies and infrastructure.
Installed next to your existing distribution boards, it detects dangerous fault conditions that standard MCBs and RCDs simply cannot, then automatically isolates affected circuits or alerts building owners in real time.
With a cloud-based monitoring portal, building owners can remotely manage connected loads and receive alerts via SMS and email, from anywhere in the world.
Available Variants
Loss of Neutral
Detects and isolates dangerous neutral conductor loss conditions.
Broken PEN
Catches broken PEN conductor faults on TN-C-S supplies instantly.
Voltage Monitoring
Monitors for high and low line voltages outside safe thresholds.
Frequency Anomalies
Detects abnormal supply frequency deviation from nominal values.
Cloud Portal
Remote monitoring and management via secure cloud-based dashboard.
SMS & Email Alerts
Instant notifications to key personnel when a fault is detected.
Why Traditional Protection Fails
Poor electrical connections are a hidden danger. Standard protective devices offer no defence against them.
Without Guardian
- Overheating of installations and appliances
- Premature equipment failure and damage
- Fire hazards from undetected faults
- Electrocution risk from live metalwork
- MCBs and RCDs offer NO protection
With Guardian
- Continuous real-time monitoring of all supplies
- Instant fault detection and circuit isolation
- Remote alerts via SMS and email
- Cloud portal for remote load management
- Full protection beyond standard devices
Documentation & Support
User Instructions
Step-by-step installation and operation guide.
Request Document →Specification Sheet
Technical specifications and dimensions.
Request Document →Installation Manual
Detailed wiring diagrams and installation notes.
Request Document →Need technical guidance on the right Guardian variant for your site?