Description
The Littelfuse 35040026 is a precision-engineered 3-phase voltage monitoring relay built to deliver reliable motor and equipment protection in demanding 380–480VAC industrial environments. Part of Littelfuse’s trusted 350 Series, this relay continuously monitors all three phases in real time — detecting phase loss, phase reversal, voltage imbalance, and over/undervoltage conditions before they can cause equipment failure or unplanned downtime.
Powered by a microcontroller-based architecture, the 35040026 delivers high-accuracy monitoring with consistent, repeatable performance across a wide range of industrial applications. Built-in LED diagnostic indicators provide immediate visual feedback on fault conditions and system status, simplifying troubleshooting and reducing service time. The DPDT (dual Form C) relay output offers flexible integration into existing control circuits, making it a straightforward drop-in solution for new installations and retrofits alike.
This relay is well-suited for use in HVAC systems, pumps, compressors, conveyors, and general motor control panels where 480V 3-phase power is present and equipment protection is critical.
Key Features
- Continuously monitors 3-phase voltage across 380–480VAC systems
- Detects phase loss, phase reversal, voltage imbalance, and over/undervoltage faults
- Microcontroller-based design ensures high-accuracy, reliable monitoring
- DPDT (Form C) relay output for flexible control circuit integration
- LED diagnostic indicators for fast, clear fault identification and status feedback
- Heavy-duty construction rated for demanding industrial environments
- Ideal for HVAC systems, pumps, compressors, conveyors, and motor control applications
- Part of the Littelfuse 350 Series — a proven platform for industrial protection
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