Description
The Littelfuse 350200 delivers reliable, always-on protection for motors and industrial equipment operating on 190–240VAC three-phase power systems. Built around a precision microcontroller, this relay continuously monitors all three phases simultaneously — detecting dangerous conditions such as phase loss, phase reversal, voltage imbalance, undervoltage, and overvoltage before they can cause equipment damage or unplanned downtime.
When a fault is detected, the heavy-duty SPDT (Form C) relay output trips immediately, isolating connected equipment and safeguarding your investment. Onboard LED diagnostic indicators provide instant visual feedback on system status and active fault conditions, streamlining troubleshooting and reducing maintenance time in the field.
The fixed-voltage design of the 350 Series simplifies installation and setup, making it an ideal fit for a wide range of industrial applications including pumps, air compressors, HVAC systems, conveyor drives, and motor control panels.
Key Features
- 3-phase voltage monitoring relay with continuous fault detection
- Operating voltage range: 190–240VAC
- Detects phase loss, phase reversal, voltage imbalance, overvoltage, and undervoltage
- Heavy-duty SPDT (Form C) relay output for reliable industrial switching
- High switching capacity suitable for demanding control circuit applications
- Microcontroller-based sensing for precise, repeatable protection performance
- LED diagnostic indicators for fast, at-a-glance status and fault identification
- Fixed-voltage design for straightforward installation and application setup
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