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Trim Resistors

Adjustable Resistor Assemblies allow easy calibration of the Thermal Plate’s heating element to your CT circuit with 8/32” studs and insulating shock mounts for quick installation into a control cabinet.

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Qualitrol 130 Thermal Plate

Simulates winding temperature by using a proportional current transformer output to power a heating element co...

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QUALITROL manufactures monitoring and protection devices for high value electrical assets and OEM manufacturing companies. Established in 1945, QUALITROL produces thousands of different types of products on demand, customized to meet unique requirements.

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Monitoring the World's Power Grid

Trim Resistors

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this product works well with

Qualitrol 130 Thermal Plate

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QUALITROL manufactures monitoring and protection devices for high value electrical assets and OEM manufacturing companies. Established in 1945, QUALITROL produces thousands of different types of products on demand, customized to meet unique requirements.