The Xantrex C-Series Solar Charge Controller — 40 Amps is a compact, field-ready PWM controller designed for off-grid power systems. It combines PV charging, energy diversion, and load management to protect your battery bank while maximizing solar harvest and overall system reliability.
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40 A PWM charge controller: PWM multi-stage, temperature-compensated charging to improve battery life and overall efficiency.
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Field-configurable voltage: Supports 12 V, 24 V, or 48 V operation (C40).
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PV charge, diversion, and load control: Flexible modes for charging, diverting excess energy, or powering loads.
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Remote display option: Optional display tracks cumulative amp-hours to monitor production and usage.
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Protection and durability: Electronic protection against short-circuit, overload, and over-temperature; conformal-coated boards and powder-coated enclosure.
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Field-adjustable setpoints: Adjust voltage and battery set points for precise charging control.
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Night-disconnect: Automatically disconnects from the battery at night to prevent parasitic draw.
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Ground compatibility: Works with negative ground and ungrounded systems for versatile installations.
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Certifications: UL and cUL listed (C60) with a robust, solid-state microprocessor-driven design across the C-Series.
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Designed for RVs, boats, cabins, and remote installations: Silent operation and reliable charging in mobile and remote environments.
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Warranty: Two-year warranty for dependable performance.
The Xantrex C-Series 40 A Solar Charge Controller helps protect and optimize your battery bank while maximizing solar harvest. Its PWM charging adapts to temperature to reduce sulfation and extend battery life. The field-configurable voltages and multiple controller modes support a wide range of off-grid setups—from RVs and boats to cabins and remote installations. If you add the optional remote display, you can monitor energy production with cumulative amp-hours. The rugged construction with conformal coating and powder coating is built to withstand harsh environments. Plus, the night-disconnect feature minimizes parasitic draw when solar input drops. Note: Prop 65 warning applies; this product may expose you to DINP and DIDP; for more information visit P65Warnings.ca.gov.