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Xantrex C40 Charge Controller
SKU: CHC-XC40-00
out of stock
4.5 lbs
  • Energy Type: Wind, Solar, Hydro
  • UL listed and CE certified
  • Compatible with 12, 24, 48 volt battery banks (Charging/dumping voltage setting are user settable)
  • Works with wind turbines, solar panels and hydro generators
  • 100% solid state controller (no mechanical relays or solenoids)
  • Pulse width modulated (PWM) controlled
  • 2 year warranty

A Controller for Virtually any DC Charging Source

The C40 (40 amp controller) has long been the main stay of Xantrex’s charge controllers because of it versatility and reliability. The C40 is a 100% solid state, microprocessor-driven controller which is UL and cUL listed. The C40 controller may be configured for solar panel battery charging, or DC load control (e.g. low voltage disconnect) or DC diversion operation (e.g. wind turbines and hydro generators). Whatever the charging source, the C40 Xantrex Charge Controller is sure to meet your DC controller needs.

Silent Microprocessor Control
The C40 has a powerful microprocessor at its core which increases system performance and maximizes battery life. It is fully solid state and operates silently. It is capable of handling 40 amps at continuous duty and can handle current surges of up to 85 amps.

PWM Charge Performance
The C40 uses Pulse Width Modulation (PWM) charging profiles which are designed to provide a full charge to your battery while, at the same time, minimize gassing which can shorten battery life.

3-Stage Battery Charging
The C40 automatically initiates a 3-stage battery charging cycle. Bulk, Absorption, and Float modes are used to ensure that voltage and current settings accurately match the batteries' actual state of charge. This means fast-as-possible charging and extended battery life. An auto equalize mode can be easily switched off when the controller is used with sealed batteries. (Charge controllers with mechanical relays or solenoids cannot do this).

Field Adjustable
The C40 can be configured for 12, 24 or 48 volt systems. Bulk and Float voltage set points are user adjustable which allows use with a wide variety of battery technologies including; flooded lead acid, gel, and absorbed glass mat. In addition, there are manually selectable settings for Nicad batteries.

DC Load Controller Mode
When used as a load controller, the C Series (C40) will automatically turn a DC load on or off at predetermined battery voltage settings. Both LVD (low voltage disconnect) and LVR (low voltage reconnect) set points are user adjustable.

DC Diversion Mode
In this mode, all power, which is not used to maintain a full charge on the batteries, is diverted to a load dump such as water or space heaters. Diversion mode is used to regulate microhydro and wind turbine systems which need a constant load. (Note, Windy Nation sells 300 Watt dump loads which are compatible with the Xantrex C40 Charge Controller.)

LED Status Indicator
A simple to read, multi-color LED indicates operating status .

UL and cUL Listed
The C40 charge controller is listed by UL to exacting UL 1741 and cUL CSA 22.2 107.1-95 standards. The C40 is also CE compliant (European countries) and is designed to CTIK standards (Australia). The current ratings are "real world" and do not have to be derated to comply with USA NEC 125% overcurrent requirements.

LCD Digital Display (Optional feature: not included with this purchase)
A back-lit meter which continuously displays: battery voltage, DC amperage, cumulative amp hours and amp hours since last reset. CM mounts on front of C Series, C35, C40 and C60, charge controllers. The remote meters CMR/50 and CMR/100 use simple telephone type plug-in connectors. 50 ft. (15 m) or 100 ft. (30 m) cable included. If used with a wind turbine, this will only measure voltage.

Temperature Compensation (Optional feature: not included with this purchase)
BTS/15 or BTS/35 Monitors battery temperature and adjusts charging voltage for maximum performance. A 15 ft. (4.5 m) or 35 ft. (11 m) cable with standard telephone type connectors is included.

Two year warranty on parts and labor.

Download the Xantrex C Series Owner's Manual for more information on wiring and technical specifications.