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Phocos CX40 Solar Charge Controller (12/24V)

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Net Price: 127,35 €
incl 23%VAT: 156,64 €
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Phocos CX40


Phocos CX40 Solar Charge Controller for 12/24V solar systems

PV solar charge controller


The Phocos CX series is a sophisticated solar charge controller family with exceptional features in this price range. Beside a perfect PWM regulation with integrated temperature compensation the controllers provide extraordinary display, programming and safety functions. 
The battery state of charge is clearly displayed with a bar chart, as well as energy flows from and to the battery and the load status (e.g. overload, load short circuit). The deep discharge protection function can be set up to three different modes: voltage controlled, SOC controlled or adaptive.

Acoustic warnings are built in, also a programmable nightlight function. As an accessory we can provide an Excess Energy Management output to control special Phocos appliances like the SF solar refrigerators/coolers. The compact case design is prepared for DIN rail mounting (mounting device available as an accessory).


  • Charge and discharge status display
  • Acoustic load disconnect pre-warning
  • Load status indication
  • Choose between 5 load disconnect algorithms
  • Boost/absorption/float PWM-regulation (series type)
  • Integrated temperature compensation
  • Covered terminals (up to 16 mm2 wire size)
  • Full solid-state protection


Example of standard PV diagram with

Phocos CX Series (or other PWM charge controller) optionally with

Phocos 230V-AV pure sine wave solar inverter

Standard PV solar diagram PV solar off-grid diagram based on pure sine wave inverter (230V/50Hz or 110V/60Hz)
Example: standard PV solar diagram with Phocos PWM charge controller Example: standard PV solar diagram with Phocos PWM charge controller and an 230V-AV pure sine wave solar inverter

Main Components

Main Components


Check the newest datasheets and certificates directly in the Phocos database

 Phocos CX series - Datasheet
 Phocos CX series - User Manual
 Phocos CX series - CE Certificate
 Phocos CX series - Measurement sensitivity (data-logger)

CXCOM software


CXCOM configuration software for CX-controllers, quick and easy view and configuration of individual load-time, system components and data-logger.

 CXCOM ver_V5.0_2011-09-02_0 software:
download (4.7MB)
 CXCOM manual PDF download (1.2MB)
 CXCOM installations guide VISTA PDF download (0.5MB)
 CXCOM installations guide WIN98/2000/XP PDF download (0.5MB)


Technical Data

Product Phocos CX 10A | 20A | 40A
Type Charge Controller 12/24V
System Photovoltaic Systems
Function Overcharge Protection
Batteries GEL, AGM, Lead-Acid, Flooded
Charging Mode PWM
Nominal Voltage 12/24V automatic detection
Max. charge/load current 10A |15A | 20A
Float charge 13.7/27.4V (25°C)
Main charge 14.4/28.8V (25°C) 30min (daily)
Boost charge 14.4/28.8V (25°C) 2h activation: battery voltage <12.3/24.6V
Equalization 14.8/29.6V (25°C) 2h activation: battery voltage <12.1/24.2V
Max. panel voltage 30/50V (Voc) for 12/24V Systems
Deep discharge protection State of charge dependent A:11.4–11.9V/22.8–23.8V | B:11.0–11.75V/22.0–23.5V | Voltage dependent A: 11.0/22V B: 11.5/23V | Adaptive 11.0–12.2V / 22.0–24.4V | Reconnect level 12.8/25.6V
Overvoltage protection 15.5/31.0V
Undervoltage protection 10.5/21.0V
Temperature compensation -25 mV/K at 12V | -50 mV/K at 24V
Self consumption < 4mA
Grounding positive grounding possible
Ambient temperature −20 to +50°C
Max. height 4.000m above sea level
Wire cross section < 16 mm2
Weight 168g | 179g
Dimensions (WxHxD) 92x93x38 mm
Protection class IP22
Warranty 2 years

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