Phocos CXN40 Solar Charge Controller (12/24V)

Availability: require pre order (waiting time ~4-6 weeks)
Limitations: max 3 units per order
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Price: € 140.00 140.00
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Producer: Phocos
Product code: Phocos CXN40


Phocos CXN40

PV solar charge controller


The Phocos CXN series is a sophisticated solar charge regulator family with negative grounding. 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. The deep discharge protection function can be set up to five different modes: voltage controlled, SOC controlled or adaptive SOC controlled. Acoustic warnings are built in, also a programmable night- light function.

The compact case design is prepared for DIN rail mounting (mounting device available as an accessory). 


  • Built-in 1 Year Data Logger for System Analysis 
  • Choose between 5 load disconnect algorithms 
  • Temperature compensated 3 Stage (Boost/absorption/float) PWM Series Regulation 
  • Automatic 12/24 V detection 
  • Prepared for DIN rail mounting (CX-DR2.1) 
  • Optional external temperature sensor (CXNT) 
  • Optional remote display (CXM multi-meter) 
  • Optional USB interface (CXI + CXCOM).

Example of standard PV diagram with

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

Phocos 110/230V off-grid pure sine wave solar inverter

Standard PV solar diagram PV solar diagram with an 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


 Phocos CXN series - Datasheet
Phocos CXN series - User Manual
Phocos CXN series - CE Certificate

CXCOM software

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

 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 CXN 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 |20A | 40A
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 < 6mA
Grounding negative 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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