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  3. C12 PWM Charge Controller

PV charge, diversion and load controller

The C12 charge, lighting, or load controller is uniquely sophisticated. As a charge controller, it features three-stage charging, user definable voltage parameters, and automatic equalization. Standard in the C12’s load control circuitry are field adjustable low voltage disconnect and reconnect points, along with a five-minute low battery disconnect signal. The C12 also functions as a lighting controller. Lighting run time is adjustable from two to eight hours or can be set from dusk to dawn operation. It is used worldwide in a variety of applications, including remote village lighting systems and automatic outdoor lighting. An optional battery temperature sensor manages battery charging based on battery temperature.


  • CE marked for the Low Voltage Directive and EMC Directive


  • Recreational Vehicles
  • Heavy Duty Trucks
  • Coaches/Buses
  • Marine
  • Work Trucks
  • Specialty Vehicles

Available in:

    1000A OR 2000A

Electronic detection of short-circuit, overload, over-temperature and reverse polarity conditions

Tolerance to hostile environments

With conformal-coated boards and powder-coated enclosure.


  • Three-stage regulation, solid state, and pulse width modulation

  • Field adjustable control setpoints

  • Automatic equalization

  • Multi colour LED indicates operating and battery voltage status


C12 PWM Solar Charge Controller

Electrical Specifications

Rated PV current
12 A at 12 V only
Max. DC load
12 A with auto reset
Min. operating voltage
6 V
Max. PV open circuit array voltage
25 V
Max. voltage drop (PV to battery)
0.3 V
Max. voltage drop (battery to DC load)
0.5 V
Regulation setting
13 to 15 V
Equalize setting
Bulk plus 1 volt for two hours
Max. stranded wire size
#10 AWG stranded (5.2 mm2)
Typical consumption while charging
0.007 A
Typical consumption with load disconnected
0.003 A

General Specifications

Power consumption, night time
0.003 A
Enclosure material
Powder coated steel with strain relief for wiring and knockouts for up to 3.5 in conduits
Product weight
0.9 kg (2.0 lb)
Shipping weight
1.1 kg (2.5 lb)
Product dimensions (H x W x D)
16.5 x 11.0 x 4.0 cm (6.5 x 4.3 x 1.6 in)
Shipping dimensions (H x W x D)
20.3 x 11.7 x 4.0 cm (8.0 x 4.6 x 1.6 in)
Device mounting
Vertical wall mount – indoor only
Ambient air temperature for operation
0°C to 40°C (32°F to 104°F)
Two-year standard

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