25 Amp Solar Regulator or Charge Controller
GP PWM-25 Amp Digital Regulator
• For solar system control and protection
• Innovative, compact design
• Can Be Used with GP Solar Kits
Provides Superior Battery Protection!
A Charge Regulator is an essential component of your photovoltaic (PV) system. The Regulator maintains the life of the battery by protecting it from overcharging. When your battery has reached a 100% state of charge, the Regulator prevents overcharging by limiting the current flowing into the batteries from your solar array. The GP-PWM-25 is an automatic selecting 12 or 24 volt flush mounted
photovoltaic (PV) charge controller rated for a continuous solar current input of 25 amps. The GP-PWM-25 uses pulse width modulation technology and a unique four stage charging system and optional equalize setting to charge and protect your battery bank. The GP-PWM-25 features an LCD digital display that shows solar array charge current, system battery voltage and battery capacity. The GP-PWM-25 display has a power saving feature that shuts the display off after 30 minutes of no user activity
Nominal System Voltage 12/24V, automatic selection
Max. Solar Array Current 25 Amps
Battery Voltage Range 6V – 31V
Max. Solar Voltage 56V
Operating Consumption 6mA
Display Consumption 10mA
Absorption Voltage 14.1/14.4V 28.2/28.8V
(25°C / 77°F), 0.5-2h / Day
Float Voltage 13.7/27.4V (25°C / 77°F)
Equalization Voltage 14.8/29.6V (25°C / 77°F),
2h / 28 Day or V < 12.1/24.2
Temperature Compensation -4mV/cell*K
Operating Temperature -40 to 85°C / -40 to 185°F
Display Operating Temperature -20 to 55°C / -4 to 131°F
Humidity 99% N.C.
Dimensions (H x W x D): 107 x 190 x 35 mm
4.25 x 7.5 x 1.38 in
Weight: 278 grams
10 oz
Maximum Wire Gauge: #6 AWG
Warranty: 5 years
Protection Battery Reverse Polarity,
Solar Array Reverse Polarity (12V
input only), Over Temperature, PV
Short Circuit, Over Current
The total rated Maximum Power Current (Imp) of the PV input should
not exceed 25 Amps.
The GP-PWM-25 will limit PV current above 25 Amps.
Although the GP-PWM-25 will accept PV current greater than 25 Amps
for a short duration, damage may occur if the GP-PWM-25 operates
continuously with greater than 25 Amps of PV input.