30A PWM charge controller 12V 24V 36V 48V with display
PWM 30 A solar charge controller VS3048AU: 12/24/36/48 V Auto, maximum PV open-circuit voltage 96 V.
For off-grid solar systems; always verify panel and battery compatibility.
Need a controller for battery charging in an off-grid solar system? The VS3048AU handles up to 30 A on 12/24/36/48 V Auto systems and clearly defines the PV-array and battery limits to check.
Choose the controller from module open-circuit voltage, charging current and the battery profile. Cabling and protection devices must be sized by a competent installer.
Why is a solar charge controller required?
Installed between panels and batteries, the controller manages charging and keeps operation within its ratings. PWM requires modules matched to battery voltage; MPPT operates around the array maximum-power point within its range.
Technical specifications VS3048AU
| Model | VS3048AU |
| Technology | PWM |
| Rated current | 30 A |
| Battery voltage | 12/24/36/48 V Auto |
| Maximum PV open-circuit voltage | 96 V |
| Indicative PV power | Size within 30 A and the allowed PV voltage |
| Batteries | Sealed, Gel, Flooded |
| Enclosure | IP30 |
| Feature | LCD display and 5 V / 2.4 A USB output |
| Dimensions | 181 x 100,9 x 59,8 mm |
| Weight | 0,58 kg |
How should panels and batteries be selected?
Add the open-circuit voltage of series-connected modules, including the cold-weather increase, and remain below the controller limit. Also verify current, allowed power and battery charge profile.
Frequently asked questions
Is this controller PWM or MPPT?
The VS3048AU uses PWM technology. PWM and MPPT are not interchangeable: the PV array is matched to the battery differently.
Can any solar panel be connected?
No. Module open-circuit voltage, current and configuration must remain within the ratings; include the cold-weather Voc increase.
Which batteries are compatible?
The declared profiles are: Sealed, Gel, Flooded. Check charging voltages and the battery manufacturer's instructions before connection.
Does it provide a load output?
Output and control functions depend on the model. For VS3048AU: LCD display and 5 V / 2.4 A USB output. Check load current and the wiring diagram.
What is the correct connection sequence?
Normally connect the battery first, then the PV array and finally any loads, always following the manual, polarity, fuse and cable requirements.
