Phocos PSW-H-6.5KW-120/48V 6.5kW Hybrid Inverter/Charger

The Phocos PSW-H-6.5KW-120/48V is a 6,500VA pure sine wave hybrid solar inverter charger built for 48VDC systems that need high-capacity output, dual integrated MPPT solar charging, and the flexibility to operate off-grid, on-grid, or without a battery bank entirely. UL1741 and CSA certified for the North American market, it brings together inverter, charge controller, and AC battery charger in a single wall-mounted unit with 120VAC output and 13,000VA surge capacity.

Key specifications

• Continuous output power: 6,500VA / 6,500W
• Surge power: 13,000VA (2× rated power, 5-second)
• AC output voltage / frequency: 110–127VAC ±5% (adjustable); 50/60Hz auto-recognition
• DC system voltage: 48VDC
• Dual integrated MPPT charge controllers: 250Vdc max PV input per MPPT; MPP voltage range 90–230Vdc × 2; 22Adc max usable PV current per MPPT; 4,000W max usable PV power per MPPT (8,000W combined); 5,000Wp max array per MPPT
• Max total charge current (PV AC): 120Adc
• Max AC input current: 60Aac
• Compatible battery types: Flooded lead acid, gel, AGM, lithium
• Inverter efficiency (from battery): >92% peak; from PV: >96% peak
• UPS transfer time: 10ms typical (UPS mode); 20ms typical (APL mode)
• Idle self-consumption: <75W
• Connectivity: BLE, USB-OTG, CANbus, RS-485, RS-232, generator start relay; detachable LCD display with 6 LEDs; 60-day onboard datalogger
• Enclosure / protection: IP21; washable dust filter
• Operating temperature: 14°F to 122°F (−10°C to 50°C); max altitude 13,123 ft. (4,000 m)
• Certifications: UL1741, CSA C22.2 No. 107.1-16, FCC Class A, RoHS compliant
• Dimensions: 23 W × 17 H × 5.8 D in. (584 × 433 × 148 mm); 40 lbs. (18.2 kg)
• Warranty: 3 years

Dual MPPT: two independent solar inputs

Where most inverter chargers at this wattage include a single MPPT input, the PSW-H-6.5KW-120/48V integrates two independent MPPT controllers, each rated to 250Vdc and 22Adc. This allows two separate PV strings—potentially on different roof orientations, tilt angles, or shading conditions—to be tracked and harvested independently without one string dragging down the other. Each MPPT supports up to 5,000Wp of array capacity for a combined 10,000Wp maximum, and the high input voltage means modules can be strung in series to reach the MPPT window without combiner boxes, string fuses, or blocking diodes, reducing balance-of-system cost and wiring complexity.

Any-Grid operation: off-grid, on-grid, or battery-free

The PSW-H-6.5KW-120/48V adapts to whatever energy sources are present. In off-grid mode it operates as a standalone inverter drawing from solar and battery with programmable generator start. In grid-connected installations it prioritizes solar and battery to reduce grid draw, switching to grid power only when needed, with a 10ms UPS transfer that keeps sensitive loads online when grid power fails. The battery-free mode allows the unit to pass solar power directly to loads on a stable grid without requiring any battery investment—an effective way to reduce electricity costs on a limited budget, with the option to add storage later. Charging priorities across solar, grid, and generator inputs are fully user-configurable.

Application scenarios

• Off-grid homestead or small commercial: High-output 48V system with dual-string solar harvesting, generator backup, and multi-chemistry battery support for full energy independence.
• Grid-tied backup with critical loads: 10ms UPS transfer protects sensitive equipment—communications, refrigeration, medical devices—during grid outages without a separate transfer switch.
• Mixed-orientation rooftop arrays: Dual independent MPPTs allow east/west or split-shade strings to be managed separately, maximizing daily yield across the full solar window.
• Battery-free grid reduction: Solar passes directly to loads without a battery bank, cutting grid consumption with minimal upfront investment on stable-grid sites.
• Scalable multi-unit systems: Up to nine units connect in parallel, split-phase, or 3-phase configurations for up to 58.5kW of synchronized output from this model.

Connectivity and monitoring

The unit ships with a detachable LCD display and communication module with six status LEDs, and supports BLE, USB-OTG, CANbus, RS-485, and RS-232 alongside a dry-contact generator start relay. An onboard datalogger retains 60 days of performance history. Integration with Phocos Any-Bridge AB-PLC and PhocosLink Cloud enables remote monitoring and system control from any internet-connected device. Galvanic isolation of the battery circuit supports both positive and negative grounding configurations, accommodating a wider range of existing system designs.

System compatibility

The PSW-H-6.5KW-120/48V operates on a 48VDC battery bank and supports flooded, gel, AGM, and lithium battery chemistries with adjustable charge voltage set points for float, boost, equalization, and deep-discharge protection stages. It accepts one AC input at a time—grid or generator—at up to 60Aac. Battery wiring supports up to AWG 2/0 (70 mm²) and PV wiring up to AWG 4 (16 mm²). The washable internal filter reduces maintenance in dusty environments. The unit is compatible with the Phocos Any-Cell energy storage solution and the broader Any-Grid multi-unit stacking architecture.

Why choose the Phocos PSW-H-6.5KW-120/48V?

The Phocos PSW-H-6.5KW-120/48V stands out in the 48V hybrid solar inverter charger category by combining dual independent MPPT inputs, a 13,000VA surge rating, and battery-free operating capability in a single UL1741 and CSA-certified enclosure. For installers working with dual-orientation arrays, high-output 48V systems, or sites where battery investment needs to be deferred, it offers a level of design flexibility that single-MPPT alternatives at this wattage cannot match—backed by Phocos' Any-Grid platform and PhocosLink Cloud remote monitoring.