SolaX X3 Ultra 25kW Three Phase Hybrid Inverter

Description

The SolaX X3 Ultra is a three-phase commercial and industrial hybrid inverter in 25kW and 30kW ratings, supplied with a WiFi dongle. It combines solar, storage and backup in one unit with 3 MPP trackers (6 strings), up to 36A per MPPT for high-power panels and 200% PV oversizing.

It offers dual independent battery ports (60A charge and discharge in total), UPS-level switchover in under 10ms, 200% EPS overload for 10 seconds and 100% unbalanced output. Up to 10 units can run in parallel for on-grid and off-grid systems, and microgrid and generator functions add flexibility. It is IP66 rated with Type II SPD on AC and DC.

25 / 30kW

Hybrid Output

3 MPPT

6 Strings

36A

Per MPPT

<10ms

Backup Switchover

60A

Battery Charge/Discharge

IP66

Ingress Protection

Important Safety Information

Hybrid inverter and battery installations must be carried out by competent persons to BS 7671, with connection notified under G99. Backup (EPS) wiring changes the earthing and protection arrangements. Follow MCS guidance where applicable.

Compatibility

The Ultra works with SolaX high-voltage HS-series batteries, with a battery voltage range of 180 to 800V. A minimum of 3 HS-series battery modules is required, and if the total voltage of 3 modules is under 127V with no PV input, the system will not start up. Confirm your battery configuration before ordering.

Robust Backup

UPS-level switchover under 10ms, 200% EPS overload for 10s and EPS operation that supports a wide range of load types.

High-Power PV Input

36A per MPPT suits high-power panels, with 200% PV oversizing and 3 MPPTs with 6 strings.

Dual Battery Ports

Two independent battery ports for easy expansion, up to 60A total charge and discharge.

Scalable Systems

Up to 10 units in parallel for on-grid and off-grid, with microgrid and generator functions.

Smart Energy Management

Smart load management for heat pumps and EV chargers, built-in shadow tracking and VPP-ready communications.

Safe & Weatherproof

IP66, Type II SPD on AC and DC and optional AFCI.

Model

Rated Output

Max Output Apparent Power

Max DC Input Power

X3-ULT-25K

25kW

27.5kVA

50kW

X3-ULT-30K

30kW

30kVA

60kW

PV Input (both models)

Max. PV input voltage

1000V

Operating voltage range

120 to 950V

Start-up voltage

200V

MPP trackers / strings

3 / 6 (2 strings per MPPT)

Max. input current per MPPT

36A

PV oversizing

Up to 200%

Battery (both models)

Battery type

Lithium

Battery voltage range

180 to 800V

Battery ports

2 independent (dual)

Max. charge / discharge current

60A (30A x 2)

AC & EPS (both models)

AC voltage / frequency

230V / 400V, 50 / 60Hz

100% unbalanced output

Yes

EPS overload

200% of rated power for 10 seconds

Backup switchover time

Under 10ms

Parallel operation

Up to 10 units (on-grid and off-grid)

General (both models)

Ingress protection

IP66

Dimensions (W x H x D)

696 x 529 x 240mm

Net weight

47kg

Surge protection (DC / AC)

Type II / Type II

AFCI

Optional

Communication

WiFi (dongle included), RS485

Is the WiFi dongle included?

Yes. Both models on this page are supplied with the WiFi dongle for connection to the SolaX cloud.

What batteries can I use?

SolaX high-voltage HS-series batteries, within a battery voltage range of 180 to 800V. A minimum of 3 modules is needed.

Can it provide backup power?

Yes. It has EPS output with switchover under 10ms and 200% overload for 10 seconds, and it can operate off-grid or in a microgrid.

Can I connect two batteries?

Yes. It has two independent battery ports, which can also be paralleled to connect one larger battery.

Can it run several inverters together?

Yes. Up to 10 units can be paralleled for both on-grid and off-grid systems.

BTU Calculator

BTU & WATT Calculator

Room Dimensions

Length (in m):

Width (in m):

Height (in m):

Room Type

Living Room

Bedroom

Kitchen

Bathroom

Conservatory

Hallway

Glazing Type

Single Glazed

Double Glazed

Triple Glazed

External Walls

0 Wall

1 Wall

2 Walls

3 Walls

4 Walls

Insulation Level

Poor

Average

Good (New Build)

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