Solar Lattice

Product

Enphase IQ9N Microinverters (IQ9N-A, IQ9N-HPB)

ID
prod:enphase-iq9n
IRI
https://solarlattice.org/kb/prod/enphase-iq9n
Status
active
Also known as
IQ9N, IQ9N-A, IQ9N-HPB, IQ9N-A-US, IQ9N-A-DOM-US, IQ9N-A-DOM-US-HPB, IQ9N Microinverter
Category
Inverters
Make
enphase
Product level
family

The Enphase IQ9N is a family of GaN-based residential microinverters that includes the IQ9N-A-US, IQ9N-A-DOM-US and IQ9N-HPB variants. The IQ9N-A-DOM-US-HPB delivers up to 440 VA continuous at 240 V and 415 VA at 208 V, with maximum continuous output currents of 1.83 A and 2.0 A. Its peak efficiency is 97.8 percent at 240 V and 97.7 percent at 208 V. CEC weighted efficiency is 97.5 and 97.0 percent. The microinverter must stay connected to an IQ Gateway or IQ Combiner, or it may stop operating. The HPB variant uses the IQ Cable on its AC side and needs Staubli MC4 connectors on its DC port. IQ9N units can be added to existing IQ7 or IQ8 systems on the same gateway and IQ System Controller, both grid-tied and with backup. Adding IQ7 or IQ8 units to an existing IQ9N-HPB site is not allowed. Sunlight Jump Start grid-forming PV works only when the system contains IQ8 and IQ9N units and no IQ7 Series microinverters. The unit is Class II double-insulated and includes ground fault protection. A solid red LED indicates a DC Resistance Low, Power Off condition, which triggers when PV-to-earth resistance drops below roughly 7 kilohms.

<!-- review notes

Claims

manufactured_by

c1 drafted · lead Enphase Energy

instance_of

c2 drafted · lead Microinverter

requires

c3 drafted · lead Enphase IQ Gateway

An IQ Gateway or IQ Combiner must be connected; system software periodically checks the link and microinverters may stop working without it.

c4 drafted · lead Enphase IQ Cable

Conditions: IQ9N-HPB variant; AC port connects to IQ Cable or IQ Field Wireable Connector

c5 drafted · lead Staubli MC4 PV connectors proposed

Conditions: IQ9N-HPB DC port must be mated with Staubli MC4 cable couplers evaluated by UL for intermateability

c6 drafted · lead Enphase Installer App

Conditions: Used to scan microinverter serial numbers and connect to the IQ Gateway during installation

review note: support check: partial - The passage says to scan serial numbers with the Installer App and connect to the IQ Gateway, but it never states the app is required.

compatible_with

c7 drafted · lead Enphase IQ8 Series Microinverters proposed

Scope: applications on-grid, backup

Conditions: IQ9N can be added to existing IQ8 systems on the same IQ Gateway and IQ System Controller, grid-tied or grid-forming with backup

c8 drafted · lead Enphase IQ7 Series Microinverters (IQ7, IQ7+, IQ7X, IQ7A) proposed

Scope: applications on-grid, backup

Conditions: IQ9N can be added to existing IQ7 systems on the same IQ Gateway and IQ System Controller, grid-tied or with backup

c10 drafted · lead Enphase IQ System Controller

Scope: applications backup

Conditions: Grid-forming (with backup) configurations; IQ System Controller, 2/3/3G/3M

c11 drafted · lead Enphase IQ Battery

Conditions: Solar Plus Battery with IQ Battery 3/10, 3T/10T, 5P or 10C; combined PV continuous output limited to 150% of battery rated power (200% for IQ8 plus IQ9N-HPB mixed systems) unless PV shedding is used

incompatible_with

c9 drafted · lead Enphase IQ7 Series Microinverters (IQ7, IQ7+, IQ7X, IQ7A) proposed

Conditions: Mixed systems including IQ7 Series do not support Sunlight Jump Start; IQ7 cannot be added to a site with existing IQ9N-HPB on the same gateway

review note: support check: partial - The passages say IQ7 cannot be added to a site with existing IQ9N-HPB and mixed systems lose Sunlight Jump Start, but they also say IQ9N can be added to IQ7 systems, so 'incompatible' overstates it.

implements

c12 verified · fact Grid forming

Conditions: Sunlight Jump Start, only in systems of IQ8 Series and IQ9N microinverters with no IQ7 Series

verified by: review-workflowverified on: 2026-10-24

c13 verified · fact DC ground-fault protection

Conditions: Class II double-insulated; requires PV modules with DC cables labeled PV wire or PV cable

verified by: review-workflowverified on: 2026-10-24

rated_power

c14 verified · fact nominal 440 V-A

Conditions: Maximum continuous output power, IQ9N-A-DOM-US-HPB at 240 V

verified by: review-workflowverified on: 2026-10-24review note: support check: partial - The table shows 440 and 415 and the headers show 240 V and 208 V, but the power row's columns are not labeled by voltage, so the 440-to-240 V mapping is only implied by order.; possible conflict with c15 (same source; check the conditions)

c15 drafted · lead nominal 415 V-A

Conditions: Maximum continuous output power, IQ9N-A-DOM-US-HPB at 208 V

review note: support check: partial - 415 is the second value and 208 V the second column, but the power row does not label the voltages, so the mapping is only implied by order.; possible conflict with c14 (same source; check the conditions)

rated_output_current

c16 drafted · lead nominal 1.83 A

Conditions: Maximum continuous output current, IQ9N-A-DOM-US-HPB at 240 V

review note: possible conflict with c17 (same source; check the conditions)

c17 drafted · lead nominal 2 A

Conditions: Maximum continuous output current, IQ9N-A-DOM-US-HPB at 208 V

review note: possible conflict with c16 (same source; check the conditions)

nominal_voltage

c18 drafted · lead nominal 240 V

Conditions: IQ9N-A-DOM-US-HPB AC output configuration; grid voltage range 211-264 V

review note: support check: partial - The grid range 211-264 V is the first value in the row and 240 V is the first column, but the range columns are unlabeled and 240 V nominal is only implied.; possible conflict with c19 (same source; check the conditions)

c19 drafted · lead nominal 208 V

Conditions: IQ9N-A-DOM-US-HPB AC output configuration; grid voltage range 183-229 V

review note: support check: partial - The 183-229 V range is the second value and 208 V the second column, but the range columns are unlabeled and 208 V nominal is only implied.; possible conflict with c18 (same source; check the conditions)

efficiency

c20 drafted · lead nominal 97.8 PERCENT

Conditions: Peak efficiency, IQ9N-A-DOM-US-HPB at 240 V

review note: possible conflict with c21 (same source; check the conditions); possible conflict with c22 (same source; check the conditions); possible conflict with c23 (same source; check the conditions)

c21 drafted · lead nominal 97.7 PERCENT

Conditions: Peak efficiency, IQ9N-A-DOM-US-HPB at 208 V

review note: possible conflict with c20 (same source; check the conditions); possible conflict with c22 (same source; check the conditions); possible conflict with c23 (same source; check the conditions)

c22 drafted · lead nominal 97.5 PERCENT

Conditions: CEC weighted efficiency, IQ9N-A-DOM-US-HPB at 240 V

review note: possible conflict with c20 (same source; check the conditions); possible conflict with c21 (same source; check the conditions); possible conflict with c23 (same source; check the conditions)

c23 drafted · lead nominal 97 PERCENT

Conditions: CEC weighted efficiency, IQ9N-A-DOM-US-HPB at 208 V

review note: possible conflict with c20 (same source; check the conditions); possible conflict with c21 (same source; check the conditions); possible conflict with c22 (same source; check the conditions)

Referenced by

Data