The Conext CL125 is a three-phase string inverter family from Schneider Electric. It comes as the CL125E for IEC markets and the CL125A for North America. Both versions are rated at 125 kW and 125 kVA at nominal AC voltage. The CL125A is built for 1500 VDC floating PV systems and has a single PV input. On the CL125A, full-power MPPT runs from 860 V to 1250 V, and the AC output is 600 V three-phase in star or delta (3P+PE). Peak efficiency is 98.8% for both versions. The CL125E has a European efficiency of 98.7% and the CL125A a CEC efficiency of 98.5%. Power factor can be set anywhere from 0.8 capacitive to 0.8 inductive. For communications it uses Modbus over two RS-485 ports that can be daisy-chained, and it is SunSpec compatible and certified. Local setup is through a front LED panel and the eConfigure CL125 app over Bluetooth 4.0. Firmware upgrades and configuration are done locally with the eConfigure app or the Conext CL EasyConfig tool. Many settings need a Level 2 user access account, which you request from a Schneider Electric representative. The electronics enclosure is rated Type 4X on the CL125A and IP 65 on the CL125E.
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manufactured_byc1 verified · fact Schneider Electric
sec=h124 h=cc0c11cf7068sec=h230 h=e1c49710c74asec=h4 h=7b910f38e7eaverified by: review-workflowverified on: 2026-10-24
rated_powerc2 drafted · lead nominal 125 KiloW
Conditions: Maximum AC output active power at PF=1 and nominal AC voltage; CL125E (IEC) and CL125A (NA)
tbl=56.r10 h=cdb2b1ede084c3 drafted · lead nominal 125 KiloV-A
Conditions: Maximum continuous apparent power at nominal AC voltage; CL125E (IEC) and CL125A (NA)
tbl=56.r12 h=159362e8ac9ac4 drafted · lead nominal 125 KiloW
Conditions: Conext CL125A, 1500 VDC systems (solution guide key specifications)
sec=h30 h=545ab8a7532bmppt_voltage_rangeConditions: Full-power MPPT voltage range, Conext CL125A
sec=h30 h=545ab8a7532bConditions: DC operating voltage range, Conext CL125A
sec=h30 h=545ab8a7532bnominal_voltagec7 drafted · lead nominal 600 V
Conditions: Three-phase AC output, star or delta (3P+PE), Conext CL125A
sec=h30 h=545ab8a7532befficiencyc8 drafted · lead nominal 98.8 PERCENT
Conditions: Peak efficiency, CL125E (IEC) and CL125A (NA)
tbl=58.r1 h=63709524fa95tbl=58 h=425df372530ereview note: possible conflict with c9 (same source; check the conditions); possible conflict with c10 (same source; check the conditions)
c9 drafted · lead nominal 98.7 PERCENT
Conditions: European efficiency, Conext CL125E (IEC)
tbl=58.r1 h=63709524fa95tbl=58 h=425df372530ereview note: possible conflict with c8 (same source; check the conditions); possible conflict with c10 (same source; check the conditions)
c10 drafted · lead nominal 98.5 PERCENT
Conditions: CEC efficiency, Conext CL125A (NA)
tbl=58.r1 h=63709524fa95sec=h30 h=545ab8a7532btbl=58 h=425df372530ereview note: possible conflict with c8 (same source; check the conditions); possible conflict with c9 (same source; check the conditions)
uses_protocolTwo RS-485 ports (RS-485_1 and RS-485_2) supporting daisy-chain wiring
tbl=60 h=2015029c2b68sec=h9 h=fbe53f142f89tbl=60 h=2015029c2b68sec=h9 h=fbe53f142f89sec=h30 h=545ab8a7532bc13 drafted · lead SunSpec Modbus
Stated as SunSpec compatible and certified
tbl=60 h=2015029c2b68sec=h30 h=545ab8a7532bBluetooth 4.0 link to the eConfigure CL125 app
tbl=60 h=2015029c2b68implementsc15 drafted · lead Maximum power point tracking
Single PV input; MPPT efficiency stated above 99% (static 99.5%, dynamic 99%)
sec=h30 h=545ab8a7532breview note: support check: partial - MPPT efficiency, MPPT voltage and single PV input are stated, though MPPT as a function is only implied.
c16 drafted · lead Constant power factor mode
Power factor adjustable from 0.8 capacitive to 0.8 inductive
sec=h30 h=545ab8a7532breview note: support check: partial - PF adjustment range is stated, but a constant power factor mode is not explicitly named.
compatible_withc17 drafted · lead Ungrounded PV array
Conditions: Designed for 1500 V floating PV systems
sec=h30 h=545ab8a7532bc18 drafted · lead 600 V three-phase delta service proposed
Conditions: 600 V three-phase delta AC output wiring (3P+PE), Conext CL125A
sec=h30 h=545ab8a7532brequiresc19 drafted · lead Level 2 user access proposed
Conditions: Many settings; account requested through a Schneider Electric representative
sec=h24 h=4e53ff6d56b4sec=h183 h=4e53ff6d56b4c20 drafted · lead eConfigure CL125 app proposed
Conditions: Local configuration and firmware upgrade (alternatively the Conext CL EasyConfig tool)
sec=h30 h=545ab8a7532btbl=60 h=2015029c2b68review note: support check: partial - App is listed for local configuration and firmware upgrade alongside EasyConfig, but 'requires' is overstated since the alternative exists.
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