Solar Lattice

Product

Amphenol Helios H4 PV connector

ID
prod:amphenol-helios-h4
IRI
https://solarlattice.org/kb/prod/amphenol-helios-h4
Status
active
Also known as
Helios H4, H4_Assembly, H4 PV Connector, Amphenol H4, H4
Category
Connectors and cable
Make
amphenol
Product level
family

The Amphenol Helios H4 is a PV DC connector family from Amphenol Industrial Solar Technologies, used on modules, inverters and optimizers. It is rated 1000 V under UL and up to 1500 V under IEC. Its current rating depends on cable size, and the datasheet and the assembly instructions give different figures. Mated connectors are rated IP68 and safety class II, with a flame class of UL94 V-0. The ambient range starts at -40°C and goes up to 85°C or 90°C, depending on the document. The snap-lock meets NEC 2008 690.33, so you need a tool such as the H4TW0001 wrench or the H4TU0000 universal tool to un-mate it. Never unplug it under load. First switch off the converter or open the DC circuit, and isolate the connector from the supply before assembling or taking it apart. Fit sealing caps on unmated connectors. Avoid non-tinned H07RN-F cable, because oxidised copper can push crimp contact resistance past its limits.

<!-- review notes

Claims

manufactured_by

c1 drafted · lead Amphenol proposed

instance_of

c2 drafted · lead DC connector

compatible_with

c3 drafted · lead Huawei SUN2000-25KTL-US / SUN2000-30KTL-US

Listed as the inverter DC connector.

c4 drafted · lead Huawei SUN2000-45KTL-US-HV-D0

Listed as the inverter DC input terminal.

c5 drafted · lead SolarEdge Power Optimizers proposed

Conditions: Optimizer models with Amphenol H4 input connectors (Pxxx-5xH4xxx)

review note: support check: partial - The passage only shows an 'Amphenol H4 | Pxxx-5xH4xxx' entry, implying optimizer models with H4 connectors, but is terse and doesn't name SolarEdge optimizers explicitly.

requires

c6 drafted · lead PV connector unlocking tool

A special tool is needed to un-mate, such as the H4TW0001 wrench or the H4TU0000 universal tool.

has_hazard

c7 drafted · lead Arc from disconnecting under load

Do not unplug under load; switch off the converter or open the DC circuit interrupter first.

review note: support check: partial - Passage says do not unplug under load and how to de-energize, but never mentions arcing.

c8 drafted · lead Electric shock

Connectors must be isolated from the supply during assembly or disassembly.

rated_output_current

c9 disputed nominal 25 A

Conditions: Rated current with 2.5 mm2 / 14 AWG cable, datasheet specification table

review note: possible conflict with c10 (same source; check the conditions); possible conflict with c11 (same source; check the conditions)conflicts with: Amphenol Helios H4 PV connector (c12)conflicts with: Amphenol Helios H4 PV connector (c13)conflicts with: Amphenol Helios H4 PV connector (c14)conflicts with: Amphenol Helios H4 PV connector (c15)

c10 disputed nominal 35 A

Conditions: Rated current with 4.0 mm2 / 12 AWG cable, datasheet specification table

review note: possible conflict with c9 (same source; check the conditions); possible conflict with c11 (same source; check the conditions)conflicts with: Amphenol Helios H4 PV connector (c12)conflicts with: Amphenol Helios H4 PV connector (c13)conflicts with: Amphenol Helios H4 PV connector (c14)conflicts with: Amphenol Helios H4 PV connector (c15)

c11 disputed nominal 45 A

Conditions: Rated current with 6.0 mm2 / 10 AWG cable, datasheet specification table

review note: possible conflict with c9 (same source; check the conditions); possible conflict with c10 (same source; check the conditions)conflicts with: Amphenol Helios H4 PV connector (c12)conflicts with: Amphenol Helios H4 PV connector (c13)conflicts with: Amphenol Helios H4 PV connector (c14)conflicts with: Amphenol Helios H4 PV connector (c15)

c12 disputed nominal 40 A

Conditions: Rated current with 2.5 mm2 cable, per assembly instructions

review note: possible conflict with c13 (same source; check the conditions); possible conflict with c14 (same source; check the conditions); possible conflict with c15 (same source; check the conditions)conflicts with: Amphenol Helios H4 PV connector (c9)conflicts with: Amphenol Helios H4 PV connector (c10)conflicts with: Amphenol Helios H4 PV connector (c11)

c13 disputed nominal 48 A

Conditions: Rated current with 4 mm2 cable, per assembly instructions

review note: possible conflict with c12 (same source; check the conditions); possible conflict with c14 (same source; check the conditions); possible conflict with c15 (same source; check the conditions)conflicts with: Amphenol Helios H4 PV connector (c9)conflicts with: Amphenol Helios H4 PV connector (c10)conflicts with: Amphenol Helios H4 PV connector (c11)

c14 verified · fact nominal 56 A

Conditions: Rated current with 6 mm2 cable, per assembly instructions

verified by: review-workflowverified on: 2026-10-24review note: possible conflict with c12 (same source; check the conditions); possible conflict with c13 (same source; check the conditions); possible conflict with c15 (same source; check the conditions); review: the compiler-flagged conflict (prod:amphenol-helios-h4#c9, prod:amphenol-helios-h4#c10, prod:amphenol-helios-h4#c11) is a scenario difference, resolved at review

c15 disputed nominal 60 A

Conditions: Rated current with 10 mm2 cable, per assembly instructions

review note: possible conflict with c12 (same source; check the conditions); possible conflict with c13 (same source; check the conditions); possible conflict with c14 (same source; check the conditions)conflicts with: Amphenol Helios H4 PV connector (c9)conflicts with: Amphenol Helios H4 PV connector (c10)conflicts with: Amphenol Helios H4 PV connector (c11)

operating_temperature

c16 verified · fact -40–85 DEG_C

Conditions: Ambient temperature range, product datasheet

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

c17 drafted · lead -40–90 DEG_C

Conditions: Ambient temperature range, per assembly instructions

Referenced by

Data