Maintenance & process guide for solar DC string fuses shipped on the China to Australia trade route. Audience: procurement, O&M, and compliance teams handling gPV-class fuses.
Procedural scope: 7-step maintenance process for DC string fuses (gPV class). Equipment class: gPV DC fuse (10×38 mm or 14×51 mm cylindrical, fuse-link type). Trade corridor: CN→AU (sea freight; port-of-entry varied). Horizon: 2026-09-22 evidence pack; duty figures pending live ABF Working Tariff lookup. Limitation: all unit prices, freight rates, labour rates, and binding duty rates are placeholders requiring live supplier / forwarder / customs broker confirmation. Reference equipment family used for torque, breaking capacity, and test-procedure anchors: Eaton Bussmann PV-A10F series (10×38 mm, 1000 V DC, 25 A gPV) per Eaton Bussmann solar fuse datasheet, with cross-reference to Littelfuse SPFI series (10×38 mm, 1000 V DC, 20 A gPV) per Littelfuse SPFI solar fuse datasheet. Treat specific OEM parts as model assumptions if the buyer's installed base is different.
| Parameter | Value |
|---|---|
| Verdict | Proceed with the 7-step process subject to OEM manual, AS/NZS 5033, AS/NZS 4836, ABF Working Tariff, and ChAFTA verification. |
| Equipment class | DC string fuse, gPV class (10×38 mm or 14×51 mm cylindrical fuse-link, 1000–1500 V DC) |
| Reference model (assumption) | Eaton Bussmann PV-A10F series (10×38 mm, 1000 V DC, 25 A gPV) |
| Trade corridor | China → Australia (sea freight; typical ports Sydney / Melbourne / Fremantle) |
| Horizon | 2026-09-22 evidence pack |
| Binding duty rate | PENDING — confirm at ABF Working Tariff against HS 8536.10 and ChAFTA preference |
| GST | 10% on the taxable importation value (verify current ATO rate at the time of import) |
| Limitation | Indicative costs only; OEM datasheet, ABF lookup, and ChAFTA eligibility must be confirmed at the time of import and maintenance. |
Owner column reflects the typical accountable role. Inputs and outputs are physical or document artefacts referenced by filename in the document checklist below. Torque values, breaking capacity, and test procedures follow the Eaton Bussmann PV-A10F datasheet and AS/NZS 5033:2021 §4 (array protection).
| Step # | Action | Owner | Input doc | Output doc | Done-when |
|---|---|---|---|---|---|
| 1 | Open the OEM datasheet and certificate pack; confirm gPV class, voltage rating, breaking capacity, and the CCC (origin) plus RCM (Australia) references. | Compliance officer | OEM datasheet (PDF) | Sign-off entry in MAINT_LOG_R14.xlsx |
Datasheet, CCC reference, and RCM evidence are all present and recorded. |
| Isolate DC disconnect, visually inspect fuse bodies and holders, run a thermal scan to flag hot spots. | Site technician | Isolation permit | Thermal image set saved as THERM_SCAN_YYYYMMDD.zip |
No thermal anomaly above the threshold defined in the OEM manual is recorded. | |
| Use a category-rated multimeter to confirm open-circuit on a suspected fuse versus continuity on a healthy one. | Site technician | Calibrated multimeter (last cal date in CAL_REG.xlsx) |
Multimeter reading entry in MAINT_LOG_R14.xlsx |
Reading is consistent with a tripped (open) or healthy (closed) state and recorded. | |
| Procure like-for-like OEM-listed replacement gPV fuse (e.g. Eaton Bussmann PV-A10F25A or cross-referenced equivalent) with matching voltage, current, and breaking capacity (≥30 kA per Bussmann PV-A10F datasheet). | Procurement | Approved vendor list (AVL_R14.csv) |
Purchase order and supplier datasheet | Replacement part number matches the OEM cross-reference table. | |
| Fit the replacement fuse using an insulated torque wrench set to the OEM-stated torque value (e.g. 2.5–3.0 N·m for Bussmann PV-A10F holder per datasheet, rev. 2023). | Licensed electrician | OEM installation manual | Torque entry in MAINT_LOG_R14.xlsx |
Applied torque equals OEM specification within tolerance. | |
| Re-energise the string and verify normal string current with no thermal anomaly within the re-test interval. | Site technician | Re-energise permit | Verification record in STRING_TEST_YYYYMMDD.pdf |
String current matches design and thermal scan is clean. | |
| Update the maintenance log and the import file with the replacement batch certificate reference. | Compliance officer | Maintenance log, supplier CoC | Updated entry in IMPORT_FILE_R14.pdf |
Log, import file, and certificate references all reconcile. |
Tick each file before the shipment is closed or the maintenance event is signed off. Filenames are literal — keep the exact naming convention on shared drives. Reference document for the gPV fuse cross-check: Eaton Bussmann PV-A10F datasheet (rev. 2023).
OEM_DATASHEET_FUSE_R14.pdf — manufacturer datasheet, gPV class (reference: Eaton Bussmann PV-A10F series)CCC_CERT_ORIGIN.pdf — China Compulsory Certification evidenceRCM_EVIDENCE_AU.pdf — Regulatory Compliance Mark evidence for Australia (per EESS / ACMA)CAL_REG.xlsx — calibration register for test instrumentsISOLATION_PERMIT_YYYYMMDD.pdf — site isolation permitTHERM_SCAN_YYYYMMDD.zip — thermal image setMAINT_LOG_R14.xlsx — maintenance logAVL_R14.csv — approved vendor listPURCHASE_ORDER_FUSE.pdf — purchase orderSUPPLIER_COC.pdf — supplier certificate of conformitySTRING_TEST_YYYYMMDD.pdf — post-replacement string testIMPORT_FILE_R14.pdf — import file (commercial invoice, packing list, certificates)DC_FUSE_CHECKLIST_R14.pdf — signed copy of this checklist| Phase | Activity | Indicative duration | Notes |
|---|---|---|---|
| T0 — Pre-shipment | Datasheet, CCC, RCM evidence review | 1–2 business days | Done before goods leave origin. |
| T1 — In transit | Document set compilation for customs | Sea freight | Aligns with vessel schedule. |
| T2 — Customs & duty | ABF lodgement, biosecurity, RCM check | 2–5 business days | Subject to inspection queue. |
| T3 — Site receipt | Incoming inspection and storage | 1 business day | Verify part numbers vs PURCHASE_ORDER_FUSE.pdf. |
| T4 — Maintenance event | Steps 2–6 of the step sequence | 0.5–1 business day | Outage window planned in advance. |
| T5 — Close-out | Log update, certificate filing | 0.5 business day | Final sign-off by compliance officer. |
All values below are indicative placeholders. TradVolt does not publish hard prices; live quotes must be obtained from suppliers and freight forwarders.
| Slot | Indicative range | Status | Source |
|---|---|---|---|
| Unit FOB Shenzhen (gPV fuse, indicative) | Indicative — supplier quote required | UNCERTAIN | OEM datasheet (price on request) |
| Sea freight CN→AU (per ctn, indicative) | Indicative — freight quote required | UNCERTAIN | Freight forwarder quote |
| AU duty & GST | See HS & duty block below | PENDING | ABF working tariff |
| Site labour (replacement, indicative) | Indicative — licensed electrician quote | UNCERTAIN | IEC catalogue reference; AS/NZS 4836 scope |
| Thermal imaging service | Indicative — service provider quote | UNCERTAIN | Service provider quote |
| Field | Value |
|---|---|
| HS code (indicative) | 8536.10 — Fuses (indicative; verify by construction) |
| HS code lookup | Australian Border Force — home (deep ABF tariff pages were moved during the 2024–25 restructure; use the ABF search and "Working Tariff" tool from the home page rather than guessing a deep URL) |
| General rate (FTA-unbound) | PENDING — confirm at ABF working tariff |
| China–Australia FTA (ChAFTA) preference | PENDING — confirm eligibility, Certificate of Origin required |
| GST | 10% on the taxable importation value (verify current ATO rate at the time of import) |
| Source | ABF Working Tariff (from abf.gov.au); ChAFTA text (DFAT) |
A gPV (photovoltaic) class fuse is the typical selection for DC string protection, rated for DC voltage and current according to the OEM datasheet and array design. Reference: AS/NZS 5033:2021 Installation and safety requirements for photovoltaic (PV) arrays, Clause 4 (array protection). Confirm against the inverter and module OEM instructions.
Source: AS/NZS 5033:2021 — Standards Australia catalogue (search "AS/NZS 5033:2021" for the current edition and revision).
At origin: CCC evidence where applicable. For Australia: evidence supporting the Regulatory Compliance Mark (RCM) under the Electrical Equipment Safety System (EESS) for declared electrical equipment, as administered by the relevant Australian regulators. Carry the supplier Certificate of Conformity (CoC) and the OEM datasheet with every batch.
Source: EESS — Electrical Regulatory Authorities Council; RCM evidence requirements — ACMA Regulatory Compliance Mark.
Replacement must be carried out by a competent person under local electrical safety rules (for example, a licensed electrician), following AS/NZS 4836:2023 Safe working on or near low-voltage electrical installations and equipment. De-energise and isolate before opening fuse holders.
Source: AS/NZS 4836:2023 — Standards Australia catalogue (search "AS/NZS 4836:2023" for the current edition).
Follow the interval defined in the OEM installation manual and the site maintenance plan. Thermal scanning during routine PV array inspections is a common practice, supported by AS/NZS 5033:2021 §4 maintenance provisions and the OEM manual interval.
Source: AS/NZS 5033:2021 §4 — Standards Australia catalogue.
Use the ABF Working Tariff (from abf.gov.au) and the ChAFTA schedule (DFAT publication), and confirm the rate binding at the time of import with a licensed customs broker. See the HS & duty block above.
Source: ABF — abf.gov.au; ChAFTA — DFAT ChAFTA page.
| # | Source / standard | Specific document | URL | Used for |
|---|---|---|---|---|
| 1 | Eaton Bussmann — gPV fuse datasheet (model assumption) | PV-A10F series, 10×38 mm, 1000 V DC, 25 A gPV, datasheet rev. 2023 | Eaton Australia / Bussmann | Breaking capacity (≥30 kA), torque (2.5–3.0 N·m holder), test procedures |
| 2 | Littelfuse — gPV fuse datasheet (cross-reference) | SPFI series, 10×38 mm, 1000 V DC, 20 A gPV, datasheet rev. 2022 | Littelfuse | Cross-check of gPV ratings and DC interrupt rating |
| 3 | Standards Australia — AS/NZS 5033:2021 | Installation and safety requirements for photovoltaic (PV) arrays, Clause 4 (array protection) | Standards Australia catalogue — search "AS/NZS 5033:2021" | DC string protection requirements, fuse selection, maintenance interval |
| 4 | Standards Australia — AS/NZS 4836:2023 | Safe working on or near low-voltage electrical installations and equipment | Standards Australia catalogue — search "AS/NZS 4836:2023" | Competent-person requirement, de-energise/isolate procedure |
| 5 | Australian Border Force — Working Tariff | Working Tariff (current at time of import) — search HS 8536.10 | ABF — abf.gov.au | General duty rate for HS 8536.10 (fuses) |
| 6 | DFAT — China–Australia Free Trade Agreement (ChAFTA) | ChAFTA text and rules of origin, Article 2.4 (tariff elimination), Annex 2-I (product-specific rules) | DFAT ChAFTA page | ChAFTA preference for HS 8536.10, Certificate of Origin requirement |
| 7 | China Compulsory Certification (CCC) — origin evidence | CCC implementation rules for circuit protection devices (fuses) | SAMR (State Administration for Market Regulation) | CCC evidence for fuses of Chinese origin |
| 8 | ACMA — Regulatory Compliance Mark (RCM) | RCM notice and supplier evidence requirements | ACMA — Regulatory Compliance Mark | RCM evidence for in-scope electrical equipment supplied in Australia |
| 9 | ERAC — Electrical Equipment Safety System (EESS) | EESS declared equipment lists and registration | ERAC | Confirmation that a gPV fuse is in-scope EESS equipment and registration pathway |
| Claim | Source row | File / section |
|---|---|---|
| gPV class fuses are typical for DC string protection (10×38 mm, 1000 V DC, ≥20 kA DC). | 1, 2, 3 | Eaton Bussmann PV-A10F datasheet rev. 2023; Littelfuse SPFI datasheet rev. 2022; AS/NZS 5033:2021 §4 |
| CCC evidence is required at origin for fuses within scope of CCC implementation rules. | 7 | SAMR CCC implementation rules for circuit protection devices |
| RCM evidence is required for Australia for declared electrical equipment under EESS. | 8, 9 | ACMA RCM notice; ERAC EESS declared equipment lists |
| HS 8536.10 is indicative for fuses. | 5 | ABF Working Tariff, heading 8536 (apparatus for switching/protecting/connecting), subheading 8536.10 (fuses) |
| Duty rate binding at time of import. | 5 | ABF Working Tariff — live lookup at time of import |
| ChAFTA preference requires Certificate of Origin (Annex 2-I PSR satisfied for HS 8536.10). | 6 | DFAT ChAFTA text, Article 2.4 and Annex 2-I |
| Replacement must be by a competent person following AS/NZS 4836:2023. | 4, 1 | AS/NZS 4836:2023; OEM installation manual |
| Thermal scanning during routine PV inspection. | 3, 1 | AS/NZS 5033:2021 §4; OEM manual (Bussmann PV-A10F rev. 2023) |
| Calibrated multimeter used for fuse test (continuity vs open-circuit). | 1 | Bussmann PV-A10F datasheet rev. 2023 — test procedure; CAL_REG.xlsx |
| Torque wrench set to OEM value (2.5–3.0 N·m for PV-A10F holder). | 1 | Bussmann PV-A10F datasheet rev. 2023 — holder torque section |
TradVolt publishes procedural guides for B2B green-tech trade. Always cross-check against the current OEM manual, the applicable Australian or New Zealand standard, and the binding customs instrument at the time of import.