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Shieldhz GF series PV DC isolator switches help match each solar installation to the correct DC-rated switch: GF40 for IP66 string boxes, GF51 for DIN rail or enclosed isolator assemblies, and GF41 for 1500V multi-pole cabinet routes.
Start with where the switch will be installed, then check DC voltage, current, pole count, enclosure protection, and the documents your market requires.
Use GF40 for rooftop or wall-mounted PV string isolation where the complete assembly needs IP66 protection and cable entry routing.
Use GF51 when the design needs either an IP20 DIN rail DC isolator core or an IP66 enclosed PV isolator assembly for combiner or inverter-side isolation.
Use GF41 for higher pole-count PV isolation, cabinet integration, and projects where contact route and handle orientation must be specified.
Compare installation point, voltage, current, enclosure rating, and documents before choosing a GF route.
| Project need | Recommended route | Why | Information to send |
|---|---|---|---|
| String-level rooftop isolation | GF40 | IP66 enclosed PV string route with M20, M25, or MC4 connection options; standard catalogue route covers 1000-1200V DC. | String voltage, current, contact code, cable entry, installation position. |
| Combiner output or DIN rail cabinet route | GF51 | GF51 includes IP20 DIN rail core forms and IP66 enclosed forms; confirm the exact route against the 300V, 600V, 800V, and 1500V DC rating rows. | System voltage, current row, 2P/4P/2H contact route, enclosure or DIN rail plan. |
| Multi-string switchgear panel isolation | GF41 | 1500V DC multi-pole route with 16A-55A current options, 2-10 pole structures, and defined mounting/handle codes. | Current, pole count, H/S/B/T contact route, HM/PM/DB/DC/EL installation code, handle orientation. |
| Outdoor canopy, carport, or wall-mounted disconnect | GF40 / GF51 enclosed route | Exposed installations need an enclosed assembly. GF40 is the first route for IP66 string-level boxes; use GF51 when its rating row or DIN/enclosed family better matches the project. | Environment, cable glands, weather exposure, quantity, target market. |
String-level roof isolator or DC disconnect near inverter or rooftop equipment.
Route: GF40 IP66 / MC4
Combiner or inverter-side solar DC isolator switch route for larger rooftop arrays.
Route: GF51 / GF40
PV array DC isolator switch route inside switchgear or combiner panels.
Route: GF41 / GF51
Exposed equipment disconnects where enclosure rating matters.
Route: GF40 / GF51 IP66Shieldhz is the export brand of Zhejiang Shihe Electric Co., Ltd. For PV DC isolation projects, the selected switch must match the electrical rating and installation environment, while the supplier must support samples, drawings, certificates, and quotation checks.
Model selection starts with maximum array voltage, current, and pole configuration; an AC isolator should not be reused in a DC PV circuit.
Outdoor PV installations need an enclosed assembly matched to exposure, cable entry, connector style, and IP requirement.
Zhejiang Shihe Electric Co., Ltd. was founded in 2014 and operates ISO 9001 production management in a 5,000+ sqm factory.
Shieldhz can check CE, TUV, UL, UKCA, CCC, RoHS, and CB documents against the selected model and target market.
DC generation
DC aggregation
GF51 / GF41 route
DC to AC
AC utility tie
Isolates each PV string for safe maintenance and fault handling.
Ensures complete DC isolation before inverter service and approval.
This is a selection map, not a wiring diagram. Use it to locate the isolator position, then confirm voltage, current, pole count, enclosure rating, and certificate requirements before quotation.
Use maximum array voltage rather than nominal string voltage. Confirm whether the project falls under the 1000V, 1200V, or 1500V DC catalogue range.
Match string current and parallel strings to the required 2 pole, 4 pole, or multi-pole contact configuration.
Choose the IP20 DIN rail core or IP66 enclosed assembly according to where the switch is installed.
Request the datasheet, certificate copy, dimensional drawing, wiring reference, and model-code confirmation before approval.
Use this when the switching function is selector, transfer, reversing, or custom cam logic.
View rotary cam switch selection pageUse this when the issue is enclosure, cable entry, weatherproofing, or local AC equipment isolation.
View waterproof isolator box pageUse the resources page for catalogue, certificate, drawing, and document package requests.
View Shieldhz catalogues and certificatesA PV DC isolator switch is a DC-rated switch-disconnector used to isolate solar strings, combiner outputs, inverter inputs, or PV equipment for maintenance and emergency shutdown. It must be selected by maximum DC voltage, operating current, pole configuration, enclosure rating, and installation point.
DC arcs do not naturally pass through zero current, so an AC isolator may not extinguish the arc safely. Use a DC-rated PV isolator matched to array voltage, current, and pole configuration.
Use GF40 for an IP66 rooftop DC disconnect or roof isolator assembly, GF51 for IP20 DIN rail core units or IP66 enclosed combiner and inverter-side isolation, and GF41 where a 1500V multi-pole DC isolator switch is needed.
Send DC voltage, string current, poles, installation location, enclosure protection requirement, certification target, quantity, MOQ target, delivery schedule, and whether the switch is installed at string, combiner, inverter, or equipment level.
Yes. The switch core protection differs from the complete enclosed assembly. Exposed rooftop, carport, and outdoor utility installations usually require an IP66 enclosed route, with cable entry and connector details confirmed against the selected GF model.
Common project references include IEC 60947-3 for switch-disconnector functions and IEC 60529 for IP protection terminology. Final compliance depends on the exact model, rating, and certification mark.
Yes. Shieldhz can review OEM DC isolator switch requirements for enclosure style, cable entry, handle marking, contact route, document package, and export market. Confirm the target model first, then send drawings or samples when custom marking or enclosure work is required.
Share DC voltage, operating current, pole configuration, installation point, IP rating, quantity, target certification market, and delivery schedule. Shieldhz will match the GF40, GF51, or GF41 route and confirm MOQ, lead time, drawings, and document package.
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