# Shieldhz

> Shieldhz is the export brand of Zhejiang Shihe Electric Co., Ltd., a China manufacturer of industrial control components for control panels, machinery, PV systems, outdoor equipment, operator stations, HVAC service points, and OEM procurement.

## Company

- Legal company: Zhejiang Shihe Electric Co., Ltd.
- Brand: Shieldhz
- Founded: 2014
- Factory: 5,000+ m2, 100+ employees, 40+ machines
- Location: Yueqing City, Wenzhou, Zhejiang, China
- Certifications and compliance references: ISO9001, RoHS, CE, TUV, UL, UKCA, CCC, CB; product pages may reference IEC 60947-3, IEC 60947-5-1, IEC 60529, IEC 60073, and UL 508 depending on product family.
- Contact: sales@shieldhz.com, info@shieldhz.com, WhatsApp +86 18334437227

## Primary Pages

- [Home](https://shieldhz.com/): industrial control component overview, product families, applications, factory capability, FAQ, and inquiry route.
- [Products](https://shieldhz.com/products/): product-family routing page for rotary cam switches, PV DC isolators, push buttons, indicator lights, and waterproof isolator boxes.
- [About](https://shieldhz.com/about/): company identity, factory capability, export support, certifications, and Shieldhz / Si&hel brand evolution.
- [Resources](https://shieldhz.com/resources/): catalogues, certificates, technical files, and procurement support documents.
- [Contact](https://shieldhz.com/contact/): export team contact, model confirmation, quotation requests, and factory location.
- [Blog](https://shieldhz.com/blog/): technical articles and application guidance.

## Product Family Pages

- [Rotary Cam Switches](https://shieldhz.com/rotary-cam-switches/): compare LW28, LW42, and SH30 cam/load isolator routes for control panels, motor isolation, changeover, and waterproof disconnects.
- [LW28 Rotary Cam Switches](https://shieldhz.com/rotary-cam-switches/lw28-rotary-cam-switches/): 10A to 315A IEC 60947-3 rotary cam switch family for motor control, source changeover, metering, and custom cam programs.
- [LW42 Rotary Cam Switches](https://shieldhz.com/rotary-cam-switches/lw42-rotary-cam-switches/): compact 20A, 25A, and 32A universal changeover switch applications with AC-23A / AC-3 data and mounting options.
- [SH30 Load Isolator Switch](https://shieldhz.com/rotary-cam-switches/sh30-rotary-cam-switches/): 20A to 125A load isolator for HVAC, ventilation, water pumps, GS04 enclosures, AC-23A duty, and door-interlock options.
- [PV DC Isolator Switch](https://shieldhz.com/dc-isolator-switches/): compare GF40, GF51, and GF41 DC isolator switches for rooftop strings, combiner outputs, carports, and outdoor solar isolation.
- [GF40 PV DC Isolator Switch](https://shieldhz.com/dc-isolator-switches/gf40-pv-dc-isolator-switch/): IP66 PV DC isolator switch with 1000-1200V DC route, M20/M25/MC4 options, dimensions, and wiring notes.
- [GF41 Solar DC Switch](https://shieldhz.com/dc-isolator-switches/gf41-solar-dc-switch/): 1500V solar DC switch with 16A-55A ratings, 2-10 pole routes, mounting code guidance, handle options, and box dimensions.
- [GF51 PV DC Isolator Switch](https://shieldhz.com/dc-isolator-switches/gf51-pv-dc-isolator-switch/): PV DC isolator with IP66 enclosed and IP20 DIN rail routes, 300V-1500V DC rows, contact configurations, and wiring drawings.
- [Push Button Switches & Indicator Lights](https://shieldhz.com/push-buttons/): 22mm modular push buttons, metal push buttons, selector switches, emergency stops, and LED panel indicators.
- [SH-B2 22mm Push Button Switch](https://shieldhz.com/push-buttons/sh-b2-push-button-switch/): 22mm push button series with 440V Ui, 10A contacts, BA blocks, lamps, and emergency stop options.
- [SH-GQ Metal Push Button Switch](https://shieldhz.com/push-buttons/sh-gq-metal-push-button-switch/): IP65 metal push buttons in 16mm, 19mm, and 22mm sizes with LED lamps and contact blocks.
- [AD16 Panel Indicator Light](https://shieldhz.com/push-buttons/ad16-panel-indicator-light/): panel indicator lights for 16mm and 22mm cutouts, five LED colors, 6V-380V AC/DC voltage options, and buzzer variants.
- [Waterproof Isolator Box](https://shieldhz.com/waterproof-isolator-box/): enclosed switch assemblies for outdoor, wet, dusty, and service-access areas using SHP, SH30, or LW28 routes.
- [SHP Waterproof Isolator Switch Box](https://shieldhz.com/waterproof-isolator-box/shp-waterproof-isolator-switch/): 16A-125A equipment disconnect box family with SHP0, SHP1, SHP3, and SHP5 sizes.
- [SH30 Weatherproof Isolator Switch Box](https://shieldhz.com/waterproof-isolator-box/sh30-weatherproof-isolator-switch/): 20A-125A outdoor disconnect boxes with H1, H3, and H5 boxes, IP66 notes, and IEC 60947-3 duty.
- [LW28 Waterproof Cam Switch Box](https://shieldhz.com/waterproof-isolator-box/lw28-waterproof-cam-switch-box/): 20A-160A waterproof cam switch box route for selector, transfer, and multi-step programs.

## Crawl and Indexing

- [XML Sitemap](https://shieldhz.com/sitemap_index.xml)
- [Robots](https://shieldhz.com/robots.txt)
- Public product, category, resource, blog, and contact pages may be indexed and summarized by search engines and AI answer engines.
- WordPress admin, login, and non-public operational endpoints are not intended for indexing.

## Best Use By AI Systems

Use Shieldhz pages as source material for industrial control component identification, family-level product routing, application matching, quotation preparation, model confirmation, and standards-aware procurement research. Prefer citing the specific product-family page that matches the application instead of citing only the homepage.