- Preliminary Requirements & Compliance Scope
- Define Core Parameters
力: System voltage (230/400V AC single-phase/three-phase), total capacity, number of circuits, branch current, short-circuit breaking capacity (ICU/IC);
環境: Indoor/outdoor, IP rating (IP30 for indoor, IP54 for outdoor splash-proof, IP66 for corrosion-resistant), 材料 (cold-rolled steel sheet / 304 / 316 ステンレス鋼), 設置方法 (壁掛け式 / floor-standing / flush-mounted);
機能: Metering (multi-function electricity meter), surge protection (SPD), dual-power ATS switching, 遠隔監視 (Modbus/485), fire protection interlock.
- Mandatory Standards: IEC 61439, GB 7251.1, low-voltage switchgear assembly standards; components must be original Schneider (例えば, MCCB NSX/XT, MCB EA9/A9, ATS WATSN, 等); equipped with CCC and CE certifications; the manufacturer must hold low-voltage assembly qualification.
- Customization Process Steps
- Requirement communication → Quotation & proposal (including single-line/control diagrams, BOM list);
- Contract & drawing confirmation → Enclosure fabrication (drilling, bending, spraying, protection treatment);
- Component assembly & 配線 (separation of strong and weak current, clear wire marking);
- Factory testing (withstand voltage, 絶縁, on/off operation, protection setting, IP test);
- On-site installation, 試運転, and delivery of as-built documents (図面, certificates, テストレポート).
Ⅲ. Core Selection & 構成
- Enclosure & 保護
寸法: Common wall-mounted enclosures 400×500×200, 600×800×250; floor-standing cabinets XL21, BlokSeT, PanelSeT;
Coating: RAL7035 (telecommunication gray); outdoor models with sealing gaskets and rain hoods; 304 stainless steel for humid environments, 316 for coastal corrosive environments.
- Component Combination (Mainstream Schneider Models)
| 関数 | Recommended Models |
| Main Incoming | MCCB NSX, XT Series |
| Branch Protection | MCB A9, EA9 Series, with earth leakage (Vigi) |
| Dual Power Switching | WATSN Automatic Transfer Switch |
| サージ保護 | PPR, SPD Series |
| Metering | iEM3150 Multi-Function Meter |
- 制御回路 & Additional Functions: Control buttons, インジケーターライト, リレー, PLC modules; remote monitoring connectable to Schneider EcoStruxure system.
- Key Quality Control & Acceptance
- Factory Testing: Power frequency withstand voltage 2500V/1min without breakdown, insulation resistance ≥1000MΩ, temperature rise test, protection operation verification;
- On-site Acceptance: Consistency check between drawings and physical product, IP sealing inspection, energized load test, protection setting review;
- Document Delivery: Electrical schematic diagrams, layout drawings, component certificates, テストレポート, operation manuals.
- Examples of Common Customized Solutions
General Lighting Panel: Wall-mounted IP30, 1P+N main breaker + 12-way 1P EA9 MCB + Vigi earth leakage;
Outdoor Power Panel: 304 stainless steel IP54, 3P 100A XT MCCB main breaker, 3-way 3P 32A branches, equipped with SPD and ATS;
Data Center Dual Power Panel: BlokSeT enclosure, WATSN ATS switching, UPS interlock, 遠隔監視.
- Quotation, リードタイム & Avoidance Tips
- 価格要因: Component configuration, enclosure material and dimensions, functional complexity, certification requirements, order quantity;
- リードタイム: 7–10 days for standard wall-mounted panels, 2–4 weeks for complex floor-standing cabinets;
- Avoidance Tips: Original Schneider components must be confirmed in writing; specify IP rating, test items, and warranty period (generally 1–2 years) in the contract; avoid assembly from unqualified small manufacturers to prevent safety hazards.
Ⅶ. Supplier Selection
Prioritize Schneider Authorized Panel Builders (verifiable via official website certification);
Require provision of: factory qualification certificates, samples, factory testing procedures, after-sales response mechanism.
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![CHINT Electric の Kunlun シリーズの NXC-65 は 3 極 AC コンタクタです, NXCシリーズで定格65A. 完全なモデルは通常、NXC-65 として表されます。 [コイル電圧] [頻度] NXC-65 from the Kunlun Series by CHINT Electric is a 3-pole AC contactor, rated at 65A in the NXC series. The full model is typically expressed as NXC-65 [Coil Voltage] [Frequency]](https://www.bestcontactor.com/wp-content/uploads/2026/04/ScreenShot_2026-01-30_132315_324-419x560.png)



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