描述
✅ Wide Application Compatibility : Rated voltage covers 380/400/415/440V (50/60Hz) with a maximum withstand voltage of 690V. Ideal for industrial power distribution, commercial buildings, data centers, temporary construction power supply and other scenarios. Suitable for circuit protection of motors, pumps, fans, UPS and various loads.
✅ Dual-Effect Safety Protection : Adopts a thermo-magnetic tripping mechanism to accurately achieve dual protection of overload (thermal trip) + short circuit (magnetic trip). The instantaneous setting range is 8~12×In, effectively preventing overload heating and short circuit fire risks. With a mechanical life of 4000 times, it is stable and durable.
✅ High-Quality Craftsmanship : Silver alloy contacts and flame-retardant insulating housing resist high temperature, arc erosion and aging. The product has passed IEC 60947-2 and GB 14048.2 international certifications, with a breaking capacity of up to 37kA (under 415/440V working condition), and its safety performance is comparable to first-tier brands.
✅ Flexible Configuration Expansion : Supports the installation of auxiliary contacts, alarm contacts, shunt/undervoltage trip devices and leakage modules (ELCB). You can upgrade functions according to actual needs to meet complex power distribution requirements and provide a one-stop solution for multi-scenario protection.
Core Specifications
| Parameter | Specification Details |
|---|---|
| Model | ABN 403C 3P (Replacement Version) |
| Poles | 3P (3-phase, without neutral pole) |
| Rated Current | Adjustable 300A / 400A (Same frame size) |
| Rated Voltage | AC 380/400/415/440V (50/60Hz); Max AC 690V / DC 500V |
| Breaking Capacity | 37kA (@ 415/440V); 45kA (@ 380V) |
| Tripping Mode | Thermo-magnetic (Overload + Short Circuit Protection) |
| Installation Type | Fixed Type |
| Dimensions/Weight | 257mm×140mm×109mm / 6.2kg |
| Certifications | IEC 60947-2, GB 14048.2, KEMA |
Application Scenarios
▫ Commercial Buildings: Protection of power distribution panels, floor distribution boxes, main lighting circuits and central air conditioning systems in shopping malls, hotels and office buildings.
▫ Infrastructure: Power distribution for data centers, temporary construction power supply and municipal engineering equipment power supply.
▫ General Scenarios: Protection of line overload, short circuit and ground fault; dedicated for circuits that do not require frequent switching.
Why Choose Our Replacement Version?
❷ Fast Delivery & After-Sales Service: In-stock inventory, shipped upon order. 12-month warranty is provided. Professional technical team supports selection and installation guidance with fast after-sales response.
❸ Full Process Compatibility: Complete installation drawings, certification documents and test reports are available to meet the needs of independent stations, engineering procurement, foreign trade orders and other channels, complying with global power distribution standards.










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