塑殼漏電保護斷路器DZ20L-400/4300 315A 100-300-500mA
產品概述
DZ20L-400/4300塑殼漏電保護斷路器是一款專為配電網絡設計的高性能保護裝置，適用于交流50Hz、額定電壓380V的電路中。該產品額定電流為315A，剩余動作電流可調范圍為100mA、300mA、500mA三檔，能夠靈活適應不同場景的漏電保護需求。其核心功能包括漏電保護、過載保護和短路保護，可有效防止人身觸電、設備絕緣損壞引發的火災風險，同時保障線路和電源設備的安全運行。產品采用塑殼式結構，具備手動操作和固定安裝特性，外殼設計兼顧耐用性與電氣隔離安全性。91015
技術特點
DZ20L-400/4300采用電子式漏電保護技術，內置零序電流互感器和電子放大組件，能夠精準檢測線路中的剩余電流并在毫秒級時間內觸發脫扣。其過載保護通過復式脫扣器實現反時限動作特性，短路保護則采用瞬時脫扣機制，分斷能力高達20kA（AC380V）。產品支持三相四線（3P+N）接線方式，適用于工業配電柜、建筑總開關等場景。透明外殼設計便于觀察內部狀態，且具備電源指示功能，提升操作便利性。機械壽命達20000次，滿足長期穩定運行需求。71123
應用場景
該斷路器廣泛應用于工礦企業、建筑工地、電力系統等領域的配電網絡，特別適合作為大型設備（如塔吊、配電柜）的總保護開關。其可調剩余電流功能使其既能用于人身間接接觸保護（100mA檔），也能防范電氣火災（300mA或500mA檔）。產品適用于潮濕、多塵等復雜環境，安裝時需確保線路垂直傾斜度不超過5°，并遠離強磁場干擾。101316
產品優勢
DZ20L-400/4300在同類產品中具有響應速度快（漏電動作時間≤0.2秒）、保護精度高、適應性強的特點。其模塊化設計簡化了維護流程，而緊湊的結構節省了安裝空間。用戶可根據實際需求自由選擇剩余動作電流檔位，兼顧安全性與供電連續性。產品嚴格遵循電氣隔離標準，主回路與操作機構完全隔離，確保操作安全。91221
Product Overview
The DZ20L-400/4300 Molded Case Leakage Circuit Breaker is a high-performance protection device designed for power distribution networks, suitable for AC 50Hz circuits with rated voltage of 380V. With a rated current of 315A and adjustable residual operating current settings (100mA/300mA/500mA), it provides flexible earth leakage protection for diverse applications. Its core functions include earth leakage protection, overload protection, and short-circuit protection, effectively preventing electric shocks, equipment insulation failures, and fire hazards. The product features a durable molded case structure supporting manual operation and fixed installation. 1510
Key Features
Equipped with electronic leakage protection technology, this breaker integrates a zero-sequence current transformer and amplification circuitry to detect residual current with millisecond-level response. The overload protection employs inverse-time characteristics via compound trippers, while short-circuit protection uses instantaneous tripping (breaking capacity up to 20kA at AC380V). Its 3P+N wiring suits industrial switchboards and main distribution panels. The transparent cover allows visual status checks, and the power indicator enhances operational safety. Mechanical endurance exceeds 20,000 cycles. 711
Applications
Ideal for mining facilities, construction sites, and power systems, this model serves as a main protection switch for heavy equipment (e.g., cranes, distribution cabinets). Adjustable sensitivity accommodates both personal shock prevention (100mA) and fire prevention (300mA/500mA). It performs reliably in humid or dusty environments when installed within 5° vertical tilt and away from strong magnetic fields. 1316
Advantages
The DZ20L-400/4300 stands out with rapid response (≤0.2s leakage tripping), high accuracy, and adaptability. Modular design simplifies maintenance, while compact dimensions save space. Users can select residual current thresholds to balance safety and power continuity. Full electrical isolation between main circuits and operating mechanisms ensures safety. 921
塑殼漏電保護斷路器DZ20L-400/4300 315A 100-300-500mA
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