DZ20L-250/4300B塑殼漏電保護斷路器產(chǎn)品介紹
【產(chǎn)品概述】
DZ20L-250/4300B塑殼漏電保護斷路器是針對工業(yè)配電系統(tǒng)研發(fā)的專業(yè)保護裝置，額定工作電流250A，集成線路過載、短路保護及漏電監(jiān)測功能于一體。產(chǎn)品采用模塊化結(jié)構(gòu)設(shè)計，具備可調(diào)式漏電動作電流設(shè)定（100mA/300mA/500mA）與0.3秒延時動作特性，有效平衡供電連續(xù)性與保護靈敏度的需求。外殼采用高強度工程塑料制造，防護等級達到IP40，適用于各類電氣環(huán)境。
【核心功能】
- 智能漏電保護：通過電磁式電流互感器實時監(jiān)測漏電信號，當線路漏電值達到設(shè)定閾值時，執(zhí)行機構(gòu)可在0.3秒內(nèi)完成分斷動作，降低人身觸電風(fēng)險。
- 多級保護協(xié)同：整合熱磁脫扣機構(gòu)實現(xiàn)過載長延時保護與短路瞬時保護雙重機制，額定分斷能力達35kA，可有效抑制電氣火災(zāi)隱患。
- 參數(shù)可視化調(diào)節(jié)：旋轉(zhuǎn)式電流整定旋鈕配合刻度指示窗，便于工程人員根據(jù)現(xiàn)場需求精確調(diào)整保護參數(shù)。
【應(yīng)用場景】
適用于400V及以下低壓配電系統(tǒng)，典型應(yīng)用包括：
- 工業(yè)廠房動力配電柜主開關(guān)
- 商業(yè)建筑樓層分配電箱
- 戶外箱式變電站出線保護
- 大型機械設(shè)備電源控制
- 臨時施工用電系統(tǒng)保護
【設(shè)計特點】
• 機構(gòu)優(yōu)化：雙斷點觸頭結(jié)構(gòu)配合高效滅弧系統(tǒng)，提升分斷速度與電氣壽命
• 狀態(tài)可視：機械式分合指示器與漏電動作指示窗口，實現(xiàn)運行狀態(tài)直觀監(jiān)測
• 安裝便捷：標準化35mm導(dǎo)軌安裝設(shè)計，支持垂直/水平多方位固定方式
• 維護簡便：可拆卸式端子罩設(shè)計，方便接線檢查與部件更換
DZ20L-250/4300B Molded Case Leakage Circuit Breaker Product Introduction
[Product Overview]
The DZ20L-250/4300B molded case leakage circuit breaker is a professional protection device developed for industrial power distribution systems. With a rated operational current of 250A, it integrates line overload protection, short-circuit protection, and leakage monitoring functions. Featuring modular design, the product offers adjustable leakage operating current settings (100mA/300mA/500mA) and 0.3-second delayed operation characteristics, effectively balancing power supply continuity with protection sensitivity. The housing utilizes high-strength engineering plastics, achieving IP40 protection level for various electrical environments.
[Core Functions]
- Intelligent Leakage Protection: Employs electromagnetic current transformers for real-time leakage monitoring. When leakage reaches preset thresholds, the actuator completes breaking within 0.3 seconds to reduce electric shock risks.
- Multi-level Protection Coordination: Combines thermal-magnetic trip mechanism for overload time-delay protection and short-circuit instantaneous protection, with rated breaking capacity up to 35kA, effectively suppressing electrical fire hazards.
- Visual Parameter Adjustment: Rotary current setting knob with scale indicator window enables precise protection parameter adjustments according to field requirements.
[Application Scenarios]
Suitable for 400V and below low-voltage distribution systems, including:
- Main switches for industrial plant power distribution cabinets
- Commercial building floor distribution boxes
- Outdoor substation outlet protection
- Power control for large mechanical equipment
- Temporary construction power system protection
[Design Features]
• Mechanism Optimization: Double-break contact structure with efficient arc-extinguishing system enhances breaking speed and electrical endurance
• Visual Status Indication: Mechanical ON/OFF indicator and leakage action window enable intuitive operation monitoring
• Easy Installation: Standard 35mm rail mounting compatible with vertical/horizontal fixation
• Maintenance Friendly: Detachable terminal cover facilitates wiring inspection and component replacement
（中英文字符總數(shù)：約820字）
