CDM3-250S/3300塑殼斷路器產(chǎn)品介紹（中英雙語）
產(chǎn)品概述
CDM3-250S/3300系列塑殼斷路器是專為電力配電系統(tǒng)設(shè)計的保護與控制裝置，額定電流250A，配備200mm方形延伸手動操作機構(gòu)。產(chǎn)品采用模塊化結(jié)構(gòu)設(shè)計，適用于交流50/60Hz、額定工作電壓至690V的配電網(wǎng)絡(luò)，可實現(xiàn)對線路及用電設(shè)備的過載、短路等異常情況的可靠保護。殼體采用高強度工程塑料注塑成型，具備優(yōu)良的絕緣性能和機械強度，觸頭系統(tǒng)配置多重滅弧結(jié)構(gòu)，有效提升電氣壽命。
核心特點
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人性化操作機構(gòu)
配置方形延伸手操桿（操作桿長度200mm），可在配電柜面板外直接進行分合閘操作。旋鈕式手柄設(shè)計符合人體工學原理，操作力矩小于8N·m，設(shè)有明顯的分/合閘狀態(tài)指示標識，便于運維人員直觀辨識設(shè)備狀態(tài)。
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智能脫扣特性
配備三極熱磁式脫扣單元，瞬時脫扣整定值精準可控，長延時過載保護具備反時限特性。動靜觸頭采用銀基合金材料，配合特殊設(shè)計的導弧柵片結(jié)構(gòu)，有效縮短電弧持續(xù)時間，提升短路分斷可靠性。
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緊湊結(jié)構(gòu)設(shè)計
采用立體化布局方案，產(chǎn)品寬度僅105mm，深度控制于85mm以內(nèi)，節(jié)省配電柜安裝空間。全封閉式防護結(jié)構(gòu)滿足IP40防護等級要求，主回路與輔助端子采用分區(qū)隔離設(shè)計，確保操作安全性。
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便捷擴展功能
標配輔助觸點模塊插槽，可選配報警觸點、分勵脫扣等擴展單元。主回路接線端子支持35mm²以下銅導線直連，雙孔壓接結(jié)構(gòu)確保大電流通路的接觸可靠性。
適用范圍
本產(chǎn)品適用于工業(yè)廠房、商業(yè)建筑、基礎(chǔ)設(shè)施等領(lǐng)域的低壓配電系統(tǒng)，可作為主開關(guān)或分支開關(guān)使用，特別適合需要頻繁操作或遠程監(jiān)控的配電場景。配套的延伸操作桿可有效解決高壓柜體操作距離受限問題，滿足多種安裝環(huán)境需求。
Technical Specification of CDM3-250S/3300 MCCB with 200mm Extended Handle
Product Profile
The CDM3-250S/3300 molded case circuit breaker is designed for power distribution systems, featuring 250A rated current and 200mm square extended rotary handle. This modular device operates in AC 50/60Hz networks up to 690V, providing reliable protection against overload and short-circuit conditions. The arc-resistant thermoplastic housing integrates multiple arc-quenching chambers, ensuring stable dielectric performance and mechanical durability.
Key Features
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Ergonomic Operation
Equipped with 200mm square extension handle enabling front-panel operation outside switchgear cabinets. The rotary knob requires less than 8N·m operating torque with visible ON/OFF position indicators, allowing clear status identification.
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Precision Protection
Three-pole thermal-magnetic trip unit provides adjustable instantaneous tripping and inverse-time delayed overload protection. Silver-alloy contacts combined with optimized arc chutes ensure consistent breaking performance under fault conditions.
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Space-efficient Design
Compact dimensions (105mm width × 85mm depth) optimize panel space utilization. The fully enclosed IP40-rated housing adopts partitioned terminal layout, isolating power circuits from auxiliary components for enhanced safety.
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Flexible Configuration
Pre-installed auxiliary contact slots support optional alarm contacts or shunt trip modules. Dual-screw terminals accept copper conductors up to 35mm², featuring parallel contact surfaces for improved current-carrying stability.
Application Scenarios
Suitable for LV distribution systems in industrial plants, commercial complexes, and infrastructure projects. Ideal for applications requiring frequent operation or remote monitoring, particularly where cabinet depth restricts direct access. The extended handle facilitates safe operation in confined spaces or high-voltage environments.
Maintenance Guidance
Periodic inspection recommended every 12 months. Check contact wear via built-in mechanical indicator, clean ventilation slots with dry compressed air, and verify terminal tightness using calibrated torque wrench (recommended value: 4.5N·m). Avoid abrasive cleaners that may damage position markings.
（中英文字數(shù)總計約620字）
