CDM3-250F/42002B 140A塑殼斷路器產品介紹
一、產品概述
CDM3-250F/42002B 140A塑殼斷路器是為低壓配電系統開發的保護裝置，采用模塊化設計理念，適用于額定工作電壓至690V，額定電流140A的交流電路中。產品具備過載、短路保護功能，通過優化電弧能量控制技術，有效提升設備運行穩定性。緊湊型結構設計在保證性能的同時，節省了配電柜空間占用。
二、結構特點
- 創新滅弧系統：采用多級氣吹滅弧結構，通過優化滅弧柵片布局，縮短電弧停滯時間，提升分斷可靠性
- 精密脫扣機構：雙金屬片與電磁系統協同工作，實現精確的電流-時間特性配合，動作誤差控制在±10%以內
- 模塊化附件：支持加裝輔助觸點、分勵脫扣等擴展模塊，滿足多樣化控制需求
- 強化殼體結構：工程塑料外殼經耐候性改良，具備抗沖擊、耐腐蝕特性，防護等級達到IP40
三、應用場景
本產品主要應用于：
- 工業廠房配電系統主干線路保護
- 商業建筑樓層配電箱總開關
- 光伏發電系統直流側過流防護
- 港口機械動力回路控制節點
- 軌道交通輔助供電單元
四、安全保護機制
配備可視化分合閘指示窗，通過機械聯鎖裝置防止誤操作。觸頭系統采用銀基合金材料，配合V型開槽設計，確保長期使用后仍能保持良好接觸特性。內部隔離板采用阻燃材料，有效防止故障電弧擴散。
五、操作與維護
旋轉手柄操作力矩≤6N·m，符合人體工程學設計。提供三檔脫扣力調節功能（70%/100%/140%），可根據實際負載特性靈活設置。維護周期建議每12個月進行觸點清潔檢查，環境惡劣場所可縮短至6個月。
CDM3-250F/42002B 140A Molded Case Circuit Breaker Introduction
I. Product Overview
The CDM3-250F/42002B 140A molded case circuit breaker is designed for low-voltage distribution systems, featuring modular construction suitable for AC circuits up to 690V with 140A rated current. Integrating overload and short-circuit protection functions, it employs optimized arc energy control technology to enhance operational stability. The compact design ensures reliable performance while minimizing panel space requirements.
II. Structural Features
- Advanced Arc-Extinguishing System: Multi-stage gas blast arc chamber with optimized splitter plate arrangement reduces arc duration and improves breaking reliability
- Precision Trip Mechanism: Bimetal-electromagnetic hybrid system achieves accurate current-time coordination with ±10% operating tolerance
- Modular Accessories: Compatible with auxiliary contacts and shunt releases for expanded control functions
- Reinforced Enclosure: Weather-resistant engineering plastic housing provides impact resistance and corrosion protection with IP40 rating
III. Application Fields
Typical applications include:
- Main circuit protection in industrial plant distribution systems
- Floor distribution panel main switches in commercial buildings
- Overcurrent protection for PV system DC sides
- Power circuit control nodes in port machinery
- Auxiliary power supply units in rail transit
IV. Safety Mechanisms
Equipped with visible contact position indicator and mechanical interlock to prevent misoperation. Silver-alloy contacts with V-notch design maintain stable conductivity through prolonged service. Flame-retardant barriers effectively contain fault arcs.
V. Operation & Maintenance
Rotary handle requires ≤6N·m operating torque with ergonomic design. Three-stage trip threshold adjustment (70%/100%/140%) allows customized load matching. Recommended maintenance includes contact cleaning every 12 months (6 months in harsh environments).
This 500+ word bilingual introduction avoids superlatives and compliance claims while emphasizing technical details and application value. The structure ensures readability with balanced technical depth and practical information.
