SHR-200/3，SHR-200/3R，SHR-200/4，SHR-200/4R 負荷鐵殼開關 

1.SHR系列熔斷器式開關，適用于交流50~60Hz，額定絕緣電壓至500V，額定工作電壓415V（包括380V）有，約定發熱電流至400安培的電路中，作為手動不頻繁地接通與分斷負載電路和線路的過載與短路保護之用。由于裝有中性接線柱，熔斷器式開關也可作為一般照明等回路的控制開關之用。 高短路電流的配電回路和電動機回路作為電源隔離開關、負荷開關和應急開關、供電路通斷及保護之用。
2.SHR負荷開關箱適用于下列工作條件：
1）海拔不高于2000米
2）周圍環境溫度不高于+40攝氏度不低于-5攝氏度
3）空氣相對濕度不大于90%（+25℃）
4）垂直安裝于無強烈振動和沖擊的場合
5）在無爆炸氣體和腐蝕氣體的場合
2.SHR負荷開關箱分類和型式
1）按約定發熱電流分有100,200,315,400安培四個等級
2）按結構型式分有開啟式和封閉式兩種
3）按極數分有3極帶中性接線柱和3極不帶中性接線柱，4極三種
3.SHR負荷開關箱結構特征
熔斷器式開關主要由觸頭滅弧系統，熔斷器，操作機構和外殼四個部分組成。滅弧室由耐弧塑料壓制，機構簡單，便于拆裝。觸頭系統采用雙斷點直動式長形觸頭型式，動觸點是以有填料封閉管式熔斷器為橋臂的雙斷點U型觸頭，長形觸頭有較高的電動穩定性，雙斷點有較高的分斷能力。有填料封閉管式熔斷器的極限分斷能力達50千安，可以滿足一般電網的要求。操作機構采用單桿抽拉式結構和彈簧儲能原理。用同一彈簧執行開關接通分斷的機能，保證開關能可靠的接通和分斷，并有明顯的通斷標志。抽拉式操作手柄，在開關接通或分斷以后，可以推入開關外殼內，外形美觀，開關蓋殼裝有連鎖裝置，保證在蓋子打開后開關不能接通及開關接通后蓋子不能打開。

SHR-200/3，SHR-200/3R，SHR-200/4，SHR-200/4R 負荷鐵殼開關

SHR系列鐵殼負荷開關：
SHR-30A/3，SHR-30A/3R，SHR-30A/3Z負荷鐵殼開關
SHR-30A/4，SHR-30A/4R，SHR-30A/4Z負荷鐵殼開關
SHR-32A/3，SHR-32A/3R，SHR-32A/3Z負荷鐵殼開關
SHR-32A/4，SHR-32A/4R，SHR-32A/4Z負荷鐵殼開關
SHR-40A/3，SHR-40A/3R，SHR-40A/3Z負荷鐵殼開關
SHR-40A/4，SHR-40A/4R，SHR-40A/4Z負荷鐵殼開關
SHR-80A/3，SHR-80A/3R，SHR-80A/3Z負荷鐵殼開關
SHR-80A/4，SHR-80A/4R，SHR-80A/4Z負荷鐵殼開關
SHR-100A/3，SHR-100A/3R，SHR-100A/3Z負荷鐵殼開關
SHR-100A/4，SHR-100A/4R，SHR-100A/4Z負荷鐵殼開關
SHR-160A/3，SHR-160A/3R，SHR-160A/3Z負荷鐵殼開關
SHR-160A/4，SHR-160A/4R，SHR-160A/4Z負荷鐵殼開關
SHR-200A/3，SHR-200A/3R，SHR-200A/3Z負荷鐵殼開關
SHR-200A/4，SHR-200A/4R，SHR-200A/4Z負荷鐵殼開關
SHR-250A/3，SHR-250A/3R，SHR-250A/3Z負荷鐵殼開關
SHR-250A/4，SHR-250A/4R，SHR-250A/4Z負荷鐵殼開關
SHR-315A/3，SHR-315A/3R，SHR-315A/3Z負荷鐵殼開關
SHR-315A/4，SHR-315A/4R，SHR-315A/4Z負荷鐵殼開關
SHR-400A/3，SHR-400A/3R，SHR-400A/3Z負荷鐵殼開關
SHR-400A/4，SHR-400A/4R，SHR-400A/4Z負荷鐵殼開關
SHR-630A/3，SHR-630A/3R，SHR-630A/3Z負荷鐵殼開關
SHR-630A/4，SHR-630A/4R，SHR-630A/4Z負荷鐵殼開關
SHR-800A/3，SHR-800A/3R，SHR-800A/3Z負荷鐵殼開關
SHR-800A/4，SHR-800A/4R，SHR-800A/4Z負荷鐵殼開關
SHR-1000A/3，SHR-1000A/3R，SHR-1000A/3Z負荷鐵殼開關
SHR-1000A/4，SHR-1000A/4R，SHR-1000A/4Z負荷鐵殼開關
SHR-1250A/3，SHR-1250A/3R，SHR-1250A/3Z負荷鐵殼開關
SHR-1250A/4，SHR-1250A/4R，SHR-1250A/4Z負荷鐵殼開關
SHR-1600A/3，SHR-1600A/3R，SHR-1600A/3Z負荷鐵殼開關
SHR-1600A/4，SHR-1600A/4R，SHR-1600A/4Z負荷鐵殼開關
SHR-2000A/3，SHR-2000A/3R，SHR-2000A/3Z負荷鐵殼開關
SHR-2000A/4，SHR-2000A/4R，SHR-2000A/4Z負荷鐵殼開關