SHR-200/3，SHR-200/3R，SHR-200/4，SHR-200/4R 負(fù)荷鐵殼開關(guān) 

1.SHR系列熔斷器式開關(guān)，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(fā)熱電流至400安培的電路中，作為手動(dòng)不頻繁地接通與分?jǐn)嘭?fù)載電路和線路的過載與短路保護(hù)之用。由于裝有中性接線柱，熔斷器式開關(guān)也可作為一般照明等回路的控制開關(guān)之用。 高短路電流的配電回路和電動(dòng)機(jī)回路作為電源隔離開關(guān)、負(fù)荷開關(guān)和應(yīng)急開關(guān)、供電路通斷及保護(hù)之用。
2.SHR負(fù)荷開關(guān)箱適用于下列工作條件：
1）海拔不高于2000米
2）周圍環(huán)境溫度不高于+40攝氏度不低于-5攝氏度
3）空氣相對(duì)濕度不大于90%（+25℃）
4）垂直安裝于無強(qiáng)烈振動(dòng)和沖擊的場合
5）在無爆炸氣體和腐蝕氣體的場合
2.SHR負(fù)荷開關(guān)箱分類和型式
1）按約定發(fā)熱電流分有100,200,315,400安培四個(gè)等級(jí)
2）按結(jié)構(gòu)型式分有開啟式和封閉式兩種
3）按極數(shù)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(fù)荷開關(guān)箱結(jié)構(gòu)特征
熔斷器式開關(guān)主要由觸頭滅弧系統(tǒng)，熔斷器，操作機(jī)構(gòu)和外殼四個(gè)部分組成。滅弧室由耐弧塑料壓制，機(jī)構(gòu)簡單，便于拆裝。觸頭系統(tǒng)采用雙斷點(diǎn)直動(dòng)式長形觸頭型式，動(dòng)觸點(diǎn)是以有填料封閉管式熔斷器為橋臂的雙斷點(diǎn)U型觸頭，長形觸頭有較高的電動(dòng)穩(wěn)定性，雙斷點(diǎn)有較高的分?jǐn)嗄芰?。有填料封閉管式熔斷器的極限分?jǐn)嗄芰_(dá)50千安，可以滿足一般電網(wǎng)的要求。操作機(jī)構(gòu)采用單桿抽拉式結(jié)構(gòu)和彈簧儲(chǔ)能原理。用同一彈簧執(zhí)行開關(guān)接通分?jǐn)嗟臋C(jī)能，保證開關(guān)能可靠的接通和分?jǐn)?，并有明顯的通斷標(biāo)志。抽拉式操作手柄，在開關(guān)接通或分?jǐn)嘁院?，可以推入開關(guān)外殼內(nèi)，外形美觀，開關(guān)蓋殼裝有連鎖裝置，保證在蓋子打開后開關(guān)不能接通及開關(guān)接通后蓋子不能打開。

SHR-200/3，SHR-200/3R，SHR-200/4，SHR-200/4R 負(fù)荷鐵殼開關(guān)

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