TH-N系列熱繼電器熱繼電器主要用于交流頻率50Hz和60Hz，額定電壓至690V，額定電流至800A的電力系統(tǒng)中，作為三相交流電動機的過載保護和斷相保護。延遲型（帶飽和電抗器）特別適用于起動時間長的電動機負載。熱過載繼電器與上級保護的塑殼斷路器可以輕松實現(xiàn)協(xié)調保護。產品型號電流等級標準（2熱動元件）3熱動元件延遲型（帶飽和電抗器）過載保護過載、斷相保護過載保護過載、斷相保護起動器用單獨安裝起動器用單獨安裝起動器用單獨安裝起動器用單獨安裝N12TH-N12注1TH-N12KP注1TH-N12SR注1－－N18TH-N18－TH-N18KP－－－－－N20TH-N20TH-N20KPTH-N20SRTH-N20KPSRN20TATH-N20TA－TH-N20TAKP－TH-N20TASR－TH-N20TAKPSR－N60TH-N60TH-N60KPTH-N60SRTH-N60KPSRN60TATH-N60TA－TH-N60TAKP－TH-N60TASR－TH-N60TAKPSR－N120TH-N120TH-N120KPTH-N120SRTH-N120KPSRN120TATH-N120TATH-N120TAHZTH-N120TAKPTH-N120TAHZKPTH-N120TASR－TH-N120TAKPSR－N220TH-N220RHTH-N220HZTH-N220RHKPTH-N220HZKPTH-N220RHSRTH-N220HZSRTH-N220RHKPSRTH-N220HZKPSRN400TH-N400RHTH-N400HZTH-N400RHKPTH-N400HZKPTH-N400RHSRTH-N400HZSRTH-N400RHKPSRTH-N400HZKPSRN600TH-N600TH-N600KPTH-N600SRTH-N600KPSR工作條件1.環(huán)境溫度：標準為20℃,-10~+40℃(無凝露、無結冰)2.海拔高度：不超過2000m；3.相對濕度：45%~85%RH；4.大氣情況：應無會引起爆炸危險的介質，也無會腐蝕金屬和破壞絕緣的有害氣體和導電塵埃；5.沖擊：10~55Hz19.6m/s2以下；6.振動：49.0m/s2以下；7.保管溫度:-30~+65℃。