Part No.型号WB4028LTotal Length 总长度66.5mmGlass Length玻璃长度28 mmGlass Diameter直径4 mmContact Form触点形式1A （SPST-NO）Contact Position触点位置SYMContact Material触点材质RuContact Rating触点负载30WMax. Switching Voltage最大开关电压180VDC / VACMax. Switching Current最大开关电流1AContact Resistance(at initial value)接触电阻 ( 初始值 )150mOhmsPull In Value (AT)启动值10-40Drop Out Value (AT)释放值10Operation Time动作时间2.0 mSec.(Max.)Release Time释放时间1.0 mSec.(Max.)Breakdown Voltage耐高压300VDCContact Capacitance触点电容1.0 pFInsulation Resistance绝缘电阻109OhmsResonant Frequency谐振频率0.7 kHzOperation Temperature工作温度范围-60℃~+100℃High Humidity最高湿度98% (Max.)Operation Frequency最高工作频率5 HzElectrical Life电气寿命105（250V，1A）Test Coil测试线圈5000 335 OhmLeads引线脚Gold-Plated镀银Safety安全认证SGS