F5空气延时头
F5-T 通电延时时间（s）
F5-D 断电延时时间（s）
符合标准：IEC60947-4-1，GB14048.4。
F4辅助开关主要匹配交流接触器有：
CJX2-0910 CJX2-0901 CJX2-1210 CJX2-1201 CJX2-1810 CJX2-1801 CJX2-2510 CJX2-2501 CJX2-3210 CJX2-3201 CJX2-4011 CJX2-5011 CJX2-6511 CJX2-8011 CJX2-9511 CJX2-4004 CJX2-4008 CJX2-5004 CJX2-5008
CJX2-6504 CJX2-6508 CJX2-8004 CJX2-8008 CJX2-9504 CJX2-9508
CJX2-0910N CJX2-0901N CJX2-1210N CJX2-1201N CJX2-1810N CJX2-1801N CJX2-2510N CJX2-2501N CJX2-3210N CJX2-3201N CJX2-4011N CJX2-5011N CJX2-6511N
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