力士乐继电器HED 2 OA2X/400K6L24 压力继电器是利用液体的压力来启闭电气触点的液压电气转换元件。当系统压力达到压力继电器的调定值时，发出电信号，使电气元件(如电磁铁、电机、时间继电器、电磁离合器等)动作，使油路卸压、换向，执行元件实现顺序动作，或关闭电动机使系统停止工作，起安全保护作用等。
压力继电器有柱塞式、膜片式、弹簧管式和波纹管式四种结构形式。下面对柱塞式压力继电器(见图)的工作原理作一介绍:
当从继电器下端进油口3进入的液体压力达到调定压力值时，推动柱塞2上移，此位移通过杠杆放大后推动微动开关4动作。改变弹簧1的压缩量，可以调节继电器的动作压力。
HED 2 OA2X/400K6L24 SO14
R900206413
HED 2 OA2X/25K6L220
R900206414
HED 2 OA2X/400K6L220
R900206686
HED 2 OA2X/200U085K6L110
R900212220
HED 2 OA2X/400K6L24
R900215041
HED 2 OA2X/200 SO13
R900218308
HED 2 OA2X/100KL220
R900219962
HED 2 OA2X/400KL110/12
R900219963
HED 2 OA2X/200K6
R900219964
HED 2 OA2X/400K6
R900220325
HED 2 OA2X/200K6L24
R900220606
HED 2 OA2X/200KL48
R900221186
HED 2 OA2X/400L24/12
R900221668
HED 2 OA2X/100KL110
R900222166
HED 2 OA2X/400KL110
R900222506
HED 2 OA2X/100K6L24
R900224460
HED 2 OA2X/200K6L110
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HED 2 OA2X/63K6
R900227649
HED 2 OA2X/25K6L24
R900228081
HED 2 OA2X/200K6L48
R900228237
HED 2 OA2X/25KL48
R900208993
HED 8 OP1X/100K14SV
R900229981
HED 2 OA2X/25K6
R900242686
HED 2 OA2X/100K6L220
R900242688
HED 2 OA2X/63K6L24W21
R900247521
HED 2 OA2X/200KL110/12
R900248139
HED 2 OA2X/63K6L24
R900248142
HED 2 OA2X/200K6L220
R900340260
HED 2 OA2X/400 SO6
R900344085
HED 2 OA2X/25L48
R900359350
HED 2 OA2X/25L110/5
R900371042
HED 2 OA2X/400 SO14
R900379989
HED 2 OA2X/200L48
R900404256
HED 2 OA2X/63/12
R900418418
HED 2 OA2X/63KL12
R900425744
HED 2 OA2X/25/12
R900439939
HED 2 OA2X/200/12
