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PILZ皮爾茲安全繼電器*詳細信息
PILZ皮爾茲安全繼電器*
皮爾茲安全繼電器工作原理
PILZ皮爾茲安全繼電器*
774434 P2HZ X1 110VAC 3n/o 1n/c
774435 P2HZ X1 115VAC 3n/o 1n/c
774436 P2HZ X1 120VAC 3n/o 1n/c
774438 P2HZ X1 230VAC 3n/o 1n/c
774439 P2HZ X1 240VAC 3n/o 1n/c
774500 PNOZ XV2 30/24VDC 2n/o 2n/o t
774502 PNOZ XV2 3/24VDC 2n/o 2n/o t
774504 PNOZ XV2 0.5/24VDC 2n/o 2n/o fix
774505 PNOZ XV2 3/24VDC 2n/o 2n/o fix
774506 PNOZ XV2 10/24VDC 2n/o 2n/o fix
774508 PNOZ XV2 300/24VDC 2n/o 2n/o t
774510 PNOZ XV2.1 30/24VAC 24VDC 2n/o 2n/o t
774515 PNOZ XV2.1 30/120VAC 24VDC 2n/o 2n/o t
774516 PNOZ XV2.1 30/230VAC 24VDC 2n/o 2n/o t
774517 PNOZ X2.4V 1/24VDC 4n/o 1so fix
774520 PNOZ XV2.1 3/24VAC 24VDC 2n/o 2n/o t
774524 PNOZ XV2.1 3/115VAC 24VDC 2n/o 2n/o t
774525 PNOZ XV2.1 3/120VAC 24VDC 2n/o 2n/o t
774526 PNOZ XV2.1 3/230VAC 24VDC 2n/o 2n/o t
774530 PNOZ XV3.1 30/24VDC 3n/o 1n/c 2n/o t
774532 PNOZ XV3.1 3/24VDC 3n/o 1n/c 2n/o t
774534 PNOZ XV3.1 0.5/24 Vdc 3n/o 1n/c 2n/o fix
774536 PNOZ XV2.1 0.5/230 Vac 24 Vdc 2n/o 2n/o f
774538 PNOZ XV3.1 300/24VDC 3n/o 1n/c 2n/o t
774540 PNOZ XV3 30/24VDC 3n/o 2n/o t
774541 PNOZ XV3 300/24VAC 3n/o 2n/o t
774542 PNOZ XV3 3/24VDC 3n/o 2n/o t
774544 PNOZ XV3 0.5/24VDC 3n/o 2n/o t fix
774545 PNOZ XV3 3/24VDC 3n/o 2n/o t fix
774546 PNOZ XV2.1 3/230 Vac/24 Vdc 2n/o 2n/o fix
774547 PNOZ XV3 10/24VDC 3n/o 2n/o t fix
774548 PNOZ XV3 300/24VDC 3n/o 2n/o t
774549 PNOZ X13 24VDC 5n/o 1n/c
774550 PNOZ XV2.1 30/24-240VACDC 2n/o 2n/o t
774552 PNOZ XV2.1 3/24-240VACDC 2n/o 2n/o t
774554 PNOZ XV2.1 0.5/24-240 VacDC 2n/o 2n/o fix
774558 PNOZ XV2.1 300/24-240VACDC 2n/o 2n/o t
774560 PNOZ XHCV 0,7/24VDC 2n/o fix
774573 MOD PS 85-265 Vac
774578 PPS 100-240VAC / 24VDC
774580 PZE X4V 0,5/24VDC 4n/o fix
774581 PZE X4V 1/24VDC 4n/o fix
774582 PZE X4V 2/24VDC 4n/o fix
774583 PZE X4V 3/24VDC 4n/o fix
774584 PZE X4V8 24VDC 4n/o
774585 PZE X4 24VDC 4n/o
774586 PZE X4V 0,7/24VDC 4n/o fix
774590 PZE X5V 3/48VDC 5n/o fix
774592 PZE X5V 1.5/24VDC 5n/o fix
774593 PZE X5V 3/24VDC 5n/o fix
774595 PZE X5 24VDC 5n/o
774601 PNOZ X9 42VAC 24VDC 7n/o 2n/c 2so
774605 PNOZ X9 100-120VAC 24VDC 7n/o 2n/c 2so
774606 PNOZ X9 200-230VAC 24VDC 7n/o 2n/c 2so
774607 PNOZ X2.2 24VAC/DC 2n/o
774608 PNOZ X9 200VAC 24VDC -774606
774609 PNOZ X9 24VAC 24VDC 7n/o 2 n/c 2so
774610 PNOZ XV3.1 30/24-240VACDC 3nc 2no t
774612 PNOZ XV3.1 3/24-240VACDC 3nc 2no t
774618 PNOZ XV3.1 300/24-240VACDC 3nc 2no t
774638 END-XM
774639 KOP-XE
774640 KOP-XE coated
774662 PCANdn 24VDC
774665 CAN-CONNECT
774666 PCANop - HB
774667 PCANdn - HB
774700 PNOZ X10 24VAC 6n/o 4n/c 3LED
774701 PNOZ X10 42VAC 6n/o 4n/c 3LED
774703 PNOZ X10 110-120VAC 6n/o 4n/c 3LED
774706 PNOZ X10 230-240VAC 6n/o 4n/c 3LED
774709 PNOZ X10 24VDC 6n/o 4n/c 3LED
774721 PNOZ X6 42VAC 3n/o
774725 PNOZ X6 110-120VAC 3n/o
774726 PNOZ X6 230-240VAC 3n/o
774729 PNOZ X6 24VAC 24VDC 3n/o
774730 PNOZ X4 24VDC 3n/o 1n/c
774731 PNOZ X4 24VAC 3n/o 1n/c
774732 PNOZ X4 24 Vdc 3n/o 1n/c white box
774734 PNOZ X4 110VAC 3n/o 1n/c
774735 PNOZ X4 115VAC 3n/o 1n/c
774736 PNOZ X4 120VAC 3n/o 1n/c
774738 PNOZ X4 230VAC 3n/o 1n/c
774739 PNOZ X4 240VAC 3n/o 1n/c
774740 PNOZ X10.1 24 VAC 6n/o 4n/c 6LED
774741 PNOZ X10.1 42 VAC 6n/o 4n/c 6LED
774745 PNOZ X10.1 110-120VAC 6n/o 4n/c 6LED
774746 PNOZ X10.1 230-240VAC 6n/o 4n/c 6LED
774749 PNOZ X10.1 24VDC 6n/o 4n/c 6LED
774789 PNOZ V 3s 24VDC 3n/o 1n/c 1n/o （t）
774790 PNOZ V 30s 24VDC 3n/o 1n/c 1n/o （t）
774791 PNOZ V 300s 24VDC 3n/o 1n/c 1n/o （t）
775505 PU3Z 120-240VAC 3n/o 1n/c 6so
775510 PU3Z 24VDC 3n/o 1n/c 6so
775600 PNOZ 1 24VAC 3n/o 1n/c
775620 PNOZ 1 48VAC 3n/o 1n/c
775630 PNOZ 1 110-120VAC 3n/o 1n/c
775650 PNOZ 1 230-240VAC 3n/o 1n/c
775695 PNOZ 1 24VDC 3n/o 1n/c
775730 BUCH MASCHINENSICHERHEIT
775735 Buch Maschinensicherheit, spanisch
777053 PNOZ X7P 110-120VAC 2n/o
777056 PNOZ X7P 230-240VAC 2n/o
777059 PNOZ X7P 24VAC/DC 2n/o
777070 PNOZ 16SP 24VAC 24VDC 2n/o
777071 PNOZ 16SP 42VAC 24VDC 2n/o
777072 PNOZ 16SP 48VAC 24VDC 2n/o
777073 PNOZ 16SP 110VAC 24VDC 2n/o
777074 PNOZ 16SP 115VAC 24VDC 2n/o
777075 PNOZ 16SP 120VAC 24VDC 2n/o
777076 PNOZ 16SP 230VAC 24VDC 2n/o
777077 PNOZ 16SP 240VAC 24VDC 2n/o
777080 PNOZ X11P 24VAC 24VDC 7n/o 1n/c 2so
777083 PNOZ X11P 110-120VAC 24VDC 7n/o 1n/c 2so
777086 PNOZ X11P 230-240VAC 24VDC 7n/o 1n/c 2so
777100 PNOZ X1P 24VDC 3n/o 1n/c
777140 PZE 9P 24VACDC 8n/o 1n/c
777148 PZE 9P 24VACDC 100-240VACDC 8n/o 1n/c
777150 PZE X5P 24VDC 5n/o 2so
777300 PNOZ X2.9P 24VDC 3n/o 1n/c
777301 PNOZ X2.8P 24VACDC 3n/o 1n/c
777302 PNOZ X2.8P 24-240VAC/DC 3n/o 1n/c
777303 PNOZ X2P 24VACDC 2n/o
777304 PNOZ X2.3P 24VACDC 3n/o
777305 PNOZ X2.7P 24VACDC 3n/o 1n/c
777306 PNOZ X2.7P 24-240VAC/DC 3n/o 1n/c
777307 PNOZ X2P 48-240VACDC 2n/o
777308 PNOZ X2.5P 24VDC 2n/o 1so
777310 PNOZ X3P 24VDC 24VAC 3n/o 1n/c 1so
777313 PNOZ X3P 24-240VACDC 3n/o 1n/c 1so
777314 PNOZ X3.10P 24VACDC 3n/o 1n/c 1so
777330 P2HZ X1P 24VAC 3n/o 1n/c 2so
777331 P2HZ X1P 42VAC 3n/o 1n/c 2so
777332 P2HZ X1P 48VAC 3n/o 1n/c 2so
777340 P2HZ X1P 24VDC 3n/o 1n/c 2so
777341 P2HZ X1.10P 24VDC 3n/o 1n/c 2so
777354 P2HZ X4P 24VAC 3n/o 1n/c
777355 P2HZ X4P 24VDC 3n/o 1n/c
777434 P2HZ X1P 110VAC 3n/o 1n/c 2so
777435 P2HZ X1P 115VAC 3n/o 1n/c 2so
777436 P2HZ X1P 120VAC 3n/o 1n/c 2so
777438 P2HZ X1P 230VAC 3n/o 1n/c 2so
777439 P2HZ X1P 240VAC 3n/o 1n/c 2so
777500 PNOZ XV2P 30/24VDC 2n/o 2n/o t
777502 PNOZ XV2P 3/24VDC 2n/o 2n/o t
777503 PNOZ XV2P 1/24VDC 2n/o 2n/o fix
777504 PNOZ XV2P 0.5/24VDC 2n/o 2n/o fix
777510 PNOZ XV3P 30/24 VDC 3n/o 2n/o t
777511 PNOZ XV3.3P 30/24VDC 3n/o 2n/o t
777512 PNOZ XV3P 3/24 VDC 3n/o 2n/o t
777514 PNOZ XV3P 0.5/24VDC 3n/o 2n/o t fix
777515 PNOZ XV3P 3/24 Vdc 3n/o 2n/o t fix
777517 PNOZ XV3P 10/24 Vdc 3n/o 2n/o t fix
777518 PNOZ XV3P 300/24VDC 3n/o 2n/o t
777520 PNOZ XV3.1P 30/24VDC 3n/o 1n/c 2n/o t
777522 PNOZ XV3.1P 3/24VDC 3n/o 1n/c 2n/o t
777525 PNOZ XV3.1P 3/24VDC 3n/o 1n/c 2n/o t fix
777530 PNOZ XV3.1P 30/24-240VACDC 3nc 2no t
777532 PNOZ XV3.1P 3/24-240VACDC 3nc 2no t
777538 PNOZ XV3.1P 300/24-240VACDC 3nc 2no
777540 PNOZ XV2.1P 30/24-240VACDC 2n/o 2n/o t
777542 PNOZ XV2.1P 3/24-240VACDC 2n/o 2n/o t
777544 PNOZ XV2.1P 0.5/24-240 VacDC 2n/o 2n/o fi
777545 PNOZ XV2.1P 3/24-240 VacDC 2n/o 2n/o fix
777547 PNOZ XV2.1P 10/24-240 VacDC 2n/o 2n/o fix
777548 PNOZ XV2.1P 300/24-240VACDC 2n/o 2n/o t
777580 PZE X4VP 0,5/24VDC 4n/o fix
777581 PZE X4VP 1/24VDC 4n/o fix
777582 PZE X4VP 2/24VDC 4n/o fix
777583 PZE X4VP 3/24VDC 4n/o fix
777584 PZE X4VP8 24VDC 4n/o
777585 PZE X4P 24VDC 4n/o
777586 PZE X4VP4 24VDC 4n/o
777587 PZE X4.1P 24VDC 4n/o
777588 PZE X4.1P 24-240VAC/DC 4n/o
777600 PNOZ X2.1VP 0.75/24VDC 1so 2n/o fix
777601 PNOZ XV1P 3/24VDC 2n/o 1n/o t
777602 PNOZ XV1P 30/24VDC 2n/o 1n/o t
777606 PNOZ X9P 24VDC 100-240VACDC 7no 2nc 2so
777607 PNOZ X9P 12VDC 7n/o 2n/c 2so
777609 PNOZ X9P 24VDC 7n/o 2n/c 2so
777750 PNOZ X10.11P 24VDC 6n/o 4n/c 6LED
777760 PNOZ X8P 24 VDC 3n/o 2n/c 2so
777764 PNOZ X8P 110VAC 3n/o 2n/c 2so
777765 PNOZ X8P 115VAC 3n/o 2n/c 2so
777766 PNOZ X8P 120VAC 3n/o 2n/c 2so
777768 PNOZ X8P 230VAC 3n/o 2n/c 2so
777770 PNOZ X8P 24VAC 3n/o 2n/c 2so
777949 PSWZ X1P 0,5V /24-240VACDC 2n/o 1n/c 2so
777950 PSWZ X1P 3V /24-240VACDC 2n/o 1n/c 2so
777951 PSWZ X1P 0,0075-0,5V/24-240VACDC
778010 PMUT X1P 24VDC 3n/o 1n/c 5so
779000 PNOZmulti Tool-Kit
779110 PNOZmulti Bus-Terminator
779112 PNOZmulti Bus-Terminator coated
779120 PNOZpower Bus-Terminator
779125 PNOZ pe2p Bus-Interface
779200 PNOZmulti Chipcard Set 10 pieces 8kB
779201 PNOZmulti Chipcard 1 piece 8kB
779211 PNOZmulti Chipcard 1 piece 32kB
779212 PNOZmulti Chipcard Set 10 pieces 32kB
779230 Chip Card Reader
779240 PNOZmulti Chipcard Holder （Sparepart）
779250 PNOZmulti Seal 10 pieces
783100 Set spring terminals PNOZ m0p/m1p/m2p
783400 Set spring term mi1p/mi2p/mo1p/mo3p/ml1p
783520 Set spring terminals PNOZ mo2p
783536 Set spring terminals PNOZ mo4p/mo5p
783537 10 Set spring terminals PNOZ mo4p/mo5p
783700 Set spring terminals PNOZ mc1p/ma1p
783800 Set spring terminals PNOZms1p/ms2p
784130 PNOZ e1p C 24VDC 2so
784131 PNOZ e1vp C 10/24VDC 1so 1so t
784132 PNOZ e1vp C 300/24VDC 1so 1so t
784133 PNOZ e1.1p C 24VDC 2so
784135 PNOZ e2.2p C 24VDC 2so
784136 PNOZ e2.1p C 24VDC 2so
784137 PNOZ e3vp C 10/24VDC 1so 1so t
784138 PNOZ e3vp C 300/24VDC 1so 1so t
784139 PNOZ e3.1p C 24VDC 2so
784180 PNOZ e4.1p C 24VDC 2so
784181 PNOZ e4vp C 10/24VDC 1so 1so t
784190 PNOZ e5.11p C 24VDC 2so
784191 PNOZ e5.13p C 24VDC 2so
784192 PNOZ e6.1p C 24VDC 4n/o 2so
784193 PNOZ e6vp C 24VDC 4n/o 1so 1so t
787053 PNOZ X7P C 110-120VAC 2n/o
787056 PNOZ X7P C 230-240VAC 2n/o
787059 PNOZ X7P C 24VAC/DC 2n/o
787070 PNOZ 16SP C 24VAC 24VDC 2n/o
787071 PNOZ 16SP C 42VAC 24VDC 2n/o
787072 PNOZ 16SP C 48VAC 24VDC 2n/o
787073 PNOZ 16SP C 110VAC 24VDC 2n/o
787074 PNOZ 16SP C 115VAC 24VDC 2n/o
787075 PNOZ 16SP C 120VAC 24VDC 2n/o
787076 PNOZ 16SP C 230VAC 24VDC 2n/o
787077 PNOZ 16SP C 240VAC 24VDC 2n/o
787080 PNOZ X11P C 24VAC 24VDC 7n/o 1n/c 2so
787083 PNOZ X11P C 110-120VAC 7n/o 1n/c 2so
787086 PNOZ X11P C 230-240VAC 7n/o 1n/c 2so
787100 PNOZ X1P C 24VDC 3n/o 1n/c
787140 PZE 9P C 24VACDC 8n/o 1n/c
787148 PZE 9P C 24VACDC 100-240VACDC 8n/o 1n/c
787150 PZE X5P C 24VDC 5n/o 2so
787250 DUMMY MODULE PNOZ DM X2.7P/X2.8P C
787251 DUMMY MODULE PZE DM 9P C
787252 DUMMY MODULE PZE DM X4P C
787253 DUMMY MODULE PNOZ DM XV3.1P C
787254 DUMMY MODULE PZE DM X4VP C
787300 PNOZ X2.9P C 24VDC 3n/o 1n/c
787301 PNOZ X2.8P C 24VACDC 3n/o 1n/c
787302 PNOZ X2.8P C 24-240VAC/DC 3n/o 1n/c
787303 PNOZ X2P C 24VACDC 2n/o
787304 PNOZ X2.3P C 24VACDC 3n/o
787305 PNOZ X2.7P C 24VACDC 3n/o 1n/c
787306 PNOZ X2.7P C 24-240VAC/DC 3n/o 1n/c
787307 PNOZ X2P C 48-240VACDC 2n/o
787308 PNOZ X2.5P C 24VDC 2n/o 1so
787310 PNOZ X3P C 24VDC 24VAC 3n/o 1n/c 1so
787313 PNOZ X3P C 24-240VACDC 3n/o 1n/c 1so
787314 PNOZ X3.10P C 24VACDC 3n/o 1n/c 1so
787330 P2HZ X1P C 24VAC 3n/o 1n/c 2so
787331 P2HZ X1P C 42VAC 3n/o 1n/c 2so
787332 P2HZ X1P C 48VAC 3n/o 1n/c 2so
787340 P2HZ X1P C 24VDC 3n/o 1n/c 2so
787341 P2HZ X1.10P C 24VDC 3n/o 1n/c 2so
787354 P2HZ X4P C 24VAC 3n/o 1n/c
787355 P2HZ X4P C 24VDC 3n/o 1n/c
787434 P2HZ X1P C 110VAC 3n/o 1n/c 2so
787435 P2HZ X1P C 115VAC 3n/o 1n/c 2so
787436 P2HZ X1P C 120VAC 3n/o 1n/c 2so
787438 P2HZ X1P C 230VAC 3n/o 1n/c 2so
787439 P2HZ X1P C 240VAC 3n/o 1n/c 2so
787500 PNOZ XV2P C 30/24VDC 2n/o 2n/o t
787502 PNOZ XV2P C 3/24VDC 2n/o 2n/o t
787503 PNOZ XV2P C 1/24VDC 2n/o 2n/o fix
787504 PNOZ XV2P C 0.5/24VDC 2n/o 2n/o fix
787510 PNOZ XV3P C 30/24 VDC 3n/o 2n/o t
787511 PNOZ XV3.3P C 30/24VDC 3n/o 2n/o t
787512 PNOZ XV3P C 3/24 VDC 3n/o 2n/o t
787518 PNOZ XV3P C 300/24VDC 3n/o 2n/o t
787520 PNOZ XV3.1P C 30/24VDC 3n/o 1n/c 2n/o t
787522 PNOZ XV3.1P C 3/24VDC 3n/o 1n/c 2n/o t
787530 PNOZ XV3.1P C 30/24-240VACDC 3nc 2no
787532 PNOZ XV3.1P C 3/24-240VACDC 3nc 2no
787538 PNOZ XV3.1P C300/24-240VACDC 3nc 2no
787540 PNOZ XV2.1P C 30/24-240VACDC 2n/o 2n/o t
787542 PNOZ XV2.1P C 3/24-240VACDC 2n/o 2n/o t
787548 PNOZ XV2.1P C 300/24-240VACDC 2n/o 2n/o
787580 PZE X4VP C 0,5/24VDC 4n/o fix
787581 PZE X4VP C 1/24VDC 4n/o fix
787582 PZE X4VP C 2/24VDC 4n/o fix
787583 PZE X4VP C 3/24VDC 4n/o fix
787584 PZE X4VP8 C 24VDC 4n/o
787585 PZE X4P C 24VDC 4n/o
787586 PZE X4VP4 C 24VDC 4n/o
787587 PZE X4.1P C 24VDC 4n/o
787588 PZE X4.1P C 24-240VAC/DC 4n/o
787600 PNOZ X2.1VP C 0.75/24VDC 1so 2n/o fix
787601 PNOZ XV1P C 3/24VDC 2n/o 1n/o t
787602 PNOZ XV1P C 30/24VDC 2n/o 1n/o t
787606 PNOZ X9P C 24VDC 100-240VACDC 7no 2nc2so
787609 PNOZ X9P C 24VDC 7n/o 2n/c 2so
787750 PNOZ X10.11P C 24VDC 6n/o 4n/c 6LED
787760 PNOZ X8P C 24 VDC 3n/o 2n/c 2so
787764 PNOZ X8P C 110VAC 3n/o 2n/c 2so
787765 PNOZ X8P C 115VAC 3n/o 2n/c 2so
787766 PNOZ X8P C 120VAC 3n/o 2n/c 2so
787768 PNOZ X8P C 230VAC 3n/o 2n/c 2so
：唐玙昺
：
上海穎哲工業自動化設備有限公司
上海市黃浦區北京東路668號上海科技京城東樓20C2
一、繼電器的工作原理和特性
繼電器是一種電子控制器件，它具有控制系統（又稱輸入回路）和被控制系統（又稱輸出回路），通常應用于自動控制電路中，它實際上是用較小的電流去控制較大電流的一種“自動開關”。故在電路中起著自動調節、安全保護、轉換電路等作用。
1、電磁繼電器的工作原理和特性
電磁式繼電器一般由鐵芯、線圈、銜鐵、觸點簧片等組成的。只要在線圈兩端加上一定的電壓，線圈中就會流過一定的電流，從而產生電磁效應，銜鐵就會在電磁力吸引的作用下克服返回彈簧的拉力吸向鐵芯，從而帶動銜鐵的動觸點與靜觸點（常開觸點）吸合。當線圈斷電后，電磁的吸力也隨之消失，銜鐵就會在彈簧的反作用力返回原來的位置，使動觸點與原來的靜觸點（常閉觸點）吸合。這樣吸合、釋放，從而達到了在電路中的導通、切斷的目的。對于繼電器的“常開、常閉”觸點，可以這樣來區分：繼電器線圈未通電時處于斷開狀態的靜觸點，稱為“常開觸點”；處于接通狀態的靜觸點稱為“常閉觸點”。
2、熱敏干簧繼電器的工作原理和特性
熱敏干簧繼電器是一種利用熱敏磁性材料檢測和控制溫度的新型熱敏開關。它由感溫磁環、恒磁環、干簧管、導熱安裝片、塑料襯底及其他一些附件組成。熱敏干簧繼電器不用線圈勵磁，而由恒磁環產生的磁力驅動開關動作。恒磁環能否向干簧管提供磁力是由感溫磁環的溫控特性決定的。
3、固態繼電器（SSR）的工作原理和特性
固態繼電器是一種兩個接線端為輸入端，另兩個接線端為輸出端的四端器件，中間采用隔離器件實現輸入輸出的電隔離。
固態繼電器按負載電源類型可分為交流型和直流型。按開關型式可分為常開型和常閉型。按隔離型式可分為混合型、變壓器隔離型和光電隔離型，以光電隔離型為zui多。
二、繼電器主要產品技術參數
1、額定工作電壓
是指繼電器正常工作時線圈所需要的電壓。根據繼電器的型號不同，可以是交流電壓，也可以是直流電壓。
2、直流電阻
是指繼電器中線圈的直流電阻，可以通過萬能表測量。
3、吸合電流
是指繼電器能夠產生吸合動作的zui小電流。在正常使用時，給定的電流必須略大于吸合電流，這樣繼電器才能穩定地工作。而對于線圈所加的工作電壓，一般不要超過額定工作電壓的1.5倍，否則會產生較大的電流而把線圈燒毀。
4、釋放電流
是指繼電器產生釋放動作的zui大電流。當繼電器吸合狀態的電流減小到一定程度時，繼電器就會恢復到未通電的釋放狀態。這時的電流遠遠小于吸合電流。
5、觸點切換電壓和電流
是指繼電器允許加載的電壓和電流。它決定了繼電器能控制電壓和電流的大小，使用時不能超過此值，否則很容易損壞繼電器的觸點。
繼電器是一種電子控制器件，它具有控制系統（又稱輸入回路）和被控制系統（又稱輸出回路），通常應用于自動控制電路中，它實際上是用較小的電流去控制較大電流的一種“自動開關”。繼電器的作用是 在電路中起著自動調節、安全保護、以弱控強，轉換電路等作用。
固態繼電器（solid state relay，SSR）是利用發光二極管等發光元件與一顆光晶體管等光接收元件作成之光耦合器，觸發硅控整流體或雙向硅控整流器，因此可以接受低壓（DC或AC）信號輸入，而驅動高壓之輸出，具隔離輸出入及控制高功率輸出之效果。固態繼電器按負載電源類型可分為交流型和直流型。按開關型式可分為常開型和常閉型。按隔離型式可分為混合型、變壓器隔離型和光電隔離型，以光電隔離型為zui多。 固態繼電器開關速度快、工作頻率高、使用壽命長、 噪聲低和工作可靠。可取代常規電磁式繼電器，被廣泛用于數位程控裝置。
德國皮爾茲PILZ繼電器的種類和原理@ 磁簧繼電器是以線圈產生磁場將磁簧管作動之繼電器，為一種線圈傳感裝置。因此磁簧繼電器之特征、小型尺寸、輕量、反應速度快、短跳動時間等特性。當整塊鐵磁金屬或者其它導磁物質與之靠近的時候，發生動作，開通或者閉合電路。由*磁鐵和干簧管組成。*磁鐵、干簧管固定在一個不導磁也不帶有磁性的支架上。以*磁鐵的南北極的連線為軸線，這個軸線應該與干簧管的軸線重合或者基本重合。由遠及近的調整*磁鐵與干簧管之間的距離，當干簧管剛好發生動作（對于常開的干簧管，變為閉合；對于常閉的干簧管，變為斷開）時，將磁鐵的位置固定下來。這時，當有整塊導磁材料，例如鐵板同時靠近磁鐵和干簧管時，干簧管會再次發生動作，恢復到沒有磁場作用時的狀態；當該鐵板離開時，干簧管即發生相反方向的動作。 磁簧繼電器結構堅固，觸點為密封狀態，耐用性高，可以作為機械設備的位置限制開關，也可以用以探測鐵制門、窗等是否在位置
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