PILZ安全繼電器，是由數個繼電器與電路組合而成，為的是要能互補彼此的異常缺陷，達到正確且低誤動作的繼電器完整功能，使其失誤和失效值愈低，安全因素則愈高，因此需設計出多種安全繼電器以保護不同等級機械，主要目標在保護暴露於不同等級之危險性的機械操作人員。

PILZ安全繼電器一般由鐵芯、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"。

部分型號:

474652 PNOZ 1-2 230VAC 3n/o1n/c
474696 PNOZ 1-2 24VDC 3n/o 1n/c
474760 PNOZ 8 24VDC 3n/o 1n/c 2so
474768 PNOZ 8 230VAC 3n/o 1n/c 2so
474789 PNOZ V 3/24VDC 3n/o 1n/c 1n/o t fix
474790 PNOZ V 30/24VDC 3n/o 1n/c 1n/o t fix
474791 PNOZ V 300/24VDC 3n/o 1n/c 1n/o fix
474796 PNOZ V 3S 24VDC 3n/o 1n/c 1n/o t fix
474799 PNOZ V 10S 24VDC 3n/o 1n/c 1n/o t fix
474899 PNOZ 6 24VDC
474908 PNOZ 6 230VAC
474910 PZE5 24VDC 4n/o 1n/c
474919 PZE5 230VAC 4n/o 1n/c
474943 PSWZ 230VAC 2n/o 1n/c 1so
474945 PSWZ 24VDC 2n/o 1n/c 1so
475650 PNOZ 1 230VAC 3n/o1n/c
475695 PNOZ 1 24VDC
720300 PST 4 24VDC 6n/o 4n/c
720309 PST 4 230VAC 6n/o 4n/c
774013 PNOZ 2VQ 24VDC 3n/o 1n/c 1n/o t 1n/o t
774017 PZW 30 230VAC 1n/o 2n/c
774019 PZW 30 24VDC 1n/o 2n/c
774026 PZA 300 230VAC 1n/o 2n/c
774029 PZA 300 24VDC 1n/o 2n/c
774030 PZA 30 24VDC 1n/o 2n/c
774040 PZA 30 230VAC 1n/o 2n/c
774042 PZW 3 24VDC 1n/o 2n/c
774048 PZW 3 230VAC 1n/o 2n/c
774056 PNOZ X7 230VAC 2n/o
774059 PNOZ X7 24VDC7AC 2 n/o
774066 PNOZ 16 230VAC724VDC 2n/o
774076 PNOZ 16S 230VAC724VDC 2n/o 1so
774080 PNOZ 11 24VAC/VDC
774086 PNOZ 11 230VAC/24VDC 7n/o 1n/c
774100 PNOZ Ex 230VAC 3n/o1n/c DMT
774148 PZE9 230 VAC 8n/o 1n/c
774150 PZE9 24VDC 8n/o 1n/c
774300 PNOZ X1 24 VAC/24VDC
774303 PNOZ X2 24VACDC 2n/o
774304 PNOZ X2C 24VAC/DC 2n/o
774305 PNOZ X2.1C 24VAC/DC 2n/o
774306 PNOZ X2. 1 24VACDC 2n/o
774310 PNOZ X3 24 VACDC
774318 PNOZ X3 230VAC/24VDC 3n/o 1n/c
774325 PNOZ X5 24VDC 2n/o
774326 PNOZ X5 12VDC 2n/o
774340 P2HZ X1 24VDC 3n/o 1n/c
774350 P2HZ X3 24VDC 2n/o 1n/c
774360 P1HZ X1 24VDC 2n/o
774400 PDZ 24 VDC 2n/o 2n/c
774402 PAD/SI 800/512I/5 VDC
774403 PAD/SI 800/1024I/5 VDC
774404 PAD/SI 800/2048I/5 VDC
774405 PAD/SI 800/4096I/5 VDC
774406 PAD/SI 840/512I/5 VDC
774407 PAD/SI 840/1024I/5 VDC
774408 PAD/SI 840/2048I/5 VDC
774409 PAD/SI 840/4096I/5 VDC
774410 PAD/SI 800/32I/5 VDC
774411 PAD/SI 840/256I/5 VDC
774412 PAD/SI 840/128I/5 VDC
774413 PAD/SI 840/64I/5 VDC
774414 PAD/SI 8400/32I/5 VDC
774415 PAD/SI 840/16I/5 VDC
774438 P2HZ X1 230VAC 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 t fix
774505 PNOZ XV2 3/24VDC 2n/o 2n/o t fix
774506 PNOZ XV2 10/24VDC 2n/o 2n/o t fix
774508 PNOZ XV2 300/24VDC 2n/o 2n/o t
774510 PNOZ XV2.1 30/24VAC/24VDC 2n/o 2n/o t
774516 PNOZ XV2.1 30/230VAC/24VDC 2n/o 2n/o t
774520 PNOZ XV2.1 3/24VAC/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 0.5/24VDC 3n/o 1n/c 2n/o fix
774535 PNOZ XV3.1 3/24VDC 3n/o 1n/c 2n/o t fix
774536 PNOZ XV2.1 0.5/230VAC/24VDC 2n/o 2n/o t fix
774537 PNOZ XV3.1 10/24VDC 3n/o 1n/c 2n/o t fix
774538 PNOZ XV3.1 300/24VDC 3n/o 1n/c 2n/o t
774540 PNOZ XV3 30/24VDC 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 3/230VAC/24VDC 2n/o 2n/o t 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