注重电气安全时，使用电子监控继电器。监控：

• 电压
• 相序
• 电流
• 绝缘
• 有功功率
• 温度
• 静止
• 故障电压

皮尔兹电气安全继电器/皮尔兹继电器威斯特公司

部分相关型号如下：

773110 PNOZ m0p base unit not expandable
773120 PNOZ m2p base unit press function
773200 PNOZ pps1p 100-240VAC
773300 PNOZ p1p 24VDC 2so
773893 PNOZ mli1p 5m spring
773894 PNOZ mli1p 10m spring
773895 PNOZ mli1p 50m spring
773900 PNOZ pe1p
773950 PNOZ p1vp 30s
774009 PNOZ 10 24VDC 6n/o 4n/c
774012 PNOZ 2VJ 24VDC 3n/o 1n/c 2n/o t
774013 PNOZ 2VQ 24VDC 3n/o 1n/c 2n/o t
774015 PZW 30/110-120VAC 1n/o 2n/c
774017 PZW 30/230VAC 1n/o 2n/c
774019 PZW 30/24VDC 1n/o 2n/c
774030 PZA 30/24VDC 1n/o 2n/c
774040 PZA 30/230VAC 1n/o 2 n/c
774041 PZA 3/24VDC 1n/o 2n/c
774042 PZW 3/24VDC 1n/o 2n/c
774044 PZW 3/110-120VAC 1n/o 2n/c
774048 PZW 3/230VAC 1n/o 2n/c
774049 PNOZ X7 48VAC 2n/o
774060 PNOZ 16 24VAC 24VDC 2n/o
774061 PNOZ 16 42VAC 24VDC 2n/o
774074 PNOZ 16S 115VAC 24VDC 2n/o 2so
774075 PNOZ 16S 120VAC 24VDC 2n/o 2so
774085 PNOZ 11 110-120VAC 24VDC 7n/o 1n/c
774086 PNOZ 11 230-240VAC 24VDC 7n/o 1n/c
774090 SCHUTZKAPPE P-93 (VE 20 St.)
774100 PNOZ EX 230VAC 3n/o 1n/c
774107 PNOZ EX 120VAC 3n/o 1n/c FM/USA
774139 PNOZ e3.1p 24VDC 2so
774144 PZE 9 120 Vac 8n/o 1n/c
774148 PZE 9 230-240VAC 8n/o 1n/c
774150 PZE 9 24VDC 8n/o 1n/c
774180 PNOZ e4.1p 24VDC 2so
774193 PNOZ e6vp 24VDC 4n/o 1so 1so t