指用低壓保護繼電器并連在電源兩端，當低電壓時會自動脫扣從而分開斷路器開關。
A74-1020
A74-105
A74-11100
A74-11500
DFB01CM24
DFC01DB23
DFC01DB48
DIA01CB235A
DIA01CD485A
DIA53S724100A
DIA53S724100AF
DIA53S724100AFC
DIA53S72420A
DIA53S72420AB004C
DIA53S72420AF
DIA53S72420AFB001C
DIA53S72450A
DIA53S72450AB005C
DIA53S72450AF
DIA53S72450AFB002C
DIB01CB2310A
DIB01CB23500MA
DIB01CB2350MA
DIB01CB235A
DIB01CB235MA
DIB01CD4810A
DIB01CD48500MA
DIB01CD4850MA
DIB01CD485A
DIB01CD485MA
DIB01CM24100A
DIB02CB23150MV
DIB02CD48150MV
DIB71CB23500MA
DIB71CB2350MA
DIB71CB235A
DIB71CB235MA
DIB71CB48500MA
DIB71CB4850MA
DIB71CB485A
DIB71CB485MA
DIC01DB23AV0
DIC01DD48AV0
DLA71DB232P
DLA71DB482P
DLA71TB233P
DLA71TB483P
DLA73TB232P
DLA73TB482P
DPA01CM44
DPA01CM60
DPA01CM69
DPA01DM23
DPA01DM48
DPA02CM23
DPA02CM40
DPA03CM23
DPA03CM48
DPA03CM69
DPA51CM44
DPA51CM44B001C
DPA51CM44B003C
DPA51CM44B011C
DPA51CM44B014C
DPA51CM44B017
DPA53CM23
DPA53CM23C
DPA53CM48
DPA53CM48B006C
DPA55CM44
DPA71DM23
DPA71DM48
DPB01CM23
DPB01CM23N
DPB01CM48C009C
DPB01CM48N
DPB01CM48NW4
DPB01CM48W4
DPB02CM23
DPB51CM44
DPB51CM44B002C
DPB51CM44B005
DPB51CM44B017
DPB71CM23
DPB71CM48
DPB71CM48B001C
DPB71CM48B014C
DPC01DM11400HZ
DPC01DM23400HZ
DPC01DM48
DPC01DM48400HZ
DPC01DM49400HZ
DPC01DM69
DPC01DM69400HZ
DPC02DM23
DPC02DM48
DPC02DM49
DPC02DM69
DPC71DM23
DPC71DM48
DS0600F
DS1000F
DS1200F
DTA01C115
DTA01C230
DTA01C230C
DTA01C724C
DTA01CD48
DTA02C115
DTA02C230
DTA02CD48
DUA01CB23500V
DUA01CD48500V
DUA52C724
DUA52C724B002C
DUA52C748
DUA52C748C
DUA55CM44
DUB01CB2310V
DUB01CB23500V
DUB01CD4810V
DUB01CD48500V
DUB02CT23
DUB03CW24
DUB71CB2310V
DUB71CB23500V
DUB71CB4810V
DUB71CB48500V
DUC01DB23500V
DUC01DD48500V
DWA01CM235A
DWA01CM485A
DWB01CM2310A
DWB01CM4810A
DWB01CM6910A
DWB02CM2310A
DWB02CM4810A
DWB02CM6910A
DWB03CM2310A
DWB03CM4810A
DWB03CM6910A
E83-2050
H475156115
H475156230
H475156400
PFB01CM24
PIA01CD485A
PIB01CB23500MA
PIB01CD4810A
PIB01CD48500MA
PIB01CD4850MA
PIB01CD485A
PIB01CD485MA
PIB02CD48150MV
PIC01CB23AV0
PIC01CD48AV0
PPA01DM23
PPA01DM48
PPA02CM23
PPA02CM40
PPA03CM23
PPA03CM48
PPB01CM23N
PPB01CM48N
PPB01CM48NW4
PPB01CM48W4
PPC01DM48
PPC71DM23
PPC71DM48
PTA01C115
PTA01C230
PTA01CD48
PTA02C115
PTA02C230
PTA02CD48
PUA01CB23500V
PUA01CD48500V
PUB01CB2310V
PUB01CB23500V
PUB01CD4810V
PUB01CD48500V
PUB02CT23
PUB03CW24
PUC01CB23500V
PUC01CD48500V
PWA01CM235A
PWA01CM485A
PWB01CM2310A
PWB01CM4810A
PWB02CM2310A
PWB02CM4810A
PWB03CM2310A
PWB03CM4810A
