| Horizontal Symbol | Vertical Symbol | Description |
 HCR1F35 |
 VCR1F35 |
Minimum Voltage Protection |
 HCR1F36 |
 VCR1F36 |
Maximum Voltage Protection |
 HCR1F38 |
 VCR1F38 |
Residual Voltage Protection |
 HCR1F31 |
 VCR1F31 |
Ground Failure Voltage Protection |
 HCR1F39 |
 VCR1F39 |
Lack of Voltage Protection |