F&F
| Type of automation module | voltage monitoring relay |
| Trade name | ATS controller |
| Symbol | Manufacturer | Usup | Contacts layout | Controlled parameter range | IP rating | Mounting | Leads | Additional functions | Operating temperature | Controlled parameter |
|---|---|---|---|---|---|---|---|---|---|---|
| [V AC] | [V AC] | [°C] | ||||||||
| SZR-277 | F&F | 85...265 | NO x3 | 150...270 | IP20 | for DIN rail mounting | screw terminals | LED status indicator | -25...50 | - |
| SZR-278 | F&F | - | - | - | - | for DIN rail mounting | screw terminals | - | - | phase asymmetry, phase sequence, overvoltage, too low voltage, phase failure |
| SZR-279 | F&F | - | - | - | - | for DIN rail mounting | screw terminals | - | - | phase asymmetry, phase sequence, overvoltage, too low voltage, phase failure |
