domestic and industrial automation
Single phase controller SZR-277
Single phase controller SZR-277
SZR-277, 5902431672465
Product description
The SZR-277 single-phase controller of backup switching is used to control the voltage of the single-phase power supply network and to switch the receiving line to the power supply from the generator in case of incorrect parameters of the main power supply line.If the mains voltage is within the specified range, the contact between terminals 2-7 is closed and the mains power is transferred to the receiving line. If the permissible voltage
parameters are exceeded, the contact 2-7 is opened and the supply line is disconnected from reception. When the main line is disconnected, the generator starts up and then, by closing the 3-9 contact, the power supply from the generator is transferred to the receiving line.If the power supply on the main line is restored and is within the specified range for 10 seconds, the contact 3-9 will be opened and the generator will be disconnected.
| Power supply voltage | 85÷265 V AC |
| Supply voltage - generator | 230 V AC |
| Supply voltage - battery | 10÷12 V DC |
| Maximum voltage | 400 V AC |
| Maximum switching current of the internal contacts AC-1 | 16 A/250 V |
| Maximum switching current of the internal contacts AC-15 | 3 A/250 V |
| Turn off time | 1÷15 s |
| Off time upper | 0,3 s |
| Line switching time | 0,3 s |
| Time to qualify the line as good | 10 s |
| Generator starting time | 5÷120 s |
| Contact configuration | 3 × NO |
| Lower voltage threshold | 150÷210 V AC |
| Upper voltage threshold | 270 V AC |
| Hysteresis | 5 V |
| Terminal | pluggable terminal blocks 2,5 mm² |
| Tightening torque | 0,4 Nm |
| Power consumption | 1,5 W |
| Working temperature | -25 ÷ 50 °C |
| Dimensions | 3 modules (52,5 mm) |
| Assembly | on rail 35 mm |
| Ingress Protection Marking | IP20 |
SZR-277 manual (159.15k)
SZR-277 outline CAD dxf (429.8k)
AVR SZR declaration CE 2023 (205.46k)
