| Phase failure relay with control of contactor contacts W 303 s | |||
 |
|
Category: Phase failure relays (sensors) Housing to mount on TH35 rail (3 modules) Download instruction W 303 s  |
|
|
Net price: 84,00 zł |
|||
 |
 |
||
Phase failure and sequence relay protects three-phase motors from damage caused by the work at half power. The device switches off the power supply circuit coil that controls motor in case of asymmetry in different phases, in particular voltage decay in at least one of the phases, and incorrect phase sequence. W 303 s also controls voltage for the contactor and shuts off the engine in case of breakdown contactor contacts. |
|||
| Operation mode: | continuous (C) |
| Noise level: | normal (N) |
| Phase sequence control: | No |
| Control of contactor contacts: | Yes |
| Power supply from terminals: | L1, N |
| Lower switch off voltage: | adjustable 150V ÷ 190V |
| Switch off time: | ca. 3s |
| Return time: | ca. 3s |
| Hysteresis: | ca. 5V |
| Contact type: | SPDT - change-over |
| Contact rated current: | 8A |
| Rated voltage of the contact: | max. 400V AC |
| Protection class: | IP 20 |
| Housing dimentions: | type S3, 89x54x60 mm (3 modules) |
| Weight: | 130g |
| Connections: | screw terminals (up to 4mm2) |
| Manner of mounting: | on TH35 rail |
| Rated supply voltage/frequency: | |
| W 303 s | 3N AC 400/230V, 50Hz |
