| Phase failure relay W 301 nm | |||
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Category: Phase failure relays (sensors) Small housing to on wall mounting Download instruction W 301 nm  |
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Net price: 43,00 zł |
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Phase sequence and failure 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. It does not protect against a symmetric voltage drop. |
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| Operation mode: | continuous (C) |
| Noise level: | normal (N) |
| Phase sequence control: | Yes |
| Control of contactor contacts: | No |
| Power supply from terminals: | L1, N |
| Lower switch off voltage: | 175V |
| Switch off time: | ca. 3s |
| Return time: | ca. 3s |
| Hysteresis: | ca. 5V |
| Contact type: | SPST - normally open |
| Contact rated current: | 8A |
| Rated voltage of the contact: | max. 400V AC |
| Protection class: | IP 20 |
| Housing dimentions: | type NM, 79x50x25 mm |
| Weight: | 60g |
| Connections: | screw terminals |
| Manner of mounting: | on wall, fastened with screws |
| Rated supply voltage/frequency: | |
| W 301 nm | 3N AC 400/230V, 50Hz |
