| Model |  | 
| product number | 3LD2064-1GP51 | 
| product brand name | SENTRON | 
| product designation | 3LD Switch disconnector | 
| design of the product | Main switch | 
| display version for switch position indicator manual operation | 1 ON – 0 OFF | 
| type of switch | Molded-plastic enclosure for metric threaded joint | 
| design of the actuating element | Short rotary knob | 
| color of the actuating element | black | 
| design of handle | rotary operating mechanism, black | 
| type of the driving mechanism motor drive | No | 
| General technical data |  | 
| number of poles | 3 | 
| number of poles note | N | 
| size of switch disconnector | 1 | 
| mechanical service life (operating cycles) typical | 100 000 | 
| electrical endurance (operating cycles) | 6 000 | 
| ● at AC-23 A at 690 V | 
| operating frequency maximum | 50 1/h | 
| degree of pollution | 3 | 
| Voltage |  | 
| insulation voltage rated value | 690 V | 
| surge voltage resistance rated value | 6 kV | 
| operating voltage |  | 
| ● at AC rated value | 690 V | 
| operating frequency rated value |  | 
| ● minimum | 50 Hz | 
| ● maximum | 60 Hz | 
| Protection class |  | 
| protection class IP | IP65 | 
| degree of protection NEMA rating | 1, 4X, 12 | 
| protection class IP on the front | IP65 | 
| Dissipation |  | 
| power loss [W] for rated value of the current at AC in hot operating state per pole | 0.5 W | 
| Current |  | 
| operational current rated value | 16 A | 
| operational current |  | 
| ● at 40 °C rated value | 16 A | 
| ● at 45 °C rated value | 16 A | 
| ● at 50 °C rated value | 16 A | 
| ● at 55 °C rated value | 16 A | 
| ● at AC °C rated value | 16 A | 
| Main circuit |  | 
| operational current |  | 
| ● at AC-21 at 690 V rated value | 16 A | 
| ● at AC-21 A at 240 V rated value | 16 A | 
| ● at AC-21 A at 400 V rated value | 16 A | 
| ● at AC-21 A at 440 V rated value | 16 A | 
| ● at AC-23 A at 400 V rated value | 16 A | 
| operating power |  | 
| ● at AC-23 A at 240 V rated value | 4 kW | 
| ● at AC-23 A at 400 V rated value | 8 kW | 
| ● at AC-23 A at 440 V rated value | 7.5 kW | 
| ● at AC-23 A at 690 V rated value | 8 kW | 
| ● at AC-3 at 240 V rated value | 3 kW | 
| ● at AC-3 at 400 V rated value | 6 kW | 
| ● at AC-3 at 690 V rated value | 5.5 kW | 
| Auxiliary circuit |  | 
| number of CO contacts for auxiliary contacts | 0 | 
| number of NC contacts for auxiliary contacts | 1 | 
| number of NO contacts for auxiliary contacts | 1 | 
| operating voltage of auxiliary contacts at AC maximum | 500 V | 
| continuous current of the auxiliary contact rated value | 10A | 
| insulation voltage of the auxiliary switch rated value | 500 V | 
| Suitability |  | 
| suitability for use |  | 
| ● main switch | Yes | 
| ● switch disconnector | Yes | 
| ● EMERGENCY OFF switch | No | 
| ● safety switch | Yes | 
| ● maintenance/repair switch | Yes | 
| Product details |  | 
| product feature can be locked into OFF position | Yes | 
| accessories |  | 
| product extension optional |  | 
| ● motor drive | No | 
| ● voltage trigger | No | 
| number of connectable NC contacts for auxiliary contacts attachable maximum | 2 | 
| number of connectable NO contacts for auxiliary contacts attachable maximum | 3 | 
| number of connectable CO contacts for auxiliary contacts attachable maximum | 0 | 
| number of bracket locks maximum | 3 | 
| hasp thickness of the bracket locks | 4 … 8 mm | 
| Short circuit |  | 
| conditional short-circuit current with line-side fuse protection |  | 
| ● at 690 V by gG fuse rated value | 50 kA | 
| let-through current with closed switch |  | 
| ● at 240 V for combination switch + gG fuse maximum | 3 kA | 
| ● at 440 V for combination switch + gG fuse maximum | 3 kA | 
| ● at 690 V for combination switch + gG fuse maximum permissible | 3 kA | 
| I2t value with closed switch |  | 
| ● at 240 V for combination switch + gG fuse maximum | 2.5 kA2.s | 
| ● at 440 V for combination switch + gG fuse maximum | 2.5 kA2.s | 
| ● at 690 V for combination switch + gG fuse maximum | 3 kA2.s | 
| design of the fuse link |  | 
| ● for short-circuit protection of the main circuit required | fuse gL/gG: 20 A | 
| ● for short-circuit protection of the auxiliary switch required | fuse gL/gG: 10 A | 
| operational current of upstream fuse rated value | 20 A | 
| according UL |  | 
| operational current at AC according to UL 508/UL 609474-1 rated value | 16 A | 
| operating voltage at AC at 50/60 Hz according to UL 508/UL 60947-4-1 rated value | 600 V | 
| active power [hp] at AC at 480 V according to UL 508/UL 60947-4-1 rated value | 7.5 | 
| active power [hp] at AC at 600 V according to UL 508/UL 60947-4-1 rated value | 10 | 
| short-time withstand current (SCCR) at 600 V according to UL 508/UL 60947-4-1 | 5 kA | 
| continuous current of upstream fuse according to UL rated value | 50 A | 
| type of fuse according to UL | RK5 | 
| Connections |  | 
| AWG number as coded connectable conductor cross section solid |  | 
| ● maximum | 10 | 
| ● minimum | 18 | 
| type of connectable conductor cross-sections for copper conductor |  | 
| ● solid | 1x (1…6mm²) | 
| ● finely stranded with core end processing | 1x (1…4mm²) | 
| ● stranded | 1x (1..6mm²) | 
| type of connectable conductor cross-sections for auxiliary contacts |  | 
| ● solid | lateral auxiliary switch 2x (0,75 … 2,5mm²), 1x 4mm²; front auxiliary switch 1x (0,75 … 2,5mm²) | 
| ● finely stranded with core end processing | lateral auxiliary switch 2x (0,75 … 1,5mm²), 1x 2,5mm²; front auxiliary switch 1x 2,5mm² | 
| ● stranded | lateral auxiliary switch 2x (0,75 … 2,5mm²), 1x 4mm²; front auxiliary switch 1x (0,75 … 2,5mm²) | 
| type of electrical connection |  | 
| ● for main current circuit | box terminal | 
| ● for auxiliary contacts | connection terminals | 
| Mechanical Design |  | 
| height | 152 mm | 
| width | 100 mm | 
| depth | 117 mm | 
| type of device | fixed mounting | 
| fastening method | Complete unit in enclosure | 
| fastening method |  | 
| ● 4-hole front mounting | No | 
| ● front mounting with central attachment | Yes | 
| ● rail mounting | No | 
| net weight | 455 g | 
| Environmental conditions |  | 
| ambient temperature during operation | -25 °C | 
| ● minimum | 
| ● maximum | 55 °C | 
| ambient temperature during storage | -25 °C | 
| ● minimum | 
| ● maximum | 55 °C |