Reliable – from experience. sentron Everything. Great. With low-voltage power distribution from Siemens.
SENTRON switch disconnectors: Full range – full power! Buildings are becoming increasingly more intelligent, production plants and systems continually more flexible and this means that low-voltage power distribution is truly becoming a ”main artery” – as never before. The current to power electric loads must flow – reliably, cost-effectively and safely.
For every task, every application and every concept. The optimum disconnector. Take the time and see for yourself. 3LD main control and EMERGENCY-STOP switches: For safe disconnection if the plant must be isolated from the line supply for a longer period of time. . . . . . . . . Pages 04–05 3K switch disconnectors: Whether with or without fuses – complete safety and performance in every version up to the moulded-plastic enclosure with IP65. . . . . . . . . . . . . .
SENTRON switch disconnectors: Well-proven, cost-effective – but always up-to-date! When all is said and done, there is one main issue when it comes to power circuits: Safe switching. In this area, switch disconnectors have always played an extremely important role as reliable circuit elements. Whether with fuses or without fuses. And there are at least five good reasons why these switch disconnectors should be called SENTRON.
Because SENTRON switch disconnectors can be used to address new requirements. As we continue to develop and innovate well-proven products. Because SENTRON switch disconnectors offer many application solutions – with a complete portfolio of products and a seamless range of associated accessories.
SENTRON main control and EMERGENCY-STOP switches 3LD: Simple. Modular. When repair or maintenance work is being carried out, the plant or system is disconnected and isolated from the line supply – naturally also when faults occur. Disconnectors that isolate systems from the line supply ensure that the complete electrical equipment can be safely disconnected and isolated.
Main control and EMERGENCY-STOP switches 3LD can be used as switches for front or base mounting, as switches in distribution panels and as switches in moulded-plastic enclosures in conjunction with rotary door-coupling drive mechanisms.
SENTRON switch disconnectors 3KA/3KE: Switching without fuses. The specialists for fuseless disconnection These switch disconnectors without fuses are used in distribution systems in residential and commercial buildings as well as in industrial switchboards. Switch disconnectors 3KA and 3KE reliably ”isolate” and ”switch under load” the specified rated current through either three or four phases.
The complete series of SENTRON switch disconnectors without fuses: 3LD, 3KA, 3KE Technical data: Switch disconnectors 3KE Standards Disconnector Rated continuous current Iu Rated operating voltage Ue 50 Hz/60 Hz AC DC IEC 60947-1, IEC 60947-3, VDE 0660 Part 107 Type 3KE42 3KE43 3KE44 3KE45 A 250 400 630 1000 V V V 690 440 (3 conducting paths connected in series) 220 (2 conducting paths connected in series) Rated short-circuit making capacity at 690 V AC 50Hz/60 Hz kA (peak value) Rated short-c
SENTRON switch disconnectors 3KL/3KM: Switching with fuses. Fuse protection against short-circuit and overload Switch disconnectors 3KL and 3KM can be Switch disconnectors 3KL and 3KM have fuses Standard, as frequency converter protection or which means that they additionally provide for fast mounting onto busbars. When they are protection against overload and short-circuit.
The complete series of SENTRON switch disconnectors with fuses: 3KL, 3KM and the rotary doorcoupling drive mechanism 8UC. Technical data: Switch disconnectors 3KL/3KM Standards Disconnector Rated continuous current Iu for fuse links acc. to DIN 43620 (when semiconductor protection fuse links are used, the rated current must be reduced, refer to the SITOR Catalog, Engineering (order No.
SENTRON fuse switch disconnectors 3NP: Protection against overload and short-circuit. When it comes to high requirements, there are no alternatives to our fuse switch disconnector 3NP. The reasons are quite clear: Even high short-circuit currents are safely handled and controlled, competitively priced back-up protection is provided, as well as straightforward selectivity calculations and absolute reliability – even when short-circuits occur.
With our standard 3NP4 series (size NH000 up to For the highest requirements in tough environments NH3), you have made the optimum choice for the These really are rugged devices: Our 3NP5 fuse majority of applications – from power distribution switch disconnectors (sizes NH00 to NH3) also in residential and commercial buildings through provide reliable protection where switch dis- flexible distribution stations up to power distribu- connectors must stand up to a lot.
SENTRON fuse switch disconnectors 3NJ: Offer the maximum level of safety with minimum width. These specialists combine the ”load switching” and ”isolating” functions in one device. And thanks to the integrated LV HRC fuses, they also provide full protection against overload and short-circuit.
Technical data: Fuse switch disconnectors 3NJ4 Standards IEC 60947-1, IEC 60947-3, DIN VDE 0660 Part 107 Disconnector Type Conventional thermal currents in air Ith A in the enclosure Ithe A Rated insulating voltage Ui V Rated operating voltage Ue AC 40…60 Hz V Rated conditional short-circuit current with fuses at 690 V AC 40 to 60 Hz kA (RMS value) Rated current In A of the fuses Permissible fuse let-through current kA (peak value) For fuse links Size/A Acc.
Ordering by fax +49 (911) 978-3321 SENTRON Would you like more information? Our pleasure! Yes, please send me additional information.
