Series Switch
2010
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 BEST Cisco 2500 2501 Series Router 1900 Switch CCNA Lab $170.99 Time Remaining: 14d 16h 28m Buy It Now for only: $170.99 |
 Cisco 7505 Network Router Series 7500 w 4 Cisco Switch Modules WORKING $89.99 Time Remaining: 18h 12m Buy It Now for only: $119.99 |
 Cisco 1700 Series 1760 Switch w Rack Ears $34.99 Time Remaining: 28d 20h 41m Buy It Now for only: $34.99 |
 BEST Cisco 2501 2503 Series Router 2924 Switch CCNA Lab $189.99 Time Remaining: 27d 23h 57m Buy It Now for only: $189.99 |
 WS C3524 PWR XL EN Cisco 3500 Series 24 Port PoE Switch w 1 Month Warranty $170.08 Time Remaining: 8h 34m Buy It Now for only: $170.08 |
 Kingston EtheRx Pro series KND1610TX 16 Port Switch Hub $15.00 Time Remaining: 21d 18h 47m Buy It Now for only: $15.00 |
 BEST Cisco CCNA Lab 2501 2503 Series Router 2924 Switch $161.99 Time Remaining: 26d 12h 53m Buy It Now for only: $161.99 |
 CISCO Catalyst 3550 Series WS C3550 48 SMI 48 Port Switch $89.99 Time Remaining: 1d 1h 46m Buy It Now for only: $89.99 |
 CISCO SYSTEMS 2500 SERIES 2524 ROUTER NETWORK SWITCH $9.99 Time Remaining: 15d 19h 15m Buy It Now for only: $9.99 |
 Cisco CCNA CCNP 2500 2501 Series Router 1900 Switch Lab $177.50 Time Remaining: 15d 23h 30m Buy It Now for only: $177.50 |
 Cisco WS C2950 24 Catalyst 2950 Series 1U 24 Port External Ethernet Switch 14 $74.99 Time Remaining: 6d 3h 56m Buy It Now for only: $74.99 |
 Cisco 2600 Series 2610 Routers 2924 Switches CCNA CCNP $251.99 Time Remaining: 21d 21h 6m Buy It Now for only: $251.99 |
 Lot of 2 Cisco WS C2950 24 Port Catalyst 2950 Series Switch $60.00 Time Remaining: 1d 46m Buy It Now for only: $60.00 |
 CISCO Catalyst 3550 Series WS C3550 24 EMI 24 Port Switch $99.99 Time Remaining: 1d 1h 45m Buy It Now for only: $99.99 |
 CISCO CATALYST 2960 SERIES SI 24 PORT SWITCH WS C2960 24 S V03 JE $89.99 Time Remaining: 19h 15m Buy It Now for only: $109.99 |
 Cisco Cache Engine 500 Series CE 505 Switch $30.00 Time Remaining: 20d 20h 50m Buy It Now for only: $30.00 |
 Cisco CCNA CCNP 2500 2501 Series Router 2924 Switch Lab $157.50 Time Remaining: 25d 2m Buy It Now for only: $157.50 |
 Zyxel Prestige 600 series ADSL Router with 4 port Ethernet Switch model 643 $6.00 Time Remaining: 7d 2h 59m Buy It Now for only: $6.00 |
 Cisco 12000 Series CSC 16 switch fabric controller NEW $149.00 Time Remaining: 15d 16h 56m Buy It Now for only: $149.00 |
 CISCO Catalyst 3550 Series WS C3550 48 EMI 48 Port Switch $119.99 Time Remaining: 1d 1h 48m Buy It Now for only: $119.99 |
 Cisco 3550 Series WS C3550 12G 12 Port Gigabit Network Switch with Rackmounts $149.00 Time Remaining: 15h 26m Buy It Now for only: $149.00 |
 Cisco WS C3750 48PS S Cisco 3750 Series 48 Port PoE Switch $500.00 Time Remaining: 8d 15h 26m Buy It Now for only: $500.00 |
 Motorola Netopia 4652 SDSL IDSL Router 4 Port Switch VPN XL 4600 Series NEW $295.00 Time Remaining: 9d 22h 24m Buy It Now for only: $295.00 |
 Cisco 1602R 1600 Series Wired Network Switch w WARRANTY $11.99 Time Remaining: 5d 18h 7m Buy It Now for only: $11.99 |
 Cisco WS C3750G 24T S V05 Catalyst 3750 Series 1U 24 Port Ethernet Switch 152 $729.99 Time Remaining: 16h 50m Buy It Now for only: $729.99 |
 Cisco WS C2950 24 24 Port Switch 10 100 Catalyst Catalyst 2950 Series $62.24 Time Remaining: 18d 21h 9m Buy It Now for only: $62.24 |
 CISCO DS SFP FC4G SW MDS 9000 Series Multilayer Switches SFP $14.58 Time Remaining: 20d 4h 23m Buy It Now for only: $14.58 |
 Cisco WS C2950T 24 Catalyst 2950 Series 1U 24 Port Ethernet Switch 115 $84.99 Time Remaining: 5d 3h 25m Buy It Now for only: $84.99 |
 Cisco 800 series 837 ADSL modem router switch 64 12MB $38.87 Time Remaining: 1d 11h 28m Buy It Now for only: $53.45 |
 COMPAQ 242809 003 4110 Series 8 Port KVM Switch $34.02 Time Remaining: 6d 1h 13m Buy It Now for only: $34.02 |
 Cisco Catatlyst 2900 Series Model WS C2924 XL EM Switch $59.99 Time Remaining: 10d 19h 55m Buy It Now for only: $59.99 |
 CISCO WS C2960 24TT L Catalyst Switch 2960 series $300.00 Time Remaining: 5d 20h 38m Buy It Now for only: $300.00 |
 CISCO WS C2980G A Catalyst 2900 Series 80 Port Switch $95.00 Time Remaining: 10d 18h 12m Buy It Now for only: $95.00 |
 Cisco Catalyst 5000 Series WS C5000 Switch $229.00 Time Remaining: 12d 3h 58m Buy It Now for only: $229.00 |
 OmniView 2 port KVM Switch w Audio SOHO Series $15.00 Time Remaining: 18h 23m Buy It Now for only: $15.00 |
 Cisco 1900 Series Mod WS C1924 A 24 Port Network Switch $69.95 Time Remaining: 8d 18h 21m Buy It Now for only: $69.95 |
 CISCO 2500 SERIES ETHERNET ROUTER 2501 NETWORK SWITCH $49.99 Time Remaining: 8d 23h Buy It Now for only: $49.99 |
 SNFC503 StorageTek 3300 Series Fibre Channel Switch $116.95 Time Remaining: 28d 19h 1m Buy It Now for only: $116.95 |
 Cisco 7500 Series RSP2 Route Switch Processor 2 NIB $64.50 Time Remaining: 21d 22h 17m Buy It Now for only: $64.50 |
 Cisco 7000 Series Router 7010 + Route Processor Silicon Switch FDDI Fast Serial $599.99 Time Remaining: 8d 51m Buy It Now for only: $599.99 |
 Premium Edge License For Switch 5400 Series j8994a $2,196.04 Time Remaining: 1d 22h 9m Buy It Now for only: $2,196.04 |
 Cisco 7505 Series 7500 Network Router w 5 Cisco Switch Modules WORKING $89.99 Time Remaining: 2d 54m Buy It Now for only: $99.99 |
 RSP 4 CISCO 7500 SERIES ROUT ROUTE SWITCH PROCESSOR 4 $30.00 Time Remaining: 29d 20h 53m Buy It Now for only: $30.00 |
 Cisco 2950 Series Catalyst WS C2950T 24 24 Port Switch $135.00 Time Remaining: 28d 16h 40m Buy It Now for only: $135.00 |
 CISCO Catalyst WS C3550 48 SMI Switch 3500 Series $338.75 Time Remaining: 28d 17h 36m Buy It Now for only: $338.75 |
 CISCO WS C3560E 48PD S 3560 E Series PoE Switch Tested w ipbase license tm $2,890.00 Time Remaining: 28d 21h 4m Buy It Now for only: $2,890.00 |
 Cisco Catalyst 2950 Series WS C2950G 24 EI Switch w 24 Ports and 2 GBICs $265.00 Time Remaining: 28d 17h 33m Buy It Now for only: $265.00 |
 HP Procurve J8713A High power 1500 W power supply for zl series switches $250.00 Time Remaining: 2d 7m Buy It Now for only: $250.00 |
 DS1404090 8691SF switch fabric CPU module Nortel Networks Passport 8600 series $149.00 Time Remaining: 27d 17h 11m Buy It Now for only: $149.00 |
 Cisco 3750 Series Catalyst WS C3750G 24TS S 24 Port Switch 3750G $2,950.00 Time Remaining: 26d 5h 29m Buy It Now for only: $2,950.00 |
 Cisco Catalyst WS C2960G 48TC L Switch 2900 Series $2,750.00 Time Remaining: 13d 3h 5m Buy It Now for only: $2,750.00 |
 Cisco Catalyst 3750 Series WS C3750G 48PS S 48 Port Switch $6,950.00 Time Remaining: 13d 4h 45m Buy It Now for only: $6,950.00 |
 Cisco 3560 Series Catalyst WS C3560G 24PS S 24 Port Switch $2,625.00 Time Remaining: 26d 4h 29m Buy It Now for only: $2,625.00 |
 Cisco Catalyst 3560 Series WS C3560G 48PS S 48 Port Switch 3500 3560 $5,325.00 Time Remaining: 26d 4h 40m Buy It Now for only: $5,325.00 |
 Cisco 3750 Series Catalyst WS C3750G 48TS S 48 Port Switch $7,440.00 Time Remaining: 26d 5h 4m Buy It Now for only: $7,440.00 |
 Cisco Catalyst 2900 Series XL WS C2912 12 Port Switch 4158 $4.99 Time Remaining: 3d 23h 51m |
 Cisco Catalyst 4900 Series WS C4900M 8 Port Layer 3 Switch $9,595.00 Time Remaining: 28d 17h 18m Buy It Now for only: $9,595.00 |
 Cisco 3560 Series Catalyst WS C3560G 24TS S 24 Port Switch $2,395.00 Time Remaining: 28d 18h 54m Buy It Now for only: $2,395.00 |
 Cisco 3750 Series Catalyst WS C3750G 12S SD Gigabit Ethernet Switch $3,825.00 Time Remaining: 28d 18h 49m Buy It Now for only: $3,825.00 |
 Cisco Catalyst 4500 Series WS X4524 GB RJ45V 24 Port PoE Switch $2,087.50 Time Remaining: 28d 14h 47m Buy It Now for only: $2,087.50 |
 Cisco Catalyst 2900 Series WS C2960G 24TC L 24 Port 10 100 1000 Switch $1,722.50 Time Remaining: 13d 2h 57m Buy It Now for only: $1,722.50 |
 Cisco 3750 Series Catalyst WS C3750 48PS S 48 Port Switch Cisco PoE Switch $2,920.00 Time Remaining: 27d 3h 41m Buy It Now for only: $2,920.00 |
 Cisco RSP16 Route Switch Processor 7500 Series Used $895.00 Time Remaining: 4d 21h 16m Buy It Now for only: $895.00 |
 Cisco 5505 series 24 Port 10 100 Base TX Switch Module WS X5225R $20.00 Time Remaining: 20h 11m Buy It Now for only: $20.00 |
 Cisco 3600 Series Router Switch $75.00 Time Remaining: 18d 18h 23m Buy It Now for only: $75.00 |
 Cisco 2500 Series Routers LOT OF 3 SWITCHES $45.00 Time Remaining: 18d 18h 57m Buy It Now for only: $45.00 |
 ENTERASYS X4 FM X Series Switch Fabric Module for X4 C Chassis $995.00 Time Remaining: 23d 10m Buy It Now for only: $995.00 |
 Cisco Catalyst 3500 Series XL Switch WS C3524 XL EN $35.99 Time Remaining: 15h 2m Buy It Now for only: $35.99 |
Series Switch
Interior Ct and Cm Switch Boxes Manufactured by Eti Polam
Interior switch boxes type CT and CM fabricated from the plastic are manufactured as devices mounted on or under the wall plaster, with full door (PO) or transparent door (PT)- Fig. 1. They can be installed both in newly constructed buildings and in old buildings, where electric wiring is modernized. They are adapted mostly in apartments buildings, family houses and in commercial facilities. Switch boxes are available in one row version up to three row version. In every row there is the place for12+1 standard- modules with the width 17, 5 mm. They are intended for the assembly of the standard- modular equipment. Switch boxes series CT and CM have great interest everywhere, the quality and aesthetics of works is important. Thanks to the modern style and design, they are in tune with the inside decorations of every kind of the interior. They have original casing shape with round edges and decorated with moldings doors. The construction of switch boxes makes possible the door opening on left or the right side with angle of 180o. Casing is made from self-extinguishing material ABS, with very good mechanical proprieties and big resistivity. They are available in the white color - RAL 9010. Complete set is provided with clamps {connectors} N and PE - Fig. 4, which can be installed in upper or the lower part of the switch box. All switch boxes have high fire and flame resistance (respectively in 650oC and 850oC temperatures according to PN-IEC 60695-2-1 norm), they have isolations class II, cover protection degree IP40 and the protection degree against mechanical shocks IK 08. They comply also with requirements of many European and Polish norms, e.g. PN-IEC 439-3, IEC 670 and EN 60439-3.
Assembly
A basic advantage of CM and CT switch boxes is the ease of the assembly on all kinds of walls, from traditional - concrete and brick walls - to plaster- walls. Switch boxes can be placed in walls and sectional sides with small thickness, their depth is only approx. 72 mm. Switch boxes consist of two parts : back, to which are attached mounting rails TH 35 intended to the modular equipment and clamps {connectors} N and PE, and also screwed to the front cover door.
Easily removed mounting rails are fastened with screws to the base. Electricians like this method of switch boxes construction, which makes easy the work, considerably saves the assembly time and equipments. The base of the switch box can be fastened to the wall with screws, embedded by polyurethane foam or simply built in. Modular devices mounted on rails are connected with lines(in accordance with project)in the manufacturer’s electric workshop or on the assembly table on the construction side. This can avoid uncomfortable installation devices directly on the wall and can avoid damages or even destructions of the switch box during other builder’s-assembly-works. The frontal plate is equipped with mask (hood), which can be easily break off, according to the number of modular devices provided for installation. The breakup of masks in required places for the purpose of installing the definite number of modular devices is quick and not inconvenient. In case of the incorrect masks breakup, there is the possibility of the repeated blindness of not used areas with spare covers. Then, mounting rails are screwed to the switch box base, breaks off special extractions for making easy insertion of wires and connects inputs and outputs of the circuits. The whole device is covered with the front cover along with door, screwed with screws in four corners of the switch box. The cover is equipped with special masks (hoods), which protect screws.
Wires ducting
Switch boxes have enough space for ducting the electric conductors, what considerably makes installation works easy. Wires can be put in inwards of the switch box from every side. The construction of the box makes also possible the free and safe access to the installed equipment. The size of the box ensures a lot of places for the additional equipment and cables and lets the free access to wires during the assembly. Wires can be easily lead next to devices or under
the TH35 rail. In switch boxes, mounted under the wall plaster, the part assembled in the plaster, has special extractions, whose breakup makes possible cables insertion from all sides. In switch boxes, mounted on the wall plaster, similar extractions are placed in backside of the casing, assuring an aesthetical look of the device.
Additional accessories
Switch boxes type CT and CM are provided with following accessories: the patent- lock with the key, which can be individually installed to the switch box door, and connecting elements along with gaskets for coupling switch boxes into groups with protection degree IP55. Under a row of devices, self-adhesive tags with device signature can be placed. Every switch box can be sealed up, what protects the device from the interference of un-authorized persons. Summing up, thanks to such advantages as universal use, interesting pattern-designing, the high grade of used materials and the simply assembly and installation, switch boxes series CT and CM, have great interest among electricians, architects and investors.
About the Author
What will happen when you placed a switch in series with the circuit?What if, in parallel with the circuit?why?
A switch in series will work like it should - turn it on, current flows in the circuit. Turn it off and current stops.
A switch is never used in parallel in real life, but if you were to connect the switch in parallel with the load when the switch is "off", current will flow through the load normally, and with the switch "on" it will be short circuiting the supply and probably burn out. If your switch can take the short circuit current without burning out, then most of the current will flow through the switch, because it has almost no resistance (whereas the load has a higher resistance), so your load will get no current. By "load" I mean the thing your circuit is powering (for example a lightbulb or a motor). Thus in this case the lightbulb will go out, or the motor will stop turning, when the switch is put in the "on" position.
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