power distribution - Siemens

Disconnect SwitchesType VB Panelboard UnitsFeaturesExclusive Vacu-Break ® ClampmaticArc Control — Hazardous switchingarcs are safely confined and controlled inthe Vacu-Break chamber.NEMA Phasing — All line connectionsare phased as per NEMA Standards, i.e.,left to right and top to bottom as youface the unit.Pressure Terminal Connectors —Suitable for aluminum or copper (100Amps or larger). All Terminal Connectors200 Amps and larger are removable.Connection Screws — Bullet nosed forpositive location and seating of screw.Quick-Make Quick-Break — Assuredby design of cam mechanism andpowerful springs. Positive operation in“ON”or “OFF” position results fromdesign of the cross arm and Vacu-Breakhead linkage.Easy Mounting — Mounting feet havecaptive bullet nosed screws added,which seat quickly and positively,reducing installation time.Padlocking Member — Provideslocking of handle in the “ON”or “OFF”position.Fibre End Barriers — Insulated EndBarriers prevent damage to wire duringinstallation and are designed withopenings large enough to accommodateremovable lugs (200 Amps and largerunits).High Pressure Spring ReinforcedCopper Fuse Clips — Provided extrapressure at the contact points. Fuseclips are removable from the front in 7 1 ⁄2"and 10" units and from the rear of 5"units.Voidable Cover Interlock — Permitsonly authorized personnel to void thedoor interlock and open door withswitch “on.” “Fool proof” mechanismwill not permit door to be closed unlesshandle is in the correct position.SpecificationsApplicationVB Panelboard Switches are intendedfor use in applications where:1. Rugged constructions, reliable performance,continuity of service and ease ofmaintenance are emphasized, or2. Available fault currents higher than10,000A are likely to be encountered, inmanufacturing plants, mass productionindustries and commercial, institutionaland other large buildings served by networksystems or transformers of highcapacities.GeneralShort Circuit Withstand RatingsSuitable for use on systems capable ofdelivering not more than 200,000 RMSsymmetrical amperes of fault currentwhen Class J or R fuses are installed.1200A switches are the exception,which are suitable for use on circuitscapable of delivering not more than100,000 RMS symmetrical amperes offault current when Class L fuses areinstalled. Also, 100–800A switches withClass T fuses and field adapter kit,which are 200,000 RMS symmetricalrated.FusesFusible switches will accept thefollowing UL Class fuses:Class HClass KClass R or J with proper adapter kitClass L — 800 and 1200A switchesClass T — 100–800 switches withproper adapter kitCover InterlocksVoidable cover interlocks standard on allswitches. Prevents cover from beingopened when switch is in the “ON”position.UL ListingListed by UL under file #E6849 asmiscellaneous switches and alsosuitable for use as service equipment(where applicable). Meets UL98standard for enclosed and deadfrontswitches.NEMA SpecificationsMeets NEMA standard KS-1-1990 fortype HD switches.Federal SpecificationsMeets previous federal specificationsW-S-865C for heavy duty switches (TypeHD) Type 1 switches — general purposeenclosed (Type 1).4 DISCONNECTSWITCHESSwitchMaximum Withstand Ratings — 240V ACMaximum Withstand Ratings — 600V ACRating H, K Fuses R Fuses J Fuses L Fuses T Fuses H, K Fuses R Fuses J Fuses L Fuses T Fuses1130–30 10,000 200,000 — — — 10,000 200,000 200,000 — —1130–60 10,000 200,000 200,000 — — 10,000 200,000 200,000 — —1160–60 10,000 200,000 200,000 — — 10,000 200,000 200,000 — —1160–100 10,000 200,000 200,000 — — 10,000 200,000 200,000 — 200,0001100 10,000 200,000 200,000 — 200,000 10,000 200,000 200,000 — 200,0001100–100 10,000 200,000 200,000 — 200,000 10,000 200,000 200,000 — 200,0001200 10,000 200,000 200,000 — 200,000 10,000 200,000 200,000 — 200,0001200–200 10,000 200,000 200,000 — 200,000 10,000 — 200,000 — —1400 10,000 200,000 200,000 — 200,000 10,000 200,000 200,000 — 200,0001600 10,000 200,000 200,000 — 200,000 10,000 200,000 200,000 — 200,0001800 — — — 200,000 200,000 — — — 200,000 200,0001200 — — — 100,000 — — — — 100,000 — 2 1 /2" units will not accept Class R or J fuse clip kits andare rated 10,000 AIC max. Ratings are for 600V switches and fuses when used on a240V max. AC system.Siemens Power Distribution & Control, SPEEDFAX 2007-2008 Product Catalog4-17