power distribution - Siemens

Pushbutton Units and Indicator LightsClass 50 Standard Duty Pushbutton StationsFeatures• Snap In Legend Inserts• Flush and Surface Mounted Types• Convertible Selector• Double Break Contacts• Dual Voltage Pilot Light with Snap In Lens• Conversion Kits• UL Listed File #E22655• CSA Certified File #LR6535ApplicationStandard duty control stations are used withmagnetic controllers to control the starting,stopping, reversing or speed of applicablemotors.Stations are assembled of one, two or threepush button, selector switch or pilot lightunits in a variety of combinations to providecompact control units for remote control ofmagnetic starters and contactors.Station enclosures are available in Type 1surface mounted, 1B flush plate mountedand 4 watertight.Padlock Attachment Kit50ZAL can be mounted to any Type 1 surfacemounted station by the lower screwwhich fastens the cover to the station base.Made of heavy steel, chrome plated, the attachmentprovides for the padlocking of apush button in the depressed position or aselector switch in any position. When usedwith a push button operator, raised LegendInsert D53493003 (Red Stop) must be used.Pendant BracketAdapts standard Type 1 surface mountedstations for suspension from a cable orchain. Bracket 50ZAP2 is used for one andtwo unit stations, 50ZAP3 for three unit stations.Electrical RatingsNEMA AC Ratings 50/60HzNema B600 5 Continuous AmpsVolts Make Break120 30 3240 15 1.5480 7.5 0.75600 6 0.6VA 3600 360Ordering Information• Legend Inserts see page 16-187.• Accessories see page 16-187.General16CONTROLPRODUCTSFeaturesType 1 surface mounted bases are constructedof 14 gauge sheet steel, primedand finished in baked gray enamel. Thebase is predrilled to receive a variety of contactblocks, pilot lights and accessory devices.Covers are of 20 gauge sheet steel,wrap- around construction, primed and finishedin baked gray enamel. Furnas Type 4watertight heavy duty push button stationsare supplied with a provision to padlock thestop button in the depressed position. Enclosuresare predrilled and tapped for 3/4" conduit.Contact blocks have double break, fine silvercontacts with a NEMA B600 rating. Type4 stations have a NEMA A600 rating.The pilot light assembly is dual voltage withclearly marked pressure type terminals for120 volt or 240 volt connection.The lens of the pilot light snaps into thecover and is available in both red and green.Push buttons are equipped with an operatorinto which a selected legend insert issnapped. Legend inserts are molded thermoplasticand come in a wide variety of legendsand colors.The selector switch operator can be instantlyset for two or three positions at any time.2 Push ButtonsSurface Mounting, NEMA 12 Push ButtonsFlush Mounting, NEMA 1BMushroom Head50ZMH mounts on any standard push buttonoperator. The Mushroom Head is red moldedthermoplastic, 1 1/2" in diameter, and providesa large operator for emergency stop orsimilar applications.Pilot DevicesMechanical Interlock50ZAM is a base mounted zinc plate, dichromatedipped, steel assembly. Whenmounted in conjunction with Duplex ContactBlock 50ZAC3 (one NO and one NO) the interlockprevents one contact from beingclosed while the other contact is closed.1 Push ButtonSurface Mounting1 Selector SwitchFlush Mounting2 Push Buttons1 Selector Switch1 Pilot Light2 Push Buttons16-180Siemens Power Distribution & Control, SPEEDFAX 2007-2008 Product Catalog