power distribution - Siemens

Pushbutton Units and Indicator Lights30 mm Heavy Duty, Watertight/Oiltight, Class 52 Pushbutton Complete UnitsFeatures• Octagonal Mounting Nuts• Meets Type 1, 3, 4, 12, 13 and AutomotiveStandards• Heavy Duty Rated NEMA A600 Contacts• Positive Indexing Selectors• Bifurcated Movable Contacts• Attractive Chrome Plating• Boots Not Required for Type 4• UL Listed File # E22655• CSA Certified File # LR6535• Touchsafe TerminalsApplicationOil tight pilot controls and accessories aredesigned to provide long, trouble free servicein the most demanding industrial applications.These controls are oil and dust tightand meet Type 3, 4, 12 and 13 specifications.RuggedIndustrial control operators are durable onepiece castings. Heavy duty plastic buttonsresist oils and corrosion. Silver contacts withgold flashing carry heavy duty ratings whileallowing for low-voltage applications.FlexibleAccessories modify standard push buttons,selector switches and pilot lights. Buildingblock construction of contact blocks makespossible many circuitry combinations.Industrial AppearancePilot controls add luster to panels. Chromeplating covers exposed metal parts.Push Button OperatorsThe Operator Base consists of a durable,one piece casting equipped with a heavyduty actuator with a stainless steel spring, aneoprene actuator sealing ring to prevent oiland dust from penetrating to the contactblocks, a neoprene gasket to seal operatormounting hole and a chrome plated lock nut.Mushroom Head Push Button OperatorsThe Mushroom Head base construction isidentical to the push button base. The actuatoris molded of high impact material for eithera 1 5⁄8 inch or 2 1⁄2 inch diametermolded head.Contact BlocksContact Blocks have double break bifurcatedsilver contacts, with gold flashing asstandard, which improve contact fidelity.Contact blocks are heavy duty rated NEMAA600 and suitable for applications down to5V/1MA solid state outputs. Molded bodiesand pushers resist arcing and tracking. Allunits have stainless steel springs that resistcorrosion and provide strong contact pressure.Captive mounting screws speed panelassembly.Push Pull OperatorsPush Pull Operators combine two or threefunctions in one unit. The maintained operatorhas two positions, typically pull to start,push to stop. The momentary operator withthree positions provides spring return fromboth pull and push positions. These units arealso available with a pilot light.2 Button Maintained OperatorMaintained Push Buttons consist of two pushbuttons and a latching assembly. When actuatedthe button remains depressed and isfreed only by the release operator to which itis linked. The button assembly adjusts formounting from a 1 13⁄16 inch to a 2 5⁄8 inchcenter.Transformer Type Pilot LightsTransformer Type Pilot Lights are availablewith a 120, 240, 480 or 600 Volt primary (50/60 Hertz) and a separate secondary windingwhich supplies reduced voltage to a miniaturebayonet base 6 Volt lamp. These unitsare suitable for applications where vibrationis present and long bulb life is desirable.Full Voltage Type Pilot LightsFull Voltage Pilot Lights are available for 6,12, 24, 120 and 240 Volt AC and DC applications.The 240 Volt pilot light is supplied witha 120 Volt lamp and a voltage dropping resistorLED Type Pilot LightsLED’s (light emitting diodes) can be used inpilot lights instead of incandescent bulbs becauseof their long life (up to 10 years), resistanceto vibration and ambient sensitivity.Selector OperatorsSelector Operators have positive action indexing.Operators are available with either ashort or long lever. The molded black lever isdesigned to accept a color insert. A white insertis provided as standard. Each operatoris equipped with a cam to actuate plungersof contact blocks assembled behind the operator.Two, three and four position operatorsare available with seven different cams.Lever color inserts are available in 8 colors.Electrical RatingsNEMA AC Ratings 50/60HzNEMA A600 10 Continuous AmpsVolts Make Break120 60 6240 30 3480 15 1.5600 12 1.2VA 7200 720Ordering Information• Accessories see page 16-211.• Selector Position and Contact Operationpage 16-209.• Legend Plates see page 16-219.• Enclosures see page 16-220.16 CONTROLPRODUCTSPilot DevicesPilotLightPush ButtonSelector Operator Selector Push OperationSiemens Power Distribution & Control, SPEEDFAX 2007-2008 Product Catalog 16-189