HP Class SMF, Class MMS and MRS, Type F02 Pilot Device Units and Indicator Lights Type 3SBO

Page 26

AC Controls

Pilot Device Units

General

Pilot Device Units and Indicator Lights — Type 3SBO

Pilot Device Options

3SBO pilot devices are built by Siemens in two basic forms - 1) as assembled for the most frequently used configurations, or 2) as subassemblies for greater flexibility.

Application

3SB0 devices are heavy duty oiltight, watertight, and dusttight (NEMA Type 4, 4X, 13, IP65). They are used in industrial control circuits at 600V or less. 3SBO pilot devices are available in two diame- ters, 7/8” and 1-13/64” (22 and 30 mm).

7/8” (22 mm) Mounting

The operator is inserted into the hole in the panel from the front and twisted into the contact block holder. The unit is then fixed from behind by means of two set screws which are located in the contact block holder, preventing the unit from working loose or twisting.

1-13/64” (30 mm) Mounting

The holder is an integral part of the actu- ator, it is inserted into the hole in the panel from the rear and secured from the front by means of a front ring. With the use of a legend plate or the thrust and trim washers, the unit becomes station- ary and will not twist or work loose.

Front Rings

Both units are supplied as standard with metal chrome plated front rings. Black plastic or anodized aluminum rings are optional at no additional cost. The plastic rings are recommended for use where the atmosphere may be corrosive.

LED Indicating Lights (Optional)

Since LED’s consume less power, their life is 10 to 20 times that of conventional incandescent lamps. They also provide greater resistance to shock and vibration. Where lamp integrity and low mainte- nance is crucial, the 3SB0 LED indicator is recommended.

Contact Blocks

One line of contact blocks fits both size devices. All have parallel double break contacts with wiping action and reliability nibs to insure long, maintenance-free

Pushbutton Unit

7/8” (22 mm) Mounting

operation. The design is also well suited to low energy circuits common on pro- grammable controller interfaces. Blocks snap side by side on the holder and lock in place. The contact block holder is avail- able in 3 and 5 position versions, elimi- nating the need for piggyback contacts which are hard to wire and prone to fail- ure. Terminals meet the “touchsafe” requirements of IEC standards and are clearly marked.

Wire funnels, screwdriver guides, and captive terminal screws make the con- tacts easy to wire while self lifting spring washers insure that the wire stays secure under severe vibration.

Special contact blocks are available for solder connection to printed circuit boards. When used with the special operator adaptor, they present a unique solution to multiple button operator panels.

Pushbutton Unit

1–13/64” (30 mm) Mounting

15

AC Controls

CSI Section 16160

Siemens Electrical Products and Systems

309

 

Specification Guide

 

Image 26
Contents General Manual Starters and SwitchesTypical Wiring Diagrams AC Controls Class SMF Heater Elements Horsepower RatingsManual Starters and Switches Features Two Unit Devices Nema Type 1 General Purpose Enclosure DimensionsGeneral Purpose Flush Mounting General Purpose Flush Mounting for Two Unit DevicesManual Motor Starter Switches Dimension / Wiring DiagramsTechnical Data General / Dimensions3VU13 Enclosure Dimensions Manual Motor Starter ProtectorClass 11 Manual Motor Starters General / Wiring DiagramsManual Motor Starters and Contactors Motor Starters Coil Data Magnetic ContactorsApplications 14 Reference LiteratureLighting and Heating Contactors Compact Magnetic Contactors Lighting 21 2-12 Pole DimensionsWiring Diagrams Typical 21WE 2-12 PoleCLM Contactors 300 and 400 Amperes, 2- and 3-Pole Magnetic Latch Operation Combination Lighting and Heating FeaturesDescription Ballast LoadDimensions Combination Starters Nema SizesContactors Non-Reversing Key Features27 Contactor Technical Data Starters Key Features Cont’dMagnetic Motor Starters Full Voltage Non Reversing Size 0 through Magnetic Motor Starters-Full Voltage Non ReversingAuxiliary Equipment Pole Single Phase Magnetic Contactors Size Dimensions / Wiring DiagramsContactor Dimensions Sizes 2-31/2 Pole 3 Phase Magnetic Contactors Size 4 1/ 2Enclosure Dimensions Enclosures303 Full Voltage, Non-Reversing Starters Nema Sizes RatingsMulti-Speed Starters Nema Sizes Torque Characteristics33 3-Phase Multi-Speed Starter Combination Multi-Speed StarterPart Winding Starter Auto Transformer StarterWye Delta Starter OperationShorted SCRa Phase LossSolid-State Reduced Voltage Starters Pump Stopa36 Solid-State Reduced Voltage Starters Pilot Device Units and Indicator Lights Type 3SBO Pilot Device UnitsEnclosed Pilot Device Stations Enclosed Pilot Device StationsGuide Form Specifications SpecificationsReduced Voltage Wye Delta Starters Reduced Voltage Autotransformer StartersMulti-Speed Starters Reduced Voltage, Part Winding Starters