Page 3 - SB Encased Systems Breakers; Table of Contents
1 SB Encased Systems Breakers Table of Contents General Information 2-5 Description 6-7 Stationary and Moveable Drawout Elements 6 Electronic Trip Units for Siemens SB Encased Breakers 7 Frame Installation Instructions 8-10 Stationary Drawout Element 8 Movable Drawout Element 9 Fixed Mounted 10 Inst...
Page 4 - General Information; Introduction; Siemens Encased Systems Breakers
2 General Information Introduction Siemens SB Encased Systems Breakers bridge the perfor-mance gap between Molded Case Circuit Breakers (MCCB)and Low Voltage Power Circuit Breakers (LVPCB). Modern computer-aided design and manufacturing tools wereused to effectively blend the technologies of the MCC...
Page 5 - Blue
3 General Information Frame Sizes and Frame Ampere Ratings SB breakers come in four frame sizes with MAX ratingsranging from 400A to 5000A. All frames are rated for 100%continuous operation. Frame Size and Rating Combinations Rating Plugs SB breakers use interchangeable rating plugs. The rating plug...
Page 6 - Insulated – Encased Construction; Photo of 2000A Frame Shown for Illustration Purposes Only
4 General Information NOTE: For more information on other standard andoptional trip unit features, see Siemens Electronic TripUnits for SB Encased Systems Breakers Information andInstruction Guide Bulletin IPIM-2203 and the Sentron Sys-tems Breaker Energy Communicating Trip Unit Information and Inst...
Page 7 - Compact Size
5 General Information Compact Size For space-limited installations, the 1200A and 2000A framesoffer a common width of 15 1 / 2 inches, a common depth of only 12 1 / 8 inches, a common mounting footprint, and com- mon bus center lines. This compact, shallow depth (even withdrawout breakers) permits s...
Page 8 - Description; Stationary and Moveable Drawout Elements; Simplified Minimum Depth Drawout Mechanism; Stationary Drawout Element
6 Description Stationary and Moveable Drawout Elements Simplified Minimum Depth Drawout Mechanism The two elements of a drawout constructed SB Encased Sys-tems Breaker are the stationary drawout element and themoveable drawout element. The stationary drawout elementmounts from the front or bottom int...
Page 9 - Electronic Trip Units For Siemens SB Encased Systems Breakers; Trip Units; Typical Trip Adjustment Unit Panel; Interchangeable Rating Plugs
7 Description Electronic Trip Units For Siemens SB Encased Systems Breakers Trip Units Two types of trip unit are available for the SB breakers. The TL(standard) Trip Unit features a full range of industry standardprotective settings. The new, high-performance SystemsBreaker Energy Communicating Tri...
Page 10 - Attach lifting device to identified lifting points only.; Frame Installation Instructions
8 Installation instructions for systems breakers, trip units, andrating plugs are presented in this section. Installation instruc-tions for accessories that may be installed in the field arepresented in the Accessories section. Installing Drawout Constructed SB Breakers Drawout constructed SB breaker...
Page 11 - Installing the Moveable Drawout Element; Preferred lifting arrangement.
9 Frame Installation Instructions Stationary, Moveable, and Fixed-Mounted Drawout Elements Installing the Moveable Drawout Element The outline drawings of the moveable drawout elements arelocated in the Outline Dimension Drawings section starting onpage 36. Carefully uncrate the moveable drawout ele...
Page 12 - Crank Pin in Unlocked Position; Installing Fixed-Mounted SB Breakers; Lifting straps should go between the stabs.
10 Frame Installation Instructions Stationary, Moveable, and Fixed-Mounted Drawout Elements To correctly engage the moveable drawout element with theracking mechanism, the crank pins on the sides of the move-able drawout element must be in the Unlocked position asillustrated and the release lever mu...
Page 13 - Installation Instructions; Electronic Trip Unit; CAUTION; Installation of Electronic Trip Unit
11 Installation Instructions Electronic Trip Unit CAUTION ! Installation of Electronic Trip Unit The SB breaker has a built-in interlock device that prevents thebreaker from being closed when there is not an installed tripunit. This same interlock device will trip the breaker when thetrip unit is re...
Page 15 - Electronic Trip Unit Rating Plug
13 Installation Instructions Electronic Trip Unit Rating Plug 8. Replace circuit breaker front cover. Replace the front cover. Then, replace the eight front coverscrews. 9. Re-install the eight screws that hold the front cover in place. CAUTION ! Verify that breaker is Open before inserting or remov...
Page 16 - To; insert; a rating plug in the trip unit, align the plug with the; remove; a rating plug, squeeze the clips and pull the plug; Do; the breaker with the rating plug removed from the
14 Installation Instructions Rating Plug CAUTION ! 3. Check label on the rating plug. Check the rating plug label to verify that it is the correct plugfor the trip unit. If it is not a correct plug, the pins will not matewith the plug receptacle. 4. To insert rating plug, align plug with plug recept...
Page 17 - Operating Instructions; Operating the SB Encased Systems Breaker; General Instructions; SB Encased Systems Breaker Controls and Indicators
15 Operating Instructions Operating the SB Encased Systems Breaker General Instructions Instructions for charging the stored energy mechanism, clos-ing and opening the breaker, and positioning and rotating themoveable drawout elements of the drawout-constructed SBbreakers are presented in this secti...
Page 18 - Manually Charging the Stored Energy Mechanism; do
16 Operating Instructions Operating the SB Encased Systems Breaker Manually Charging the Stored Energy Mechanism The stored energy mechanism may be charged with the SBbreaker open or closed. If the stored energy mechanism ischarged with the breaker open, sufficient energy is stored toclose and then o...
Page 19 - Avoid this procedure except for safety and/or; To discharge the energy, push and hold the; Closing the SB Breaker Locally
17 Operating Instructions Operating the SB Encased Systems Breaker Discharging the Stored Energy Mechanism Without Closing the SB Breaker Discharging the energy in the stored energy mechanism withoutclosing the breaker creates an abnormally high shock conditionon the breaker. Avoid this procedure ex...
Page 20 - Manipulating the Moveable Drawout Element; connected
18 Operating Instructions Manipulating the Moveable Drawout Element Manipulating the Moveable Drawout Element There are four positions of the moveable drawout element.These four positions are defined as Connected, Test,Unlocked, and Unlocked/Withdrawn. The connected position is the normal operating p...
Page 21 - Racking Controls; Racking Controls Locations; Directional Shift Lever; neutral
19 Operating Instructions Manipulating the Moveable Drawout Element Racking Controls A built-in, low-force pump handle and two control levers areused to rack the moveable drawout element between theConnected, Test, and Unlocked positions. Racking Controls Locations Directional Shift Lever The direct...
Page 22 - Racking Pump Handle; Racking Pump Handle in Stowed Position; Drawout Position Indicator
20 Operating Instructions Manipulating the Moveable Drawout Element Racking Pump Handle A low-force pump handle is used to rack the moveabledrawout element. The pump handle is an integral part of theracking mechanism, eliminating the need for an auxiliary rack-ing device. If there is any resistance ...
Page 23 - Fully Withdrawn and Unlocked Positions
21 Operating Instructions Manipulating the Moveable Drawout Element Fully Withdrawn and Unlocked Positions To move the moveable drawout element from the FullyWithdrawn position to the Unlocked position, push toward thebus connections until the moveable drawout element hits asolid stop. The secondary...
Page 24 - Unlocked Position to Test Position
22 Operating Instructions Manipulating the Moveable Drawout Element CAUTION ! Unlocked Position to Test Position Racking the moveable drawout element from the Unlockedposition to the Test position engages the moveable drawoutelement with the stationary drawout element. The physicalposition of the mo...
Page 25 - Test Position to Connected Position
23 Operating Instructions Manipulating the Moveable Drawout Element CAUTION ! Test Position to Connected Position To rack the moveable drawout element from the Test positionto the Connected position. 1. Push in the directional shift lever. This is the racking-in position. 2. Pull the release lever d...
Page 26 - Connected Position to Test Position
24 Operating Instructions Manipulating the Moveable Drawout Element CAUTION ! Connected Position to Test Position To rack the moveable drawout element from the Connected posi-tion to the Test position, ensure that the SB breaker is open. (Ifthe breaker is closed and the release lever is moved downwa...
Page 27 - Test Position to Unlocked Position; Relative Position of Finger Clusters to Bus Stabs
25 Operating Instructions Manipulating the Moveable Drawout Element CAUTION ! Test Position to Unlocked Position Racking the moveable drawout element from the Test position tothe Unlocked position disengages the moveable drawoutelement from the stationary drawout element. The physicalposition of the...
Page 28 - Internal Accessories; Preliminary Installation Procedures
26 NOTE: Refer to the separate SB Accessories Installationand Instruction Guide for information on AccessoryInstallation and ratings. Refer to the separate SB TroubleShooting Guide for trouble-shooting tips. CAUTION ! NOTE: Siemens recommends that all accessories beinstalled using the instruction in...
Page 30 - Preparation For Installation of Internal Accessories; Accessories
28 Internal Accessories Preparation For Installation of Internal Accessories . CAUTION ! NOTE: Refer to the separate SB Accessories Installationand Instruction Guide for information on AccessoryInstallation and ratings. Refer to the separate SB TroubleShooting Guide for trouble-shooting tips (IPIS-0...
Page 31 - Removing the Left and Right Drawout Mechanism; Complete the following steps to remove the crankshaft.; Reinstalling the Left and Right Drawout Mechanism
29 Internal Accessories Preparation For Installation of Internal Accessories Removing the Left and Right Drawout Mechanism Complete the following steps to remove the crankshaft. 1. Remove the E-rings from the bar cap pin on each side. Note: e-ring may be located on outside of plate.*Note this locati...
Page 33 - External Accessories; Siemens ACCESS Communications System; SB Breaker Communication; SB Systems Breakers; not
31 External Accessories Siemens ACCESS Communications System SB Breaker Communication All SB Circuit Breaker trip units feature two levels of communi-cation: Zone Selective Interlocking and ACCESS System open-protocol communications. The SB-EC Trip Unit is fully equippedfor direct integration into A...
Page 34 - Figure 1 System Connection Diagram
32 External Accessories Siemens ACCESS Communications System The MTCSB cable is used to connect an MTA or MTZ to an EPSB expansion plug via the SB breaker secondary terminal block or sliding disconnect. A. SB Breaker Zone Selective Interlocking (only) 1. All SB Breaker Trip Units Components Required...
Page 35 - Standard type ‘TL’ switch-based trip unit; Installing the ACCESS Sys-; Summary; Component; Component Selection Guide
33 External Accessories Siemens ACCESS Communications System B. SB Breaker ACCESS Communications (with or without Zone Interlocking) 1. Standard type ‘TL’ switch-based trip unit Components Required: • Siemens type MTZ – one per 8 trip units • Siemens type EPSB expansion plug – one per trip unit, fac...
Page 36 - Universal Test Kit; • If you enter a type of test that is not available on the breaker
34 General Information CAUTION ! Universal Test Kit Operating Instructions NOTE: Detailed instructions are supplied with the TS-31kit. 1. Remove electrical loads from circuit breaker. 2. Plug TS-31 test set into a grounded 120VAC receptacle and turn it on. The identifying turn-on message appears 3. ...
Page 37 - Outline Dimension Drawing; 20 0A Stationary Drawout Element; See Detail A
35 Outline Dimension Drawing 120 0A Stationary Drawout Element L C 4X Ø.438 3.25 Left Cradle Plate ShownCut Away For Clarity 3.50 2X 5.00 Provide Clearance Holes For 1/4 -20 Screws For Rear Mounting (4 Req’d) 2X 3.62 2X Ø.88 See Detail A 2X 1.00 2X 3.50 26.46 2X 2.00 1.75 .85 Preferred Mounting Surf...
Page 38 - Rear View
36 Outline Dimension Drawing 120 0A Stationary Drawout Element Optional RearMounting Surface 1.30 4X 2.50 Provide Clearance Holes For #8 - 32 ScrewsWhen Using Rear Flange Mounting Surface.(4 - Req’d) 13.75 4X 5.50 4X 1.00 2X 6.88 Of BusStab Of BusStab 20.00 10.00 8.75 2X .375 2X 1.00 8.562 12X Ø.281...
Page 39 - 20 0A Moveable Drawout Element; Front View
37 Outline Dimension Drawing 120 0A Moveable Drawout Element 3X Ø 1.25 1.74 2.13 .20 .94 4.56 4X.59 2.84 2X.44 2.84 4.56 .94 20.50 Overall 10.25 6.88 13.75 Overall 4.59 2.87 2.87 4.59 Front Panel CutoutMinimum Clearance (Escutcheon Dimensions) Front View Front View L C L C L C L C L C
Page 40 - Top View
38 Outline Dimension Drawing 120 0A Moveable Drawout Element 7.75 15.50 Front Cover LocationShown Provides MinimumClearance With Breaker .75 Breaker Test Position Breaker Fully Withdrawn 16.00 15.75 1.45 Breaker Handle Drawout Handle Front Cover .725 36 ° Minimum Clearance RequiredFor Breaker Rotati...
Page 42 - Side View
40 Outline Dimension Drawing 120 0A Fixed-Mounted 7.82 11.00 .95Typ. Clearance for Handle Rotation Ø .34 HolesTyp. 90 ° Max. .50Typ. 1.75 Typ. 3X Ø 1.25 2X .9 4 1.74 2.13 .20 4.56 4.56 4X .59 2X .44 2X 2.84 1.13 .37 14.00 9.75 R .125Typ. .75 .87 7.375 14.75 12X .38 X.43 Slot 4X Ø .44Mounting Holes ....
Page 43 - 0 0 0A Stationary Drawout Element
41 Outline Dimension Drawing 20 0 0A Stationary Drawout Element L C L C 2X 2.50 2X 9.75 C L Provide Clearance Holes For #8-32 ScrewsWhen Using Rear Flange Mounting Surface.(4-Req’d) 19.75 4X 8.50 4X 5.50 4X 1.00 20.00 Of BusStab Of BusStab 2X .375 2X 1.00 10.00 8.75 8.562 Typically 16 places Ø .281F...
Page 45 - 0 0 0A Moveable Drawout Element
43 Outline Dimension Drawing 20 0 0A Moveable Drawout Element 7.75 15.50 Front Cover LocationShown Provides MinimumClearance With Breaker .75 Breaker Test Position Breaker Fully Withdrawn 16.00 15.75 1.45 12.14 .725 Breaker Handle Drawout Handle Front Cover 21.82 10.31 7.82 R 13.50 47 ° Minimum clea...
Page 47 - Detail A
45 Outline Dimension Drawing 20 0 0A Fixed Mounted L C 7.82 Handle Clearance Rotation 2.87 2X 2.50 90 ° Max. 24 Ø .39 Holes 1.75Typ. 2X 7 . 12 1.75 .88 1.13 3.37 .75Typ. 11.13 12.13 11.63 11.38 See Detail A 5.00 5.00 7.75 15.50 2.375 2.76 .09 3X Ø 1.25 2X .94 1.74 2.13 .20 4.56 4.56 4X .59 2X .44 2X...
Page 57 - Electrical Schematics; Electronic Bell Alarm and Alarm Relay Combination Module
55 Electrical Schematics Electronic Bell Alarm, Display Module Relay (mutually exclusive devices) Electronic Bell Alarm and Alarm Relay Combination Module Remote Open/Close Relay 24 4 8 12 16 20 28 32 36 3 2 1 7 6 5 11 10 9 15 14 13 19 18 17 23 22 21 27 26 25 31 30 29 35 34 33 ALARM TRIP <RT12>...
Page 58 - DC Undervoltage Release Solenoid Schematic; DC Undervoltage Release; Monitored Source; External Breaker Connections; AC Undervoltage Release Schematic
56 Electrical Schematics DC Undervoltage Release Solenoid Schematic AC Undervoltage Release Solenoid Schematic Monitored Source <LT9> UVR+ UVR Coil <LT10> UVR– DC Undervoltage Release Internal Breaker Connections External Connections Undervoltage Release Connection + – Monitored Source E...
Page 59 - Shunt Trip Schematic; Shunt Trip
57 Electrical Schematics Shunt Trip Schematic Auxiliary Switch Schematic Shunt Trip <LT7> Remote Open-Closed Indication <LT8> Coil - (Common) COM NC <ST> NO <LT6> Coil+ “B” TypeClearing Switch Shunt Trip Coil Supplied by Customer Supplied by Customer Control Power + – Auxilia...
Page 61 - Neutral Transformer/EP/Remote Indicator Panel
58 Electrical Schematics Neutral Transformer/EP/Remote Indicator Panel Control Terminals Identification RT1 RT2 RT3 RT5 RT6 RT7 RT8 RT4 EC EXTERNAL POWER (+12) OR AUXILIARY SWITCH EC EXTERNAL POWER (+5) OR AUXILIARY SWITCH PTM OR AUXILIARY SWITCH PTM OR AUXILIARY SWITCH PTM OR AUXILIARY SWITCH PTM OR...
Page 62 - Electric Motor Operator; Legend
59 Electrical Schematics Electric Motor Operator Legend 1. Motor Operator Assembly 2. Remote Closing Solenoid Switch 3. Connector Strip 4. Motor Fuse Connector 5. UL Label (Not Shown) 6. DC or AC ECMC Assembly 8. B Switch Assembly (Motor Operator) 9. #10-32 UNC-2B x 1/4 PHMS 10. #10-32 UNC-2B x 3/8 ...
Page 63 - Electric Motor Operator Schematic
60 Electrical Schematics Electric Motor Operator Electric Motor Operator Schematic NC SWITCH "B" NO NC SWITCH HC (HANDLE CHECK) NO CCX IS NOT INSTALLED. THIS WIRE IS USED WHEN COM COM <LB2> <LB1> (CCX) ELECTRIC CLOSING OF THE 2 AMPS MAX. 120 W MAX. - + CONTROL POWER CUSTOMER SUPP...
Page 64 - Accessory Ratings; Motor Operator Current Draw
61 Accessory Ratings Motor Operator Current Draw Electrical D ata for Remote Close Solenoid Switch Contact Ratings Undervoltage Release Ratings Shunt Trip Ratings Supply Voltage Motor Rating (Amperes) 120VAC 24VDC48VDC 125VDC 3333 Coil Voltage Inrush Current (Amperes) Catalog Number 120V AC (60 Hz) ...
Page 65 - SB Solenoid Coil Resistances; UNDERVOLTAGE RELAY SOLENOIDS:; PRIMARY CURRENT INJECTION AND FIELD TESTING SB BREAKERS
SB Solenoid Coil Resistances SHUNT TRIP SOLENOID: Shunt Trip Plunger O.D. = 0.310 inch +/– 5% @ 20 degrees C 12 VDC – 3.6 ohms 120 VAC – 79.6 ohms 24 VDC – 14.2 ohms 240 VAC – 380 ohms 48 VDC – 55 ohms 480 VAC – 1163 ohms 125 VDC – 370 ohms Shunt Trip Plunger O.D. = 0.437 inch +/– 10% @ 20 degrees C...