Control panel design guide according UL 508A - Eaton

1 Control panel design guideControl panel design guideaccording UL 508A Build it CORPORATION Control panel design guideDesigning the panelMulti-Load panel ControllerControllerControllerController ControllerTransformer or Power SupplyOverload ProtectionOverload ProtectionOverload ProtectionOverload ProtectionBranchProtectionBranchProtecti onControllerOverload ProtectionBranchProtectionBranchProtecti onMMLG roup motor Multiple Motors Protected by a Single Set of Fuses or BreakerSee Page 10 Individual circuit for motor LoadSee Page 14 Heater or Lighting LoadSee Page 24 Feeder MainSee Page 4 ControlCircuit See Page 36 Single MotorLoadSee Page 52 ControlCircuitSee Page 36 Feeder MainTransformer or Power SupplyMMLB ranchProtectionFeeder Main ControllerControllerControllerController ControllerTransformer or Power SupplyOverload ProtectionOverload ProtectionOverload ProtectionOverload ProtectionBranchProtectionBranchProtecti onControllerOverload ProtectionBranchProtectionBranchProtecti onMMLG roup motor Multiple Motors Protected by a Single Set of Fuses or BreakerSee Page 10 Individual circuit for motor LoadSee Page 14 Heater or Lighting LoadSee Page 24 Feeder MainSee Page 4 ControlCircuit See Page 36 Single MotorLoadSee Page 52 ControlCircuitSee Page 36 Feeder MainTransformer or Power SupplyMMLB ranchProtectionFeeder MainSingle motor PanelOR3 Eaton CORPORATION Control panel design guideContentsFeeder Main 4 Group motor 10 Individual circuit for motor Load 14 Heater or Lighting Lead 24 Power circuit Wiring 32 Control circuit 36 Single motor Load 52 Feeder MainGroup MotorIndividual circuit for motor LoadHeater or Lighting LeadPower circuit WiringControl CircuitSingle motor Load4 Eaton CORPORATION Control panel design guideSizing the feederReference to UL 508A Section feeder amp rating is sized based on the sum of the amp rating of the largest branch protective device plus the full-load currents of the other

2 This example, the 125A circuit breaker is the largest short- circuit protective device. This value is added to the full load currents of the other loads in the circuit (motors, heater, and the primary of the transformer).The overcurrent feeder amp rating should not exceed the conductor ampacity rating on the loadside. For conductor ampacity ratings, see UL508 A Table Breaker 175 ACircuit Breaker 50 AFuses6 ACircuit Breaker 125 ACircuit Breaker 25 AOverload ProtectionOverload ProtectionOverload ProtectionControllerControllerTransforme r or Power SupplyControllerControllerControllerOver load ProtectionMotor LoadMotor LoadMotor LoadMotor LoadHeater LoadTransformer Load (Primary Side) FLA14 FLA65 Multi-Load Panel125A + + + 14A + 20A + 2A = 172A Use closest size, 175A5 Eaton CORPORATION Control panel design guideWhitepaper download: disconnect switches ( circuit Breakers and Molded Case Switches) equipped with door mounted rotary handles, and installed in industrial Control panels for industrial machinery applications, essentially require the use of an additional internally mounted supplementary handle in order to meet all of the requirements found in the relevant North Amer-ican standards dealing with this application.

3 Eaton s assortment of new supplementary handles meet these stricter requirements in both the UL 508A and NFPA 79 key requirements of relevant North American standards(2)(3)20 (1)Feeder Main6 Eaton CORPORATION Control panel design guideComplete assortment -> currentcircuit breakerfuse acc. NEC/CECM olded Case Switchmain switch assembly kit with additional rotary handlePart SCCR SCCR SCCR SCCR SCCR blackred-yellow480Y/ 277V480V600Y/ 347V480Y/ 277V480V600Y/ 347 VAkAAkA15 NZMB2-AF15(-BT)-NA25251815NS2-160(-BT)-N A10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF15( -BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF15( -BT) (-BT)-NA25251820NS2-160(-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF20( -BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF20( -BT) (-BT)-NA25251825NS2-160(-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF25( -BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF25( -BT) (-BT)-NA25251830NS2-160(-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF30( -BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF30( -BT) (-BT)-NA25251835NS2-160(-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF35( -BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF35( -BT)

4 -NA15015065 NZM2-XHB-DA-NANZM2-XHB-DAR-NA40 NZMB1-AF40-NA2540NS1-63-NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMN1-AF40- NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMB2-AF40( -BT)-NA25251840NS2-160(-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF40( -BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF40( -BT)-NA15015065 NZM2-XHB-DA-NANZM2-XHB-DAR-NA45 NZMB1-AF45-NA2545NS1-63-NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMN1-AF45- NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMB2-AF45( -BT)-NA25251845NS2-160(-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF45( -BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF45( -BT)-NA15015065 NZM2-XHB-DA-NANZM2-XHB-DAR-NA50 NZMB1-AF50-NA2550NS1-63-NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMN1-AF50- NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMB2-AF50( -BT)-NA25251850NS2-160(-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF50( -BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF50( -BT)-NA15015065 NZM2-XHB-DA-NANZM2-XHB-DAR-NAUL 489 circuit Breaker and Molded Case Switch Selection7 Eaton CORPORATION Control panel design guideComplete assortment -> 489 circuit Breaker and Molded Case Switch Selectionrated currentcircuit breakerfuse acc.

5 NEC/CECM olded Case Switchmain switch assembly kit with additional rotary handlePart SCCR SCCR SCCR SCCR SCCR blackred-yellow480Y/ 277V480V600Y/ 347V480Y/ 277V480V600Y/ 347 VAkAAkA60 NZMB1-AF60-NA2550NS1-63-NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMN1-AF60- NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMB2-AF60( -BT)-NA25251860NS2-160(-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF60( -BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF60( -BT)-NA15015065 NZM2-XHB-DA-NANZM2-XHB-DAR-NA70 NZMB1-AF70-NA2570NS1-100-NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMN1-AF70- NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMB2-AF70( -BT)-NA25251870NS2-160(-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF70( -BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF70( -BT)-NA15015065 NZM2-XHB-DA-NANZM2-XHB-DAR-NA80 NZMB1-AF80-NA2580NS1-100-NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMN1-AF80- NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMB2-AF80( -BT)-NA25251880NS2-160(-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF80( -BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF80( -BT)-NA15015065 NZM2-XHB-DA-NANZM2-XHB-DAR-NA90 NZMB1-AF90-NA2590NS1-100-NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMN1-AF90- NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMB2-AF90( -BT)-NA25251890NS2-160(-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF90( -BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF90( -BT)-NA15015065 NZM2-XHB-DA-NANZM2-XHB-DAR-NA100 NZMB1-AF100-NA25100NS1-100-NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMN1-AF100 -NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMB2-AF100 (-BT)-NA252518100NS2-160(-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF100 (-BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF100 (-BT)-NA15015065 NZM2-XHB-DA-NANZM2-XHB-DAR-NA110 NZMB1-AF110-NA25110NS1-125-NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMN1-AF110 -NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMB2-AF110 (-BT)-NA252518110NS2-160(-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF110 (-BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF110 (-BT)

6 -NA15015065 NZM2-XHB-DA-NANZM2-XHB-DAR-NA125 NZMB1-AF125-NA25125NS1-125-NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMN1-AF125 -NA35 NZM1-XHB-DA-NANZM1-XHB-DAR-NANZMB2-AF125 (-BT)-NA252518125NS2-160(-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF125 (-BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF125 (-BT)-NA15015065 NZM2-XHB-DA-NANZM2-XHB-DAR-NA150 NZMB2-AF150(-BT)-NA252518150NS2-160(-BT) -NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF150 (-BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF150 (-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NA175 NZMB2-AF175(-BT)-NA252518175NS2-200(-BT) -NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF175 (-BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF175 (-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NA200 NZMB2-AF200(-BT)-NA252518200NS2-200(-BT) -NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF200 (-BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF200 (-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NAFeeder Main8 Eaton CORPORATION Control panel design guideComplete assortment -> currentcircuit breakerfuse acc.

7 NEC/CECM olded Case Switchmain switch assembly kit with additional rotary handlePart SCCR SCCR SCCR SCCR SCCR blackred-yellow480Y/ 277V480V600Y/ 347V480Y/ 277V480V600Y/ 347 VAkAAkA225 NZMB2-AF225(-BT)-NA252518225NS2-250(-BT) -NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF225 (-BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF225 (-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NA250 NZMB2-AF250(-BT)-NA252518250NS2-250(-BT) -NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMN2-AF250 (-BT)-NA353535 NZM2-XHB-DA-NANZM2-XHB-DAR-NANZMH2-AF250 (-BT)-NA10010050 NZM2-XHB-DA-NANZM2-XHB-DAR-NA300 NZMN3-AEF300-NA424235300NS3-400-NA100100 50 NZM3-XHB-DA-NANZM3-XHB-DAR-NANZMH3-AEF30 0-NA10010050 NZM3-XHB-DA-NANZM3-XHB-DAR-NA350 NZMN3-AEF350-NA424235350NS3-400-NA100100 50 NZM3-XHB-DA-NANZM3-XHB-DAR-NANZMH3-AEF35 0-NA10010050 NZM3-XHB-DA-NANZM3-XHB-DAR-NA400 NZMN3-AEF400-NA424235400NS3-400-NA100100 50 NZM3-XHB-DA-NANZM3-XHB-DAR-NANZMH3-AEF40 0-NA10010050 NZM3-XHB-DA-NANZM3-XHB-DAR-NA450 NZMN3-AEF450-NA424235450NS3-600-NA100100 50 NZM3-XHB-DA-NANZM3-XHB-DAR-NANZMH3-AEF45 0-NA10010050 NZM3-XHB-DA-NANZM3-XHB-DAR-NA500 NZMN3-AEF500-NA424235500NS3-600-NA100100 50 NZM3-XHB-DA-NANZM3-XHB-DAR-NANZMH3-AEF50 0-NA10010050 NZM3-XHB-DA-NANZM3-XHB-DAR-NA600 NZMN3-AEF600-NA424235600NS3-600-NA100100 50 NZM3-XHB-DA-NANZM3-XHB-DAR-NANZMH3-AEF60 0-NA10010050 NZM3-XHB-DA-NANZM3-XHB-DAR-NA700 NZMN4-AEF700-NA424235700NS4-800-NA656542 NZM4-XHB-DA-NANZM4-XHB-DAR-NANZMH4-AEF70 0-NA858550 NZM4-XHB-DA-NANZM4-XHB-DAR-NA800 NZMN4-AEF800-NA424235800NS4-800-NA656542

8 NZM4-XHB-DA-NANZM4-XHB-DAR-NANZMH4-AEF80 0-NA858550 NZM4-XHB-DA-NANZM4-XHB-DAR-NA900 NZMN4-AEF900-NA424235900NS4-1000-NA65654 2 NZM4-XHB-DA-NANZM4-XHB-DAR-NANZMH4-AEF90 0-NA858550 NZM4-XHB-DA-NANZM4-XHB-DAR-NA1000 NZMN4-AEF1000-NA4242351000NS4-1000-NA656 542 NZM4-XHB-DA-NANZM4-XHB-DAR-NANZMH4-AEF10 00-NA858550 NZM4-XHB-DA-NANZM4-XHB-DAR-NA1200 NZMN4-AEF1200-NA4242351200NS4-1200-NA656 542 NZM4-XHB-DA-NANZM4-XHB-DAR-NANZMH4-AEF12 00-NA858550 NZM4-XHB-DA-NANZM4-XHB-DAR-NAUL 489 circuit Breaker and Molded Case Switch Selection9 Eaton CORPORATION Control panel design guideComplete assortment -> overviewUL 489 circuit Breaker and Molded Case Switch1 Switch-disconnector; circuit breaker; circuit breaker for North America; Molded case switches for North America2 IP2X protection against contact with a finger3 Terminal cover, knockout4 Terminal cover5 IP2X protection against contact with a finger6 Tunnel terminals7 Box terminals8 Control circuit terminal9 Connection width extension10 Adapter plate11 Busbar adapter12 Spacer13 Standard auxiliary contacts, trip-indicating auxiliary switches14 Rear operator15 Main switch rotary handle for side panel mounting16 Door coupling rotary 17 handle18 Extension shaft19 Rotary handle20 Remote operator21 Insulating surround22 External warning plate/marking plate23 Side operator handle24 Mechanical interlock25 Voltage release/Early-make auxiliary contactFeeder Main10 Eaton CORPORATION Control panel design guideGroup motor designReference to UL 508A Section following rules apply to manual motor controllers for motor loads only.

9 A single set of fuses or breaker can be used if the following conditions are met:1. All power circuit devices are rated for group motor use as indicated on the component, heater tables or instruction The following tap rule ( ) is met:a. The conductors to the individual loads are not less than 1/10 the ampacity of the branch circuit protection for each circuit provided with a manual motor Control -ler (MMC) marked Suitable as tap conductor protec-tion in group installations. Also, the conductors on the load side of the MMC shall not have an ampacity less than 125% of the motor FLA. 1. The branch circuit protection is sized by the sum of the following:a. If the branch protection is a breaker, 250% of the larg-est motor FLA, plus the sum of the remaining motor loads,b. If the branch protection is a time delay fuse, 175% of the largest motor FLA, plus the sum of the remaining motor loads, orc. If the branch protection is a CC fuse, 300% of the larg-est motor FLA, plus the sum of the remaining motor The branch circuit protection must not exceed the amp rating as specified in the group installation marking of the power circuit components and the type motor Multiple Motors Protected by a Single Set of Fuses or BreakerMMLMMLC ircuit Breaker 175 ACircuit Breaker 50 AFuses6 ACircuit Breaker 125 ACircuit Breaker 25 AOverload ProtectionOverload ProtectionOverload ProtectionControllerControllerTransforme r or Power SupplyControllerControllerControllerOver load ProtectionMotor LoadMotor LoadMotor LoadMotor LoadHeater LoadTransformer Load (Primary Side) FLA14 FLA65 CORPORATION Control panel design guideWhitepaper download: motor protection is described in detail in NEC Article for all motor circuits the 4 functions are required.

10 Disconnect (main switch) Short- circuit protection Operational switching (contactor) Overload functions can separately incorporate equipment or might be combined in one considerations for Manual motor Controllers and motor Starters in North AmericaMSC Manuel motor ControllerPKE Manuel motor ProtectorGroup Motor12 Eaton CORPORATION Control panel design guideComplete assortment -> circuit Current Ratings for single protection , group protection , tap conductor protectorsOverload tripAccessoriesSCCR Fuse breaker no.(A)(kA)(kA)(A)(A)(A)(A)1. Manual motor controller in group installations with upstream back-up protective device480 V600 V480 V600 V480 V600 V0,1 - 6,3-5050600 6,3 - 11-30 30 600 600600600 PKZM0-10 9 - 126518600 - 16-1010150150125 - 16with CL-PKZ05050600 - 25-1010150150125 - 25with CL-PKZ01818600 - - 32with CL-PKZ01818600 to 52-6542600600600600 PKZM4-50up to 56-6542600600600600 PKZM4-58up to 58-6542600600600600 PKZM4-632. Tap Conductor Protectors suitable for use in group installations480 Y/277 V*600 Y/347 V*The maximum rating of the branch circuit pro-tective fuse or circuit breaker is determined per the 1/10th rule.