Siemens CLM Lighting Contactor Installation & Maintenance
Below you will find brief information for Lighting Contactor CLM. The CLM contactors are rated for 20 amps lighting loads and 30 amps general purpose. They are UL508 listed and are available in 2 – 12 pole single throw double break. Control voltages are from 120 to 480Vac. The CLM contactor and kits are suitable for mounting in class 49 enclosure kits. The enclosure kits include instructions for mounting the CLM contactor in the enclosure.
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Installation & Maintenance E87010-A0103-T003-A6-CLM0 February, 2013 Supersedes Issue of August 2010 CLM Lighting Contactor 20 Amp Mechanically Latched IMPORTANT THESE INSTRUCTIONS DO NOT PURPOSE TO COVER ALL DETAILS OR VARIATIONS IN EQUIPMENT, NOR TO PROVIDE FOR EVERY POSSIBLE OPERATION OR MAINTENANCE. SHOULD FURTHER INFORMATION BE DESIRED OR SHOULD PARTICULAR PROBLEMS ARISE WHICH ARE NOT COVERED SUFFICIENTLY FOR THE PURCHASER’S PURPOSE, THE MATTER SHOULD BE REFERRED TO THE LOCAL SIEMENS SALES OFFICE. THE CONTENTS OF THIS INSTRUCTION MANUAL SHALL NOT BECOME PART OF OR MODIFY ANY PRIOR OR EXISTING AGREEMENT, COMMITMENT OR RELATIONSHIP. THE SALES CONTRACT CONTAINS THE ENTIRE OBLIGATION OF SIEMENS. THE WARRANTY CONTAINED IN THE CONTRACT BETWEEN THE PARTIES IS THE SOLE WARRANTY OF SIEMENS. ANY STATEMENTS CONTAINED HEREIN DO NOT CREATE NEW WARRANTIES OR MODIFY THE EXISTING WARRANTY. Hazardous Voltage can cause death, serious personal Injury, or property damage Disconnect power before working on this equipment. Table A – Maximum AC Voltage and Amp Ratings For the CLM Main Contacts (open or closed) Figure 1. CLM 12 Pole Contactor Introduction This publication is designed to simplify installation, inspection, and maintenance through the use of illustrations. This information should be read carefully. Description These are 2 to 12 pole contactors for lighting and general purpose applications within the rating shown on the nameplate of the equipment. Mounting in Enclosure The CLM contactor and kits are suitable for mounting in class 49 enclosure kits. The enclosure kits include instructions for mounting the CLM contactor in the enclosure. Refer to the Siemens Industrial Controls or Speedfax catalogs for more information on the class 49 enclosure kits. Ratings The CLM contactors are rated for 20 amps lighting loads and 30 amps general purpose. They are UL508 listed and are available in 2 – 12 pole single throw double break. Control voltages are from 120 to 480Vac. See Tables A, B, and C for contact ratings. Siemens Industry, Inc. 5300 Triangle Parkway, Norcross, GA 30092 Poles to Load Load Type Amperes Continuous 1 for 1Ø 2 for 1Ø 3 for 3Ø Tungsten 20 250 Vac 250 Vac Ballast 20 347 Vac 600 Vac General 30 347 Vac 600 Vac Table B – Maximum DC Voltage and Amp Ratings For the CLM Main Contacts (open or closed) Poles to Load Load Type Amperes Continuous 2 in Series 3 in Series General 20 125 Vdc 250 Vdc Table C – Withstand Current Ratings for CLM Contactor (Available Symmetrical Amperes RMS) At AC Service Voltage When Used with Molded-Case Circuit Breakers Withstand Current Maximum Breaker Rating (amps) Size (amps) 250 V 22,000 30 480 V 14,000 30 600 V 10,000 30 Page 1 of 8 Wiring Solid-State Control Modules Line and Load Connections These control modules, when required, are connected and mounted on the bottom or right side of the contactor depending on the number on contactor poles. A control module can be field installed by ordering the appropriate module kit. Refer to Table F for control module kit numbers. Line and load terminals are reversible. The contactor is ULlisted for use with 60 or 75º C cable. All power wires should enter enclosure adjacent to the contactor terminals. These terminals accept wire sizes #18 - 10 AWG Cu. Insert appropriate line and load wires and tighten clamp screws to 18 inch-pounds. Control Line Connections Control circuit connections designated L, O, C on the right side are supplied with clamp type terminals. These terminals accept wire sizes #18 – 10 AWG Cu. Simply insert appropriate control wires and tighten terminal clamp screws to 18 inch-pounds. See the wiring diagram. CAUTION: Install over current protective devices for the control circuit in accordance with applicable electrical codes. Table D lists the CLM coil inrush current and minimum control circuit fuse size. Table D – Inrush Current / Minimum Fuse Inrush Current Over Fuse Size (amps RMS) at AC Control Voltage Amps 120 V 240 V 277 V 347 V 600 V Inrush 5.0 2.5 2.2 1.8 1.3 Fuse 2.0 1.0 1.0 0.75 0.5 Table E lists the maximum distances and minimum wire sizes that can be run between a control station and one CLM contactor. Table E – Control Line Run Maximum Distance (feet) at AC Control Voltage Wire Size (AWG) 120 V 240 V 277 V 347 V 600 V 14 1,050 3,100 4,100 5,600 8,800 12 1,670 5,000 6,600 9,000 14,000 10 2,650 8,000 10,600 14,000 22,000 CAUTION: Do not exceed these distances for proper contactor operation. Pilot Devices An “on – off” selector switch can be added to the enclosed contactor. Use pilot device kit 49SBSB4 for use in enclosure kit beginning with 49EC14. Use pilot device 49SAS04 for use in enclosure kits beginning with 49EB14, 49EB22, 49EC17, and 49EC18. These pilot devices must be used with control modules. If control module is not used a SPDT type control device will be required. (See Figure A in the wiring diagram) Follow instructions in pilot device kits for proper installation. See wiring diagram in this instruction bulletin for all control wiring. Page 2 of 8 Operation CLM437977 Accessory 47 control modules are for two-wire control of the CLM Contactor ONLY. The module must be energized to close the contactor and de-energized to open the contactor. Therefore, use a single pole, maintained type control station to operate the module. See Figure B in the Wiring Diagram. CLM437978 Accessory 48 control modules are for threewire control of the CLM Contactor. One terminal must be energized to close the contactor; another terminal must be energized to open the contactor. If neither or both terminals are energized, no output will occur. Therefore, use a single pole, double throw, momentary type control station to operate the module. See Figure C in the Wiring Diagram. CLM437979 Accessory 49 control modules are for Form 3 (start – stop) control of the CLM Contactor. The module must be energized to close the contactor, and de-energized to open the contactor. Therefore, use one normally closed and one normally open separate control stations to operate the module. See Figure D in the Wiring Diagram. There are four different control voltages for each control module. Each module is suitable only for the control voltage marked on it. Refer to Table F. Ratings for the control modules are listed in Table G. Table F – Accessory 47, 48, 49 Module Kit Numbers Module Control Voltage 2-Wire Control Accessory 47 Module 3-Wire Control Accessory 48 Module Form 3 Control Accessory 49 Module 120 Vac CLM4379771 CLM4379781 CLM4379791 24 Vac & dc CLM4379772 CLM4379782 CLM4379792 240/277Vac CLM4379773 CLM4379783 CLM4379793 12 Vac & dc CLM4379774 CLM4379784 CLM4379794 Table G – Ratings for Control Modules Nominal Input Voltage .......... see Table F, AC voltages are 50/60 Hz Control Voltage Range ................................... 80 to 125% of nominal Ambient Temperature Range Operate ........................ 0º C to +45º C Ambient Temperature Range Storage...................... -30º C to +65º C Burden: Typical Values (VA) ....................................see Table below Acc. 47 Acc. 48 Acc. 49 Module Control AC DC AC DC AC DC 120 Vac 1.90 – 1.60 – 3.70 – 24 Vac & dc 0.85 0.36 0.34 0.38 0.70 0.72 240/277Vac 4.00 – 2.50 – 6.00 – 12 Vac & dc 0.60 0.32 0.34 0.36 0.68 0.70 Siemens Industry, Inc. 5300 Triangle Parkway, Norcross, GA 30092 Control Module Installation Connections The control module is mounted to the contactor on the bottom or right side depending on the number of contactor poles. While holding in the bus strips, disconnect the two quick connect leads from the contactor and replace the module as follows: Connections to the Accessory 47, 48, and 49 control modules are shown in Table H. Barrier screw type terminals accept #22-12 AWG Cu control wiring. See label information (Figure 4) and the wiring diagram. Bottom Mounting For contactors with up to 6 poles the module is mounted directly into the lower part of the contactor with two short screws in the tabs. Install the module (tabs up) and tighten the screws to only 5 inchpounds. See Figure 2. CAUTION: Do not over tighten screws! Table H – Connections to Control Modules Module Terminal Connect To 1 N o t u s ed 2 Control station for Acc. 48, 49 3 Control station for Acc. 47, 48, 49 4 See Caution Module control voltage 5 Contactor control voltage O O on contactor C C on contactor CAUTION: For DC modules be sure to connect terminal 4 to negative (-). For AC modules connect terminal 4 to the neutral wire of the control line. The control modules have two colored leads with quick connect terminals for connecting to the O and C terminals: connect the yellow wire to the O terminal, connect the orange / black wire to the C terminal. For reverse operation connect the yellow wire to the C terminal, and connect the orange / black wire to the O terminal. Figure 2. Control Module – bottom mounted Side Mounting For contactors with more than 6 poles the module is mounted on the right side of the contactor with two contact block screws. Loosen the two existing screws on the right side of the upper and lower contact block assemblies and back out the screws to clear the cutouts in the contact block so that the module’s mounting tabs are released. Remove the module and install the new module (tabs left). Retighten the two screws (through the module’s mounting tabs) to 10 inch-pounds. See Figure 3. CLM437977 CLM437978 CLM437979 Figure 4. Control Module Labels Connect the external control wiring for the module to terminals 2, 3, and 4 on the module as shown on the wiring diagram (back page). Terminal 2 is not used on Accessory 47 and terminal 1 is not used on any modules listed here. Figure 3. Control Module – side mounted Siemens Industry, Inc. 5300 Triangle Parkway, Norcross, GA 30092 Connect the control wiring for the contactor (coil voltage) to terminal 5 on the control module and terminal L on the contactor. If the line voltage (service) is the same as the coil voltage, the control voltage can come directly from the poles of the contactor. Tighten all module terminal screws to 12 inch-pounds. Page 3 of 8 Auxiliary Contacts Manual Operation Table I – Auxiliary Contacts Kit No. Switches Contacts CLM4097291 1 Form C SPDT CLM4097292 2 Form C SPDT These auxiliary contacts can be field installed on the left side of the contactor. The auxiliary contacts operate along with the main contacts to provide remote indication of position (closed or open). Each auxiliary contact provides a form c, spdt (single pole double throw) contact rated 10 amps at 277 V ac. How to Install Auxiliary Contacts 1. 2. 3. 4. 5. Insert the #8-32 operating screw (from the kit) into the center of the coil and carefully turn it clockwise until the threads engage the cam/core. See Figure 6. Pull the operating screw outward to pull the cam/core up. Remove the operator screw. Insert the lever (from the kit) into the left side of the contactor as shown in Figure 5. The end of cylindrical section should fit flush into the contactor. Push the operator screw inward to push the cam/core down. Assemble the contactor(s) with leads and miniature switch(es) from the kit. Insert the mounting screw through the miniature switch(es) (far hole). Very carefully install the assembly onto the guide pin on the left side of the contactor. Tighten the screw to ONLY 4 inch-pounds. A #8-32 screw 1 ½ inches long can be used to manually operate the contactor. One is supplied in all replacement parts kits requiring manual operation. The screw should be used for maintenance purposes ONLY. Remove the screw after maintenance. See Figure 6. WARNING: Do not manually operate the contactor until all power and control circuits are disconnected. Disconnect all power, then use a voltmeter to verify no voltage is present at the contactor at both control and line terminal screws. Insert the operating screw into the center of the coil and carefully turn clockwise until the threads engage the cam/core. Pull the screw outward to open the contactor contacts; push it in to close the contacts. Observe the buttons in the contact block (buttons out means contacts open). #8 – 32 screw 1 ½ ” long CAUTION: Do not over tighten screws! Figure 6. Manually Operating Screw Replacement Parts Replacement parts kits are available for repair of CLM contactors or to allow changes in pole configuration, voltage, control modules, and auxiliary contacts. Contact your local Siemens Authorized Distributor or Sales Office. Figure 5. Auxiliary Contacts Page 4 of 8 Siemens Industry, Inc. 5300 Triangle Parkway, Norcross, GA 30092 Contact Block Replacement Table J – Contact Block Kits (quantity & location) Contact Block Kit No. CLM4097331 CLM4097332 Number of Contactor Poles 2 1 top 3 4 6 8 10 12 1 bottom 1 top 2 both 1 bottom 1 top 1 top CLM4097333 CLM4097334 The contact blocks are mounted on the top and bottom of the contactor. A bottom contact block is used only for contactors with more than six poles. A leaf spring must be used on 2-6 pole (without a bottom contact block). Two actuators are used on all configurations. See Figure 7. Be sure to use the correct contact block(s). Contactors with more than six poles use two contact blocks. When two are used, always mount the six pole contact block on the top of the contactor. 1 top 1 top Use a screwdriver to install the contact block(s) onto the top and bottom of the contactor. Remove the leaf spring if converting a 2-6 pole contactor to an 8-12 pole contactor. Add a leaf spring if converting an 8-12 pole contactor to a 2-6 pole contactor. Be sure the actuator is in the cavity (roller facing in) before installing the contact block. Tighten the two screws to 10 inch-pounds. Use the manual operating screw to check operation. Figure 7. Contact Blocks Siemens Industry, Inc. 5300 Triangle Parkway, Norcross, GA 30092 Page 5 of 8 Coil Replacement Table K – Coil Kits Coil Kit No. Control Voltage Volts 50/60 Hz CLM4097341 110 - 120 CLM4097342 208 - 240 CLM4097343 265 - 277 CLM4097344 440 - 480 Each coil kit includes a miniature switch. Install this miniature switch (discard the original one) when repairing the CLM contactor. The miniature switch does not need to be changed when installing a new coil due to voltage change on a new unused CLM contactor. The coil assembly is mounted in the center of the contactor base. See Figure 8. 1. 2. Disconnect the coil leads. If changing voltage on a new unused contactor, carefully pull the lugged coil lead off the miniature switch on the right side. Then loosen the terminal screw to disconnect the other coil lead. See Figure 9. Remove the coil assembly. Use a screwdriver (counterclockwise) to remove the two screws in the magnetic frame. Then pull the coil assembly and nameplate straight out. Figure 9. Coil Connections 3. 4. Remove the coil. Slide the coil out the right side of the magnetic frame. Remove the miniature switch. If repairing the contactor, carefully disconnect the two terminal straps from the miniature switch. Remove the small screw securing the miniature switch to the base. Figure 8. Coil Assembly Page 6 of 8 Siemens Industry, Inc. 5300 Triangle Parkway, Norcross, GA 30092 Reassembly 1. 2. Install the new coil in the magnetic frame. Be sure the voltage indicated on the replacement coil is correct. Position the frame with the joint facing the base. Position the new coil with the small hole outward and slide it into the right side of the magnetic frame. Install the coil assembly onto the base. Cam/core fits into the coil. Be sure the magnetic frame is flat against the base. On 2 – 6 pole contactors reinstall and hold the lower actuator while reinstalling the leaf spring and nameplate onto the magnetic frame. The leaf spring is not used on 8 – 12 pole contactors. Reinstall the two screws and tighten them to 10 in-lbs. 3. Install the miniature switch. If repairing the contactor, attach the new miniature switch to the base with the small screw. Do not over tighten. Reconnect the terminal traps onto the miniature switch. 4. Reconnect the coil leads. Connect the lugged coil lead to the miniature switch by carefully aligning the lug and pressing it onto the pushon terminal. Then connect the other coil lead to the closest top screw terminal (under plate). See Figure 9. 5. Manually operate the contactor. See page 4. Use the 8-32 screw to close and open the contactor by pushing it inward and pulling it outward. The action should be smooth, without any binding. If not, recheck alignment of coil assembly. CAUTION: Remove the plastic operating screw ! Trouble-Shooting WARNING: The contactor is energized. Proceed with care! Problem Check Control Voltage Does not close when control station is closed. Measure control voltage between contactor terminals L and O. Does not open when control station is opened. Measure control voltage between contactor terminals L and O. Tries to close or open, but cannot. Measure at least 90% control voltage (coil voltage) between contactor terminals L and C, or L and O. Closes and opens repeatedly. Closes or opens very quickly with excessive noise. – Measure no more than 110% control voltage (coil voltage) between contactor terminals L and C, or L and O. Siemens Industry, Inc. 5300 Triangle Parkway, Norcross, GA 30092 Check Control Station, Wiring, Supply If no voltage is present, check control station contacts, control wiring, supply fuses, and optional accessories. If no voltage is present, check control station contacts, control wiring, supply fuses, and optional accessories. If voltage is low, check control wire size and line run distance; see Table E on page 2. If a transform er used in the control line, make sure it can handle the VA burden required; see Table D on page 2. Check control station for overlapping contacts, and correct. Control stations cannot call on contactor to close and open at the same time. If voltage is high, change control supply or change contactor. Page 7 of 8 Page 8 of 8 409316 B Siemens Energy & Automation, Inc. 3333 Old Milton Pkwy Alpharetta, GA 30005 ">

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Key features
- 2-12 pole contactor
- 20A lighting / 30A general purpose
- UL508 listed
- Mountable in class 49 enclosure kits
- Control modules for different applications
- Auxiliary contact kits available
- Coil replacement kits available
- Contact block replacement kits available
Frequently asked questions
Refer to Table A for the maximum AC voltage and amp ratings for the CLM main contacts (open or closed).
Refer to Table B for the maximum DC voltage and amp ratings for the CLM main contacts (open or closed).
Refer to Table C for withstand current ratings for the CLM contactor (available symmetrical amperes RMS).
Auxiliary contacts can be field installed on the left side of the contactor. Each kit (CLM4097291 or CLM4097292) includes one or two Form C SPDT switches and instructions for installing them.
Each coil kit (CLM4097341-CLM4097344) includes a miniature switch and instructions for installing it. Disconnect the coil leads, remove the coil assembly, remove the coil, and install the new coil. Reconnect the coil leads and manually operate the contactor to ensure proper operation.