1370/1379 Contactors - Connection Guide and Parts List Description The Bulletin 1370 DC Contactors are electromagnetically held contactors specially designed to switch the armature current form the DC Drive module to at shunt wound DC motor. When used with the appropriate control logic design, these contactors can disconnect the motor armature from the DC Drive module when a stop is initiated or in the event of a power failure. The contactors feature a top- wired design with all power connections at the top of the contactor. This document contains the information needed to install, connect and maintain the Bulletin 1370 DC Contactor. WARNING: The National Electric Code (NEC) and local codes outline provisions for safely installing electrical equipment. Installation must comply with specifications regarding wire types, conductor sizes, branch circuit protection and disconnect devices. Failure to do so may result in personal injury and/or equipment damage. CAUTION: Incorrectly applied of installed DC contactors can result in component damage or a reduction in product life. Wiring of application errors, such as improper wire sizing or excessive ambient temperatures may result in a malfunction of these devices. Bulletin 1370 DC Contactors have the following features: Contacts - the double break silver cadmium oxide contacts are weld resistant for improved reliability. Movable contacts are wedge shaped, while the stationary contacts have a unique “fold back” design. On contact opening, this “fold back” design generates a strong magnetic field which quickly throws the arc off the contact surface of the chamber. Coil - The contactor coils are hot pressure molded in thermoset epoxy to protect against mechanical damage and harmful environments. The coil shunt plate is designed to retard the magnetic flux until the voltage applied reaches the “pick up” voltage. Each coil is provided with an exclusive thermal cutout which is designed to open on excessive currents of misapplied voltages. Magnet - The high efficiency magnet has a permanent air gap. Pole face wear cannot affect the air gap and cause magnetic sticking due to residual magnetism. Each magnet lamination is phosphate coated to provide ample resistance to corrosion. Faxback Document # 1570 Web location http://www.ab.com/drives Page 1 of 12 Specifications Table A provides the electrical and environmental specifications for the DC Loop Contactors Table A Contactor Specifications Contact Rating - N.O. Voltage: 56A through 280A - 550V DC maximum, 360A - 500V DC maximum Full Load Steady State Current: 56A contactor - 56A DC maximum 110A contactor - 110A DC maximum 180A contactor - 180A DC maximum 280A contactor - 280A DC maximum 360A contactor - 360A DC maximum Contact Break Current(at 550V DC motor load): 56A contactor - 112A DC maximum 110A contactor - 220A DC maximum 180A contactor - 360A DC maximum 280A contactor - 560A DC maximum 360A contactor - 900A DC maximum Contact Rating - N.C. Voltage: 550V DC maximum (500V DC maximum for 360A) Contact Make Current (at 550V DC motor load): 56A contactor - 112A DC 110A contactor - 220A DC 180A contactor - 360A DC 280A contactor - 560A DC 360A contactor - 900A DC Auxiliary Contact Rating Voltage: 115V AC, 50/60 Hz Continuous Current (all contactors): 10A AC maximum Contact Break Current (all contactors): 6A AC maximum Coil Ratings Voltage (all contactors): 115V AC, 50/60 Hz Operate: Pickup: 75% of nominal (maximum) Dropout: 55% of nominal (maximum) Breakdown Voltage 2,100V RMS (all electrical elements to ground) Ambient Operating Temperature 0 to 65°C (32 to 149°F) Vertical Mounting Orientation Contact Termination Line and Load Terminals for N.O. Contact: 56A contactor - 10-32 x 25/64” screw, 35 lb-in torque 110A contactor - 1/4-28 x 3/8” bolt, 45 lb-in torque 180A contactor - 5/16-24 x 1/2” bolt, 150 lb-in torque 280A contactor - 1/2-13 stud with nut, 400 lb-in torque 360A contactor - 4 lugs-#4 AWG to 500 MCM Dynamic Braking Terminals for N.C. Contact: 56A contactor - 10-32 x 25/64” screw, 35 lb-in torque 110A contactor - 1/4-28 x 3/8” bolt, 45 lb-in torque 180A contactor - 5/16-24 x 1/2” bolt, 150 lb-in torque 280A contactor - 3/8-24 x 5/8 bolt, 240 lb-in torque 360A contactor - 2 lugs-#4 AWG to 500 MCM Coil Termination Captive Pressure Plate for 2 - #12 AWG wires maximum Silver Cadmium Oxide Contact Material Auxiliary Contact with Captive Pressure Plate for 2 - #14 AWG wires maximum Faxback Document # 1570 Web location http://www.ab.com/drives Page 2 of 12 Dimensions NOMINAL DIMENSIONS AND WEIGHTS - NON-REVERSING CONTACTOR In inches (millimeters) and pounds (kilograms) Current Rating Power Catalog A B C D E J Approximate (Continuous) Poles Number Weight 56A 2 - N.O. 1370-DC56 3.56 6.00 4.47 1.38 5.50 #10(0.5) 3.0(1.4) 1 - N.O. (90.4) (152.4) (113.5) (35.0) (139.7) 56A 2 - N.O. 1370-NC56 3.56 6.00 4.47 1.38 5.50 #10(0.5) 3.0(1.4) (90.4) (152.4) (113.5) (35.0) (139.7) 110A 2 - N.O. 1370-DC110 3.94 6.81 4.63 1.58 6.31 #10(0.5) 4.0(1.8) 1 - N.O. (100.1) (173.0) (117.6) (40.1) (160.3) 110A 2 - N.O. 1370-NC110 3.94 6.81 4.63 1.58 6.31 #10(0.5) 4.0(1.8) (100.1) (173.0) (117.6) (40.1) (160.3) 180A 2 - N.O. 1370-DC180 6.13 10.04 6.09 2.75 8.66 3-1/4 12.0(5.4) 1 - N.O. (155.7) (255.0) (154.7) (69.8) (220.0) (6.4) 180A 2 - N.O. 1370-NC180 6.13 10.04 6.09 2.75 8.66 3-1/4 12.0(5.4) (155.7) (255.0) (154.7) (69.8) (220.0) (6.4) 280A 2 - N.O. 1370-DC280 7.00 11.40 7.66 3.16 9.84 3-5/16 22.0(10.0) 1 - N.O. (177.8) (289.6) (194.6) (80.3) (250.0) (7.9) 280A 2 - N.O. 1370-NC280 7.00 11.40 7.66 3.16 9.84 3-5/16 22.0(10.0) (177.8) (289.6) (194.6) (80.3) (250.0) (7.9) 360A 2 - N.O. 1379-DC360 9.50 15.40 7.50 3.50 13.50 3-0.406 45.0(20.5) 1 - N.O. (241.3) (391.2) (190.5) (88.9) (342.9) (10.3) 360A 2 - N.O. 1379-NC360 9.50 15.40 7.50 3.50 13.50 3-0.406 45.0(20.5) (241.3) (391.2) (190.5) (88.9) (342.9) (10.3) Faxback Document # 1570 Web location http://www.ab.com/drives Page 3 of 12 Nominal Dimensions and Weights - Reversing Contactor In inches (millimeters) and pounds (kilograms) Current Power Catalog A B C D E F J Approximate Rating Poles Number Weight (Continuous) 56A 4 - N.O. 1370-RC56 8.00 7.59 4.63 7.09 7.09 3.17 #10(0.5) 8.75(3.9) 2-N.C. (203.2) (192.8) (117.6) (180.1) (180.1) (80.5) 110A 4 - N.O. 1370-RC110 9.06 8.38 4.88 7.88 7.88 4.34 #10(0.5) 11.0(5.0) 2-N.C. (230.1) (212.9) (124.0) (200.2) (200.2) (110.2) 180A 4 - N.O. 1370-RC180 12.88 10.66 6.31 11.81 9.84 _ 4-1/4 30.0(13.6) 2-N.C. (327.2) (270.8) (160.3) (300.0) (250.0) (0.64) 280A 4 - N.O. 1370-RC280 14.84 12.72 7.94 13.78 11.81 _ 4-5/16 47.0(21.3) 2-N.C. (376.9) (323.1) (201.7) (350.0) (300.0) (0.79) 360A 4 - N.O. 1370-RC360 19.25 15.38 8.63 17.00 13.50 _ 90.0(40.9) 2-.406 ➀ 2-N.C. (488.9) (390.6) (219.2) (431.8) (342.9) (10.3) ➀ 360a Contactors Only - Key hole (2 plcs.) at top of contactor is 0.188R, 0.750 Dia. Faxback Document # 1570 Web location http://www.ab.com/drives Page 4 of 12 Unpacking and Inspection Remove all packing material, wedges, or braces form within the contactor. If any part of the equipment will not be installed when it is unpacked, it must be stored in a clean, dry place. The storage temperature must be between - 30°C and +65°C (-22°F and + 149°F) and a humidity range of 5% to 95%, non-condensing, to guard against damage to components. After unpacking, check the material received against the Bill of Lading to assure that the nameplate description of each item agrees with the material ordered. When checking the items received, refer to the Catalog Number Explanations provided in Figures 3 and 4. Inspect the items for physical damage such as cracks in moldings or insulators. 1370 N C 56 First Second Third Fourth Position Position Position Position Current Bulletin No. Type Contactor Rating Letter Description Number Amperes N Non- 56 56 Reversing 110 110 D Non- 180 180 Reversing w/DB 280 280 R Reversing 360 360 w/DB Figure 3 - Contactor Catalog Number Explanation 1370 LG 40 First Second Third Position Position Position Lug Current Bulletin No. Lug Kit Rating Number Amperes 40 40 52 52 56 56 68 68 92 92 104 104 110 110 120 120 140 140 160 160 180 180 204 204 228 228 248 248 268 268 280 280 Figure4-LugKitCatalogNumberExplanation Operation Faxback Document # 1570 Web location http://www.ab.com/drives Page 5 of 12 When the coil is energized, the magnet closes. The contact carrier moves upward into place and closes the power contacts. Movable contact springs are used to provide proper contact seating. Shock absorbing pads are provided in the cover and base assemblies to reduce the impact of pickup and drop-out. Installation The contactor must be vertically mounted in a clean, dry location. Oils, coolants and other debris must be kept from settling on the contactor. The choice of an appropriate NEMA enclosure type for the application is important. Special considerations should also be given to the wire bend radius and wire clearances. WARNING: The contactor must be mounted in a vertical position. Failure to observe this mounting practice will result in improper operation of the contactor and personal injury. Refer to the National Electrical Code and Local Codes for specific installation guidelines. The supplied surge suppressor will reduce noise interference that could adversely affect Drive performance. Install the suppressor on the contactor coil using the instructions provided below. Reversing contactors are supplied with factory installed suppressors on each coil. CAUTION: Component damage may occur if more than 132V AC is applied to the suppressor. Suppressor Installation 1. Loosen coil terminal clamps. 2. Slide surge suppressor onto coil terminals. 3. Place coil circuit conductors between suppressor terminals and coil terminal clamps. 4. Tighten coil terminal clamps securely. Wiring Figure 5 shows the typical wiring diagrams for the DC contactors. Refer to Figures 6 and 7 for specific terminal identification. When wiring Dynamic Braking Resistors, use wire with a current capacity at least 1/2 that of the full load current rating of the motor. IMPORTANT: Consult the National Electrical Code and local codes for specific guidelines on wire size and type for dynamic braking resistor application. All DC Drive module power connections (Keps-nuts) are to be installed to the following torque settings: 1/4 inch bolt - 35 in-lbs. 3/8 inch bolt - 75 in-lbs. 1/2 inch bolt - 150 in-lbs. 3/4 inch bolt - 300 in-lbs. Faxback Document # 1570 Web location http://www.ab.com/drives Page 6 of 12 Faxback Document # 1570 Web location http://www.ab.com/drives Page 7 of 12 Auxiliary Contact Installation Auxiliary contact assemblies can be used on all contactor ratings, 56 through 280 amperes. The N.O. auxiliary contact is designed to be open when the contactor is de-energized. The N.C. auxiliary contact is designed to be closed when the contactor is de-energized. A (1) N.O. auxiliary contact assembly is supplied on the contactor in position P1 for use with the DC Drive module enable function. Reversing contactors have an additional N.O. and N.C. auxiliary contact position P4. The N.C. contact is used to electrically interlock the forward and reverse contactor coil circuits. The N.O. contact is used with the control circuit forward and reverse selection function to prevent changing the direction once the Drive is in operation. Additional auxiliary contact assemblies may be installed in positions P2, P3 and P4 on non-reversing contactors. On reversing 180 and 280 ampere contactors, additional contact assemblies may be installed in all P2 and P3 positions. Placement on 56 and 110 ampere contactors will depend on the type of contact assembly that can be installed in the vacant P2 and P3 positions between the forward and reverse contactors. Installation WARNING: Open and lock-out main supply disconnect and all other power source disconnects to avoid hazard of electrical shock or injury form unintended actuation of controlled equipment. 1. Turn the Drive circuit breaker OFF and remove cabinet power. 2. Align arrows on the reverse side of the contact and locate the tabs. 3. Insert the auxiliary contact, tabs first, into the appropriate position on the side of the contactor. Push, to lock the contact in place. 4. Select the desired terminals and connect the corresponding wires. Replacement Refer to the following steps if replacement of the Auxiliary contact becomes necessary. 1. Turn the Drive circuit breaker OFF and remove cabinet power. 2. Loosen the Coil Cover and pull the auxiliary contact straight out. Maintenance The Bulletin 1370 DC Contactors are constructed such that a minimum amount of maintenance is needed. As a result of normal use, the contacts will eventually begin to deteriorate. Periodic inspection of these contacts should be part of any Drive system preventative maintenance program. If contact inspection reveals severe erosion on the power pole contacts, it is recommended that the power poles (if possible) or contactor be replaced. Replacing the contactor will help reduce the effects of uneven and unequal contact closings. If the contactor has not been used for extended period of time, a brief inspection for mechanical integrity and contact corrosion should be made before use. Faxback Document # 1570 Web location http://www.ab.com/drives Page 8 of 12 Bulletin 1370/1379 Drive Contactor Cross Reference Note and Contactor Renewal Parts The following lists cross reference the catalog number, Mequon part number and the Milwaukee part number for DC contactors. Also included are the renewal parts needed for the contactors. OBSOLETE CONTACTOR CROSS REFERENCE Mequon Catalog Mequon Part Allen-Bradley Number Catalog Number Number * 1379-NC30 101287 202AC-ZOD-X532 1379-NC56 101288 202AC-ZOD-X533 1379-NC110 101289 202AC-ZOD-X534 1379-NC210 101290 202AC-ZOD-X535 1379-DC30 101277 202AC-ZOD-X537 1379-DC56 101278 202AC-ZOD-X538 1379-DC110 101279 202AC-ZOD-X539 1379-DC210 101280 202AC-ZOD-X540 1379-RC30 101281 202AC-ZOD-X557 1379-RC56 101282 202AC-ZOD-X558 1379-RC110 101283 202AC-ZOD-X559 1379-RC210 101284 202AC-ZOD-X560 * NC = Non-Reversing, DC = Dynamic Braking, RC = Reversing CURRENT 1379 CONTACTOR KITS (Includes surge suppressor and instructions) Catalog Number Kit Number Contactor Number 1379-NC360 101246 101291 1379-DC360 102251 101300 1379-RC360 102256 101301 CURRENT CONTACTOR CROSS REFERENCE Catalog Number Old Mequon New Mequon Allen-Bradley Part Number Part Number Part Number 1370-NC56 107753 123142 40411-672-01 1370-NC110 107763 123141 40411-672-02 1370-NC180 107773 123140 40411-672-03 1370-NC280 107783 123139 40411-672-04 1370-NC360 101291 101291 202AC-ZOD-X536 1370-DC56 107748 123146 40411-672-05 1370-DC110 107758 123145 40411-672-06 1370-DC180 107768 123144 40411-672-07 1370-DC280 107778 123143 40411-672-08 1370-DC360 101300 101300 202AC-ZOD-NX12 1370-RC56 113801 123195 40444-616-01 1370-RC110 113802 123196 40444-616-02 1370-RC180 113803 123197 40444-616-03 1370-RC280 113804 123198 40444-616-04 1379-RC360 101301 101301 205AC-NX2 Faxback Document # 1570 Web location http://www.ab.com/drives Page 9 of 12 Contactor Spare Parts List Single Pole N.O. Contact Kit Includes: One each: front and rear stationary contact, contact spring and movable contact. Normally Closed Contact(DB Pole) Kit Includes: Front or rear stationary contact; contact spring, spanner guide, spanner assembly and screws. 56 amp list Part Number Single Pole N.O. Contact Part Kit Number 40410-331-54 Normally Closed Contact (DB Pole) Kit number: 40410-857-01 110 Amp List Single Pole N.O. Contact Part Kit Number 40420-322-52 Normally Closed Contact (DB Pole) Kit number 40420-850-01 180 Amp List Single Pole N.O. Contact Part Kit Number 40430-300-52 Normally Closed Contact (DB Pole) Kit number 40430-850-01 280 Amp List Single Pole N.O. Contact Part Kit Number 40440-325-52 Normally Closed Contact (DB Pole) Kit number 40440-850-01 360 Amp List Single Pole N.O. Contact Part Kit Number Z-34042 Normally Closed Contact (DB Pole) Kit numbers: 40450-319-52 Obsolete: Front Terminal Assembly 40450-320-52 Obsolete: Rear Terminal Assembly 40450-318-52 Obsolete: Moveable Contact Contactor Listing Catalog Number Contactor Size (refer to above for contact kit part number) 1370-NC56, 1370-DC56, 1370-RC56 56 Amp 1370-NC110, 1370-DC110, 1370-RC110 110 Amp 1370-NC180, 1370-DC180, 1370-RC180 180 Amp 1370-NC280, 1370-DC280, 1370-RC280 280 Amp 1370-NC360, 1370-DC360, 1370-RC360 360 Amp AUXILIARY CONTACTS Allen-Bradley Part Number Description Catalog Number 107482 1 N.O. -1 N.C. Bulletin 595-AB 101905 1 N.O. Bulletin 595-A 101242 1 N.C. Bulletin 595-B 115015 2 N.O. Bulletin 595-AA Faxback Document # 1570 Web location http://www.ab.com/drives Page 10 of 12 Cross Reference by Part Number Contactor Part Number Description and Current Rating Spare Parts Reference 101291 1379-NC360 360 Amp List 101300 1379-DC360 360 Amp List 101301 1379-RC360 360 Amp List 123139 1370-NC280 280 Amp List 123140 1370-NC180 180 Amp List 123141 1370-NC110 110 Amp List 123142 1370-NC56 56 Amp List 123143 1370-DC280 280 Amp List 123144 1370-DC180 180 Amp List 123145 1370-DC110 110 Amp List 123146 1370-DC56 56 Amp List 123148 56 amps; 115v coil, w/o DB 56 Amp List 123149 56 amps; 230v coil, w/o DB 56 Amp List 123152 56 amps, 460v coil, w/o DB 56 Amp List 123154 110 amps, 115v coil, w/o DB 110 Amp List 123155 110 amps, 230v coil, w/o DB 110 Amp List 123158 110 amps, 460v coil, w/o DB 110 Amp List 123160 180 amps, 115v coil, w/o DB 180 Amp List 123161 180 amps, 230v coil, w/o DB 180 Amp List 123164 180 amps, 460v coil, w/o DB 180 Amp List 123166 280 amps, 115v coil, w/o DB 280 Amp List 123167 280 amps, 230v coil, w/o DB 280 Amp List 123170 280 amps, 460v coil, w/o DB 280 Amp List 123172 56 amps,115v coil, DB 56 Amp List 123173 56 amps, 230v coil, DB 56 Amp List 123176 56 amps, 460v coil, DB 56 Amp List 123178 110 amps, 115v coil, DB 110 Amp List 123179 110 amps, 230v coil, DB 110 Amp List 123182 110 amps, 460v coil, DB 110 Amp List 123185 180 amps, 230v coil, DB 180 Amp List 123188 180 amps, 460v coil, DB 180 Amp List 123190 280 amps, 115v coil, DB 280 Amp List 123191 280 amps, 230v coil, DB 280 Amp List 123194 280 amps, 460v coil, DB 280 Amp List 123195 1370-RC56 56 Amp List 123196 1370-RC110 110 Amp List 123197 1370-RC180 180 Amp List 123198 1370-RC280 280 Amp List 147703 1800 amps, 100vdc coil, w/o DB C-H Contactor 147704 3000 amps, 100vdc coil, w/o DB C-H Contactor 163440 180 amps, 115v coil, DB 180 Amp List 170858 360 amps, 115v coil, w/o DB 360 Amp List 170861 360 amps, 115v coil, DB 360 Amp List 172002 1250 amps, Siemens Contactor Faxback Document # 1570 Web location http://www.ab.com/drives Page 11 of 12 Cross reference by Description Description and Current Rating Contactor Part Number Spare Parts Reference 56 amps, 230v coil, DB 123173 56 Amp List 56 amps, 460v coil, DB 123176 56 Amp List 56 amps, 460v coil, w/o DB 123152 56 Amp List 56 amps,115v coil, DB 123172 56 Amp List 56 amps; 115v coil, w/o DB 123148 56 Amp List 56 amps; 230v coil, w/o DB 123149 56 Amp List 110 amps, 115v coil, DB 123178 110 Amp List 110 amps, 115v coil, w/o DB 123154 110 Amp List 110 amps, 230v coil, DB 123179 110 Amp List 110 amps, 230v coil, w/o DB 123155 110 Amp List 110 amps, 460v coil, DB 123182 110 Amp List 110 amps, 460v coil, w/o DB 123158 110 Amp List 180 amps, 115v coil, DB 163440 180 Amp List 180 amps, 115v coil, w/o DB 123160 180 Amp List 180 amps, 230v coil, DB 123185 180 Amp List 180 amps, 230v coil, w/o DB 123161 180 Amp List 180 amps, 460v coil, DB 123188 180 Amp List 180 amps, 460v coil, w/o DB 123164 180 Amp List 280 amps, 115v coil, DB 123190 280 Amp List 280 amps, 115v coil, w/o DB 123166 280 Amp List 280 amps, 230v coil, DB 123191 280 Amp List 280 amps, 230v coil, w/o DB 123167 280 Amp List 280 amps, 460v coil, DB 123194 280 Amp List 280 amps, 460v coil, w/o DB 123170 280 Amp List 360 amps, 115v coil, DB 170861 360 Amp List 360 amps, 115v coil, w/o DB 170858 360 Amp List 1250 amps, 172002 Siemens Contactor 1800 amps, 100vdc coil, w/o DB 147703 C-H Contactor 3000 amps, 100vdc coil, w/o DB 147704 C-H Contactor 1370-NC56 123142 56 Amp List 1370-DC56 123146 56 Amp List 1370-RC56 123195 56 Amp List 1370-NC110 123141 110 Amp List 1370-DC110 123145 110 Amp List 1370-RC110 123196 110 Amp List 1370-NC180 123140 180 Amp List 1370-DC180 123144 180 Amp List 1370-RC180 123197 180 Amp List 1370-NC280 123139 280 Amp List 1370-DC280 123143 280 Amp List 1370-RC280 123198 280 Amp List 1379-DC360 101300 360 Amp List 1379-NC360 101291 360 Amp List 1379-RC360 101301 360 Amp List Faxback Document # 1570 Web location http://www.ab.com/drives Page 12 of 12