Technical data OT16E3 OT16E3 UL & CSA UL & CSA Catalog number 3 pole OT16E3 OT25E3 OT32E3 OT45E3 OT63E3 OT3E3 OT6E3 OT1E3 OT16E3 Approvals 1 2 pole N/A N/A N/A N/A N/A N/A N/A N/A UL98 & EC 3 pole UL58 & EC UL58 & EC UL58 & EC UL58 & EC UL58 & EC UL98 & EC UL98 & EC UL98 & EC UL98 & EC 4 pole UL58 & EC UL58 & EC UL58 & EC UL58 & EC UL58 & EC UL98 & EC UL98 & EC UL98 & EC UL98 & EC General purpose amp rating -4 to 4 C pf =.7.8 A 16 25 4 6 8 3 6 1 125 Max. operating voltage V 6 6 6 6 6 6 6 6 6 Max. horsepower rating/motor FLA current, pf =.4.5 Three phase 2V 28V HP/A 3/1.6 7.5/24.2 1/3.8 15/46.2 2/6. 1/3.8 2/6. 25/75. 3/88. 24V HP/A 5/15.2 7.5/22. 1/28. 15/42. 2/54. 1/28. 2/54. 3/8. 4/14. 48V HP/A 1/14. 15/21. 2/27. 3/4. 4/52. 2/27. 4/52. 5/65. 75/96. 6V HP/A 1/11. 2/22. 25/27. 3/32. 4/41. 3/32. 4/41. 5/52. 1/99. Single phase 12V HP/A 1/16 1.5/2 2/24 2/24. 2/24. 2/24. 3/34. 5/56. 7.5/8 24V HP/A 2/13.2 3/18.7 5/3.8 7.5/4. 1/57.5 5/28. 7.5/4. 15/68. 2/88. Short circuit rating with fuse Fuse type CC ka 1 1-1 - Fuse type J ka 1 1 1 1 1 1 1 1 5 5 5 1 Fuse type T ka 1 1 1 1 1 1 1 1 5 5 5 Fuse type RK1 ka 1 1 1 Fuse type RK5 ka 5 5 5 5 5 5 1 5 1 5 Fuse type L ka Fuse type H ka 5 5 Maximum fuse size A 3 6 4 3 6 4 3 6 4 1 15 1 15 6 15 15 2 Short circuit rating with MCCB ka 25 Endurances Min. Electrical endurance, pf =.75.8 operation cycles 6 6 6 6 6 6 6 6 6 Min. Electrical endurance, pf =.4.5 operation cycles 1 1 1 1 1 2 2 2 2 Mechanical endurance operations 2, 2, 2, 2, 2, 2, 2, 2, 16, Physical characteristics Weight, 3 pole lb.24.24.24.59.59.79.79.79 2.42 4 pole lb.33.33.33.77.77 1.1 1.1 1.1 2.86 Dimension, 3 pole H in 2.68 2.68 2.68 3.6 3.6 3.94 3.94 3.94 5. W in 1.38 1.38 1.38 2.7 2.7 2.76 2.76 2.76 4.96 D in 2.2 2.2 2.2 2.85 2.85 2.95 2.95 2.95 2.93 Shaft set screw tightening torque lb. in. 8.9 8.9 8.9 8.9 8.9 8.9 8.9 8.9 8.9 Shaft size square in.2 x.2.2 x.2.2 x.2.2 x.2.2 x.2.2 x.2.2 x.2.2 x.2.24 x.24 mm 5 x 5 5 x 5 5 x 5 5 x 5 5 x 5 5 x 5 5 x 5 5 x 5 6 x 6 Switch operating torque for lb. in. 8.8 8.8 8.8 1.5 1.5.5.5.5 52.5 rotary 3 pole Terminal lug kits Not required Not required Not required Not required Not required Not required Not required Not required Not required Wire range AWG #18 8 #18 8 #18 8 #14 1 #14 1 #14 4 #14 4 #8 1/ #8 1/ Torque: Wire tightening lb. in. 7 7 7 18 18 55 55 55 7 Lug mounting lb. in. ntegral ntegral ntegral ntegral ntegral ntegral ntegral ntegral ntegral Auxiliary contacts OA1G OA1G OA1G OA1G OA1G OA1G OA1G OA1G OBEA NEMA ratings, AC A6 A6 A6 A6 A6 A6 A6 A6 A6 AC rated voltage VAC 6 6 6 6 6 6 6 6 6 AC thermal rated current A 1 1 1 1 1 1 1 1 1 AC maximum volt-ampere making VA 72 72 72 72 72 72 72 72 72 AC maximum volt-ampere breaking VA 72 72 72 72 72 72 72 72 72 NEMA ratings, DC R3 R3 R3 R3 R3 R3 R3 R3 P6 DC rated voltage VDC 3 3 3 3 3 3 3 3 6 DC thermal rated current A 1 1 1 1 1 1 1 1 5 DC maximum make-break VA 28 28 28 28 28 28 28 28 138 Torque: Wire tightening lb. in 7 7 7 7 7 7 7 7 7 Wire range AWG #18 14 #18 14 #18 14 #18 14 #18 14 #18 14 #18 14 #18 14 #22 14 1 UL Listed are also CSA Approved. 2 UL98 overload test, 5 operations, pf.4.5 at 2x FLA. 3 Multi-tap lug available, please see pg..24. 4 Fuse size 7A for RK5 Spec Tech ndustrial 23 Vest Ave. Valley Park, MO 6388 Phone: 888 SPECTECH Fax: 636 537-145 www.spectechind.com.4 Low Voltage Products & Systems AC 1-11/3 ABB nc. 888-385-1221 www.abb-control.com
Technical data OETL-NF2 OETL-NF315 UL & CSA UL & CSA Catalog number 3 pole OETL-NF2A OETL-NF4 OETL-NF6A OETL-NF8A OETL-NF12 OETL-NF16 OETL-NF2 OETL-NF315 5 Approvals 1 2 pole UL98 & EC UL98 & EC UL98 & EC UL98 & EC UL98 & EC UL98 & EC UL98 & EC EC 3 pole UL98 & EC UL98 & EC UL98 & EC UL98 & EC UL98 & EC UL98 & EC UL98 & EC EC 4 pole EC UL98 & EC UL98 & EC EC EC EC EC EC General purpose amp rating -4 to 4 C pf =.7.8 A 2 4 6 8 12 16 2 315 Max. operating voltage V 6 6 6 6 6 6 48 Max. horsepower rating/max. motor FLA current, pf =.4.5 Three phase 2 28V HP/A 6/16. 1/273. 15/396. 2/528. 24V HP/A 75/192. 125/312. 2/48. 25/62. 48V HP/A 15/18. 25/32. 4/477. 5/59. 6V HP/A 2/192. 35/336. 5/472. 6/576 Single phase 12V HP/A 24V HP/A Short circuit rating with fuse Fuse type CC ka Fuse type J ka 1 1 1 Fuse type T ka 1 1 1 Fuse type RK1 ka Fuse type RK5 ka 1 1 1 Fuse type L ka 1 1 1 1 Fuse type H ka Maximum fuse size A 6 2 6 6 12 12 2 2 Short circuit rating with MCCB ka 25 5 5 5 5 65 65 Endurances Min. Electrical endurance, pf =.75.8 operation cycles 6 1 1 5 5 5 5 4 Min. Electrical endurance, pf =.4.5 operation cycles 2 2 2 2 2 2 2 2 Mechanical endurance operations 16, 1, 1, 1, 1, 6 6 6 Physical characteristics Weight, 3 pole lb 6.61 13.66 13.66 35.9 38.55 127.7 127.7 127.7 4 pole lb 8.15 16.74 16.74 45.15 49.56 149.7 149.7 149.7 Dimension, 3 pole H in 6.38 8.78 8.54 14.65 14.65 21.5 21.5 21.5 W in 8.5 1.24 11.69 14.25 14.25 18.11 18.11 18.11 D in 4.57 5.12 5.12 4.92 4.92 1.67 1.67 1.67 Shaft set screw tightening torque lb. in. Shaft size square in.31 x.31.47 x.47.47 x.47.47 x.47.47 x.47.47 x.47.47 x.47.47 x.47 mm 8 x 8 12 x 12 12 x 12 12 x 12 12 x 12 12 x 12 12 x 12 12 x 12 Switch operating torque for rotary 3 pole lb. in. 71.5 184 184 184 184 438 438 438 Terminal lug kits OZXA-25 OZXA-26 OZXA-27 OZXA-3 OZXA-28 OZXA-28 OZXA-28/2 OZXA-28/2 Wire range AWG #6-3kcmil 3 #2-6kcmil (2)#2-6kcmil (2)#2-6kcmil (4)#2-6kcmil (4)#2-6kcmil (8)#2-6kcmil (8)#2-6kcmil Torque: Wire tightening lb. in. 375 5 5 375 375 375 375 375 Lug mounting lb. in. 23 48 48 23 23 23 23 23 Auxiliary contacts OZXK- OZXK- OZXK- OZXK- OZXK- OZXK- OZXK- OZXK- NEMA ratings, AC A6 A6 A6 A6 A6 A6 A6 A6 AC rated voltage VAC 6 6 6 6 6 6 6 6 AC thermal rated current A 1 1 1 1 1 1 1 1 AC maximum volt-ampere making VA 72 72 72 72 72 72 72 72 AC maximum volt-ampere breaking VA 72 72 72 72 72 72 72 72 NEMA ratings, DC P6 P6 P6 P6 P6 P6 P6 P6 DC rated voltage VDC 6 6 6 6 6 6 6 6 DC thermal rated current A 5 5 5 5 5 5 5 5 DC maximum make-break VA 138 138 138 138 138 138 138 138 Torque: Wire tightening lb. in 7 7 7 7 7 7 7 7 Wire range AWG #22 #14 #22 #14 #22 #14 #22 #14 #22 #14 #22 #14 #22 #14 #22 #14 1 UL Listed are also CSA Approved. 2 UL98 overload test, 5 operations, pf.4.5 at 2x FLA. 3 Multi-tap lug available, please see pg..24. 4 Fuse size 7A for RK5 5 EC rated only. Low Voltage Products & Systems.41 ABB nc. 888-385-1221 www.abb-control.com AC 1-11/3
Technical data OT16E3 OT16E3 EC EC Catalog number 3 pole OT16E3 OT25E3 OT32E3 OT45E3 OT63E3 OT3E3 OT6E3 OT1E3 OT16E3 Rated insulation and operation 4 C voltage, AC2 and DC2 V 75 75 75 75 75 75 75 75 75 Rated impulse withstand voltage kv 8 8 8 8 8 8 8 8 12 Rated thermal current, th AC 2/DC 2 open 1 A 25 32 4 63 8 4 63 115 2 4 C enclosed A 25 32 4 63 8 4 63 115 16 6 C enclosed A 25 32 4 63 8 4 63 115 16 Rated operational currents AC 21A 5V A 16 25 4 63 8 4 63 1 16 69V A 16 25 4 63 8 4 63 1 16 1V A AC 22A 5V A 16 25 4 63 8 4 63 1 16 69V A 16 25 4 63 8 4 63 1 16 1V A AC 23A 415V A 16 2 23 45 75 4 63 8 135 Rated operational currents/poles 5V A 16 2 23 45 58 4 6 6 125 69V A 1 11 12 2 2 4 4 4 8 1V A DC21A 48V A 16/1 25/1 32/1 45/1 63/1 4/1 63/1 1/1 16/1 11V A 16/2 25/2 32/2 45/2 63/2 4/2 63/2 1/2 16/1 22V A 16/3 25/3 32/3 45/4 63/4 4/4 63/4 1/4 16/2 44V A 16/4 25/6 32/6 3 3 3 3 3 16/3 75V A 16/8 25/8 32/8 3 3 3 3 3 16/4 DC22A 48V A 16/1 25/1 32/1 45/1 63/1 4/1 63/1 1/1 16/1 11V A 16/2 25/2 32/2 45/2 63/2 4/2 63/2 1/2 16/1 22V A 16/3 25/3 32/4 45/4 63/4 4/4 63/4 63/4 16/2 44V A 16/6 25/8 3 3 3 3 3 3 16/3 75V A 16/8 25/8 3 3 3 3 3 3 3 DC23A 48V A 16/1 25/1 32/1 45/1 63/1 4/1 63/1 1/1 16/1 11V A 16/2 25/2 32/2 45/2 63/2 4/2 63/2 1/2 16/1 22V A 16/4 25/4 32/4 45/4 63/4 4/4 63/4 63/4 16/2 44V A 1/4 3 3 3 3 3 3 3 16/3 75V A 16/8 3 3 3 3 3 3 3 3 Rated operational power AC23A 23V kw 3 4 5.5 11 22 7.5 11 22 45 4/415V kw 7.5 9 11 22 37 15 18.5 37 75 5V kw 7.5 9 11 22 37 15 18.5 37 75 69V kw 7.5 9 11 15 18.5 15 15 37 75 Short-circuit current ka 5 5 5 5 5 5 5 5 1 with back-up fuses of size A 25 32 4 63 8 1 1 1 2 2 poles 3 poles 4 poles 1 The ambient air temperature does not exceed +4 C and its average over a period of 24 hours does not exceed +35 C according to EC 947. 2 EC 947-3, utilization category B, infrequent operation. 3 Not available at time of printing, please consult factory..42 Low Voltage Products & Systems AC 1-11/3 ABB nc. 888-385-1221 www.abb-control.com
Technical data OETL-NF2 OETL-NF315 EC EC Catalog number 3 pole OETL-NF2A OETL-NF4 OETL-NF6A OETL-NF8A OETL-NF12 OETL-NF16 OETL-NF2 OETL-NF315 Rated insulation and operational 4 C voltage, AC2 and DC2 V 1 1 1 1 1 1 1 1 Rated impulse withstand voltage kv 12 12 12 8 8 8 8 8 Rated thermal current, th AC 2/DC 2 open 1 A 63 8 125 16 25 25 315 4 C enclosed A 27 63 72 125 16 23 23 26 6 C enclosed A 22 5 6 1 125 195 195 23 Rated operational currents AC 21A 5V A 25 63 8 125 16 25 2 25 2 315 2 69V A 25 63 8 125 16 25 2 25 2 315 2 1V A 25 63 63 AC 22A 5V A 25 63 8 125 16 16 2 16 2 16 2 69V A 25 63 8 1V A 25 4 4 AC 23A 415V A 25 63 72 8 8 8 2 8 2 8 2 Rated operational currents/poles 5V A 25 58 6 8 8 8 2 8 2 8 2 69V A 25 35 35 1V A 125 2 2 DC21A 48V A 25/2 63/2 8/2 125/2 16/2 25/2 25/2 315/2 11V A 25/2 63/2 8/2 125/2 16/2 25/2 25/2 315/2 22V A 25/2 63/2 8/2 125/2 16/2 25/2 25/2 315/2 44V A 25/3 63/3 8/3 125/3 16/3 25/3 25/3 315/2 75V A 25/4 DC22A 48V A 25/2 63/2 8/2 125/2 16/2 25/2 25/2 315/2 11V A 25/2 63/2 8/2 125/2 16/2 25/2 25/2 315/2 22V A 25/2 63/2 8/2 125/2 16/2 25/2 25/2 315/2 44V A 25/3 63/3 8/3 75V A 25/4 DC23A 48V A 25/2 63/2 11V A 25/2 63/2 22V A 25/2 63/2 44V A 25/3 75V A 25/4 Rated operational power AC23A 23V kw 75 18 2 25 25 25 25 25 4/415V kw 132 315 355 4 4 4 4 4 5V kw 16 355 4 45 45 45 45 45 69V kw 2 355 355 Short-circuit current ka 1 1 1 5/5 4 5/5 4 5/63 4 5/63 4 5/63 4 with back-up fuses of size A 4 8 8 2 poles 3 poles 4 poles 1 The ambient air temperature does not exceed +4 C and its average over a period of 24 hours does not exceed +35 C according to EC 947. 2 EC 947-3, utilization category B, infrequent operation. 3 Not available at time of printing, please consult factory. 4 69V / 5V Low Voltage Products & Systems.43 ABB nc. 888-385-1221 www.abb-control.com AC 1-11/3
Technical data OT16E3 OT16E3 EC EC Catalog number 3 pole OT16E3 OT25E3 OT32E3 OT45E3 OT63E3 OT3E3 OT6E3 OT1E3 OT16E3 Rated voltage, Ue V/V 415/69 415/69 415/69 415/69 415/69 415/69 415/69 415/69 5/69 Rated conditional short-circuit current ka 5 5 5 5 5 5 5 5 1/5 Max. allowed fuse size, type OFAA A 25 32 4/32 63/5 8 1 1 1 2 Max. allowed cut-off current, peak value ka 6.5/4 6.5/4 6.5/4 8.3/6.7 11 18/1 18/1 18/1 3/25 Rated short-circuit making capacity, prospective peak value, cm ka.7.7.7 1.4 1.4 3.6 3.6 3.6 12 Rated short time withstand current, RMS l cw.2s ka 7 RMS l cw 1.s ka.5.5.5 1 1 2.5 2.5 2.5 4 AC breaking capacity pf =.35 415V A 128 16 184 24 34 32 54 64 18 5V A 128 16 184 24 256 32 48 48 1 69V A 8 88 96 16 16 32 32 32 64 DC breaking capacity/poles L/R = 15ms, 3 pole 48V A 64/1 1/1 128/1 18/1 252/1 16/1 252/1 4/1 64/1 11V A 64/2 1/2 128/2 18/2 252/2 16/2 252/2 4/2 64/1 22V A 64/3 1/4 128/4 18/4 18/4 16/4 252/4 252/4 64/2 44V A 1 1 1 1 1 1 1 1 64/3 75V A 1 1 1 1 1 1 1 1 1 Capacitor ratings 4/415V kvar 1 1 1 1 1 1 1 1 1 Physical characteristics Electrical endurance at rated operational current, pf =.65 operation cycles 3 3 3 3 3 3 3 3 1 Mechanical endurance operations 2, 2, 2, 2, 2, 2, 2, 2, 16, Weight 3 pole kg.11.11.11.27.27.36.36.36 1.1 4 pole kg.15.15.15.35.35.5.5.5 1.3 Dimension 3 pole H mm 68 68 68 91.5 91.5 1 1 1 127 W mm 35 35 35 52.5 52.5 7 7 7 126 D mm 56 56 56 72.5 72.5 75 75 75 74.5 Power loss per pole W.3.6 1 1.4 2.8 1 1.6 4 6.5 Shaft size square mm 5 X 5 5 x 5 5 x 5 5 x 5 5 x 5 5 x 5 5 x 5 5 x 5 6 x 6 Switch operating torque for rotary 3 pole Nm 1 1 1 1.2 1.2 2 2 2 6 Suitable conductor cross section Cu mm2.75 1.75 1.75 1 1.5 25 1.5 25 1.5 25 1.5 25 1 7 1 7 Bolt size Auxiliary contacts OA1G OA1G OA1G OA1G OA1G OA1G OA1G OA1G OBEA Ratings according to EC 947-5-1 Rated voltage, Ui VAC 69 69 69 69 69 69 69 69 69 Thermal current, th A 16 16 16 16 16 16 16 16 1 AC12/DC12 e, A Ue = 12V A 8/ 125V A /1.1 24V A 6 2 6 2 6 2 6 2 6 2 6 2 6 2 6 2 6/ 25V A /.55 4V A 4 2 4 2 4 2 4 2 4 2 4 2 4 2 4 2 4/ 415V A 4/ 44V A /.31 48V A 3/ 5V A 3/.27 6V A /.2 69V A 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2/ 1 Not available at time of printing, please consult factory. 2 AC15, according to EC947-5-1. 2 poles 3 poles 4 poles.44 Low Voltage Products & Systems AC 1-11/3 ABB nc. 888-385-1221 www.abb-control.com
Technical data OETL-NF2 OETL-NF315 EC EC Catalog number 3 pole OETL-NF2A OETL-NF4 OETL-NF6A OETL-NF8A OETL-NF12 OETL-NF16 OETL-NF2 OETL-NF315 Rated voltage, Ue V/V 5/69 5/69 5/69 5/69 5/69 5/69 5/69 5/69 Rated conditional short-circuit current ka 1/5 1/5 1/5 5 5 63/5 63/5 63/5 Max. allowed fuse size, type OFAA A 4 8 8 Max. allowed cut-off current, peak value ka 45/35 7/63 7/63 Rated short-circuit making capacity, prospective peak value, cm 5/69V ka 35 8 8 15 15 14/15 14/15 14/15 Rated short time withstand current, RMS lcw.2s ka 38 38 RMS lcw 1.s ka 8 5 2 5 2 8 2 8 2 8 2 AC breaking capacity pf =.35 415V A 2 54 576 64 64 64 64 64 5V A 2 464 48 64 64 64 64 64 69V A 2 28 28 25 3 25 3 48 4 48 4 48 4 DC breaking capacity/poles L/R = 15ms, 3 pole 48V A 1/2 1 1 1 1 1 1 1 11V A 1/2 1 1 1 1 1 1 1 22V A 1/2 16/2 2/2 19/2 26/2 26/2 26/2 26/2 44V A 1/3 16 2 1 1 1 1 1 75V A 1/4 1 1 1 1 1 1 1 Capacitor ratings 4/415V kvar 11 3 33 1 1 1 1 1 Rated capacitor duty ka 45 5 1 1 1 1 1 Physical characteristics Electrical endurance at rated operational current, pf =.65 operation cycles 1 1 5 5 5 1 5 1 5 1 5 Mechanical endurance operations 16, 1, 1, 1, 1, 6 6 6 Weight 3 pole kg 3. 6.2 6.2 16.3.5 37 37 37 4 pole kg 3.7 7.6 7.6 2.5 22.5 47 47 47 Dimension 3 pole H mm 162 216 216 372 372 546 546 546 W mm 219 26 34 363 363 468 468 468 D mm 92.5 13 13 125 125 271 271 271 Power loss per one pole W 5.5 22 4 4 67 9 9 14 Shaft size square mm 8 x 8 12 x 12 12 x 12 12 x 12 12 x 12 12 x 12 12 x 12 12 x 12 Switch operating torque for rotary 3 pole Nm 8.2 21 21 21 21 5 5 5 Suitable conductor cross section Cu mm 2 Bolt size 1 x 3 12 x 4 12 x 4 12 x 6 12 x 6 12 x 6 12 x 6 12 x 6 Auxiliary contacts OZXK- OZXK- OZXK- OZXK- OZXK- OZXK- OZXK- OZXK- Ratings according to EC 947-5-1 Rated voltage, Ui VAC 69 69 69 69 69 69 69 69 Thermal rated current, th A 1 1 1 1 1 1 1 1 AC12/DC12 e, A Ue = 12V A 8/ 8/ 8/ 8/ 8/ 8/ 8/ 8/ 125V A /1.1 /1.1 /1.1 /1.1 /1.1 /1.1 /1.1 /1.1 24V A 6/ 6/ 6/ 6/ 6/ 6/ 6/ 6/ 25V A /.55 /.55 /.55 /.55 /.55 /.55 /.55 /.55 4V A 4/ 4/ 4/ 4/ 4/ 4/ 4/ 4/ 415V A 4/ 4/ 4/ 4/ 4/ 4/ 4/ 4/ 44V A /.31 /.31 /.31 /.31 /.31 /.31 /.31 /.31 48V A 3/ 3/ 3/ 3/ 3/ 3/ 3/ 3/ 5V A 3/.27 3/.27 3/.27 3/.27 3/.27 3/.27 3/.27 3/.27 6V A /.2 /.2 /.2 /.2 /.2 /.2 /. 2 /.2 69V A 2/ 2/ 2/ 2/ 2/ 2/ 2/ 2/ 1 Not available at time of printing, please consult factory. 2 Maximum distance between busbar support and switch terminal 7mm. 3 pf.95. 4 pf.65. 5 EC 947-3, utilization category B, infrequent operation. 2 poles 3 poles 4 poles Low Voltage Products & Systems.45 ABB nc. 888-385-1221 www.abb-control.com AC 1-11/3
Selecting per NEC & EC Selecting per NEC Article 43 of the US National Electric Code includes two methods for properly sizing disconnect : 1. Single motor application A properly sized disconnect switch for a single motor will: a) have an ampere rating greater than or equal to 115 percent of the rated motor full load current; or, b) have a HP rating greater than or equal to the rated motor HP (at applied voltage) if the disconnect switch under consideration is HP rated. 2. Combination load application A properly sized disconnect switch for a combination load will be selected by adding all the simultaneous individual loads in the circuit under consideration. Using motor nameplate information, load information, and tables from section 43 of the NEC, determine one equivalent full load current and one equivalent locked rotor current. The equivalent locked rotor current can be used with table 43-151 to determine an equivalent HP rating. Select a disconnect switch: a) greater than or equal to 115 percent of the equivalent full load current; and, b) greater than or equal to the equivalent HP rating. Selecting per EC Utilization categories Nature of current Utilization category Typical applications Frequent operation nfrequent operation AC-2A AC-2B Connecting and disconnecting under no-load conditions AC-21A AC-21B Switching of resistive loads including moderate overloads (PF >.95) Alternating current AC-22A AC-22B Switching of mixed resistive and inductive loads, including moderate overloads (PF >.65) AC-23A AC-23B Switching of motor loads or other highly inductive loads (PF >.45 below 1A; PF >.35 above 1A) DC-2A DC-2B Connecting and disconnecting under no-load conditions DC-21A DC-21B Switching of resistive loads including moderate overloads (L/R < 1ms) Direct current DC-22A DC-22B Switching of mixed resistive and inductive loads, including moderate overloads e.g., shunt motors (L/R < 2.5ms) DC-23A DC-23B Switching of highly inductive loads e.g., series motors (L/R < 15ms) Mechanical endurance Number of operations Number of operations 1A 1, 2 315A 8 16 >315A 2 4 Category AC-23 includes occasional switching of individual motors. The switching of capacitors of tungsten fi lament lamps shall be subject to agreement between manufacturer and user..46 Low Voltage Products & Systems AC 1-11/3 ABB nc. 888-385-1221 www.abb-control.com
Use of UL98 & UL58 s According to NEC Article 43 To supply UL98 Feeder Circuit Motor feeder Motor feeder short circuit and ground fault protection Motor disconnecting means (NEC 43.11-43.113) UL98 Non-Fusible Switches OT3, OT6, OT1 OT125, OETL-NF2 thru OETL-NF2 UL98 Fusible Switches OS3, OS6, OS1, OES2 thru OES8 Motor branch-circuit short-circuit protection (NEC 43.51-43.58) Typical control panel Motor controller (NEC 43.81-4.3.91) UL58 Branch Circuit Motor overload protection (NEC 43.31-4.3.44) OSHA Lockout/tagout disconnect (NEC 43.81-43.91) OL UL58 Non-Fusible Switches OT16, OT25, OT32, OT45, OT63 (UL98 can also be applied) Motor M Low Voltage Products & Systems.47 ABB nc. 888-385-1221 www.abb-control.com AC 1-11/3
Definitions AC Alternating current Current that reverses its direction of fl ow twice per cycle. Ambient temperature Temperature of the air surrounding the unit. Amp rating The basic unit of measurement for electric current (columbs / seconds). Conventional thermal current th Value of the current the disconnect switch can withstand with poles in closed position, in free air for an eight hour duty, without the temperature rise of its various parts exceeding the limits specifi ed by the standards. Cycle duration Total time of the on-load + off-load period. DC Direct current Current that fl ows in only one direction. Electrical endurance Number of on-load operating cycles. EC environmental protection type see page.5. Full load amp current FLA The current required by a motor to produce full-load torque at the motor's rated speed. nductive load An electrical load characterized by having signifi cant inrush (5 to 6 times FLA for typical design-b AC induction motors). kw Kilowatts (1 watts) Lockout/Tagout Means of removing power from electrical equipment during inspection, service or repair. Make / Break / Mechanical endurance Number of off-load operating cycles. Poles Means of connection poles using wires or bus bars to increase breaking capacity of load. Power factor The relationship between working power and total power consumed. Power factor measures how effectively electrical power is being used. Rated insulation U i Voltage value which designates the unit and to which dielectric tests, clearance and creepage distances are referred. Rated operating current e Current value stated by the manufacturer and taking into account the rated operating voltage U e, the rated frequency, the rated duty, the utilization category, the electrical contact life and the type of protective enclosure. Rated operating voltage U e Voltage value to which utilization characteristics of the disconnect switch are referred, i.e. phase-to-phase voltage in 3 phase circuits. Rated short circuit making capacity cm The rated shortcircuit making capacity of a disconnect switch, a disconnector or a switch-disconnector is the value assigned to equipment at the rated operational voltage, frequency (if any) and specifi ed power-factor for AC or time constant for DC. t is expressed as the maximum prospective peak current under prescribed conditions. Rated short time withstand current cw The rated shorttime withstand current of a disconnect switch, a disconnector or a switch-disconnector is the value that the equipment can carry without damage, under the test conditions specifi ed in the relevant product standard. The value of the rated shorttime withstand current shall be not less than twelve times the maximum rated operational current unless otherwise stated by manufacturer and the duration of the current shall be 1 s. Resistive load An electrical load characterized by not having any signifi cant inrush current. Short circuit protection coordination Co-ordination types "1" and "2" are defi ned in EC 947-4-1. Type 1 coordination There has to be no discharge of parts beyond the enclosure. Damage to the contactor and the overload is acceptable. Type 2 coordination No damage to the overload relay or other parts has occurred, except that welding of contactor or starter contacts is permitted, if they are easily separated. Time constant Ratio of inductance to the resistance: L/R = mh/ohm = ms. Torque The force that produces rotation. t is commonly measured in pound-feet (lb-ft). Torque applies to such things as motor operations, handle rotations, wire tightening. NEMA environmental protection type see page.49. Volt The unit of electrical potential difference and electromotive force..48 Low Voltage Products & Systems AC 1-11/3 ABB nc. 888-385-1221 www.abb-control.com
NEMA Environmental ratings ntroduction An enclosure is a surrounding case constructed to provide a degree of protection to personnel against accidental contact with the enclosed equipment and to provide a degree of protection to the enclosed equipment against specifi ed environmental conditions. A brief description of the more common types of enclosures used by the electrical industry relating to their environmental capabilities follows. Refer to NEMA Standards Publication for more information regarding applications, features and design tests. ndividual NEMA product Standards Publications or third party certifi cation standards may contain additional requirements for product testing and performance. Definitions pertaining to nonhazardous locations Definitions pertaining to hazardous locations Type 1 Enclosures are intended for indoor use primarily to provide a degree of protection against limited amounts of falling dirt. (NEMA Standard 7-15-1991.) Type 4X Enclosures are intended for indoor or outdoor use primarily to provide a degree of protection against corrosion, windblown dust and rain, splashing water, hose-directed water and damage from external ice formation. (NEMA Standard 1-1-1979) Type 7 Enclosures are intended for indoor use in locations classifi ed as Class, Groups, A, B, C, or D, as defi ned in the National Electrical Code. (NEMA Standard 7-15-1991.) Type 3R Enclosures are intended for outdoor use primarily to provide a degree of protection against rain, sleet and damage from external ice formation. (NEMA Standard 7-15-1991.) Type 12 Enclosures are intended for indoor use primarily to provide a degree of protection against circulating dust, falling dirt, and dripping noncorrosive liquids. (NEMA Standard 7-15-1991.) Type 9 Enclosures are intended for indoor use in locations classifi ed as Class, Groups E, F, or G, as defi ned in the National Electrical Code. (NEMA Standard 7-15-1991.) Legend ndoors Type 4 Enclosures are intended for indoor or outdoor use primarily to provide a degree of protection against windblown dust and rain, splashing water, hose-directed water and damage from external ice formation. (NEMA Standard 1-1-1979.) Type 13 Enclosures are intended for indoor use primarily to provide a degree of protection against dust, spraying of water, oil and noncorrosive coolant. (NEMA Standard 1-1-1979.) X Outdoors Water Dirt/dust Corrosion Low Voltage Products & Systems.49 ABB nc. 888-385-1221 www.abb-control.com AC 1-11/3
P ratings EC Environmental ratings indicate the degree of protection against dust, liquids and impacts. The P degrees of protection are defined by the French standard NFC 2-1. To rate a device's degrees of protection, the letters P are followed by up to three numbers. These numbers are defined as follows: first number second number third number protection against solid objects protection against liquids protection against mechanical impacts P no protection P no protection P no protection 1 protected against solid objects over 5mm (e.g. accidental touch by hands.) 1 protected against vertically falling rain or condensation 1 impact,225 joule 15g falling from 15 cm 2 protected against solid objects over 12 mm (e.g. fi ngers) 2 protected against direct sprays of water up to 15 from vertical 2 impact,375 joule 25g falling from15 cm 3 protected against solid objects over 2.5 mm (tools & wires) 3 protected against sprays to 6 from vertical 3 impact,5 joule 25g falling from 2cm 4 protected against solid objects over 1mm (small tools & small wires) 4 protected against water sprayed from all directions 5 impact 2, joule 5g falling from 4 cm 5 protected against dust (no harmful deposit) 5 protected against low pressure jets of water from all directions 7 impact 6, joule 1.5kg falling from 4 cm 6 totally protected against dust 6 protected from strong jets of water (e.g. for use on ship decks) 9 impact 2, joule 5 kg falling from 4 cm 7 protected against the effects of immersion between 15cm and 1m.5 Low Voltage Products & Systems AC 1-11/3 ABB nc. 888-385-1221 www.abb-control.com
Auxiliary contact timing diagrams OT16 OT1 Legend 3 6 9 O Contacts closing Contacts opening 1 close 4 open 2 s close 5 s open 3 s open 6 s close 3 6 9 OT16, OT25, OT32 Catalog number Auxiliary contact Contact confi guration OA1G1 1 N.O. OT16, OT25, OT32 OA1G1 1 N.C. 1 N.O. & 1 N.C. OA1G1 OA1G1 3 6 9 OT45, OT63 OA1G1 Catalog number Auxiliary contact Contact confi guration OA1G1 OA1G1 1 N.O. OT45, OT63 OA1G1 1 N.C. 1 N.O. & 1 N.C. 3 6 9 OT3, OT6, OT1 Catalog number Auxiliary contact Contact confi guration OA1G1 1 N.O. OT3, OT6, OT1 OA1G1 1 N.C. 1 N.O. & 1 N.C. OA1G1 OA1G1 Low Voltage Products & Systems.51 ABB nc. 888-385-1221 www.abb-control.com AC 1-11/3
Auxiliary contact timing diagrams OT16 OETL-NF2A OT16E3 Catalog number Auxiliary contact Contact configuration OBEA-1 1 N.O. OT16E3 OBEA-1 1 N.C. 1 N.O. & 1 N.C. OBEA-1 OBEA-1 3 6 9 OETL-NF2A Catalog number Auxiliary contact Contact confi guration 3 6 9 OZXK-12 1 N.O. & 1 N.C. OETL-NF2A OZXK-13 2 N.O. & 2 N.C. OZXK-16 4 N.O. & 4 N.C. OZXK 12 OZXK 13 3 6 9.52 Low Voltage Products & Systems AC 1-11/3 ABB nc. 888-385-1221 www.abb-control.com
Auxiliary contact timing diagrams OETL-NF4 OETL-NF315 OETL-NF4 OETL-NF6A Catalog number Auxiliary contact Contact confi guration form C OETL-NF4 OETL-NF6A OZXK-1 OZXK-2 OZXK-3 1 N.O. & 1 N.C. 2 N.O. & 2 N.C. 4 N.O. & 4 N.C. 3 6 9 OZXK-1 OZXK-2 OZXK-3 OETL-NF8A OETL-NF315 Catalog number Auxiliary contact Contact confi guration OZXK-1 1 N.O. & 1 N.C. OETL-NF8A OZXK-2 2 N.O. & 2 N.C. OETL-NF315 OZXK-3 4 N.O. & 4 N.C. 3 6 9 OZXK-1 OZXK-2 OZXK-3 Low Voltage Products & Systems.53 ABB nc. 888-385-1221 www.abb-control.com AC 1-11/3