Contactors and Contactor Assemblies
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1 s and ssemblies s for Switching Motors RT contactors, -pole Selection and ordering data C operation nsb0058 nsb0706g NSB060g NSB060g RT RT RT RT 2. -1L2-M0 Ratings Utilization category C-2 and C- T u : up to 60 C Operational current I e at Rating of three-phase motors at 50 Hz and C-1 T u : 0 C Operational current I e uxiliary contacts Ident. no. Rated control supply voltage U s Screw connection Cage Clamp connection for coil terminals Design DT Order No. Price DT Order No. Price 00 V 00 V up to NO NC C PG 1 1 unit PG 1 1 unit kg For screwing and snapping onto mm standard mounting rail ) 2 V, 50 Hz } RT 2-1B00 } RT 2-B V, 50 Hz } RT 2-1F00 } RT 2-F00 20 V, 50 Hz } RT 2-1P00 } RT 2-P ) 2 V, 50 Hz } RT 2-1B00 } RT 2-B V, 50 Hz } RT 2-1F00 } RT 2-F00 20 V, 50 Hz } RT 2-1P00 } RT 2-P ) 2 V, 50 Hz } RT 25-1B00 } RT 25-B V, 50 Hz } RT 25-1F00 } RT 25-F00 20 V, 50 Hz } RT 25-1P00 } RT 25-P ) 2 V, 50 Hz } RT 26-1B00 } RT 26-B V, 50 Hz } RT 26-1F00 } RT 26-F00 20 V, 50 Hz } RT 26-1P00 } RT 26-P00 with mounted auxiliary switch block (removable) Terminal designations according to EN ) 22 E V, 50 Hz } RT 2-1B V, 50 Hz } RT 2-1F0 20 V, 50 Hz } RT 2-1P ) 22 E V, 50 Hz } RT 2-1B V, 50 Hz } RT 2-1F0 20 V, 50 Hz } RT 2-1P ) 22 E V, 50 Hz } RT 25-1B V, 50 Hz } RT 25-1F0 20 V, 50 Hz } RT 25-1P ) 22 E V, 50 Hz } RT 26-1B V, 50 Hz } RT 26-1F0 20 V, 50 Hz } RT 26-1P0 with permanently mounted auxiliary switch block 2 ) Terminal designations according to EN ) 22 E V, 50/60 Hz B RT 2-1L2-M ) 22 E V, 50/60 Hz B RT 25-1L2-M ) 22 E V, 50/60 Hz B RT 26-1L2-M0 0.8 Weight approx.. For further voltages, see page /7. For accessories, see page /2. For spare parts, see page /62. For technical data, see page /92, /119. For description, see page /12. For int. circuit diagra, see page /18. For dimension drawings, see page /216. 1) Minimum conductor cross-section mm 2. 2) Further designs/voltages on request. /18 Siemens NS K 2002
2 s and ssemblies s for Switching Motors RT contactors, -pole Selection and ordering data DC operation DC solenoid system nsb0058 NSB0707g NSB060g NSB060g RT 2. -1B. 0 RT 2. -B. 0 RT 2. -1B. RT 2. -1BB-M0 Ratings Utilization category C-2 and C- T u : up to 60 C Operational current I e at Rating of three-phase motors at 50 Hz and C-1 T u : 0 C Operational current I e uxiliary contacts Ident. no. Rated control supply voltage U s Screw connection Cage Clamp connection for coil terminals Design DT Order No. Price DT Order No. Price 00 V 00 V up to NO NC DC V PG 1 1 unit PG 1 1 unit kg For screwing and snapping onto mm standard mounting rail ) 2 } RT 2-1BB0 } RT 2-BB B RT 2-1BM0 } RT 2-BM ) 2 } RT 2-1BB0 } RT 2-BB } RT 2-1BM0 } RT 2-BM ) 2 } RT 25-1BB0 } RT 25-BB } RT 25-1BM0 } RT 25-BM ) 2 } RT 26-1BB0 } RT 26-BB } RT 26-1BM0 } RT 26-BM0 S with mounted auxiliary switch block (removable) Terminal designations according to EN ) 22 E } RT 2-1BB B RT 2-1BM ) 22 E } RT 2-1BB } RT 2-1BM ) 22 E } RT 25-1BB } RT 25-1BM ) 22 E } RT 26-1BB } RT 26-1BM with permanently mounted auxiliary switch block 2 ) Terminal designations according to EN ) 22 E B RT 2-1BB-M ) 22 E B RT 25-1BB-M ) 22 E B RT 26-1BB-M Weight approx. For further voltages, see page /7. For accessories, see page /2. For technical data, see page /96, /119. For description, see page /12. For int. circuit diagra, see page /18. For dimension drawings, see page /216. 1) Minimum conductor cross-section mm 2. 2) Further designs/voltages on request. /22 Siemens NS K 2002
3 s and ssemblies RT1 s ccessories for contactors Selection and ordering data nsb0078 nsb071g NSB060g nsb06g nsb0080 nsb0081g RH F... RH F... RH C... RH C... RH L.. RH M.. For contactors Rated operational current I e /C-15/C-1 at 20 V uxiliary contacts Screw connection Cage Clamp connection Weight approx. Ident. Design DT Order No. Price DT Order No. Price no. NO NC NO NC PG 1 1 unit PG 1 1 unit kg uxiliary switch blocks for snapping onto the front acc. to EN s to S12 1 ) -pole auxiliary switch blocks RT 2, 6 0 } RH F0 } RH F unit RT1. to 1 1 } RH F1 } RH F1 RT1. 7, } RH F22 } RH F22 RT11 0 } RH F0 } RH F0 22 U 2 2 } RH FC22 RH FC22 Single-pole auxiliary switch blocks acc. to EN and EN (1 pack = ) RT1. 2 to 6 1 } RH C } RH C pack RT1. 7, 1 } RH C01 } RH C01 RT11 1 RH CD 1 RH CD01 RT 2, RT1. to RT1. 7, RT11 NS2SYM01 NS2SYM02 NS2SYM05 2-pole auxiliary switch blocks with cable entry from one side Cable entry from above NS2SYM } RH L unit 2 } RH L20 2 } RH L02 Cable entry from below } RH M unit 2 } RH M20 2 } RH M02 Pack. For int. circuit diagra, see page /19. For position of terminals, see page /15. 1) Exception: RT16. /2 Only supplied in packings Siemens NS K 2002
4 s and ssemblies s for Switching Motors RT 2. contactors Technical data RT 2. General data Permissible mounting position The contactors are designed for operation on a vertical mounting surface. C and DC operation Upright mounting position: C operation Standard design DC operation Special design required; also applies to RT K. 0 coupling relays Positions 1 to 16 of the Order No. must be changed to -. In the case of RT 2. -K. -0L0 contactors with extended coil voltage tolerance, positions 1 to 16 of the Order No. are changed to -1L0. dditional charge Mechanical Basic Oper. million endurance Basic unit with snap-on auxiliary switch block cycles million Solid-state compatible aux. switch block 5 million Electrical endurance See page /86 Rated insulation voltage U i (pollution degree ) V 690 Rated impulse withstand voltage U imp kv 6 Safe isolation between coil and main contacts (acc. to DIN VDE 06 Part 1 and 1 [draft 2/89]) Positively driven operation There is positively driven operation if the NC and NO contacts cannot be closed at the same time Positively driven operation for contactors with solid-state compatible auxiliary switch block according to Swiss regulations (SUV) on request. Permissible ambient temperature V 00 RT 2., RT1 2. (removable aux. switch block) RT 2., RT1 2. (permanent aux. switch block) in operation when stored C C Yes, between main contacts and auxiliary NC contacts and within the auxiliary switch blocks acc. to ZH 1/57, IEC , nnex H (draft 17B/996/DC) Yes, between main contacts and auxiliary NC contacts and within the auxiliary switch blocks acc. to ZH 1/57, IEC , nnex H (draft 17B/996/DC), Swiss regulations (SUV) Degree of protection acc. to IEC and DIN IP 20, coil system IP 20 Shock resistance Rectangular pulse C operation g/ 8.2/5 and.9/ DC operation g/ /5 and / Sine pulse C operation g/ 12.5/5 and 7.8/ DC operation g/ 15/5 and / Conductor cross-sections See page /95 Short-circuit protection of contactors without overload RT 2, RT 2, RT 25 RT 26 For short-circuit protection of contactors with overload relays, see Part. For short-circuit protection of weld-free contactors, see Part 5. (overload and short-circuit protection only with RV circuitbreaker). For short-circuit protection of fuseless load feeders, see Part 5. Main circuit Fuse links, utilization category gl/gg NH N, DIZED 5SB, NEOZED 5SE With fuse links acc. to IEC /EN of coord. "1" 1 ) 6 0 of coord. "2" 1 ) 25 Weld-free 2 ) 16 or miniature circuit-breaker with C-characteristic 25 2 (short-circuit current k, type of coordination "1") 1 ) uxiliary circuit Fuse links, utilization category gl/gg DIZED 5SB, NEOZED 5SE (weld-free protection at I k 1 k) or miniature circuit-breaker with C-characteristic (short-circuit current I k < 00 ) 1) ccording to excerpt from IEC (VDE 0660 Part 2): of coordination "1": Destruction of the contactor and the overload relay is permissible. The contactor and/or overload relay must be replaced if necessary. of coordination "2": No damage can be tolerated to the overload relay, but contact welding on the contactor is permitted if the contacts can be easily separated. 2) Test conditions acc. to IEC For RT11 weld-free contactors, see Part 5 (overload and short-circuit protection only with RV circuit-breaker). /92 Siemens NS K 2002
5 s and ssemblies s for Switching Motors RT 2. contactors Technical data Control circuit RT 2. Coil voltage tolerance C/DC U s Power consumption of the coils (with coil in cold state and 1.0 U s ) Standard design For US and Canada C operation Hz 50 50/ closing p.f. closed p.f. DC operation closing = closed W 5. Permissible residual current of the electronics (with 0 signal) C operation DC operation Operating times at U s 1) Break-time = opening time + arcing time C operation closing time opening time DC operation closing time opening time rcing time Operating times at 1.0 U s 1 ) C operation DC operation closing time opening time closing time opening time V V m m V < 6 m x U s 2 V < 16 m x U s /6 0.72/ / / Main circuit Load ratings with C C-1 utilization category, switching resistive load Rated operational currents I e Ratings of three-phase loads 2 ) p.f. = 0.95 (at 60 C) at 0 C up to at 60 C up to at 20 V 00 V Minimum conductor cross-section with I e load at 0 C 60 C C-2 and C- utilization categories Rated operational currents I e Ratings of slipring or squirrel-cage motors at 50 Hz and 60 Hz up to 00 V at 1 V 20 V 00 V 660/ RT 2, RT mm 2 mm RT 2, RT RT 25 Thermal loading capacity s current ) Power loss per conducting path at I e /C- W RT ) The opening times of the NO contacts and the closing times of the NC contacts increase if the contactor coils are protected against voltage peaks (varistor +2 to 5, diode assemblies: 2 to 6 times). 2) Industrial furnaces and electric heaters with resistance heating, for example (higher current input allowed for during heating up). ) cc. to VDE 0660 Part 2. For rated values for various starting conditions, see Part. Siemens NS K 2002 /9
6 s and ssemblies s for Switching Motors RT 2. contactors Technical data RT 2 RT 2 RT 25 RT 26 Main circuit Load ratings with C C- utilization category (at I a = 6 I e ) Rated operational current I e up to 00 V Ratings of squirrel-cage motors at 50 Hz and 60 Hz at 00 V For a contact endurance of approx operating cycles: Rated operational currents I e up to 00 V Ratings of squirrel-cage motors at 50 Hz and 60 Hz at 1 V 20 V 00 V C-5a utilization category, switching gas discharge lamps per main conducting path at 20 V 1 ) Rating per lamp Rated operational current per lamp () uncorrected lead-lag Switching gas discharge lamps with correction, electronic ballast per main conducting path at 20 V Rating per lamp Capacitor (µf) Rated operational current per lamp () Parallel correction With electronic ballast, single lamp With electronic ballast, twin lamp C-5b utilization category, switching incandescent lamps per main conducting path at 20/220 V C-6a utilization category, switching three-phase transformers with inrush n Rated operational current I e up to 00 V ,2 Ratings of three-phase transformers with an inrush of n = 0 or 20. The ratings must be re-calculated for other inrush factors x: 0 P x = P n x at 20 V 00 V C-6b utilization category, switching low-inductance (low-loss, metallized-dielectric) three-phase capacitors Rated operational currents I e up to 00 V Ratings of single capacitors or of capacitor banks (minimum inductance between parallel capacitors 6 µh) at 50 Hz, 60 Hz and at 20 V 00 V kv kv kv kv kvar kvar kvar kvar ) I e /C-1 = (60 C) and with the corresponding minimum conductor cross-section mm 2. /9 Siemens NS K 2002
7 s and ssemblies s for Switching Motors RT 2. contactors Technical data Main circuit Load ratings with DC DC-1 utilization category, switching resistive load (L/R 1 ) Rated operational current I e (at 60 C) DC- and DC-5 utilization categories, shunt and series motors (L/R 15 ) Rated operational current I e (at 60 C) RT 2, RT 2, RT 25 Number of conducting paths connected in series 1 2 up to 2 V 60 V 1 V 220 V 0 V 600 V Number of conducting paths connected in series 1 2 up to 2 V 60 V 1 V 220 V 0 V 600 V RT 26 Operating frequency Operating frequency z in operating cycles per hour C DC C DC s without overload relays No-load operating frequency Dependence of the operating frequency z on the operational current I and the operational voltage U : I e z = z V I U 1.5 for C-1 for C-2 for C- for C- s with overload relays (mean value) Conductor cross-sections Screw connections (1 or 2 conductor connections possible) Main conductor: Solid mm 2 2 ( ); 2 ( ) Finely stranded with end sleeve mm 2 2 ( ); 2 ( ) acc. to IEC 60 97; max. 1 WG conductor connections, solid solid or stranded stranded WG WG WG 2 ( ) 2 (1... ) 1 8 Terminal screws M (Pozidriv size 2) Tightening torque Nm ( lb.in) uxiliary conductor: Solid mm 2 2 ( ); 2 ( ) acc. to IEC 60 97; max. 2 ( ) Finely stranded with end sleeve mm 2 2 ( ); 2 ( ) WG conductor connections, solid or stranded WG 2 ( ); 2 ( ); 1 12 Terminal screws M Tightening torque Nm (7.... lb.in) Cage Clamp connections (1 or 2 conductor connections possible) C/DC uxiliary conductor: Solid mm 2 2 ( ) Finely stranded with end sleeve mm 2 2 ( ) Finely stranded without end sleeve mm 2 2 ( ) WG conductor connections, solid or stranded WG 2 (2... 1) For tool for opening the Cage Clamp connection, see accessories on page /52. n "insulation stop" must be used for conductor cross-sections 1 mm 2, see accessories on page /52. Max. outer diameter of conductor insulation:.6 mm. For information about Cage Clamp connections, see page. C/DC Siemens NS K 2002 /95
8 s and ssemblies RT contactors, -pole s and ssemblies Dimension drawings RT 1 contactors 0, screw connection with surge suppressor, auxiliary switch block and mounted overload relay Lateral clearance from earthed parts = 6 mm 2) uxiliary switch block (also RH NF.. solid-state compatible design) ) Surge suppressor (also RT G00 additional load module) ) Drilling pattern RT 1 contactors 0, Cage Clamp connection with auxiliary switch block RT 2 contactors, RT 2 coupling relays, screw connection with surge suppressor, auxiliary switch blocks and mounted overload relay For size : a = mm at < 20 V a = 7 mm at > 20 V b = DC mm deeper than C 1) uxiliary switch block, laterally mountable 2) uxiliary switch block, mountable on the front, 1, 2 and -pole (also RH FE22 solid-state compatible design) ) Surge suppressor ) Drilling pattern /216 Siemens NS K 2002
9 s and ssemblies RT contactors, -pole s and ssemblies Dimension drawings RT 2 contactors, RT 2 coupling relays, Cage Clamp connection with surge suppressor, auxiliary switch blocks and mounted overload relay For size : a = 0 mm with varistor < 20 V, diode assembly a =.5 mm with varistor > 20 V a = 17 mm with RC element b = DC 15 mm deeper than C 1) uxiliary switch block, laterally mountable 2) uxiliary switch block, mountable on the front (1, 2 and -pole) ) Surge suppressor ) Drilling pattern RT contactors S2, screw connection with surge suppressor, auxiliary switch blocks and mounted overload relay For size S2: a = 0 mm with varistor < 20 V, diode assembly a =.5 mm with varistor > 20 V a = 17 mm with RC element b = DC 15 mm deeper than C 1) uxiliary switch block, laterally mountable 2) uxiliary switch block, mountable on the front (1, 2 and -pole) ) Surge suppressor ) Drilling pattern Siemens NS K 2002 /217
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