73NT34EFA

Data sheet US2:73NT34EFA Enclosed soft starter, Controller 3RW44466BC34, Std. duty rating 250HP @460V, Std. duty current rating 315A Control voltage 115Vac Encl. type 4 painted steel, Water/dust tight for outdoors product brand name Class 73 design of the product Enclosed soft starter special product feature Control transformer, built-in overload relay and bypass contactor included. General technical data weight [lb] Height x Width x Depth [in] 202 lb touch protection against electrical shock NA for enclosed products installation altitude [ft] at height above sea level maximum 6560 ft 54 × 36 × 20 in ambient temperature [°F] ● during storage -22 ... +149 °F ● during operation -4 ... +104 °F ambient temperature ● during storage -30 ... +65 °C ● during operation -20 ... +40 °C country of origin USA Power and control electronics manufacturer's article number of soft starter 3RW44466BC34 number of poles for main current circuit 3 design of power semiconductors (thyristors) for soft starter control 3 controlled phases operating range factor supply voltage rated value 0.85 ... 1.1 operating range factor of control voltage rated value 0.85 ... 1.1 operating condition for standard duty Class 10 standard duty (350% of motor FLA for 10 seconds) operating condition for severe duty Class 20 severe duty (350% of motor FLA for 20 seconds) Features and functions ramp-up (soft starting)/ramp-down (soft stop) Yes starting voltage [%] 20 ... 100 % stopping voltage [%] 20 ... 100 % voltage ramp Yes ramp-up time 1 ... 360 s ramp-down time 1 ... 360 s torque control Yes starting torque [%] 20 ... 100 % stopping torque [%] 20 ... 100 % torque limitation [%] 20 ... 200 % ramp time of torque 1 ... 360 s US2:73NT34EFA Page 1/2 1.21.2021 Subject to change without notice © Copyright Siemens adjustable current limitation Yes creep speed in both directions of rotation Yes pump ramp down Yes integrated bypass contact system Yes external isolation contactor No intrinsic device protection Yes overload protection Yes trip class Class 5 / 10 / 15 / 20 / 30 reset function Manual and automatic thermistor motor protection Yes inside-delta circuit Yes breakaway pulse Yes DC braking Yes combined braking Yes motor heating Yes configuration of control input 1 Factory set as START MOTOR configuration of control input 2 programmable configuration of control input 3 programmable configuration of control input 4 Factory set as TRIP RESET configuration of relay output 1 Factory set as ON-TIME MOTOR configuration of relay output 2 programmable configuration of relay output 3 programmable configuration of relay output 4 Factory set as GROUP ERROR display version Graphic display operating measured value display Yes product extension optional human machine interface module Yes type of communication optional With optional Profibus or Profinet error logbook Yes event list Yes slave pointer function Yes trace function Yes number of parameter sets 3 engineering software (Soft Starter ES) Yes disconnector functionality No Contactor size of contactor NA Coil type of voltage of the control supply voltage AC control supply voltage ● at AC at 50 Hz rated value 115 V ● at AC at 60 Hz rated value 115 V Enclosure degree of protection NEMA rating 4 degree of protection NEMA rating of the enclosure NEMA Type 4 design of the housing Dust-tight, watertight & weather proof type of cooling None Mounting/wiring mounting position Vertical fastening method Surface mounting and installation wire length between motor starter and motor maximum 500 m type of electrical connection for supply voltage line-side Box lug tightening torque [lbf·in] for supply 180 ... 195 lbf·in type of connectable conductor cross-sections at line-side at AWG cables single or multi-stranded 3/0 AWG ... 600 MCM (front only) or 250 ... 500 MCM (back only) or 2x 2/0 AWG ... 2x 500 MCM (both front & back) temperature of the conductor for supply maximum permissible 75 °C material of the conductor for supply AL or CU US2:73NT34EFA Page 2/3 1.21.2021 Subject to change without notice © Copyright Siemens type of electrical connection for load-side outgoing feeder Box lug tightening torque [lbf·in] for load-side outgoing feeder 180 ... 195 lbf·in type of connectable conductor cross-sections at AWG cables for load-side outgoing feeder single or multistranded 3/0 ... 600 kcmil (front only) or 250 ... 500 kcmil (back only) or 2x 500 kcmil (both front & back) AWG temperature of the conductor for load-side outgoing feeder maximum permissible 75 °C material of the conductor for load-side outgoing feeder CU type of electrical connection for auxiliary and control circuit screw-type terminals tightening torque [lbf·in] for auxiliary and control contacts with screw-type terminals 7 ... 10 lbf·in temperature of the conductor for auxiliary and control contacts maximum permissible 75 °C material of the conductor for auxiliary and control contacts CU Short-circuit current rating design of the fuse link for short-circuit protection of the main circuit required 10kA@600V (Class H or K); 100kA@600V (Class R, J or L) design of the short-circuit trip Thermal magnetic circuit breaker breaking capacity maximum short-circuit current (Icu) ● at 240 V 100 kA ● at 480 V 100 kA ● at 600 V 0 kA certificate of suitability NEMA ICS 2; UL 508A Further information Industrial Controls - Product Overview (Catalogs, Brochures,…) www.usa.siemens.com/iccatalog Industry Mall (Online ordering system) https://mall.industry.siemens.com/mall/en/us/Catalog/product?mlfb=US2:73NT34EFA Service&Support (Manuals, Certificates, Characteristics, FAQs,...) https://support.industry.siemens.com/cs/US/en/ps/US2:73NT34EFA Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...) http://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=US2:73NT34EFA&lang=en Certificates/approvals https://support.industry.siemens.com/cs/US/en/ps/US2:73NT34EFA/certificate US2:73NT34EFA Page 3/4 1.21.2021 Subject to change without notice © Copyright Siemens US2:73NT34EFA Page 4/5 1.21.2021 Subject to change without notice © Copyright Siemens last modified: US2:73NT34EFA Page 5/5 3/8/2020 1.21.2021 Subject to change without notice © Copyright Siemens