Data Sheet

ManualsBrandsSiemens ManualsAutomation3RT2028-2NF30 Contactor 3 makers 690 V AC 1 pc(s)

Data sheet 3RT2028-2NF30

Power contactor, AC-3 38 A, 18.5 kW / 400 V 1 NO + 1 NC AC (50 -

60 Hz) / DC 95-130 V AC / DC, 3-pole Size S0, Spring-type terminals

Product brand name SIRIUS

Product designation Power contactor

Product type designation 3RT2

General technical data

Size of contactor S0

Product extension

● function module for communication

● Auxiliary switch

Yes

Surge voltage resistance

● of main circuit rated value

6kV

● of auxiliary circuit rated value

6kV

maximum permissible voltage for safe isolation

● between coil and main contacts acc. to EN

60947-1

400V

Protection class IP

● on the front

IP20

● of the terminal

IP20

Shock resistance at rectangular impulse

● at AC

8,3g / 5 ms, 5,3g / 10 ms

3RT2028-2NF30 Subject to change without notice

Page 1/

Summary of content (12 pages)

PAGE 1
Data sheet 3RT2028-2NF30 Power contactor, AC-3 38 A, 18.
PAGE 2
● at DC 10g / 5 ms, 7,5g / 10 ms Shock resistance with sine pulse ● at AC 13,5g / 5 ms, 8,3g / 10 ms ● at DC 15g / 5 ms, 10g / 10 ms Mechanical service life (switching cycles) ● of contactor typical 10 000 000 ● of the contactor with added electronicscompatible auxiliary switch block typical 5 000 000 ● of the contactor with added auxiliary switch block typical 10 000 000 Reference code acc. to DIN 40719 extended according to IEC 204-2 acc. to IEC 750 K Reference code acc.
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— up to 230 V for current peak value n=20 rated value 30.8 A — up to 400 V for current peak value n=20 rated value 30.8 A — up to 500 V for current peak value n=20 rated value 30.8 A — up to 690 V for current peak value n=20 rated value 21 A ● at AC-6a — up to 230 V for current peak value n=30 rated value 20.5 A — up to 400 V for current peak value n=30 rated value 20.5 A — up to 500 V for current peak value n=30 rated value 21.
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● at 1 current path at DC-3 at DC-5 — at 24 V rated value 20 A — at 110 V rated value 2.5 A — at 220 V rated value 1A — at 440 V rated value 0.09 A — at 600 V rated value 0.06 A ● with 2 current paths in series at DC-3 at DC-5 — at 24 V rated value 35 A — at 110 V rated value 15 A — at 220 V rated value 3A — at 440 V rated value 0.27 A — at 600 V rated value 0.
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● at AC-1 maximum 1 000 1/h ● at AC-2 maximum 750 1/h ● at AC-3 maximum 750 1/h ● at AC-4 maximum 250 1/h Control circuit/ Control Type of voltage of the control supply voltage AC/DC Control supply voltage at AC ● at 50 Hz rated value 95 ... 130 V ● at 60 Hz rated value 95 ... 130 V Control supply voltage at DC ● rated value 95 ... 130 V Operating range factor control supply voltage rated value of magnet coil at DC ● initial value 0.7 ● Full-scale value 1.
PAGE 6
Opening delay ● at AC 35 ... 45 ms ● at DC 35 ... 45 ms Arcing time 10 ...
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● for three-phase AC motor — at 200/208 V rated value 10 hp — at 220/230 V rated value 10 hp — at 460/480 V rated value 25 hp — at 575/600 V rated value 25 hp Contact rating of auxiliary contacts according to UL A600 / Q600 Short-circuit protection Design of the fuse link ● for short-circuit protection of the main circuit — with type of coordination 1 required gG: 125A (690V,100kA), aM: 50A (690V,100kA), BS88: 125A (415V,80kA) — with type of assignment 2 required gG: 50A (690V,100kA), aM: 25A (
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Type of electrical connection ● for main current circuit spring-loaded terminals ● for auxiliary and control current circuit spring-loaded terminals ● at contactor for auxiliary contacts Spring-type terminals ● of magnet coil Spring-type terminals Type of connectable conductor cross-sections ● for main contacts — solid 2x (1 ... 10 mm²) — single or multi-stranded 2x (1 ... 10 mm²) — finely stranded with core end processing 2x (1 ... 6 mm²) — finely stranded without core end processing 2x (1 .
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100 FIT ● with low demand rate acc. to SN 31920 Product function Yes ● Mirror contact acc. to IEC 60947-4-1 T1 value for proof test interval or service life acc.
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Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...) http://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RT2028-2NF30&lang=en Characteristic: Tripping characteristics, I²t, Let-through current https://support.industry.siemens.com/cs/ww/en/ps/3RT2028-2NF30/char Further characteristics (e.g. electrical endurance, switching frequency) http://www.automation.siemens.com/bilddb/index.
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3. 3RT2028-2NF30 Page 11/12 4. 5. 6.