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Siemens 3RT2037-1KB40 Coupling relay 3 makers 30 kW 690 V AC + varistor Compatible with (relay brand): Siemens Single 1

Electrical contactor for load and control circuits, with three normally open contacts and an auxiliary contact, for example for motor control.
An electrical control panel is open, revealing complex wiring. In the background, it is raining, with water dripping down a window.
Figure of a contactor assembly layout with numbered components. Shows electrical connections, plug terminals, and labels.
Circuit diagram of an electrical system with a contact switch 'U', connections A1+, A2-, 1L1, 3L2, 5L3, 2TT, 4T2, 6T3.
Technical drawing of a rectangular electrical enclosure with various views and detailed dimensional specifications in millimetres.
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Product type
Coupling relay
No. of pins
3-pin
Nominal voltage
690 V AC
Power
30 kW
Connection
Screws
Datasheet (PDF)
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Part number:
Item no:
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1 Piece(s)
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Total (€ 635.00 / piece)
€ 635.00
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Technical specifications

  • Type of voltage: DC
  • Conductor cross-section single or multi-strand: 50 mm²
  • Conductor cross-section for finely-stranded: 35mm²
Packaging type

Single

Product type

Coupling relay

Type

3RT2037-1KB40

Type

S2

No. of pins

3-pin

Contact type

3 makers

Nominal voltage

690 V AC

Control voltage (min.)

24 V DC

Control voltage (max.)

24 V DC

Control voltage range

24 - 24 V DC

Switching voltage (max.)

690 V AC

Permanent current (max.)

65 A

30 kW

Compatible with

Siemens

Compatible with series

Siemens Sirius series

Features

+ varistor

Mounting type

Snap-in

Screw-fit

Connection

Screws

Durability

1000 0000

IP20

Min. temperature

-25 °C

Max. temperature

+60 °C

Width

55 mm

Height

114 mm

Depth

130 mm

Dim

(W x H x D) 55 x 114 x 130 mm

Content

1 pc(s)

RoHS-compliant

Yes

TRUE

30 kW

3

1

1

65 A

80 A

24-24 V

Screw connection

DC

55 A

36.775

UKCA

yes

Documents & Downloads

Datasheet

Datasheet 1745586 Siemens 3RT2037-1KB40 Coupling relay 3 makers 30 kW 690 V AC + varistor Compatible with (relay brand): Siemens Single 1

User & Safety Instructions

User & Safety Instructions 1745586 Siemens 3RT2037-1KB40 Coupling relay 3 makers 30 kW 690 V AC + varistor Compatible with (relay brand): Siemens Single 1

Description

Power contactor, AC-3 40 A, 18.5 kW / 400 V 240 V AC, 60 Hz 4-pole, 2 NO + 2 NC Size S2, Screw terminal !!! Phased-out product !!! Successor is SIRIUS 3RT2

Accessories

(*All information is plus legal VAT)

The necessary accessories are required to use the article as described.

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