Siemens 3RT2027-2KB40

AC-3 Coupling Relay

1 / 2
Siemens 3RT2027-2KB40 AC-3 Coupling Relay — Contactors & Relays
Manufacturer catalogue image
Siemens 3RT2027-2KB40 AC-3 Coupling Relay — Contactors & Relays
Siemens 3RT2027-2KB40 AC-3 Coupling Relay — Contactors & Relays
Siemens 3RT2027-2KB40 AC-3 Coupling Relay — Contactors & Relays

Product Description

RoHS CompliantLifecycle Status:

The AC-3 coupling relay is a high-performance power contactor designed to handle applications requiring high power levels. With a rating of 15 kW at 400 V, this relay provides reliable and efficient performance in demanding industrial environments. It features 1 NO (Normally Open) and 1 NC (Normally Closed) contacts, making it suitable for a wide range of control applications.

The AC-3 coupling relay is designed to operate at DC 24V, ensuring compatibility with various control systems. It includes an integrated varistor with a 3-pole spring-loaded terminal, providing added protection against voltage surges and transients. The relay's compact size (S0) and spring-type terminal make it suitable for use in PLC outputs, without the need for auxiliary switches.

Send Inquiry
Payment methods:

Offer details

Best offer from:
Trusted supplier — Romania, member since 2023, 1–4 employees
Availability:
1 pc.
On Request
Updated at: 22-08-2026
Condition:
New Surplus
New Surplus - A new, unused, undamaged item without a manufacturer guarantee. The item may come without original packaging or in replacement packaging. If provided, the box may have been opened.
The Seller is responsible for shipping the product and invoicing

Specifications

Brand
Siemens
Modular version
Voltage type for actuating
DC
Rated control supply voltage Us at DC
24 V
Rated operation power NEMA
14.709974999 kW
Rated operation power at AC-3, 400 V
15 kW
Rated operation current Ie at AC-1, 400 V
50 A

Available Offers

(4)
3RT2027-2KB40 Siemens, Contactors & Relays

Siemens

Available:
99 pcs.
In-Stock
Updated at: 08-09-2026
Offer from:
Trusted supplier — Netherlands, member since 2021, 100–499 employees
Warranty:
24 months
3RT2027-2KB40 Siemens, Contactors & Relays

Siemens

Available:
0 pcs.
On Request
Updated at: 07-09-2026
Offer from:
Trusted supplier — Germany, member since 2024
3RT2027-2KB40 Siemens, Contactors & Relays

Siemens

Available:
0 pcs.
On Request
Updated at: 06-09-2026
Offer from:
Trusted supplier — Italy, member since 2021, 10–19 employees
Warranty:
12 months

Access our platform to find more offers

Register now to explore 36 mln offers from verified suppliers worldwide.

  • Compare offers globally
  • Direct supplier contact
  • RFQs, Quotes, and Orders
  • BOM Search
Sign UpFree 14-day trial available
Offer with manufacturer lead time
Directly from the manufacturer - with a confirmed, predictable, and fully transparent delivery time.
Get Quote

Documents

Data Sheet

Datasheet for Siemens 3RT2027-2KB40, including specifications and features.

Download Data Sheet
TracePartsTraceParts

CAD Models

3D CAD model and technical drawings, ready for your design software.

Download CAD Model

Related products

3RT2046-1NB34 Siemens
3RT2046-1NB34
Siemens
power contactor, AC-3 95 A, 45 kW / 400 V 2 NO + 2 NC, 20-33 V AC/DC 3-pole, 3 NO, Size S3 screw terminal integrated varistor
3RT2336-1NP30 Siemens
3RT2336-1NP30
Siemens
Contactor, AC-1, 60 A/400 V/40 °C, S2, 4-pole, 175-280 V AC/DC, with varistor, 1 NO+1 NC, screw terminal
3RT2028-2XF40-0LA2 Siemens
3RT2028-2XF40-0LA2
Siemens
DC-operated traction contactor with a rated current of 38 A and an operational power of 18.5 kW at 400 V, featuring 1 normally open and 1 normally closed auxiliary contact.
3RT2536-1NF30 Siemens
3RT2536-1NF30
Siemens
High-performance AC/DC contactor with integrated terminals for efficient power distribution.
3RT2046-3NP30 Siemens
3RT2046-3NP30
Siemens
This is a power contactor designed for AC-3 95 A, 45 kW / 400 V with 1 NO + 1 NC, operating at 175-280 V AC/DC. It features 3 poles and 3 NO, with a size S3 spring-type terminal and an integrated varistor.
3RT2035-1NB34-3MA0 Siemens
3RT2035-1NB34-3MA0
Siemens
Siemens AC3 18.5KW/400V Power Contactor, 40A, 2NO+2NC, 20-33VAC/DC, with varistor, 3-pole, Size S2, screw terminal Captive auxiliary switch
3RT2536-1NP30 Siemens
3RT2536-1NP30
Siemens
Power contactor, AC-3 50 A, 22 kW / 400 V 2 NO + 2 NC 175-280 V AC/DC varistor, 4-pole size S2 screw terminals 1 NO + 1 NC integrated
3RT2037-3CL24-3MA0 Siemens
3RT2037-3CL24-3MA0
Siemens
Power contactor, AC-3 65 A, 30 kW / 400 V 2 NO + 2 NC, 230 V AC 50/60 Hz, with inserted varistor 3-pole, Size S2, Spring-type terminals Perm. mounted auxiliary switch
3RT2027-1AG24 Siemens
3RT2027-1AG24
Siemens
An AC contactor designed for high power applications with a rating of 15 kW at 400 V and capable of handling 2 NO + 2 NC connections.
3RT2045-1AP04 Siemens
3RT2045-1AP04
Siemens
power contactor, AC-3 80 A, 37 kW / 400 V 2 NO + 2 NC, 230 V AC/50 Hz 3-pole, 3 NO, Size S3 screw terminal
3RT2027-1AL24 Siemens
3RT2027-1AL24
Siemens
Power contactor, AC-3 32 A, 15 kW / 400 V 2 NO + 2 NC, 230 V AC 50/60 Hz, 3-pole Size S0, screw terminals Removable auxiliary switch
3RT2024-1BB44-3MA0 Siemens
3RT2024-1BB44-3MA0
Siemens
Power contactor, AC-3 12 A, 5.5 kW / 400 V 2 NO + 2 NC, 24 V DC 3-pole, Size S0 Screw terminal Captive auxiliary switch

Market insights

AutomaINSIGHTS analytics dashboard

Get real-time analytics and market data to optimize your purchasing decisions for this component and similar products

  • Real-time stock availability data from 700 MRO distributors in Europe and USA
  • Price analysis by condition (new, used, refurbished) with market median prices
  • Critical component availability monitoring to prevent production downtime
  • Inventory optimization insights based on market supply trends
Get Started