Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
Siemens Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 7 A - Non-Reversing IEC Contactors
SiemensNon-Reversing IEC Contactors

Siemens Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 7 A

The SIEMENS IEC Power Contactor is a non-reversing contactor with 3 poles and 3 normally open (NO) contacts, rated at 7 A with a 24 V DC coil (MPN 3RT20151KB42). It features integrated surge suppression for enhanced…

SKU 3G-OTH-52304

Brand
Siemens
Item
Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 7 A
Category
Non-Reversing IEC Contactors
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

Siemens
Manufacturer Part Number
3RT20151KB42
Type
7 A
Poles
3
DC Coil
24V
Contacts
3NO
Integrated Surge Suppression
Yes
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS IEC Power Contactor is a non-reversing contactor with 3 poles and 3 normally open (NO) contacts, rated at 7 A with a 24 V DC coil (MPN 3RT20151KB42). It features integrated surge suppression for enhanced protection. This component is designed for industrial switching applications requiring reliable control of electrical loads.

Frequently Asked Questions

What is the SIEMENS 3RT20151KB42 contactor used for?

The SIEMENS 3RT20151KB42 is a non-reversing IEC power contactor used for industrial switching of electrical loads such as motors, lighting, and heating systems. Its 7 A rating and 24 V DC coil make it suitable for automation and control panels requiring reliable on/off control with integrated surge suppression.

What are the specifications of the SIEMENS 3RT20151KB42 contactor?

This SIEMENS contactor has 3 poles and 3 normally open (NO) contacts, rated at 7 A with a 24 V DC coil. It includes integrated surge suppression for protection. The manufacturer part number is 3RT20151KB42. It is designed for non-reversing applications in industrial control systems.

Where to buy the SIEMENS 3RT20151KB42 contactor worldwide?

You can source the SIEMENS 3RT20151KB42 contactor from 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine Siemens components for industrial applications.

How to install the SIEMENS 3RT20151KB42 contactor?

Mount the SIEMENS 3RT20151KB42 contactor on a DIN rail or panel using the provided clips. Connect the 24 V DC coil to a suitable power supply, ensuring polarity matches. Wire the 3NO contacts according to your load circuit. Always follow Siemens installation guidelines and local electrical codes for safe operation.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks

Siemens Products

3G Electric supplies Siemens non-reversing iec contactors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 7 A, 24V DC Coil (MPN 3RT20152BB41). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No; Wire Termination Type: Spring Loaded.
Siemens
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 7 A, 24V DC Coil (MPN 3RT20152BB41). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No; Wire Termination Type: Spring Loaded.
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 16 A, 24V DC Coil (MPN 3RT20181FB41). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: Yes.
Siemens
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 16 A, 24V DC Coil (MPN 3RT20181FB41). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: Yes.
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 7 A, 24V DC Coil (MPN 3RT20152KB41). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: Yes; Wire Termination Type: Spring Loaded.
Siemens
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 7 A, 24V DC Coil (MPN 3RT20152KB41). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: Yes; Wire Termination Type: Spring Loaded.
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 7 A, 24V DC Coil (MPN 3RT20152KB42). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: Yes; Wire Termination Type: Spring Loaded.
Siemens
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 7 A, 24V DC Coil (MPN 3RT20152KB42). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: Yes; Wire Termination Type: Spring Loaded.
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 7 A, 24V DC Coil (MPN 3RT20152BB42). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No; Wire Termination Type: Spring Loaded.
Siemens
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 7 A, 24V DC Coil (MPN 3RT20152BB42). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No; Wire Termination Type: Spring Loaded.
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 9 A, 24V DC Coil (MPN 3RT20161KB41). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: Yes.
Siemens
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 9 A, 24V DC Coil (MPN 3RT20161KB41). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: Yes.

More from Siemens

View all Siemens parts →
SIEMENS IEC Magnetic Contactor: Non-Reversing, 4 Poles, 4NO Contacts, 16 A, 240V AC Coil (MPN 3RT23271AP60). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: Non-Reversing, 4 Poles, 4NO Contacts, 16 A, 240V AC Coil (MPN 3RT23271AP60). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 25 A, 220V AC Coil (MPN 3RT20261AN20). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 25 A, 220V AC Coil (MPN 3RT20261AN20). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 25 A, 24V DC Coil (MPN 3RT20262BB44). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No; Wire Termination Type: Spring Loaded.
Siemens
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 25 A, 24V DC Coil (MPN 3RT20262BB44). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No; Wire Termination Type: Spring Loaded.
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 12 A, 120V AC Coil (MPN 3RT20172AK62). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No; Wire Termination Type: Spring Loaded.
Siemens
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 12 A, 120V AC Coil (MPN 3RT20172AK62). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No; Wire Termination Type: Spring Loaded.
SIEMENS IEC Magnetic Contactor: Non-Reversing, 4 Poles, 2NO/2NC Contacts, 9 A, 24V DC Coil (MPN 3RT25161BB40). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: Non-Reversing, 4 Poles, 2NO/2NC Contacts, 9 A, 24V DC Coil (MPN 3RT25161BB40). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 17 A, 24V DC Coil (MPN 3RT20252BB40). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No; Wire Termination Type: Spring Loaded.
Siemens
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 17 A, 24V DC Coil (MPN 3RT20252BB40). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No; Wire Termination Type: Spring Loaded.
SIEMENS IEC Power Contactor: Non-Reversing, 4 Poles, 4NO Contacts, 12 A, 12V DC Coil (MPN 3RT23171BA40). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Power Contactor: Non-Reversing, 4 Poles, 4NO Contacts, 12 A, 12V DC Coil (MPN 3RT23171BA40). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 80 A, 208V AC Coil (MPN 3RT20381AM20). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 80 A, 208V AC Coil (MPN 3RT20381AM20). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.