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 3RT20381KB40 Non-Reversing IEC Contactor - Non-Reversing IEC Contactors
SiemensNon-Reversing IEC Contactors

Siemens 3RT20381KB40 Non-Reversing IEC Contactor

The SIEMENS IEC Magnetic Contactor is a non-reversing contactor with 3 poles and 3NO contacts, rated at 80 A with a 24V DC coil (MPN 3RT20381KB40). It includes integrated surge suppression.

SKU 3G-OTH-51324

Brand
Siemens
Item
3RT20381KB40 Non-Reversing IEC Contactor
Category
Non-Reversing IEC Contactors
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
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

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Siemens
Manufacturer Part Number
3RT20381KB40
Type
80 A
Poles
3
DC Coil
24V
Contacts
3NO
Integrated Surge Suppression
Yes

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 Magnetic Contactor is a non-reversing contactor with 3 poles and 3NO contacts, rated at 80 A with a 24V DC coil (MPN 3RT20381KB40). It includes integrated surge suppression.

Frequently Asked Questions

What is the SIEMENS IEC Magnetic Contactor 3RT20381KB40 used for?

This non-reversing contactor is used for switching three-phase motors and other inductive loads in industrial automation and HVAC systems. It is rated at 80 A with a 24 VDC coil and includes integrated surge suppression for reliable operation.

What are the specifications of the SIEMENS 3RT20381KB40 contactor?

The SIEMENS IEC Magnetic Contactor (MPN 3RT20381KB40) is a non-reversing, 3-pole device with 3NO contacts, rated at 80 A and a 24 VDC coil. It features integrated surge suppression and is designed for global industrial applications.

Where to buy the SIEMENS 3RT20381KB40 contactor worldwide?

You can source the SIEMENS 3RT20381KB40 contactor through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring a seamless procurement process.

How to install the SIEMENS IEC Magnetic Contactor 3RT20381KB40?

Mount the contactor on a DIN rail or panel, connect the 24 VDC coil to the control circuit, and wire the three-phase power to the main terminals. Ensure the integrated surge suppression is properly grounded. Always follow SIEMENS installation guidelines 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 →

Compatible alternatives & equivalents

Cross-referenced by specification & description
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 51 A, 24V DC Coil (MPN 3RT20361KB40)
Siemens
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 51 A, 24V DC Coil (MPN 3RT20361KB40)
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 65 A, 24V DC Coil (MPN 3RT20371KB40)
Siemens
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 65 A, 24V DC Coil (MPN 3RT20371KB40)
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 80 A, 24V AC Coil (MPN 3RT20381AC20)
Siemens
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 80 A, 24V AC Coil (MPN 3RT20381AC20)
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 41 A, 24V DC Coil (MPN 3RT20351KB40)
Siemens
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 41 A, 24V DC Coil (MPN 3RT20351KB40)
This Siemens non-reversing IEC contactor is rated for 80 A continuous current with a 240V AC coil. It features 3 poles and 3 normally open (NO) contacts, suitable for switching three-phase loads in motor control, lighting, and heating circuits. No integrated surge suppression is included
Siemens
This Siemens non-reversing IEC contactor is rated for 80 A continuous current with a 240V AC coil. It features 3 poles and 3 normally open (NO) contacts, suitable for switching three-phase loads in motor control, lighting, and heating circuits. No integrated surge suppression is included
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 80 A, 208V AC Coil (MPN 3RT20381AM20)
Siemens
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 80 A, 208V AC Coil (MPN 3RT20381AM20)

More from Siemens

View all Siemens parts →
Non-reversing IEC contactor with 3 poles and 3 normally open contacts. Rated at 7 A with a 240V AC coil. No integrated surge suppression. Used for on/off control of motors, lighting, and other loads in control panels, conveyors, and HVAC systems
Siemens
Non-reversing IEC contactor with 3 poles and 3 normally open contacts. Rated at 7 A with a 240V AC coil. No integrated surge suppression. Used for on/off control of motors, lighting, and other loads in control panels, conveyors, and HVAC systems
This non-reversing IEC contactor from Siemens features 3 poles and 3 normally open (NO) contacts, rated for 17 A with a 480V AC coil. It is designed for switching electrical loads such as three-phase motors and resistive loads in industrial automation, motor control centers, and HVAC systems. No integrated surge suppression is included
Siemens
This non-reversing IEC contactor from Siemens features 3 poles and 3 normally open (NO) contacts, rated for 17 A with a 480V AC coil. It is designed for switching electrical loads such as three-phase motors and resistive loads in industrial automation, motor control centers, and HVAC systems. No integrated surge suppression is included
Non-reversing IEC contactor with 4 poles and 4 normally open contacts, rated 16 A. Coil voltage 24 V DC. No integrated surge suppression. Suitable for switching loads in motor control, lighting, and HVAC systems
Siemens
Non-reversing IEC contactor with 4 poles and 4 normally open contacts, rated 16 A. Coil voltage 24 V DC. No integrated surge suppression. Suitable for switching loads in motor control, lighting, and HVAC systems
Non-reversing IEC contactor with 4 poles and 4 normally open contacts, rated 9 A. Coil voltage 24 V DC. Spring-loaded wire termination. Suitable for switching resistive and light inductive loads in motor control and automation systems
Siemens
Non-reversing IEC contactor with 4 poles and 4 normally open contacts, rated 9 A. Coil voltage 24 V DC. Spring-loaded wire termination. Suitable for switching resistive and light inductive loads in motor control and automation systems
This Siemens non-reversing IEC contactor features 3 poles and 3 normally open (NO) contacts, rated at 12 A with a 220V AC coil. It is used for switching and controlling electrical loads in motor control, lighting, and HVAC applications. No integrated surge suppression is included
Siemens
This Siemens non-reversing IEC contactor features 3 poles and 3 normally open (NO) contacts, rated at 12 A with a 220V AC coil. It is used for switching and controlling electrical loads in motor control, lighting, and HVAC applications. No integrated surge suppression is included
This Siemens non-reversing IEC contactor features 3 poles and 3 normally open (NO) contacts, rated for 65 A with a 24V AC coil. It is used for switching three-phase motors and other inductive loads in industrial automation, HVAC, and pump control applications. Integrated surge suppression is not included
Siemens
This Siemens non-reversing IEC contactor features 3 poles and 3 normally open (NO) contacts, rated for 65 A with a 24V AC coil. It is used for switching three-phase motors and other inductive loads in industrial automation, HVAC, and pump control applications. Integrated surge suppression is not included
This non-reversing IEC contactor from Siemens features 3 poles and 3 normally open contacts, rated for 96 A with a 240V AC coil. It is used for switching three-phase motors and other inductive loads in industrial automation, HVAC, and pump control applications. This model does not include integrated surge suppression
Siemens
This non-reversing IEC contactor from Siemens features 3 poles and 3 normally open contacts, rated for 96 A with a 240V AC coil. It is used for switching three-phase motors and other inductive loads in industrial automation, HVAC, and pump control applications. This model does not include integrated surge suppression
This Siemens non-reversing IEC contactor is rated for 51 A with a 240V AC coil. It features 3 poles and 3 normally open (NO) contacts. Suitable for switching motors, lighting, and other industrial loads in applications such as manufacturing, HVAC, and process automation
Siemens
This Siemens non-reversing IEC contactor is rated for 51 A with a 240V AC coil. It features 3 poles and 3 normally open (NO) contacts. Suitable for switching motors, lighting, and other industrial loads in applications such as manufacturing, HVAC, and process automation