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, 9 A - Non-Reversing IEC Contactors
SiemensNon-Reversing IEC Contactors

Siemens Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 9 A

The SIEMENS IEC Power Contactor is a non-reversing contactor with 3 poles and 3 normally open (NO) contacts, rated at 9 A with a 24 V DC coil (MPN 3RT20231BB40). It does not include integrated surge suppression.

SKU 3G-OTH-51197

Brand
Siemens
Item
Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 9 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
3RT20231BB40
Type
9 A
Poles
3
DC Coil
24V
Contacts
3NO
Integrated Surge Suppression
No
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 9 A with a 24 V DC coil (MPN 3RT20231BB40). It does not include integrated surge suppression.

Frequently Asked Questions

What is the SIEMENS 3RT20231BB40 contactor used for?

The SIEMENS 3RT20231BB40 is a non-reversing IEC power contactor used for switching motors, lighting, and other inductive loads in industrial automation and building control systems. It is suitable for applications requiring reliable on/off control of 3-phase circuits up to 9 A.

What are the specifications of the SIEMENS 3RT20231BB40 contactor?

This SIEMENS contactor has 3 poles with 3 normally open (NO) contacts, rated at 9 A, and a 24 V DC coil. It is non-reversing and does not include integrated surge suppression. The manufacturer part number is 3RT20231BB40.

Where to buy the SIEMENS 3RT20231BB40 contactor worldwide?

You can source the SIEMENS 3RT20231BB40 contactor through 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.

How to select the right SIEMENS contactor for a 24 V DC coil application?

For a 24 V DC coil application, ensure the contactor's coil voltage matches your control circuit. The SIEMENS 3RT20231BB40 is a non-reversing, 3-pole contactor rated at 9 A. Verify the load current and voltage, and consider adding external surge suppression if needed, as this model lacks integrated suppression.

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, 9 A, 24V DC Coil (MPN 3RT20231FB40). 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 3RT20231FB40). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: Yes.
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 25 A, 24V DC Coil (MPN 3RT20261BB44). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 25 A, 24V DC Coil (MPN 3RT20261BB44). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 9 A, 24V AC Coil (MPN 3RT20231AC20). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 9 A, 24V AC Coil (MPN 3RT20231AC20). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 17 A, 24V DC Coil (MPN 3RT20251BB44). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 17 A, 24V DC Coil (MPN 3RT20251BB44). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 12 A, 24V DC Coil (MPN 3RT20241BB44). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 12 A, 24V DC Coil (MPN 3RT20241BB44). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 9 A, 24V DC Coil (MPN 3RT20232BB40). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No; Wire Termination Type: Spring Loaded.
Siemens
SIEMENS IEC Power Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 9 A, 24V DC Coil (MPN 3RT20232BB40). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No; Wire Termination Type: Spring Loaded.

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.