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 Magnetic Contactor: 3 Poles, 120V AC, 12 A - Safety Contactors
SiemensSafety Contactors

Siemens Magnetic Contactor: 3 Poles, 120V AC, 12 A

The SIEMENS IEC Magnetic Contactor: 3 Poles is a safety contactor from the SIRIUS 3RT series, with MPN 3RT20241AK643MA0. It operates at 120V AC and 12 A, and does not include integrated surge suppression.

SKU 3G-OTH-40357

Brand
Siemens
Item
Magnetic Contactor: 3 Poles, 120V AC, 12 A
Category
Safety 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
3RT20241AK643MA0
Type
12 A, SIRIUS 3RT Safety Contactors
AC
120V
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 Magnetic Contactor: 3 Poles is a safety contactor from the SIRIUS 3RT series, with MPN 3RT20241AK643MA0. It operates at 120V AC and 12 A, and does not include integrated surge suppression.

Frequently Asked Questions

What is the SIEMENS 3RT20241AK643MA0 safety contactor used for?

The SIEMENS 3RT20241AK643MA0 is a SIRIUS 3RT safety contactor used to safely interrupt power in industrial machinery and automation systems. It is commonly applied in emergency-stop circuits, safety gates, and other functional-safety applications requiring reliable disconnection of 3-phase loads.

What are the specifications of the SIEMENS 3RT20241AK643MA0?

This SIEMENS safety contactor has 3 poles, a coil voltage of 120V AC, and a rated current of 12 A. It is part of the SIRIUS 3RT series and does not include integrated surge suppression. The manufacturer part number is 3RT20241AK643MA0.

Where to buy the SIEMENS 3RT20241AK643MA0 worldwide?

You can source the SIEMENS 3RT20241AK643MA0 safety 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 install the SIEMENS 3RT20241AK643MA0 safety contactor?

Mount the contactor on a DIN rail or panel using the provided slots. Connect the 120V AC control voltage to the coil terminals, and wire the 3-phase load through the main poles. Ensure all safety circuits comply with local codes. Always de-energize before installation.

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 safety 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 Magnetic Contactor: 3 Poles, 120V AC, 17 A, SIRIUS 3RT Safety Contactors (MPN 3RT20251AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: 3 Poles, 120V AC, 17 A, SIRIUS 3RT Safety Contactors (MPN 3RT20251AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Magnetic Contactor: 3 Poles, 120V AC, 25 A, SIRIUS 3RT Safety Contactors (MPN 3RT20261AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: 3 Poles, 120V AC, 25 A, SIRIUS 3RT Safety Contactors (MPN 3RT20261AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Magnetic Contactor: 3 Poles, 120V AC, 9 A, SIRIUS 3RT Safety Contactors (MPN 3RT20161AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: 3 Poles, 120V AC, 9 A, SIRIUS 3RT Safety Contactors (MPN 3RT20161AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Magnetic Contactor: 3 Poles, 120V AC, 38 A, SIRIUS 3RT Safety Contactors (MPN 3RT20281AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: 3 Poles, 120V AC, 38 A, SIRIUS 3RT Safety Contactors (MPN 3RT20281AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Magnetic Contactor: 3 Poles, 120V AC, 32 A, SIRIUS 3RT Safety Contactors (MPN 3RT20271AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: 3 Poles, 120V AC, 32 A, SIRIUS 3RT Safety Contactors (MPN 3RT20271AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Magnetic Contactor: 3 Poles, 24V DC, 12 A, SIRIUS 3RT Safety Contactors (MPN 3RT20241BB443MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: 3 Poles, 24V DC, 12 A, SIRIUS 3RT Safety Contactors (MPN 3RT20241BB443MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.

More from Siemens

View all Siemens parts →
SIEMENS IEC Magnetic Contactor: 3 Poles, 120V AC, 7 A, SIRIUS 3RT Safety Contactors (MPN 3RT20151AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: 3 Poles, 120V AC, 7 A, SIRIUS 3RT Safety Contactors (MPN 3RT20151AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Magnetic Contactor: 3 Poles, 23-26V AC/DC, 150 A, SIRIUS 3RT Safety Contactors (MPN 3RT10556AB363PA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: 3 Poles, 23-26V AC/DC, 150 A, SIRIUS 3RT Safety Contactors (MPN 3RT10556AB363PA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Magnetic Contactor: 3 Poles, 24V DC, 17 A, SIRIUS 3RT Safety Contactors (MPN 3RT20251BB443MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: 3 Poles, 24V DC, 17 A, SIRIUS 3RT Safety Contactors (MPN 3RT20251BB443MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Magnetic Contactor: 3 Poles, 120V AC, 16 A, SIRIUS 3RT Safety Contactors (MPN 3RT20181AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: 3 Poles, 120V AC, 16 A, SIRIUS 3RT Safety Contactors (MPN 3RT20181AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Power Contactor: 3 Poles, 24V DC, 25 A, SIRIUS 3RT Safety Contactors (MPN 3RT20261DB443MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: Yes.
Siemens
SIEMENS IEC Power Contactor: 3 Poles, 24V DC, 25 A, SIRIUS 3RT Safety Contactors (MPN 3RT20261DB443MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: Yes.
SIEMENS IEC Magnetic Contactor: 3 Poles, 110-127V AC/DC, 185 A, SIRIUS 3RT Safety Contactors (MPN 3RT10566AF363PA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: 3 Poles, 110-127V AC/DC, 185 A, SIRIUS 3RT Safety Contactors (MPN 3RT10566AF363PA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Magnetic Contactor: 3 Poles, 120V AC, 12 A, SIRIUS 3RT Safety Contactors (MPN 3RT20171AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
Siemens
SIEMENS IEC Magnetic Contactor: 3 Poles, 120V AC, 12 A, SIRIUS 3RT Safety Contactors (MPN 3RT20171AK643MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: No.
SIEMENS IEC Power Contactor: 3 Poles, 24V DC, 38 A, SIRIUS 3RT Safety Contactors (MPN 3RT20281FB443MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: Yes.
Siemens
SIEMENS IEC Power Contactor: 3 Poles, 24V DC, 38 A, SIRIUS 3RT Safety Contactors (MPN 3RT20281FB443MA0). Key specifications — Brand: SIEMENS; Integrated Surge Suppression: Yes.