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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, MPN 3RT20171AK643MA0. It operates at 120V AC with a 12 A rating and does not include integrated surge suppression.

SKU 3G-OTH-40294

Brand
Siemens
Item
Magnetic Contactor: 3 Poles, 120V AC, 12 A
Category
Safety Contactors
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Technical Specifications

Siemens
Manufacturer Part Number
3RT20171AK643MA0
Type
12 A, SIRIUS 3RT Safety Contactors
AC
120V
Integrated Surge Suppression
No
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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, MPN 3RT20171AK643MA0. It operates at 120V AC with a 12 A rating and does not include integrated surge suppression.

Frequently Asked Questions

What is the SIEMENS 3RT20171AK643MA0 safety contactor used for?

The SIEMENS SIRIUS 3RT safety contactor is used for safely switching and isolating motor loads in industrial machinery and safety circuits. It is commonly applied in emergency stop systems, guard door monitoring, and other safety-related automation functions across manufacturing and process industries.

What are the specifications of the SIEMENS 3RT20171AK643MA0 contactor?

This SIEMENS SIRIUS 3RT safety contactor has 3 poles, a 12 A rating, and operates at 120V AC. It does not include integrated surge suppression. The manufacturer part number is 3RT20171AK643MA0. It is designed for IEC applications requiring reliable safety switching.

Where to buy the SIEMENS 3RT20171AK643MA0 safety contactor worldwide?

3G Electric supplies the SIEMENS 3RT20171AK643MA0 safety contactor to customers worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact our team for a quote and lead time on this SIRIUS 3RT series component.

How to select the right SIEMENS safety contactor for my application?

To select the correct SIEMENS SIRIUS 3RT safety contactor, match the coil voltage (120V AC for this model), current rating (12 A), and pole count (3 poles) to your motor or load requirements. Verify that the contactor is used in a safety circuit per your machine's risk assessment and applicable standards.

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.

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