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Siemens SIRIUS 3RT Safety Contactor, 16 A, 120V AC, 3-Pole - Safety Contactors
SiemensSafety Contactors

Siemens SIRIUS 3RT Safety Contactor, 16 A, 120V AC, 3-Pole

The SIEMENS IEC Magnetic Contactor is a 3-pole safety contactor from the SIRIUS 3RT series, operating at 120V AC and rated for 16 A. This model (MPN 3RT20181AK643MA0) does not include integrated surge suppression.

SKU 3G-OTH-40384

Brand
Siemens
Item
SIRIUS 3RT Safety Contactor, 16 A, 120V AC, 3-Pole
Category
Safety Contactors
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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
3RT20181AK643MA0
Type
16 A, SIRIUS 3RT Safety Contactors
AC
120V
Integrated Surge Suppression
No

Technical Documents

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

Product Description

The SIEMENS IEC Magnetic Contactor is a 3-pole safety contactor from the SIRIUS 3RT series, operating at 120V AC and rated for 16 A. This model (MPN 3RT20181AK643MA0) does not include integrated surge suppression.

Frequently Asked Questions

What is the SIEMENS 3RT20181AK643MA0 contactor used for?

This SIEMENS SIRIUS 3RT safety contactor is used for reliable switching and isolation in industrial machinery safety circuits. It is commonly applied in emergency stop, guard door monitoring, and two-hand control systems across manufacturing, packaging, and process automation.

What are the specifications of the SIEMENS 3RT20181AK643MA0?

The SIEMENS 3RT20181AK643MA0 is a 3-pole IEC magnetic contactor rated 16 A at 120V AC. It is part of the SIRIUS 3RT safety contactor series and does not include integrated surge suppression. It is designed for safety-related switching applications in industrial control panels.

Where to buy the SIEMENS 3RT20181AK643MA0 worldwide?

3G Electric supplies the SIEMENS 3RT20181AK643MA0 safety contactor to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact our team for a quote and lead time on this genuine Siemens part.

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

Select a SIEMENS SIRIUS 3RT safety contactor based on your load current, coil voltage, and number of poles. For the 3RT20181AK643MA0, verify your circuit requires 16 A at 120V AC and 3 poles. Ensure your safety system design meets applicable standards and that surge suppression is handled externally if needed.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
This Siemens SIRIUS 3RT safety contactor is a 3-pole device rated at 25 A with a 120V AC coil. It is designed for use in industrial control circuits requiring reliable switching and isolation, such as emergency-stop systems, safety gates, and conveyor controls. The contactor does not include integrated surge suppression
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This Siemens SIRIUS 3RT safety contactor is a 3-pole device rated at 25 A with a 120V AC coil. It is designed for use in industrial control circuits requiring reliable switching and isolation, such as emergency-stop systems, safety gates, and conveyor controls. The contactor does not include integrated surge suppression
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IEC magnetic contactor with 3 poles, rated 17 A at 120V AC. Part of the SIRIUS 3RT safety contactor series. Suitable for switching and isolating motors and other loads in industrial machinery and automation systems requiring safety-circuit compliance
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This Siemens SIRIUS 3RT safety contactor is a 3-pole device rated for 16 A at 24 V DC. It is designed for use in safety circuits such as emergency stop and safety gate applications where reliable load disconnection is required. The contactor does not include integrated surge suppression
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IEC magnetic contactor with 3 poles, rated 120V AC and 9 A. Part of the SIRIUS 3RT series for safety applications. No integrated surge suppression. Used for switching motors and loads in industrial machinery, conveyors, and safety circuits requiring reliable isolation and emergency-stop functionality
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This 3-pole safety contactor from the Siemens SIRIUS 3RT series is rated for 120V AC and 38 A. It is designed for use in emergency-stop circuits, safety gates, and conveyor controls to meet functional safety requirements. No integrated surge suppression

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This Siemens safety contactor from the SIRIUS 3RT series has 3 poles and is rated for 120V AC and 7 A. It does not include integrated surge suppression. Typical applications include emergency-stop circuits, safety gates, and machine-safety functions in industrial control systems
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This Siemens safety contactor from the SIRIUS 3RT series has 3 poles and is rated for 120V AC and 7 A. It does not include integrated surge suppression. Typical applications include emergency-stop circuits, safety gates, and machine-safety functions in industrial control systems
This Siemens SIRIUS 3RT safety contactor is rated 150 A with 3 poles and a coil voltage of 23-26V AC/DC. It is designed for use in emergency-stop and safety circuits to safely disconnect machinery. No integrated surge suppression is included. Typical applications include industrial automation, conveyor systems, and process control
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This Siemens SIRIUS 3RT safety contactor is rated 150 A with 3 poles and a coil voltage of 23-26V AC/DC. It is designed for use in emergency-stop and safety circuits to safely disconnect machinery. No integrated surge suppression is included. Typical applications include industrial automation, conveyor systems, and process control
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