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Siemens Magnetic Contactor: 3 Poles, 120V AC, 17 A - Safety Contactors
SiemensSafety Contactors

Siemens Magnetic Contactor: 3 Poles, 120V AC, 17 A

The SIEMENS IEC Magnetic Contactor: 3 Poles is a safety contactor from the SIRIUS 3RT series, with MPN 3RT20251AK643MA0. It operates at 120V AC and 17 A, and does not include integrated surge suppression.

SKU 3G-OTH-40408

Brand
Siemens
Item
Magnetic Contactor: 3 Poles, 120V AC, 17 A
Category
Safety Contactors
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Technical Specifications

Siemens
Manufacturer Part Number
3RT20251AK643MA0
Type
17 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, with MPN 3RT20251AK643MA0. It operates at 120V AC and 17 A, and does not include integrated surge suppression.

Frequently Asked Questions

What is the SIEMENS 3RT20251AK643MA0 safety contactor used for?

The SIEMENS 3RT20251AK643MA0 is a SIRIUS 3RT safety contactor used for safely switching and isolating motors and other loads in industrial machinery, conveyors, and automation systems where emergency-stop and safety-circuit compliance is required.

What are the specifications of the SIEMENS 3RT20251AK643MA0 contactor?

This SIEMENS IEC magnetic contactor has 3 poles, a coil voltage of 120V AC, and a rated current of 17 A. It is part of the SIRIUS 3RT safety contactor series and does not include integrated surge suppression.

Where to buy the SIEMENS 3RT20251AK643MA0 contactor worldwide?

You can source the SIEMENS 3RT20251AK643MA0 contactor through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations for this SIRIUS 3RT safety contactor.

How to install the SIEMENS 3RT20251AK643MA0 safety contactor?

Mount the SIEMENS 3RT20251AK643MA0 on a DIN rail or panel, connect the 120V AC coil supply, and wire the three main poles in series with the load. Ensure the control circuit includes proper fusing and that the contactor is used only in safety-rated applications per local codes.

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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