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Siemens Power Contactor: 3 Poles, 24V DC, 38 A - Safety Contactors
SiemensSafety Contactors

Siemens Power Contactor: 3 Poles, 24V DC, 38 A

The SIEMENS SIRIUS 3RT Safety Contactor is a 3-pole, 24V DC, 38 A IEC power contactor from the SIRIUS 3RT series. It features integrated surge suppression and is identified by manufacturer part number 3RT20281FB443MA0.

SKU 3G-OTH-39561

Brand
Siemens
Item
Power Contactor: 3 Poles, 24V DC, 38 A
Category
Safety Contactors
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Technical Specifications

Siemens
Manufacturer Part Number
3RT20281FB443MA0
Integrated Surge Suppression
Yes
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS SIRIUS 3RT Safety Contactor is a 3-pole, 24V DC, 38 A IEC power contactor from the SIRIUS 3RT series. It features integrated surge suppression and is identified by manufacturer part number 3RT20281FB443MA0.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the SIEMENS SIRIUS 3RT safety contactor used for?

The SIEMENS SIRIUS 3RT safety contactor is used for safely switching and isolating motors and other industrial loads in safety-critical circuits. It is commonly applied in machinery, conveyor systems, and process automation where reliable emergency stop and safety interlock functions are required.

What are the specifications of the SIEMENS 3RT20281FB443MA0 contactor?

The SIEMENS 3RT20281FB443MA0 is a 3-pole IEC power contactor rated 38 A with a 24 V DC coil. It is part of the SIRIUS 3RT series and includes integrated surge suppression. The manufacturer part number is 3RT20281FB443MA0.

Where to buy the SIEMENS 3RT20281FB443MA0 contactor worldwide?

You can source the SIEMENS 3RT20281FB443MA0 contactor worldwide through 3G Electric. As a global industrial equipment distributor since 1990, 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the SIEMENS SIRIUS 3RT safety contactor?

Mount the contactor on a DIN rail or panel using the provided clips. Connect the 24 V DC coil supply to the A1 and A2 terminals, ensuring correct polarity. Wire the three main poles in series with the load circuit. Follow Siemens wiring diagrams and local safety codes for proper 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.

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