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Siemens 3RT20281BB40 Non-Reversing IEC Contactor - Non-Reversing IEC Contactors
SiemensNon-Reversing IEC Contactors

Siemens 3RT20281BB40 Non-Reversing IEC Contactor

The SIEMENS IEC Magnetic Contactor is a non-reversing contactor with 3 poles and 3 normally open (NO) contacts, rated at 38 A with a 24 V DC coil (MPN 3RT20281BB40). This component does not include integrated surge…

SKU 3G-OTH-44059

Brand
Siemens
Item
3RT20281BB40 Non-Reversing IEC Contactor
Category
Non-Reversing IEC 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
3RT20281BB40
Type
38 A
Poles
3
DC Coil
24V
Contacts
3NO
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 non-reversing contactor with 3 poles and 3 normally open (NO) contacts, rated at 38 A with a 24 V DC coil (MPN 3RT20281BB40). This component does not include integrated surge suppression.

Frequently Asked Questions

What is the SIEMENS IEC Magnetic Contactor 3RT20281BB40 used for?

This SIEMENS IEC Magnetic Contactor is used for switching and controlling electrical loads in industrial automation, motor control centers, and HVAC systems. It is suitable for non-reversing applications requiring 3 poles and 38 A rating, with a 24 V DC coil for low-voltage control circuits.

What are the specifications of the SIEMENS 3RT20281BB40 contactor?

The SIEMENS 3RT20281BB40 is a non-reversing IEC magnetic contactor with 3 poles and 3 normally open (NO) contacts. It is rated at 38 A with a 24 V DC coil. It does not include integrated surge suppression. This contactor is designed for reliable switching in industrial environments.

Where to buy the SIEMENS 3RT20281BB40 contactor worldwide?

You can source the SIEMENS 3RT20281BB40 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; we supply genuine Siemens components for industrial applications.

How to select the right SIEMENS contactor for a 24 V DC coil system?

To select the right SIEMENS contactor, match the coil voltage (24 V DC) and current rating (38 A) to your load requirements. Ensure the contactor has sufficient poles (3) and normally open contacts (3NO) for your circuit. Verify that the contactor is rated for your application's duty cycle and environmental conditions.

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 non-reversing iec 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
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 38 A, 220V AC Coil (MPN 3RT20281AN20)
Siemens
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 38 A, 220V AC Coil (MPN 3RT20281AN20)
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 25 A, 24V DC Coil (MPN 3RT20261BB40)
Siemens
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 25 A, 24V DC Coil (MPN 3RT20261BB40)
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 38 A, 240V AC Coil (MPN 3RT20281AP60)
Siemens
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 38 A, 240V AC Coil (MPN 3RT20281AP60)
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 17 A, 24V DC Coil (MPN 3RT20251BB40)
Siemens
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 17 A, 24V DC Coil (MPN 3RT20251BB40)
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 12 A, 24V DC Coil (MPN 3RT20241BB40)
Siemens
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 12 A, 24V DC Coil (MPN 3RT20241BB40)
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 9 A, 24V DC Coil (MPN 3RT20161BB42)
Siemens
SIEMENS IEC Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 9 A, 24V DC Coil (MPN 3RT20161BB42)

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