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Siemens Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 12 A - Non-Reversing IEC Contactors
SiemensNon-Reversing IEC Contactors

Siemens Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 12 A

The SIEMENS IEC Magnetic Contactor: Non-Reversing (MPN 3RT20171BB42) is a non-reversing IEC contactor with 3 poles and 3NO contacts, rated at 12 A with a 24V DC coil. It does not include integrated surge suppression.

SKU 3G-OTH-40819

Brand
Siemens
Item
Magnetic Contactor: Non-Reversing, 3 Poles, 3NO Contacts, 12 A
Category
Non-Reversing IEC Contactors
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Technical Specifications

Siemens
Manufacturer Part Number
3RT20171BB42
Type
12 A
Poles
3
DC Coil
24V
Contacts
3NO
Integrated Surge Suppression
No
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS IEC Magnetic Contactor: Non-Reversing (MPN 3RT20171BB42) is a non-reversing IEC contactor with 3 poles and 3NO contacts, rated at 12 A with a 24V DC coil. It does not include integrated surge suppression.

Frequently Asked Questions

What is the SIEMENS 3RT20171BB42 contactor used for?

The SIEMENS IEC Magnetic Contactor 3RT20171BB42 is used for switching and controlling electrical loads in industrial automation, HVAC, and motor control applications. It handles up to 12 A with a 24V DC coil, making it suitable for non-reversing motor starters and lighting circuits.

What are the specifications of the SIEMENS 3RT20171BB42 contactor?

The SIEMENS 3RT20171BB42 is a non-reversing IEC contactor with 3 poles and 3NO contacts, rated at 12 A. It has a 24V DC coil and does not include integrated surge suppression. The brand is SIEMENS, and the manufacturer part number is 3RT20171BB42.

Where to buy the SIEMENS 3RT20171BB42 contactor worldwide?

You can source the SIEMENS 3RT20171BB42 contactor through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time.

How to install the SIEMENS 3RT20171BB42 contactor?

Mount the SIEMENS 3RT20171BB42 contactor on a DIN rail or panel using the provided slots. Connect the 24V DC coil to a suitable power supply, and wire the 3NO contacts for your load circuit. Ensure proper torque on terminals and follow local electrical codes. Always de-energize before 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 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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