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

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

The SIEMENS IEC Magnetic Contactor: Reversing is a reversing IEC contactor with 3 poles and 3NO contacts, rated at 12 A with a 24V DC coil (MPN 3RA23178XB301BB4). It does not include integrated surge suppression.

SKU 3G-OTH-44045

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

Siemens
Manufacturer Part Number
3RA23178XB301BB4
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: Reversing is a reversing IEC contactor with 3 poles and 3NO contacts, rated at 12 A with a 24V DC coil (MPN 3RA23178XB301BB4). It does not include integrated surge suppression.

Frequently Asked Questions

What is the SIEMENS 3RA23178XB301BB4 reversing contactor used for?

The SIEMENS 3RA23178XB301BB4 is a reversing IEC magnetic contactor used to control the forward and reverse rotation of three-phase motors in industrial applications such as conveyors, pumps, and hoists. It features 3 poles and 3NO contacts rated at 12 A with a 24V DC coil, enabling reliable motor direction switching.

What are the specifications of the SIEMENS 3RA23178XB301BB4 contactor?

The SIEMENS 3RA23178XB301BB4 is a reversing IEC magnetic 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 3RA23178XB301BB4.

Where to buy the SIEMENS 3RA23178XB301BB4 contactor worldwide?

You can source the SIEMENS 3RA23178XB301BB4 reversing 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 on this Siemens-branded component.

How to install the SIEMENS 3RA23178XB301BB4 reversing contactor?

Mount the SIEMENS 3RA23178XB301BB4 on a DIN rail or panel, connect the 24V DC coil to a suitable power supply, and wire the three-phase motor to the 3NO contacts per the wiring diagram. Ensure proper mechanical interlocking for reversing applications. Follow Siemens' generic installation guidelines for IEC contactors.

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 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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