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Siemens Magnetic Contactor: Reversing, 3 Poles, 3NO Contacts, 65 A - Reversing IEC Contactors
SiemensReversing IEC Contactors

Siemens Magnetic Contactor: Reversing, 3 Poles, 3NO Contacts, 65 A

The SIEMENS IEC Magnetic Contactor: Reversing (MPN 3RA23378XB301NB3) is a reversing IEC contactor with 3 poles and 3NO contacts, rated for 65 A and a 24V AC coil. This unit does not include integrated surge suppression.

SKU 3G-OTH-45253

Brand
Siemens
Item
Magnetic Contactor: Reversing, 3 Poles, 3NO Contacts, 65 A
Category
Reversing IEC Contactors
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Technical Specifications

Siemens
Manufacturer Part Number
3RA23378XB301NB3
Type
65 A
Poles
3
AC 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 (MPN 3RA23378XB301NB3) is a reversing IEC contactor with 3 poles and 3NO contacts, rated for 65 A and a 24V AC coil. This unit does not include integrated surge suppression.

Frequently Asked Questions

What is the SIEMENS 3RA23378XB301NB3 reversing contactor used for?

This reversing IEC magnetic contactor is used to control the forward and reverse rotation of three-phase AC motors in industrial applications such as conveyors, pumps, and hoists. It switches motor direction by interchanging two of the three supply phases, enabling reliable bidirectional motor control in automation and manufacturing systems.

What are the specifications of the SIEMENS 3RA23378XB301NB3 contactor?

The SIEMENS 3RA23378XB301NB3 is a reversing IEC magnetic contactor with 3 poles and 3 normally open (NO) contacts. It is rated for 65 A and has a 24V AC coil. This unit does not include integrated surge suppression. The manufacturer part number is 3RA23378XB301NB3.

Where to buy the SIEMENS 3RA23378XB301NB3 contactor worldwide?

You can source the SIEMENS 3RA23378XB301NB3 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; we supply genuine Siemens components for industrial motor control applications.

How to select a reversing contactor for a motor application?

Select a reversing contactor by matching the motor's full-load current (FLC) and voltage. For a 65 A rated contactor like the SIEMENS 3RA23378XB301NB3, ensure the motor FLC does not exceed 65 A and the coil voltage matches your control circuit (24V AC). Include a mechanical interlock to prevent simultaneous forward/reverse engagement. Consult Siemens documentation for proper sizing.

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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