ABB 1SFN164703R1000 ZL145 Main Contact Kit for A145 and AF145 Contactors

The ZL145 contact kit is associated with ABB A145 and AF145 contactors and belongs to the accessory and spare-part range for low-voltage contactor equipment. ABB documentation identifies the corresponding product type as ZL145 and the product ID as 1SFN164703R1000. :contentReference[oaicite:2]{index=2}

Product Identification

• Manufacturer: ABB
• Part Number: 1SFN164703R1000
• Product Type: ZL145 Main Contact Kit
• Product Name: Main Contact Kit
• Suitable Contactors: A145 and AF145
• Contact Configuration: 3 Pole
• Terminal Type: Screw Terminals
• Product Category: Contactor Accessories / Spare Parts
• EAN: 7320500204535

ABB ZL145 Main Contact Kit Overview

The ABB ZL145 Main Contact Kit is designed as a replacement contact assembly for compatible ABB contactors. The complete set contains the stationary and moving contact components together with springs and the necessary mounting hardware. :contentReference[oaicite:3]{index=3}

The corresponding ABB product identification is 1SFN164703R1000. The extended product type is ZL145, which provides a convenient reference when identifying the component in contactor maintenance and spare-parts records. :contentReference[oaicite:4]{index=4}

Main Contact Set Configuration

ABB specifies the ZL145 as a three-pole main contact set. The assembly contains the fixed contacts, moving contacts, springs and required screws or associated hardware needed for the contact arrangement. :contentReference[oaicite:5]{index=5}

The contact set is therefore supplied as an integrated maintenance component rather than as a single individual contact piece.

This configuration allows the main contact system of a compatible contactor to be serviced using the corresponding ZL145 assembly.

Compatibility with A145 and AF145 Contactors

ABB documentation identifies ZL145 as suitable for the A145 and AF145 contactor range. The official ABB product listing also identifies the product as a main contact kit for contactors. :contentReference[oaicite:6]{index=6}

The contactor model should be verified before selecting the replacement kit because ABB provides different ZL contact sets for different contactor sizes.

For example, ABB’s spare-parts documentation separately lists ZL95 for A/AF95-30, ZL110 for A/AF110-30 and ZL145 for A/AF145. :contentReference[oaicite:7]{index=7}

Function of the Main Contacts

The main contacts are the primary switching elements within the contactor’s power circuit. When the contactor operates, the moving contacts engage with the fixed contacts to establish the electrical connection.

When the contactor is released, the moving contacts separate from the fixed contacts, interrupting the main circuit.

The ZL145 assembly provides the mechanical contact components required for this switching function in compatible ABB contactors.

Fixed Contacts

The fixed contacts form the stationary portion of the main contact system. They provide the corresponding electrical contact surfaces for the moving contacts.

The fixed contact components are included within the ZL145 main contact kit rather than being specified as a separate individual product in the standard kit description. :contentReference[oaicite:8]{index=8}

Moving Contacts

The moving contacts operate mechanically with the contactor’s operating mechanism. Their movement determines whether the main power circuit is connected or disconnected.

Because the moving contacts work together with the fixed contacts and springs, the ZL145 kit provides the principal mechanical contact components required for the main switching assembly.

Springs and Hardware

The ZL145 main contact kit also includes springs and required hardware. These components support the mechanical operation and installation of the contact set. :contentReference[oaicite:9]{index=9}

The complete kit therefore provides more than the contact surfaces alone and is intended to maintain the associated contactor’s main contact assembly.

Three-Pole Contact Configuration

ABB specifies the ZL145 as a three-pole main contact set. The three main poles are operated by the contactor mechanism as part of the common switching operation. :contentReference[oaicite:10]{index=10}

This three-pole arrangement is suitable for the corresponding three-phase contactor applications associated with the A145 and AF145 product range.

Technical Specification Summary

Contactor Maintenance Application

Main contact assemblies are subject to electrical and mechanical operating conditions during contactor operation. Over time, the contact surfaces and associated mechanical components can require inspection or replacement.

The ZL145 Main Contact Kit provides a defined ABB spare-part assembly for compatible A145 and AF145 contactors.

The contactor model and part identification should be checked before maintenance to ensure that the appropriate contact kit is selected.

Contact Wear Considerations

The main contact surfaces can experience electrical wear during switching operations. The degree of wear depends on the electrical load, switching frequency, application characteristics and operating conditions.

Inspection should consider the condition of both fixed and moving contacts as well as the associated springs and mounting hardware.

If the contact assembly shows significant mechanical or electrical deterioration, replacement with the corresponding contact kit may be considered according to the applicable ABB maintenance procedure.

Relationship to Other ABB ZL Contact Kits

ABB uses different ZL contact sets for different contactor sizes. The spare-parts catalog identifies several examples, including ZL95, ZL110, ZL145, ZL185, ZL210, ZL260 and ZL300. :contentReference[oaicite:11]{index=11}

The corresponding part numbers are different for each contactor size. Therefore, the ZL145 kit should not be selected solely on the basis that another ZL-series contact set appears physically similar.

Installation Considerations

Before installation, the contactor should be isolated according to the applicable electrical safety procedure. The existing contact assembly should be inspected and the contactor model verified.

The replacement contact kit should be installed using the specified mechanical arrangement and hardware. Correct positioning of the fixed and moving contacts is essential for proper contactor operation.

The operating mechanism should also be checked for free mechanical movement after installation.

Electrical Connection

The ZL145 main contact kit is associated with the main contact section of the compatible contactor. ABB identifies the product with screw terminals. :contentReference[oaicite:12]{index=12}

The complete contactor assembly should be checked for correct conductor connections and appropriate tightening according to the applicable technical instructions.

Mechanical Operation

The main contact assembly works together with the contactor’s operating mechanism. The moving contacts must travel correctly between the open and closed positions.

The included springs contribute to the mechanical contact arrangement. Any abnormal mechanical resistance or incorrect contact alignment should be investigated before returning the contactor to service.

Application in Low-Voltage Switching Systems

ABB A145 and AF145 contactors are part of ABB’s low-voltage contactor product range. The ZL145 main contact kit is an accessory intended for the corresponding contactor sizes.

The component can therefore be relevant to maintenance programs where contactor main contact assemblies are replaced as part of equipment servicing.

Inventory Identification

For industrial inventory records, the recommended product description is ABB 1SFN164703R1000 ZL145 Main Contact Kit.

Additional searchable descriptions can include ABB ZL145 Main Contacts, ABB ZL145 Contact Kit, ABB 1SFN164703R1000 Main Contact Set and ABB A145 AF145 Contact Kit.

The complete part number 1SFN164703R1000 should remain the primary identification reference.

Product Dimensions and Weight

Available product information identifies the net dimensions as approximately 120 mm in width, 145 mm in length and 34 mm in height, with a net weight of approximately 0.38 kg. :contentReference[oaicite:13]{index=13}

The package information listed by ABB gives approximately 120 mm × 145 mm × 34 mm and a gross package weight of approximately 0.43 kg. :contentReference[oaicite:14]{index=14}

Product Classification

ABB classifies the ZL145 Main Contact Kit within the accessories for block contactors and low-voltage switching technology. The product is intended as a contactor accessory and spare component rather than as a complete contactor. :contentReference[oaicite:15]{index=15}

This distinction is important when creating technical product records because 1SFN164703R1000 represents the contact kit rather than the complete A145 or AF145 contactor.

Compatibility Verification

Before ordering or installing ABB 1SFN164703R1000, the following information should be verified:

• ABB part number: 1SFN164703R1000
• Product type: ZL145
• Compatible contactor: A145 or AF145
• Three-pole contact configuration
• Main contact arrangement
• Mechanical installation arrangement
• Required mounting hardware
• Applicable ABB technical documentation

Correct identification is particularly important because ABB provides different contact kits for different contactor frame sizes.

Technical Documentation

ABB’s spare-parts documentation identifies ZL145 as the main contact set for A145 and AF145 contactors and assigns order code 1SFN164703R1000. :contentReference[oaicite:16]{index=16}

The ABB product listing identifies the same part number as the ZL145 Main Contact Kit and specifies the three-pole contact-set construction. :contentReference[oaicite:17]{index=17}

Product Application Summary

ABB 1SFN164703R1000 is the ZL145 Main Contact Kit for compatible ABB A145 and AF145 contactors. It is a three-pole main contact set consisting of fixed contacts, moving contacts, springs and required hardware.

The kit is designed as a contactor maintenance component and belongs to ABB’s low-voltage contactor accessories and spare-parts range. :contentReference[oaicite:18]{index=18}

Conclusion

ABB 1SFN164703R1000 is the ABB ZL145 Main Contact Kit. It is designed for A145 and AF145 contactors and contains the main fixed and moving contact components, springs and associated hardware required for the three-pole contact arrangement. :contentReference[oaicite:19]{index=19}

The recommended technical product name is ABB 1SFN164703R1000 ZL145 Main Contact Kit for A145 and AF145 Contactors. When identifying this component for maintenance or inventory purposes, the complete ABB part number and compatible contactor model should be verified.