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3TH3040-0BB4
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3TH3040-0BB4
SIEMENS
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3TH3040-0BB4 - Contactor relay, 24 V DC, - siemens

Cat No. 3TH3040-0BB4
Category Auxiliary Contactors
Stock In Stock
Condition Brand New, Sealed Packaging
Product Type Auxiliary Contactors

In Stock — 10 Qty

$63.40
Quantity Expected Delivery
10 Units 25 Business Days

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Technical Specification

SIEMENS 3TH3040-0BB4 Auxiliary Contactors Technical Specification

Auxiliary Contactors
Auxiliary Contact 4NO
Coil Voltage 24Vdc
Model 3TH3

Product Details

Siemens 3TH3040-0BB4 - Contactor relay, 24 V DC,. We are dedicatedly involved in providing an excellent quality products at Electrihub.

Product Dimensions

SIEMENS 3TH3040-0BB4 dimensions and weight

Dimensions (L × W × H)
Length 48 cm
Width 76 cm
Height 116 cm
Weight
Net Weight 0.61 kg

Dimensions are approximate. For precise dimensional drawings, contact us.

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Product Overview

Siemens 3TH3040-0BB4 - Contactor relay, 24 V DC,. We are dedicatedly involved in providing an excellent quality products at Electrihub.

Frequently Asked Questions for 3TH3040-0BB4

The Siemens 3TH3040-0BB4 auxiliary contactor provides reliable auxiliary switching for control circuits, offering high mechanical endurance, low power consumption coils, compact modular design, and compatibility with Siemens motor starters and control devices.
It is used in control panels, automation systems, MCC panels, interlocking circuits, signalling applications, and auxiliary feedback switching for contactors and breakers.
It provides additional NO/NC contacts used for signalling, interlocking, status indication, and logic control functions, improving circuit flexibility and automation reliability.
Check the coil voltage, number of contacts required, mounting style, compatibility with the main contactor or relay, and control voltage specifications.
Ensure correct DIN rail or panel mounting, verify coil voltage, connect control wiring as per Siemens diagrams, and confirm proper terminal tightening for reliable operation.
Pricing varies depending on the contact configuration and coil rating. Visit Electrihub for updated Siemens auxiliary contactor pricing and stock details.
The official Siemens datasheet for 3TH3040-0BB4 is available on Electrihub, including wiring diagrams, technical data, and installation information.
The price of SIEMENS 3TH3040-0BB4 Auxiliary Contactors depends on specifications, availability, and market conditions. You can check the latest GST-inclusive price on Electrihub India, which provides genuine products, transparent billing, and PAN India delivery.
Yes. RAS Electrihub Private Limited provides PAN India delivery with reliable logistics, safe packaging, and doorstep delivery across all states and union territories.
Yes. RAS Electrihub Private Limited issues GST-compliant invoices and also supports PO-based invoicing for businesses, contractors, and organizations across India.
Yes. RAS Electrihub Private Limited operates as an ISO-certified organization, ensuring quality sourcing, authentic products, and standardized procurement and delivery processes.

Reviews & Ratings

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Ramesh Prasad Jul 23, 2026

Ordered the 3TH3040-0BB4 Auxiliary Contactors from RAS Electrihub for our control panel setup. Received 100% authentic SIEMENS product with proper tax invoice and serial numbers. Smooth performance so far.

Varun Kapoor Jul 23, 2026

The contactor 3TH3040-0BB4 specs matched exactly as listed on RAS Electrihub. Fits perfectly into our existing setup. Very satisfied with the prompt delivery.

Brad M. Nov 26, 2025

SIEMENS 3TH3040-0BB4 auxiliary contactor ensures optimal control circuit performance and compliance in Canada operations.

Akash J. Nov 26, 2025

The SIEMENS 3TH3040-0BB4 auxiliary contactor installed in USA delivers outstanding auxiliary switching and operational reliability. Excellent support from Electrihub.

Praveen C. Nov 26, 2025

SIEMENS 3TH3040-0BB4 auxiliary contactor ensures optimal control circuit performance and compliance in India operations.

Lisa R. Nov 26, 2025

The SIEMENS 3TH3040-0BB4 auxiliary contactor installed in Australia delivers outstanding auxiliary switching and operational reliability. Excellent support from Electrihub.

Priya K. Nov 26, 2025

The SIEMENS 3TH3040-0BB4 auxiliary contactor installed in UK delivers outstanding auxiliary switching and operational reliability. Excellent support from Electrihub.

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