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Siemens 3TH4355-0BB4 Contactor Relay - 24V DC, 5 NO / 5 NC

Siemens 3TH4355-0BB4 Contactor Relay with 5 NO/5 NC contacts.

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ManufacturerSiemens

Part number3TH4355-0BB4

Manufacturer Siemens

Part Number 3TH4355-0BB4

Series 3TH43

Rating 55E

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12-month warranty

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5 Normally Open Contacts 5 Normally Closed Contacts Screw Terminal Connections 24V DC Coil Voltage DC Operation EN 50011 Compliant

Product description

The Siemens 3TH4355-0BB4 is a 55E series contactor relay designed for DC operation. It features 5 normally open (NO) and 5 normally closed (NC) contacts with screw terminals. The coil operates at 24V DC, ensuring reliable switching for various industrial applications.

This contactor relay is suitable for use in control circuits, motor starters, and automation systems across industries such as manufacturing, material handling, and building automation. Its robust design adheres to EN 50011 standards, providing dependable performance.

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Technical specifications

Manufacturer	Siemens
Part Number	3TH4355-0BB4
Series	3TH43
Rating	55E
Contacts	5 NO + 5 NC
Terminals	Screw
Coil Voltage	24V DC
Operation	DC Operation
Standard	EN 50011

Common applications

Motor Control

Control Panels

Automation Systems

Lighting Control

HVAC Systems

Industrial Machinery

Compatible systems

Control circuits requiring 24V DC switching EN 50011 compatible systems

Also known as

Siemens 3TH4355-0BB4 Siemens Contactor Relay 55E Siemens DC Contactor Relay

Replaces / compatible with

Replaces older Siemens contactor relays in the 55E series. Compatible with standard EN 50011 accessories.

Technical note

Expert tip

Ensure the control circuit voltage is precisely 24V DC to prevent coil damage and ensure proper operation of the 3TH4355-0BB4.

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Frequently asked questions

What are the contact configurations for the Siemens 3TH4355-0BB4?

The Siemens 3TH4355-0BB4 features a contact configuration of 5 normally open (NO) and 5 normally closed (NC) contacts. This allows for flexible wiring in complex control circuits.