3TH4355-0BB4

The Siemens SIRIUS 3TH4355-0BB4 contactor-type auxiliary relay features a 10-pole (5NO+5NC) design, a coil voltage of 24V DC, and a rated operating current of 10A at 230V AC. It is suitable for signal expansion and isolation applications in industrial automation control circuits. Kenxin Motor is an authorized distributor.

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Siemens SIRIUS 3TH4355-0BB4 24V DC Contactor-type Auxiliary Relay Product Image

Product Positioning

The Siemens SIRIUS 3TH4355-0BB4 is a 10-pole contactor-type auxiliary relay with 5 normally open and 5 normally closed contacts. The coil is designed for 24V DC voltage and can be used to expand the number of contacts in control circuits.

Core Product Advantages and Features

10-pole contact design

With 10 fixed contacts (5NO+5NC), multiple control circuits can be switched simultaneously with a single operation, simplifying wiring design.

24V DC coil voltage

The coil has a rated voltage of 24V DC, making it suitable for use with control panels and PLC output circuits powered by DC power.

IEC standard certification

It complies with IEC 60947-5-1 and EN 50011 standards and can be combined with other control components in the SIRIUS series to form a complete control system.

Stable contact structure

It adopts a double-break contact design, which still maintains good contact stability and reliability in low-voltage and low-current signal circuits.

project	Specification
coil voltage	24V DC
Contact configuration	5 NO + 5 NC (5 groups each of normally open and normally closed, 10 poles in total)
Rated operating current Ie (AC-15)	10A at 230V AC; 6A at 400V AC
Terminal type	Screw terminals
Installation method	35mm DIN rail or screw mounting
Protection level	IP20
Operating ambient temperature	-25°C ~ +55°C
External dimensions (width x height x depth)	Approximately 55 x 78 x 102 mm
Applicable Standards	IEC 60947-5-1, EN 50011
Product Category Code	55E
series	Siemens SIRIUS 3TH4 Contactor-type Auxiliary Relay

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