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Siemens 3RT1535-1BB40 SIRIUS Contactor - 40A, 24V DC

Siemens 3RT1535-1BB40 SIRIUS 4-pole contactor with DC coil.

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ManufacturerSiemens

Part number3RT1535-1BB40

Type Power Contactor

Series SIRIUS 3RT1

Poles 4

NO Contacts 2

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4-pole configuration 2 NO + 2 NC contacts 24V DC coil Size S2 Screw terminals

Product description

The Siemens 3RT1535-1BB40 is a 4-pole power contactor from the SIRIUS series, rated for AC-3 applications at 18.5 kW (400V) and AC-1 at 40A. It features a 24V DC coil and uses screw terminals. This Size S2 contactor is equipped with 2 normally open (NO) and 2 normally closed (NC) contacts.

This DC-coil contactor is designed for industrial applications where a 24V DC control voltage is used or required for specific safety functions and automation systems.

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Technical specifications

Type	Power Contactor
Series	SIRIUS 3RT1
Poles	4
NO Contacts	2
NC Contacts	2
AC-3 Rating	18.5 kW @ 400V
AC-1 Rating	40 A
Coil Voltage	24V DC
Size	S2
Terminals	Screw

Common applications

Industrial motor control

Automation systems with DC control

Control panels

Power switching

Compatible systems

DC control circuits Heavy-duty automation Motor starters

Also known as

Siemens SIRIUS 3RT1535-1BB40 3RT15351BB40 Siemens 24V DC 40A Contactor

Replaces / compatible with

This product has been phased out. The preferred successor is Siemens SIRIUS 3RT2535-1NB30.

Technical note

Expert tip

The screw terminals on the 3RT1535-1BB40 ensure a robust and reliable connection for the high current ratings it supports in industrial settings.

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Frequently asked questions

What is the coil voltage for the Siemens 3RT1535-1BB40 contactor?

The Siemens 3RT1535-1BB40 contactor operates with a 24V DC coil. This makes it suitable for control systems that utilize a direct current for their control circuits.