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Siemens 3RT1025-1BB44-3MA0 SIRIUS Power Contactor

Siemens 3RT1025-1BB44-3MA0 3-pole power contactor

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ManufacturerSiemens

Part number3RT1025-1BB44-3MA0

Manufacturer Siemens

Part Number 3RT1025-1BB44-3MA0

Type Power Contactor

Poles 3

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3-pole configuration AC-3 rating 7.5 kW power 24V DC coil 2 NO + 2 NC auxiliary contacts Size S0 SUVA compliant

Product description

The Siemens 3RT1025-1BB44-3MA0 is a specialized 3-pole power contactor from the SIRIUS series, designed for AC-3 duty at 17A and 7.5 kW (400V). It features a 24V DC coil and includes 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts, with captive terminals. This Size S0 unit is specifically configured for SUVA applications and uses screw terminals.

This contactor is tailored for specific industrial applications, particularly those adhering to SUVA (Swiss National Accident Insurance Fund) safety standards, often found in machine building and automation. The auxiliary contacts provide additional signaling capabilities for control circuits.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, offers the Siemens 3RT1025-1BB44-3MA0. We ensure that our surplus inventory provides cost-effective and reliable solutions for your specialized automation requirements, helping you maintain operational efficiency.

Technical specifications

Manufacturer	Siemens
Part Number	3RT1025-1BB44-3MA0
Type	Power Contactor
Poles	3
Rated Current AC-3	17 A
Rated Power AC-3	7.5 kW @ 400 V
Coil Voltage	24 V DC
Auxiliary Contacts	2 NO + 2 NC
Size	S0
Terminal Type	Screw
Special	For SUVA applications

Common applications

Machine control

Automation systems

SUVA applications

Industrial machinery

Safety circuits

Control panels

Compatible systems

Designed for control systems requiring 24V DC operation and auxiliary contact signaling, often used in machine tools and automated assembly lines meeting SUVA guidelines.

Also known as

Siemens 3RT1025-1BB44-3MA0, SIRIUS 3RT1025, Siemens SUVA Contactor, 24V DC Contactor with Aux

Replaces / compatible with

This product is phased out. The preferred successor is the Siemens SIRIUS 3RT2025-1BB44-3MA0.

Technical note

Expert tip

The integrated auxiliary contacts on the 3RT1025-1BB44-3MA0 simplify control panel wiring for status feedback and interlocking functions, particularly within SUVA-compliant machinery.

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Frequently asked questions

What does the '-3MA0' suffix signify on the Siemens 3RT1025-1BB44-3MA0?

The '-3MA0' suffix on the Siemens 3RT1025-1BB44-3MA0 indicates specific auxiliary contact configurations (2 NO + 2 NC) and suitability for SUVA applications. It also denotes captive screw terminals.