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Siemens 3RT1045-1AG24 Contactor - 80A, 110V AC, 2NO+2NC

Siemens 3RT1045-1AG24 3-Pole Power Contactor with Aux.

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ManufacturerSiemens

Part number3RT1045-1AG24

AC-3 Rating 80 A

Power 37 kW / 400 V

Coil Voltage 110 V AC (50/60 Hz)

Poles 3

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80A AC-3 rating 37kW power at 400V 110V AC 50/60Hz coil 3-pole configuration 2 NO + 2 NC auxiliary contacts Size S3 SIRIUS series

Product description

The Siemens 3RT1045-1AG24 is a 3-pole power contactor from the SIRIUS series, featuring 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts. It is rated for 80 Amps AC-3 and 37 kW at 400 Volts. This Size S3 contactor operates with a 110V AC coil (50/60 Hz) and is equipped with screw terminals for secure connections. This variant is particularly useful for applications requiring additional signaling contacts.

This contactor is designed for motor control and automation tasks in industrial environments. The inclusion of auxiliary contacts allows for complex control logic, interlocking, and status feedback in electrical control panels and machinery. Its 80A rating and 3-pole main circuit make it suitable for substantial three-phase loads.

Stanlo Automation, a veteran-owned provider of surplus industrial automation parts, offers the Siemens 3RT1045-1AG24. We are dedicated to delivering high-quality components and ensuring customer satisfaction. Secure your essential Siemens automation components from Stanlo Automation, your trusted partner.

Technical specifications

AC-3 Rating	80 A
Power	37 kW / 400 V
Coil Voltage	110 V AC (50/60 Hz)
Poles	3
Auxiliary Contacts	2 NO + 2 NC
Size	S3
Terminals	Screw

Common applications

Motor control

Three-phase motors

Industrial automation

Control panels

Interlocking

Status feedback

Manufacturing

Compatible systems

Siemens SIRIUS motor starters Industrial control systems 35mm DIN rail mounting

Also known as

SIRIUS 3RT1045-1AG24 Siemens 80A Contactor with Aux Contacts

Replaces / compatible with

This is a phased-out product. The preferred successor is the Siemens SIRIUS 3RT2038-1AG24.

Technical note

Expert tip

The integrated 2NO+2NC auxiliary contacts simplify wiring for control circuits requiring status monitoring or interlocking logic.

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Frequently asked questions

Does the Siemens 3RT1045-1AG24 have built-in auxiliary contacts?

Yes, the Siemens 3RT1045-1AG24 power contactor comes with integrated auxiliary contacts, specifically 2 normally open (NO) and 2 normally closed (NC) contacts, for added control and signaling capabilities.