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Siemens 3RT2045-1AG20 Power Contactor - 80A, 37kW, 110V AC

Siemens 3RT2045-1AG20: 80A, 37kW 3-pole power contactor with 110V AC coil.

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ManufacturerSiemens

Part number3RT2045-1AG20

Rated operational current AC-3e/AC-3 80 A

Rated power AC-3 (at 400 V) 37 kW

Poles 3

Coil voltage 110 V AC

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AC-3e/AC-3 rated operation 80A current rating 37kW power capacity 110V AC coil S3 frame size 1 NO + 1 NC auxiliary contacts Screw terminals

Product description

The Siemens 3RT2045-1AG20 is a 3-pole power contactor designed for AC-3e/AC-3 applications, rated at 80A and 37 kW at 400V. This S3 frame size contactor features a 110V AC coil and is equipped with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact. The main circuit connections utilize screw terminals.

This contactor is a reliable choice for various industrial motor control and power switching applications. Its 110V AC coil voltage is standard in many control panels, and the S3 frame size signifies its capability to handle significant power loads. The presence of both NO and NC auxiliary contacts allows for basic control and signaling functions within an automated system.

Stanlo Automation, a veteran-owned distributor of surplus industrial parts, offers the Siemens 3RT2045-1AG20 to meet your automation needs. We are committed to providing high-quality, functional components to ensure your systems operate efficiently. Trust Stanlo Automation for dependable surplus parts and excellent customer support.

Technical specifications

Rated operational current AC-3e/AC-3	80 A
Rated power AC-3 (at 400 V)	37 kW
Poles	3
Coil voltage	110 V AC
Auxiliary contacts	1 NO + 1 NC
Terminal type	Screw
Frame size	S3

Common applications

Motor control

Power switching

Industrial automation

Control panels

Manufacturing

Machine control

Distribution boards

Compatible systems

General industrial control applications using 110V AC control circuits.

Also known as

Siemens 3RT2045-1AG20 Contactor SIRIUS 3RT20 Contactor Siemens 80A 110V AC Contactor 3RT2045-1AG20

Replaces / compatible with

This contactor can replace other Siemens SIRIUS 3RT20 series contactors with similar specifications. It is compatible with standard Siemens auxiliary contact blocks.

Technical note

Expert tip

Ensure proper ventilation around the 3RT2045-1AG20 when installed in enclosed control panels, as the S3 frame size can generate significant heat during operation.

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Frequently asked questions

What is the primary use for the Siemens 3RT2045-1AG20 contactor?

The Siemens 3RT2045-1AG20 is primarily used for switching motor loads and other power circuits in industrial automation and control applications. Its 80A rating and S3 frame size make it suitable for medium to heavy-duty applications.