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Siemens 3RT1045-1AG20 Power Contactor - 80A, 110V AC Coil

Siemens 3RT1045-1AG20 3-Pole Power Contactor

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ManufacturerSiemens

Part number3RT1045-1AG20

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 Size S3 SIRIUS series Screw terminals

Product description

The Siemens 3RT1045-1AG20 is a 3-pole power contactor from the SIRIUS series, engineered for reliable motor control. It is rated at 80 Amps AC-3 and 37 kW at 400 Volts. This Size S3 contactor features a 110V AC coil, operating on 50/60 Hz, and is equipped with screw terminals for secure electrical connections.

This contactor is suitable for a wide range of industrial applications, including motor starting and switching in manufacturing, processing, and automation systems. The 110V AC coil is a common control voltage, ensuring compatibility with many control panels and existing infrastructure. Its robust design and 80A rating make it a dependable choice for three-phase motor loads.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, offers the Siemens 3RT1045-1AG20. We are committed to providing quality components and excellent customer service. Source your critical Siemens automation parts from Stanlo Automation and ensure operational continuity.

Technical specifications

AC-3 Rating	80 A
Power	37 kW / 400 V
Coil Voltage	110 V AC (50/60 Hz)
Poles	3
Size	S3
Terminals	Screw

Common applications

Motor control

Three-phase motors

Industrial automation

Manufacturing

Control panels

Power switching

Compatible systems

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

Also known as

SIRIUS 3RT1045-1AG20 Siemens 80A Contactor

Replaces / compatible with

This is a phased-out product. The preferred successor is the Siemens SIRIUS 3RT2038-1AG20.

Technical note

Expert tip

The dual frequency capability of the 110V AC coil simplifies inventory management for installations in regions with differing power frequencies.

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Frequently asked questions

What is the frequency rating for the Siemens 3RT1045-1AG20 contactor's coil?

The Siemens 3RT1045-1AG20 power contactor's 110V AC coil is designed to operate at both 50 Hz and 60 Hz, providing flexibility for different power systems.