3RT2045-1AP04

Siemens 3RT2045-1AP04 SIRIUS power contactor, Size S3 2NO2NC
Siemens 3RT2045-1AP04 SIRIUS power contactor, Size S3 2NO2NC

The Siemens 3RT2045-1AP04 is a SIRIUS 3RT2 series Size S3, 3-pole contactor with AC-3 rated current of 80A and 37kW (400V), control voltage of 230VAC/50Hz, and equipped with 2NO+2NC auxiliary contacts.

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Siemens 3RT2045-1AP04 SIRIUS power contactor, Size S3 2NO2NC
Product Positioning

The Siemens 3RT2045-1AP04 power contactor is a Size S3, 3-pole design from the SIRIUS 3RT2 series. It has an AC-3 rated current of 80A and a rated current of 37kW (400V), suitable for motor control circuits requiring multiple feedback contacts. The Siemens 3RT2045-1AP04 controls at 230VAC/50Hz, features 2NO+2NC auxiliary contacts, screw terminal connections, and a typical mechanical life of 10 million operating cycles.

Core Product Advantages and Features
Size S3 standard contactor
AC-3 rated current 80A, 37kW (400V), suitable for general motor starting and switching.
230VAC control voltage
Rated at 50Hz, with 2NO+2NC auxiliary contacts, providing more complete multi-circuit monitoring.
High insulation withstand voltage design
The main circuit has an insulation voltage of 1000V, and the auxiliary circuit has an insulation voltage of 690V, ensuring safety and reliability.
Mechanical life reaches 10 million cycles.
Suitable for industrial applications requiring long-term, high-frequency switching.
project Specification
Rated current (AC-3) 80 A
Rated power 37 kW / 400V
Extreme number 3 poles
Control/coil voltage 230 VAC / 50Hz
Auxiliary contact configuration 2NO+2NC
Applicable series/Size SIRIUS 3RT2 / Size S3
Terminal type Screw terminals
External dimensions 140 x 70 x 195 mm
weight Approximately 1.762 kg
Main circuit insulation voltage 1000V (Pollution Level 3)
Auxiliary circuit insulation voltage 690V (Pollution Level 3)
Mechanical life Typical 10 million operation cycles
Protection level IP20
Certification CSA, UL, KC, EAC, CCC, RCM and classification society certifications

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