Siemens SIRIUS 3 Pole Reversing Contactor, 1NO + 1NC, 37 kW

Enrgtech Part No: ET21591073
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Manufacturer Part No:
3RT2038-1AL20
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Manufacturer: Siemens

3RT2038-1AL20 Siemens SIRIUS 3 Pole Reversing Contactor, 1NO + 1NC, 37 kW

Product Information

Function:

Reversing

Better World Product:

Yes

Better World Claim:

Low carbon manufacture

Range:

SIRIUS

Normal State Configuration:

1NO + 1NC

Power Rating:

37 kW

Number of Poles:

Checking for live stock

The Siemens 3RT2038‑1AL20 is a heavy‑duty SIRIUS series reversing contactor designed for robust control of three‑phase motors and industrial loads. It features a three‑pole primary circuit and a 1 NO + 1 NC auxiliary contact set, and is rated for 37 kW at 400 V under AC‑3 conditions. With its compact S2 size, screw‑terminal connection, and build quality aligned to IEC 60947‑4‑1 standards, this contactor is ideal for machinery, automation systems and demanding industrial environments.

Unique Features and Benefits of Buying the Siemens 3 Pole Reversing Contactor

3‑pole contactor supports complete three‑phase switching and reversing.
Reversing functionality enables efficient control of motor direction.
1 NO + 1 NC auxiliary contact block supports signalling and interlock tasks.
Rated for 37 kW / 400 V (AC‑3) and 80 A (main current), ensuring high power handling.
Compact S2 size frame, screw‑terminal style, DIN‑rail or screw mounted for versatile installation.

Why Choose this Contactor?

This contactor is engineered to deliver reliable motor reversing control while withstanding harsh industrial conditions. The inclusion of a factory‑fitted auxiliary contact set supports downstream signalling and safety functions without requiring external add‑ons. Tight mounting clearances and a built‑in modular design reduce panel footprint and simplify wiring, making it a practical choice for OEMs and system integrators.

Typical Industrial Applications

Motor control panels requiring forward/reverse function or mode switching.
Automation systems with heavy three‑phase loads needing dependable contactors.
Manufacturing lines where reversing of drive units is required (e.g., conveyors, hoists).
Machine tool installations where compact panel‑mounted switching is critical.
High‑power electrical cabinets specifying an IEC‑rated, modular contactor solution.

Datasheet - 3RT2038-1AL20(Technical Reference)

Environmental Product Declaration(Technical Reference)

Environmental Product Declaration - Overview(Technical Reference)

Siemens EcoTech label(Technical Reference)

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