Siemens 3RT2036-3XB40-0LA2 Traction Contactor AC-3/AC-3e, 51A, 22kW, 3-Pole, 24V DC, Varistor Original Brand New

Overview

The Siemens 3RT2036-3XB40-0LA2 is a high-performance traction contactor designed for heavy-duty industrial switching applications. Engineered for reliability and long service life, this 3-pole contactor delivers superior performance in AC-3e/AC-3 categories with a 51 A operational current and 22 kW power rating at 400 V.

Featuring a solid-state operating mechanism, integrated varistor protection, and a combination of screw terminals (main circuit) and spring-loaded terminals (control and auxiliary), this Siemens S2-frame contactor ensures fast installation, low maintenance, and stable operation in demanding environments.

Benefit

• High switching reliability thanks to solid-state operating mechanism

• Extended equipment protection with built-in varistor for surge suppression

• Versatile application range suitable for AC-3e/AC-3 motor control

• Fast and secure wiring using screw terminals (main) and spring-loaded terminals (control/aux)

• Robust performance at 51 A and 22 kW for mid-range industrial motors

• Auxiliary contacts (1 NO + 1 NC) included for flexible control circuits

• Energy-efficient 24 V DC control voltage (0.7–1.25× Uc)

Features & Function

1. Heavy-Duty Motor Control

Designed for motor switching tasks up to 22 kW at 400 V, ideal for pumps, compressors, conveyors, and traction systems.

2. Solid-State Operating Mechanism

Provides a maintenance-free solution with reduced wear and improved switching consistency.

3. Integrated Varistor Protection

Safeguards the control circuit from voltage spikes, increasing component lifespan.

4. Reliable Wiring Interface

• Main Circuit: Screw terminal for secure, vibration-resistant connections

• Control & Auxiliary Circuit: Spring-loaded terminals for quick installation

5. Compact S2 Frame Size

Saves panel space and simplifies integration into control cabinets.

Technical Specification

• Product Type: Traction Contactor

• Model Number: Siemens 3RT2036-3XB40-0LA2

• Operational Current (AC-3): 51 A

• Power Rating: 22 kW @ 400 V

• Control Voltage: 24 V DC (0.7–1.25 × Uc)

• Poles: 3-pole

• Operating Mechanism: Solid-state

• Protection: Integrated varistor

• Auxiliary Contacts: 1 NO + 1 NC

• Main Circuit Terminal: Screw terminal

• Control/Aux Terminal: Spring-loaded

• Frame Size: S2

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