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Siemens 3RT2036-1NB30 51A 22kW 3-Pole Power Contactor

Siemens 3RT2036-1NB30 51A 3-pole power contactor with 20-33V AC/DC coil.

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ManufacturerSiemens

Part number3RT2036-1NB30

Poles 3

Rated operational current AC-3e/AC-3 (690V) 51 A

Rated operational power AC-3e/AC-3 (400V) 22 kW

Coil voltage 20-33 V AC/DC

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AC-3e/AC-3 rating Universal AC/DC coil Integrated varistor 1 NO + 1 NC auxiliary contacts Screw terminals Size S2

Product description

The Siemens 3RT2036-1NB30 is a robust 3-pole power contactor designed for AC-3e/AC-3 duty, capable of switching loads up to 51A and 22kW at 400V. It features a versatile 20-33V AC/DC coil, suitable for various control voltage requirements, and includes an integrated varistor for transient voltage suppression. This model is equipped with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact, and utilizes screw terminals for secure connections.

This contactor is widely used in motor control applications, load management, and power switching in industrial environments. Its universal AC/DC coil makes it adaptable to diverse control systems found in manufacturing plants, machine building, and building automation. The integrated varistor adds a layer of protection against voltage spikes.

Stanlo Automation, a trusted veteran-owned surplus parts distributor, offers the Siemens 3RT2036-1NB30. We specialize in providing high-quality, reliable surplus industrial automation components. Source your contactor needs from Stanlo and ensure your systems are powered by dependable parts.

Technical specifications

Poles	3
Rated operational current AC-3e/AC-3 (690V)	51 A
Rated operational power AC-3e/AC-3 (400V)	22 kW
Coil voltage	20-33 V AC/DC
Frequency	50/60 Hz
Auxiliary contacts	1 NO + 1 NC
Terminals	Screw
Varistor	Integrated

Common applications

Motor control

Load switching

Power distribution

Industrial automation

Manufacturing

Machine building

Compatible systems

AC control systems DC control systems Industrial automation panels

Also known as

Siemens 3RT2036 Contactor 3RT20 Series Contactor Siemens 51A AC/DC Contactor

Replaces / compatible with

The Siemens 3RT2036-1NB30 is a standard choice for motor control and switching applications. It serves as a direct replacement for existing contactors with similar ratings and coil voltages within Siemens or compatible systems.

Technical note

Expert tip

The integrated varistor provides protection against voltage transients, but external surge suppression might be necessary in environments with high levels of electrical noise.

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Frequently asked questions

What is the coil voltage range for the Siemens 3RT2036-1NB30 contactor?

The Siemens 3RT2036-1NB30 power contactor features a versatile coil voltage range of 20-33V AC/DC. This allows for flexible application in systems using either AC or DC control power within this specified range.