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Siemens 3RH2140-1AB00 4 NO Contactor Relay - 24V AC

Siemens 3RH2140-1AB00 Contactor Relay with 4 NO contacts.

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ManufacturerSiemens

Part number3RH2140-1AB00

Type Contactor Relay

Contacts 4 NO

Coil Voltage 24V AC

Frequency 50/60 Hz

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Response within 1 business hour

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12-month warranty

All units tested

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Same-day dispatch

Order by 2pm CST

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Worldwide delivery

US, EU, Asia, Middle East

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Veteran-owned

CAGE: 9NK75

4 normally open contacts 24V AC coil Screw terminals Frame size S00 SIRIUS design

Product description

The Siemens 3RH2140-1AB00 is a 4 NO contactor relay, part of the robust 3RH21 series. It features a 24V AC coil operating at 50/60 Hz and utilizes convenient screw terminals for secure connections. This unit is housed in frame size S00, making it a compact yet powerful component for various control tasks.

This contactor relay is suitable for a wide range of applications, including motor control circuits, lighting control, and general switching duties in industrial and commercial settings. Its four normally open contacts provide flexibility for multiple load circuits.

Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens 3RH2140-1AB00. We specialize in providing reliable industrial automation components, ensuring our customers receive quality parts from trusted manufacturers.

Technical specifications

Type	Contactor Relay
Contacts	4 NO
Coil Voltage	24V AC
Frequency	50/60 Hz
Terminals	Screw
Frame Size	S00

Common applications

Motor control

Lighting control

Automation systems

Control circuits

General switching

Compatible systems

Control panels Automation systems Industrial machinery

Also known as

Siemens 3RH2140-1AB00 SIRIUS Contactor Relay

Replaces / compatible with

Replaces older Siemens contactor relays with similar specifications or can be used in new panel designs.

Technical note

Expert tip

Ensure proper torque is applied to the screw terminals of the 3RH2140-1AB00 to guarantee a secure connection and prevent overheating.

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Frequently asked questions

What is the application for a 4 NO contactor relay like the Siemens 3RH2140-1AB00?

A 4 NO contactor relay, such as the Siemens 3RH2140-1AB00, is typically used to switch multiple independent loads simultaneously when the coil is energized. It's common in control circuits for starting motors with multiple auxiliary contacts or for controlling multiple circuits in an automation system.