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Siemens 3RH2131-1BB40 Contactor Relay: 3 NO + 1 NC, 24V DC

Siemens 3RH2131-1BB40 contactor relay with 3 NO + 1 NC contacts.

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ManufacturerSiemens

Part number3RH2131-1BB40

Contacts 3 NO + 1 NC

Coil Voltage 24V DC

Terminal Type Screw

Frame Size S00

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3 Normally Open, 1 Normally Closed Contact 24V DC Coil Voltage Screw Terminal Connections Frame Size S00 DC Operation

Product description

The Siemens 3RH2131-1BB40 is a contactor relay configured with 3 normally open (NO) and 1 normally closed (NC) contact. It operates on a 24V DC coil voltage and features screw terminals for secure electrical connections. This relay is built in the compact S00 frame size, suitable for space-constrained control panels.

This DC-operated relay is ideal for control circuits in industrial automation, machine building, and panel fabrication where 24V DC control power is standard. Its configuration of 3 NO and 1 NC contacts allows for flexible circuit design in applications like motor starting or load switching.

Stanlo Automation, a veteran-owned distributor of surplus industrial parts, offers the Siemens 3RH2131-1BB40. We provide reliable access to quality components, helping you maintain your automation systems efficiently and cost-effectively.

Technical specifications

Contacts	3 NO + 1 NC
Coil Voltage	24V DC
Terminal Type	Screw
Frame Size	S00

Common applications

Industrial Control Panels

Machine Automation

DC Control Circuits

Motor Control

Automation Systems

Compatible systems

DC Control Systems Industrial Automation Panels

Also known as

Siemens 3RH2131-1BB40 relay Siemens 3NO1NC relay 3RH21 DC Relay

Replaces / compatible with

This relay is a standard component for 24V DC control circuits. Verify compatibility with your specific application requirements and existing Siemens control systems.

Technical note

Expert tip

The screw terminals on the 3RH2131-1BB40 ensure a robust and secure connection, suitable for applications where vibration or high current may be present.

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Frequently asked questions

What is the contact configuration of the Siemens 3RH2131-1BB40?

The Siemens 3RH2131-1BB40 contactor relay features a contact configuration of 3 normally open (NO) and 1 normally closed (NC) poles. This provides flexibility for controlling multiple circuits or implementing safety interlocks.