Call Us Today 01706 242050
40.51.9.009.0300 Finder Miniature PCB relay 1pole 10A DC 9V

40.51.9.009.0300 Finder Miniature PCB relay 1pole 10A DC 9V

Finder 40.51.9.009.0300 electromechanical relay with a 24 V DC coil and single changeover contact designed for industrial control and automation systems.

SKU: 40.51.9.009.0300Alt SKU: 405190090300MPN: 40.51.9.009.0300
Price on application Contact us for pricing and availability.
Call 01708 343600

Why Choose the Finder 40.51.9.009.0300 Industrial Relay?

The Finder 40.51.9.009.0300 is a compact and reliable electromechanical relay designed for switching and control applications in industrial automation, electrical panels and building control systems. As part of the proven Finder 40 Series relay range, it provides dependable switching performance, long service life and efficient interface control between automation equipment and electrical loads.

This relay provides a practical solution for applications requiring reliable electrical switching in a compact plug-in format. Its robust construction and compatibility with Finder relay sockets allow straightforward installation, maintenance and replacement in professional control systems.

With a 24 V DC coil supply and a single changeover (SPDT) contact configuration, the Finder 40.51.9.009.0300 is suitable for industrial control circuits, automation equipment and electrical interface applications requiring dependable switching operation.

Key Advantages

  • Compact industrial relay designed for control and automation applications.
  • 24 V DC coil voltage suitable for industrial control circuits.
  • Single changeover contact (SPDT) provides flexible switching capability.
  • Reliable electromechanical switching with long operational life.
  • Plug-in design enables simple installation and replacement.
  • Suitable for industrial control panels, machinery and automation systems.

Key Features

  • Finder 40 Series industrial relay.
  • 1 changeover contact (CO/SPDT).
  • 24 V DC coil supply.
  • Electromechanical relay technology.
  • Compact plug-in construction.
  • Designed for interface and switching applications.
  • Compatible with Finder relay sockets.
  • Suitable for industrial automation and electrical control systems.

Reliable Switching for Industrial Control Systems

Electromechanical relays such as the Finder 40.51.9.009.0300 provide electrical isolation and dependable switching between control circuits and connected loads. They allow low-power control signals from automation equipment to safely operate electrical devices and systems.

The Finder 40 Series is designed for professional electrical installations, automation equipment and control panels. Its compact construction, flexible contact arrangement and reliable switching mechanism make it suitable for a wide range of industrial and commercial applications.

Typical Applications

  • Industrial automation control panels.
  • PLC interface and signal switching applications.
  • Machine control systems.
  • Electrical control circuits.
  • Building automation equipment.
  • General-purpose industrial switching applications.

Technical Specifications

Tick the specs you need, then view products that match.

Manufacturer Finder
Series 40 Series
Model 40.51.9.009.0300
Product type Electromechanical relay
Contact configuration 1 changeover (SPDT / CO)
Coil voltage 24 V DC
Mounting type Plug-in socket mounting
Application Industrial automation and electrical control systems
Coil / Supply Voltage 24 V DC
Contacts 1 C/O

Frequently Asked Questions

What is the Finder 40.51.9.009.0300 used for?

The relay is used for switching and isolating electrical control circuits in industrial automation, machinery and electrical systems.

What coil voltage does this relay require?

The Finder 40.51.9.009.0300 operates with a 24 V DC coil supply.

How many contacts does the relay have?

The relay features one changeover contact (SPDT/CO) for flexible switching operation.

Where is this relay typically installed?

The relay is typically installed inside electrical control panels and automation systems using a compatible Finder relay socket.

What type of relay is the Finder 40.51.9.009.0300?

It is an electromechanical plug-in relay from the Finder 40 Series product range.

Trusted by Electrical Engineers Worldwide

Finder relays are widely used by electrical engineers and automation professionals to provide dependable switching, circuit isolation and reliable control in modern electrical systems.

● Service Agreements

Credit Accounts

Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.

 Priority sourcing and supply support

 Flexible payment terms for qualifying organisations

 Support for engineering, maintenance, and operations

500 +

Stock lines ready to ship

1,000 +

Same day dispatches

3500 +

Customers supported

28 

Trusted Manfacturers

● frequently asked questions

Common questions about our products and support

 

At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.

What product ranges do you supply

We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products. 

Can you help specify the correct part?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

Do you have stock for urgent orders?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What are your delivery times and costs?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What about warranties, returns and faulty items?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

● latest blog

Discover  our latest insights and
expert advice

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

by | Aug 11, 2026 |

LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.

LED Controls: Danfoss Drives Authorised Partner

LED Controls: Danfoss Drives Authorised Partner

by | Jan 17, 2026 |

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...

LED Controls: Your Complete Control Panel Solution

LED Controls: Your Complete Control Panel Solution

by | Jan 17, 2026 |

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...