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40.51.9.021.2000 Finder Miniature PCB relay 1pole 10A DC 21V
Finder 40.51.9.021.2000 miniature electromechanical relay with 21 V DC coil, 1 changeover contact and 10 A switching capacity for industrial control applications.
Why Choose the Finder 40.51.9.021.2000 Miniature Relay?
The Finder 40.51.9.021.2000 is a compact and reliable electromechanical PCB relay designed for switching and control applications in industrial automation, electrical equipment and electronic systems. As part of the Finder 40 Series miniature relay range, it provides dependable switching performance in a space-saving format suitable for PCB mounting and relay sockets.
This relay combines a robust mechanical design with a 21 V DC coil and single changeover contact configuration, making it suitable for a wide range of control circuits. Its miniature construction allows easy integration into control panels, automation equipment and electronic assemblies where reliable switching is required.
With a 10 A contact rating and 21 V DC coil voltage, the Finder 40.51.9.021.2000 is designed for dependable switching of electrical loads in industrial and commercial applications. The relay can be installed on printed circuit boards or used with compatible Finder 95 Series sockets.
Key Advantages
- Compact miniature electromechanical relay for PCB and socket mounting.
- 10 A switching capacity for general electrical control applications.
- 21 V DC coil voltage for reliable relay operation.
- Single changeover contact configuration for flexible switching.
- Suitable for industrial automation, control equipment and electrical systems.
- Compatible with Finder 40 Series accessories.
Key Features
- Finder 40 Series miniature PCB relay.
- 1 changeover contact (SPDT / 1CO).
- 10 A rated contact current.
- 21 V DC coil supply.
- AgCdO contact material.
- PCB or socket mounting capability.
- 5 mm terminal pitch.
- RT II protection category.
Reliable Switching for Control Systems
Electromechanical relays such as the Finder 40.51.9.021.2000 provide electrical isolation between control circuits and switched loads while allowing reliable operation of automation and control equipment.
The Finder 40 Series is designed for applications requiring compact dimensions, dependable switching and straightforward integration into electrical assemblies. Its PCB and socket mounting options provide flexibility for equipment designers and maintenance engineers.
Typical Applications
- Industrial automation control systems.
- Electrical control panels.
- Machine control equipment.
- Timers and control devices.
- Building and industrial electrical systems.
- Electronic equipment requiring reliable switching.
Technical Specifications
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| Device Type | Plug-in Relay | |
|---|---|---|
| Switching Current (A) | 10 A | |
| Mounting Type | PCB, Plug-in socket | |
| Coil / Supply Voltage | 21 V DC | |
| Contacts | 1 C/O | |
| Manufacturer | Finder | |
| Series | 40 Series | |
| Model | 40.51.9.021.2000 | |
| Product type | Miniature electromechanical relay | |
| Contact configuration | 1CO (SPDT) | |
| Rated contact current | 10 A | |
| Coil voltage | 21 V DC | |
| Contact material | AgCdO | |
| Mounting type | PCB / socket mounting | |
| Terminal pitch | 5 mm | |
| Protection category | RT II |
Frequently Asked Questions
What is the Finder 40.51.9.021.2000 used for?
This relay is used for switching electrical loads in control systems, automation equipment and electronic applications.
What coil voltage does this relay require?
The Finder 40.51.9.021.2000 uses a 21 V DC coil supply.
What contact configuration does the relay have?
The relay features a 1 changeover contact (1CO / SPDT) configuration.
What is the contact rating of this relay?
The relay has a 10 A rated contact current.
How is this relay mounted?
The relay is designed for PCB mounting or use with compatible Finder sockets.
Trusted by Control System Designers
Finder miniature relays are widely used in industrial and electrical control applications where reliable switching, compact installation and proven performance are required.
