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40.51.7.021.2001 Finder Miniature PCB relay 1pole 10A DC 21V
Finder 40.51.7.021.2001 miniature electromechanical relay with a 21 V AC/DC coil and 10 A changeover contact rating designed for industrial control and automation applications.
Why Choose the Finder 40.51.7.021.2001 Miniature Relay?
The Finder 40.51.7.021.2001 is a compact and reliable electromechanical miniature relay designed for switching and control applications in industrial automation, electrical panels and electronic equipment. As part of the trusted Finder 40.51 relay series, it provides dependable switching performance with a 21 V AC/DC coil and a space-saving design suitable for PCB or socket mounting.
This relay combines reliable coil operation with a robust contact system, making it suitable for control circuits where electrical isolation, compact installation and long service life are required. The Finder 40.51 series is widely used in automation systems, industrial controls and OEM equipment requiring dependable interface switching.
With a 21 V AC/DC coil and a 10 A contact rating, the 40.51.7.021.2001 is suitable for switching electrical loads in control panels, machinery and electronic control systems where reliable relay operation is essential.
Key Advantages
- Compact miniature electromechanical relay for industrial control applications.
- 21 V AC/DC coil suitable for flexible control circuit applications.
- 10 A switching capability for reliable load control.
- Single pole changeover contact configuration for flexible switching.
- Compatible with PCB and relay socket mounting solutions.
- Reliable Finder construction for automation and electrical equipment.
Key Features
- Finder 40.51 miniature relay series.
- 21 V AC/DC coil voltage.
- 10 A contact current rating.
- SPDT changeover contact configuration.
- AgNi contact material for dependable switching performance.
- Monostable relay operation.
- Low power coil design.
- Compact housing for space-saving installations.
Reliable Switching for Industrial Control Systems
Electromechanical relays such as the Finder 40.51.7.021.2001 provide electrical isolation between control signals and switched loads, allowing automation equipment and electronic systems to safely control external circuits.
The Finder 40.51 series is designed for engineers requiring compact, dependable switching components. Its miniature format, flexible coil options and reliable contact technology allow seamless integration into modern industrial and electrical control systems.
Typical Applications
- Industrial automation control panels.
- Machine control and OEM equipment.
- PLC interface and switching circuits.
- Building automation systems.
- Electronic control equipment.
- General purpose industrial switching applications.
Technical Specifications
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| Device Type | Plug-in Relay | |
|---|---|---|
| Mounting Type | PCB, Plug-in socket | |
| Switching Current (A) | 10 A | |
| Coil / Supply Voltage | 21 V AC, 21 V DC | |
| Contacts | 1 C/O | |
| Manufacturer | Finder | |
| Series | 40.51 Miniature Relays | |
| Model | 40.51.7.021.2001 | |
| Product type | Electromechanical miniature relay | |
| Coil voltage | 21 V AC/DC | |
| Contact configuration | SPDT (1 changeover contact) | |
| Contact current rating | 10 A | |
| AC contact rating | 10 A / 250 V AC | |
| Contact material | AgNi | |
| Mounting type | PCB / socket mounting | |
| Operation | Monostable | |
| Protection category | RT II | |
| Dimensions (H × W × D) | approx. 25 × 12.4 × 29 mm |
Frequently Asked Questions
What is the Finder 40.51.7.021.2001 used for?
The relay is used for switching electrical loads in industrial automation, control panels and electronic control systems.
What coil voltage does this relay require?
The Finder 40.51.7.021.2001 uses a 21 V AC/DC coil.
What current can the relay switch?
The relay has a contact rating of up to 10 A depending on the application and load type.
What type of contacts does the relay have?
The relay features a SPDT changeover contact configuration with AgNi contact material.
Where is this relay typically installed?
The relay is commonly installed in industrial control equipment, PCB applications and electrical automation systems.
Trusted by Automation Engineers Worldwide
Finder miniature relays are widely used in industrial automation and electrical control applications where compact design, reliable switching and long operational life are required.
