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40.61.9.021.1000 Finder Miniature PCB relay 1pole 16A DC 21V
40.61.9.021.1000 Finder Miniature PCB relay 1pole 16A DC 21V.
Overview
The Finder 40.61.9.021.1000 is a compact PCB-mounted electromagnetic relay from the established Finder 40 Series, designed for reliable switching in industrial automation, electronic control equipment and electrical interface circuits. Featuring a 21 V DC coil and a single changeover contact (1 CO / SPDT), this relay provides electrically isolated switching between control electronics and connected load circuits.
The Finder 40.61 relay family is known for its compact construction, PCB terminal arrangement and versatile switching capabilities. The 40.61.9.021.1000 combines a DC-operated electromagnetic mechanism with a changeover contact configuration, making it suitable for equipment where a control signal must switch between normally open and normally closed circuit paths.
Designed for integration into printed circuit boards and compatible relay interface assemblies, this relay is a practical choice for original equipment manufacturers, automation engineers and maintenance professionals requiring a compact, replaceable electromechanical switching component.
Key Advantages
- Compact PCB relay: Designed for space-efficient integration into electronic control equipment.
- 21 V DC coil: Provides electromagnetic operation from the specified DC control supply.
- Single changeover contact: Offers normally open and normally closed switching functions through one common contact.
- Industrial switching capability: Suitable for appropriately rated control and load circuits.
- Electrical isolation: Separates the coil control circuit from the switched contact circuit.
- Monostable operation: Automatically returns to its normal contact position when coil power is removed.
- PCB mounting: Supports direct installation into suitably designed printed circuit boards.
- Versatile applications: Suitable for automation interfaces, electronic equipment and machinery control systems.
- Finder 40 Series design: Part of an established family of miniature industrial relays.
- Maintenance suitability: Provides a manufacturer-identified component for compatible equipment repairs and replacement.
Key Features
- Finder 40 Series miniature electromagnetic relay.
- Manufacturer part number 40.61.9.021.1000.
- 40.61 relay configuration.
- Single changeover contact (1 CO / SPDT).
- 21 V DC nominal coil voltage.
- DC electromagnetic operating mechanism.
- Monostable, non-latching operation.
- Compact relay housing for electronic assemblies.
- PCB terminal configuration.
- Separate coil and contact circuits.
- Suitable for control logic and interface switching.
- Designed for integration into industrial and electronic equipment.
- Compatible with appropriately specified relay interface arrangements.
Reliable Electromagnetic Switching for Electronic Control Systems
The Finder 40.61.9.021.1000 operates by energising its 21 V DC coil, which actuates the relay's internal electromagnetic mechanism. When the coil is powered, the common contact transfers from the normally closed terminal to the normally open terminal. Removing the coil supply allows the contacts to return to their normal state. This provides a straightforward method of controlling an external circuit using an independent electrical signal.
The relay's compact PCB construction makes it suitable for electronic control boards, interface circuits and equipment where installation space is limited. Correct application requires consideration of the connected load, contact current, operating voltage, switching frequency and coil drive characteristics. Appropriate suppression of inductive loads and coil transients can help protect the associated control electronics and improve service reliability.
Typical Applications
- Industrial automation: Switching control signals and auxiliary electrical circuits.
- PCB control assemblies: Electromechanical switching within electronic equipment.
- Machinery control: Interface switching between electronic controllers and external circuits.
- Control panels: Auxiliary relay functions in industrial electrical systems.
- OEM equipment: Integration into purpose-designed electronic control boards.
- Building automation: Switching functions in appropriately designed building control equipment.
- Electronic interfaces: Providing galvanic separation between control and switched circuits.
- Equipment maintenance: Replacement of compatible Finder 40.61 relay components.
Technical Specifications
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| Device Type | Plug-in Relay | |
|---|---|---|
| Terminal Type | PCB / pins | |
| Mounting Type | PCB | |
| Manufacturer | Finder | |
| Product series | 40 Series | |
| Manufacturer part number | 40.61.9.021.1000 | |
| Relay type | 40.61 | |
| Product category | Miniature electromagnetic power relay | |
| Contact configuration | 1 CO / SPDT / 1 Form C | |
| Number of poles | 1 | |
| Nominal coil voltage | 21 V DC | |
| Coil supply type | DC | |
| Operating mechanism | Monostable electromagnetic | |
| Mounting type | Printed circuit board | |
| Connection type | PCB terminals | |
| Contact operation | Changeover between normally closed and normally open circuits | |
| Primary application | Electronic control and industrial automation switching |
Frequently Asked Questions
What is the Finder 40.61.9.021.1000 used for?
The Finder 40.61.9.021.1000 is a miniature electromagnetic relay used for switching electrical circuits in industrial automation, electronic control boards, machinery and interface equipment. Its single changeover contact allows a control signal to select between two circuit paths.
What coil voltage does the Finder 40.61.9.021.1000 require?
The relay has a 21 V DC nominal coil voltage. It should be operated using a suitably regulated control supply that meets the manufacturer's requirements for the exact relay variant.
What contact configuration does the Finder 40.61.9.021.1000 have?
The relay features one changeover contact (1 CO / SPDT), consisting of a common terminal, a normally open contact and a normally closed contact. The contact changes position when the relay coil is energised.
Is the Finder 40.61.9.021.1000 a latching relay?
No. The Finder 40.61.9.021.1000 uses a monostable electromagnetic operating mechanism. Its contacts return to their normal position when the coil supply is removed.
Can the Finder 40.61.9.021.1000 be mounted on a PCB?
Yes. The Finder 40.61 relay family is designed for printed circuit board mounting. The PCB footprint, terminal arrangement and electrical ratings should be checked against the manufacturer's documentation before installation or replacement.
Trusted by Industrial Automation and Electronic Control Engineers
Finder 40 Series miniature relays provide compact electromechanical switching solutions for industrial automation, electronic control assemblies and machinery interfaces, helping engineers integrate reliable relay functionality into space-conscious electrical designs.
