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Finder 22.21.9.024.4000 – 22 Series Modular monostable relays
Finder 22.21.9.024.4000 – 22 Series Modular monostable relays.
£20.11
Why Choose the Finder 22.21.9.024.4000 Modular Contactor?
The Finder 22.21.9.024.4000 is a compact and reliable 20 A modular contactor with a 24 V DC coil, designed for switching electrical loads in industrial automation, building management and electrical distribution systems. As part of the Finder Series 22 modular contactor range, this device provides dependable electromechanical switching for applications requiring remote control of electrical circuits.
Featuring a single normally open (SPST-NO) contact, the 22.21.9.024.4000 operates as a monostable relay, energising its output contact when the control coil is supplied and returning to its normal state when the coil is de-energised. Its silver tin oxide (AgSnO) contact material provides durable switching performance, while the integrated test button assists with commissioning and maintenance.
With a 20 A rated contact current, 24 V DC control coil and 35 mm DIN rail mounting, the Finder 22.21.9.024.4000 is well suited to electrical control cabinets, building automation panels and industrial switching installations. Its narrow modular construction helps conserve valuable installation space.
Key Advantages
- Reliable 20 A modular contactor for electrical load switching.
- 24 V DC coil suitable for low-voltage control systems.
- Single normally open contact for straightforward circuit control.
- Compact 35 mm DIN rail mounting for convenient installation.
- Silver tin oxide contacts provide durable switching performance.
- Integrated test button simplifies functional testing and commissioning.
- Monostable operation enables automatic contact release when coil power is removed.
- Screw terminal connections support secure electrical wiring.
Key Features
- Finder Series 22 modular contactor.
- 20 A rated contact current.
- 24 V DC nominal coil voltage.
- SPST-NO (1 Form A) contact configuration.
- Monostable, non-latching operation.
- 250 V AC rated contact voltage.
- 400 V AC maximum switching voltage.
- 460 Ω nominal coil resistance.
- Silver tin oxide (AgSnO) contact material.
- 15 ms operate time and 8 ms release time.
- Integrated manual test button and identification label.
- DIN rail mounting with screw terminal connections.
Reliable Electrical Switching for Automation and Building Control
Modular contactors such as the Finder 22.21.9.024.4000 enable electrical loads to be switched remotely using a separate low-voltage control circuit. When the 24 V DC coil is energised, the normally open contact closes, allowing current to flow through the connected load. When the control voltage is removed, the contact returns to its normally open position.
The Finder Series 22 range is designed for integration into electrical distribution boards and automation control panels. Its compact DIN rail construction, durable contact materials and accessible screw terminals support efficient installation and dependable operation in lighting control, HVAC equipment and industrial electrical switching systems. The integrated test button provides an additional convenience during installation and maintenance.
Typical Applications
- Industrial automation and electrical control panels.
- Commercial and industrial lighting control systems.
- Building management and automation installations.
- HVAC equipment and ventilation control circuits.
- Electrical distribution boards and modular switchgear assemblies.
- Remote switching of suitable electrical loads.
- PLC-controlled electrical switching applications.
- OEM machinery and industrial control equipment.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Device Type | Modular contactor | |
| Coil Type | DC | |
| Coil Voltage Range | 24 V | |
| Manufacturer | Finder | |
| Series | 22 Series | |
| Model | 22.21.9.024.4000 | |
| Product type | Modular contactor / power relay | |
| Relay operation | Monostable, non-latching | |
| Contact configuration | SPST-NO (1 Form A) | |
| Number of poles | 1 | |
| Rated contact current | 20 A | |
| Rated contact voltage | 250 V AC | |
| Maximum switching voltage | 400 V AC | |
| Nominal coil voltage | 24 V DC | |
| Coil resistance | 460 Ω | |
| Nominal coil current | 52.2 mA | |
| Minimum operate voltage | 21.6 V DC | |
| Operate time | 15 ms | |
| Release time | 8 ms | |
| Contact material | Silver tin oxide (AgSnO) | |
| Mounting type | 35 mm DIN rail | |
| Terminal type | Screw terminals | |
| Operating temperature | −40 to +40 °C | |
| Manual test function | Integrated test button | |
| Identification | Identification label | |
| Dimensions (H × W × D) | approx. 84 × 17.4 × 58.4 mm | |
| Compliance | CE, EAC |
Frequently Asked Questions
What is the Finder 22.21.9.024.4000 used for?
The Finder 22.21.9.024.4000 is a 20 A modular contactor used for remote switching of electrical loads in industrial automation, lighting control, HVAC systems and building management installations.
What coil voltage does the Finder 22.21.9.024.4000 require?
This modular contactor operates using a 24 V DC control coil, making it suitable for integration with compatible low-voltage automation and control circuits.
What is the contact rating of this modular contactor?
The Finder 22.21.9.024.4000 has a 20 A rated contact current and a 250 V AC rated contact voltage. The permitted load depends on the electrical load type and applicable switching category.
What contact configuration does the Finder 22.21.9.024.4000 have?
The contactor features a single-pole, single-throw normally open (SPST-NO) contact, also known as a 1 Form A configuration. The contact closes when the coil is energised.
Can the Finder 22.21.9.024.4000 be mounted on a DIN rail?
Yes. The contactor is designed for installation on a standard 35 mm DIN rail, allowing straightforward mounting inside electrical control panels and distribution enclosures.
Does the Finder 22.21.9.024.4000 include a test button?
Yes. This model includes an integrated test button that assists with checking relay operation during commissioning and maintenance.
Is the Finder 22.21.9.024.4000 a latching or non-latching contactor?
The Finder 22.21.9.024.4000 is a monostable, non-latching contactor. Its normally open contact closes when the coil is energised and returns to the open position when the coil supply is removed.
Trusted by Electrical Installers and Automation Engineers Worldwide
Finder Series 22 modular contactors are designed to provide reliable electrical switching for industrial automation, commercial buildings and electrical distribution systems. With compact DIN rail construction, durable switching contacts and straightforward control integration, the Finder 22.21.9.024.4000 offers a practical solution for electrical installers, panel builders and automation engineers.
