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20.21.8.240.4000 Finder Modular relay 1phase switch 1 NO AC 240V
Finder 20.21.8.240.4000 digital programmable time switch with 240 V AC supply and 16 A switching capacity for automated electrical control applications.
Why Choose the Finder 20.21.8.240.4000 Modular Time Switch?
The Finder 20.21.8.240.4000 is a reliable and compact digital programmable time switch designed for automatic control of lighting, heating, ventilation and electrical equipment in residential, commercial and industrial applications. As part of the advanced Finder 20 Series, this time switch provides accurate scheduling control and dependable operation for energy management systems.
This programmable time switch enables users to automate electrical loads according to customised time schedules, helping improve efficiency and reduce unnecessary energy consumption. Its modular DIN rail mounting format allows straightforward installation inside electrical distribution boards and control cabinets.
With a 240 V AC supply and a 16 A switching capacity, the Finder 20.21.8.240.4000 is suitable for controlling lighting circuits, heating systems, pumps and other electrical loads where reliable timed operation is required.
Key Advantages
- Compact programmable time switch for automatic electrical control.
- 240 V AC operating supply suitable for standard electrical installations.
- 16 A switching capacity for controlling a wide range of loads.
- Improves energy efficiency through scheduled switching operation.
- DIN rail mounting design for easy panel installation.
- Reliable Finder technology for professional automation applications.
Key Features
- Finder 20 Series programmable time switch.
- Daily and weekly programming capability.
- 240 V AC supply voltage.
- 16 A contact rating.
- 1 changeover contact output.
- Digital scheduling control for automated switching.
- Modular DIN rail mounting construction.
- Suitable for lighting and building automation systems.
Efficient Time-Based Control for Electrical Systems
Programmable time switches such as the Finder 20.21.8.240.4000 allow electrical equipment to operate only when required. This helps optimise energy usage while maintaining accurate and automatic control of connected circuits.
The Finder 20 Series is designed for professional electrical installations, providing reliable switching performance for building automation, lighting control and industrial applications where precise timing is essential.
Typical Applications
- Lighting automation and control systems.
- Heating and ventilation scheduling.
- Building automation installations.
- Pumps and electrical equipment control.
- Energy management systems.
- Industrial and commercial electrical panels.
Technical Specifications
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| Device Type | Latching / Impulse Relay | |
|---|---|---|
| Switching Current (A) | 16 A | |
| Mounting Type | DIN rail | |
| Coil / Supply Voltage | 240 V AC | |
| Contacts | 1 C/O | |
| IP Rating | IP20 | |
| Manufacturer | Finder | |
| Series | 20 Series | |
| Model | 20.21.8.240.4000 | |
| Product type | Digital programmable time switch | |
| Supply voltage | 240 V AC | |
| Contact configuration | 1 changeover contact | |
| Rated contact current | 16 A | |
| Mounting type | DIN rail mounting | |
| Programming type | Digital time scheduling | |
| Protection rating | IP20 |
Frequently Asked Questions
What is the Finder 20.21.8.240.4000 used for?
This programmable time switch is used to automatically control electrical loads according to programmed schedules.
What supply voltage does this time switch require?
The Finder 20.21.8.240.4000 operates from a 240 V AC supply.
What is the switching capacity of this device?
The time switch provides a maximum contact rating of 16 A.
How is the time switch installed?
The device is designed for DIN rail mounting inside electrical distribution boards and control cabinets.
What type of output contact is included?
The Finder 20.21.8.240.4000 includes a 1 changeover contact output for flexible circuit control.
Trusted by Electrical Professionals Worldwide
Finder 20 Series time switches are widely used by electrical installers and automation professionals to deliver accurate scheduling, reliable switching and efficient energy management.
