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20.21.8.230.0000 Finder Modular relay 1phase switch 1 NO AC 230V
Finder 20.21.8.230.0000 modular step relay with 16 A switching capacity and 230 V AC coil supply designed for DIN rail mounted lighting and electrical control applications.
£19.50
Why Choose the Finder 20.21.8.230.0000 Modular Step Relay?
The Finder 20.21.8.230.0000 is a compact and reliable modular step relay designed for electrical switching and lighting control applications in residential, commercial and industrial installations. As part of the trusted Finder 20 Series modular step relay range, it provides dependable impulse switching from multiple pushbuttons while offering simple DIN rail installation.
This relay provides efficient load control through a bistable impulse switching mechanism, allowing a circuit to be switched on and off using momentary control inputs. Its modular design, integrated test button and mechanical position indicator make installation, commissioning and maintenance straightforward.
With a 230 V AC coil supply and a 16 A switching rating, the Finder 20.21.8.230.0000 is suitable for lighting control, automation systems and general electrical switching applications where reliable step operation is required.
Key Advantages
- Compact modular step relay for DIN rail mounting.
- 16 A contact rating suitable for lighting and load switching applications.
- 230 V AC coil voltage for standard mains control systems.
- Bistable impulse operation reduces continuous coil energisation.
- Integrated mechanical indicator and test button for easy status checking.
- Suitable for residential, commercial and industrial electrical installations.
Key Features
- Finder 20 Series modular step relay.
- 1 normally open (NO) contact.
- 16 A switching current rating.
- 230 V AC coil supply.
- DIN rail mounting for control panels and distribution boards.
- Impulse and latching relay operation.
- Silver nickel (AgNi) contact material for reliable switching.
- Mechanical position indicator and front test button.
Reliable Switching Control for Electrical Installations
Impulse relays such as the Finder 20.21.8.230.0000 provide a practical solution for controlling lighting and electrical loads from multiple pushbutton locations. The bistable switching design maintains the selected state without requiring continuous coil power, improving efficiency and simplifying wiring.
The Finder 20 Series is widely used by electricians, installers and automation professionals who require compact DIN rail components with reliable switching performance. Its modular format allows easy integration into distribution boards and control cabinets.
Typical Applications
- Stairwell and corridor lighting control.
- Commercial building lighting systems.
- Residential lighting automation.
- Distribution boards and electrical panels.
- Industrial control and switching applications.
- General-purpose load switching systems.
Technical Specifications
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| Device Type | Latching / Impulse Relay | |
|---|---|---|
| Timing Function | Pulse | |
| Switching Current (A) | 16 A | |
| Load Voltage | 400 V AC | |
| Mounting Type | DIN rail | |
| Terminal Type | Screw | |
| Coil / Supply Voltage | 230 V AC | |
| Contacts | 2NO | |
| IP Rating | IP20 | |
| Manufacturer | Finder | |
| Series | 20 Series Modular Step Relays | |
| Model | 20.21.8.230.0000 | |
| Product type | Modular step relay / impulse relay | |
| Function | Bistable impulse switching | |
| Contact configuration | 1NO / SPST-NO | |
| Rated switching current | 16 A | |
| Coil voltage | 230 V AC | |
| Frequency | 50 / 60 Hz | |
| Maximum switching voltage | 400 V AC | |
| Contact material | Silver Nickel (AgNi) | |
| Mounting type | 35 mm DIN rail mounting | |
| Protection rating | IP20 | |
| Operating temperature | -40 to +40 °C | |
| Terminal type | Screw terminals | |
| Dimensions | approx. 58.4 × 17.4 × 58.4 mm |
Frequently Asked Questions
What is the Finder 20.21.8.230.0000 used for?
The Finder 20.21.8.230.0000 is used for impulse switching of lighting and electrical loads from one or more pushbutton controls.
What type of relay is this product?
This product is a modular step relay with bistable impulse operation, featuring one normally open contact.
What coil voltage does the relay require?
The Finder 20.21.8.230.0000 operates with a 230 V AC coil supply.
What is the switching capacity of this relay?
The relay has a 16 A switching current rating and can switch loads up to 400 V AC.
How is this relay installed?
The relay is designed for mounting on a standard 35 mm DIN rail inside electrical distribution boards and control panels.
Trusted by Electrical Installers Worldwide
Finder modular step relays are widely used by electrical installers and automation professionals to provide reliable switching control, compact installation and dependable operation in modern electrical systems.
