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20.21.8.048.4000 Finder Modular relay 1phase switch 1 NO AC 48V
Finder 20.21.8.048.4000 modular step relay with 48 V AC coil, 16 A switching rating and 1 NO contact configuration for impulse switching applications.
Why Choose the Finder 20.21.8.048.4000 Modular Step Relay?
The Finder 20.21.8.048.4000 is a compact modular step relay designed for reliable impulse switching and lighting control applications in residential, commercial and industrial electrical installations. Part of the Finder 20 Series, it provides bistable step switching operation with DIN rail mounting for straightforward integration into distribution boards and control panels.
This relay provides a practical solution for applications requiring multiple switching cycles from momentary push-button commands. Its compact modular housing, mechanical position indicator and integrated test button simplify installation, commissioning and maintenance in electrical systems.
With a 48 V AC coil supply, a 16 A switching rating and a 1 NO (SPST-NO) contact configuration, the Finder 20.21.8.048.4000 is suitable for lighting control, automation circuits and impulse switching applications.
Key Advantages
- Compact modular step relay for impulse switching applications.
- 16 A contact rating suitable for lighting and control loads.
- 48 V AC coil voltage for dedicated control applications.
- Space-saving 17.5 mm DIN rail mounting design.
- Mechanical indicator and test button simplify operation and maintenance.
- Reliable bistable switching reduces continuous coil power consumption.
Key Features
- Finder 20 Series modular step relay.
- Bistable impulse switching operation.
- 1 NO (SPST-NO) contact configuration.
- 16 A rated current.
- 48 V AC coil supply.
- 35 mm DIN rail mounting compatibility.
- Mechanical switch position indicator.
- Integrated test button.
Reliable Impulse Switching for Electrical Systems
Modular step relays such as the Finder 20.21.8.048.4000 allow electrical loads to be switched using momentary push buttons instead of conventional maintained switches. This makes them ideal for distributed lighting control and automation applications.
The Finder 20 Series is designed for installers and engineers requiring compact, dependable switching devices for control panels, distribution boards and building automation systems.
Typical Applications
- Lighting control systems.
- Corridor and stairwell lighting applications.
- Building automation systems.
- Electrical distribution boards.
- Industrial control circuits.
- Push-button operated switching systems.
Technical Specifications
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| Device Type | Latching / Impulse Relay | |
|---|---|---|
| Terminal Type | Screw | |
| Switching Current (A) | 16 A | |
| Load Voltage | 400 V AC | |
| Mounting Type | DIN rail | |
| Coil / Supply Voltage | 48 V AC | |
| Contacts | 2NO | |
| IP Rating | IP20 | |
| Manufacturer | Finder | |
| Series | 20 Series | |
| Model | 20.21.8.048.4000 | |
| Product type | Modular step relay | |
| Contact configuration | 1 NO (SPST-NO) | |
| Rated current | 16 A | |
| Maximum switching voltage | 400 V AC | |
| Maximum switching capacity | 6400 VA | |
| Coil voltage | 48 V AC | |
| Mounting type | 35 mm DIN rail mounting | |
| Connection type | Screw terminals | |
| Protection rating | IP20 |
Frequently Asked Questions
What is the Finder 20.21.8.048.4000 used for?
The Finder 20.21.8.048.4000 is a modular step relay used for impulse switching of electrical loads in lighting and automation applications.
What coil voltage does the Finder 20.21.8.048.4000 require?
The relay operates with a 48 V AC coil supply.
What current rating does the Finder 20.21.8.048.4000 have?
The relay has a rated switching current of 16 A.
How is the Finder 20.21.8.048.4000 mounted?
The relay is designed for 35 mm DIN rail mounting in distribution boards and control panels.
What contact configuration does the Finder 20.21.8.048.4000 provide?
The relay provides a 1 NO (SPST-NO) contact configuration.
Trusted by Electrical Installation Professionals
Finder modular step relays are widely used in electrical installations to provide reliable impulse switching, compact DIN rail integration and efficient control of lighting and automation systems.
