Finder 20.23.9.048.4000 is a 16 A modular step relay with one normally open and one normally closed silver tin oxide contact, a 48 V DC coil and 35 mm DIN-rail mounting.
£25.59
The Finder 20.23.9.048.4000 is a compact and dependable modular step relay designed for impulse-controlled switching in lighting, building automation and electrical distribution applications. As part of the Finder Series 20, it changes contact state whenever its coil receives a momentary control pulse.
Its electromechanical latching operation enables electrical loads to be controlled from multiple momentary push-buttons without requiring the coil to remain continuously energised. A mechanical position indicator and test button support convenient inspection and manual operation during installation, commissioning and maintenance.
With one normally open and one normally closed contact rated at 16 A, a 48 V DC coil and silver tin oxide contacts, the 20.23.9.048.4000 provides versatile and dependable load switching. Its 17.4 mm-wide DIN-rail enclosure and screw terminals simplify installation inside distribution boards and control panels.
A modular step relay changes its contact state each time a momentary voltage pulse is applied to the coil. This allows electrical loads to be operated from several push-button locations while avoiding complex conventional multi-way switching arrangements.
The Finder Series 20 is designed for installation in modular distribution equipment. Its latching mechanism, complementary contact arrangement, silver tin oxide contacts and manual test facility make the 20.23.9.048.4000 suitable for building-control systems requiring reliable 48 V DC impulse operation.
| Manufacturer | Finder |
|---|---|
| Series | Series 20 |
| Model | 20.23.9.048.4000 |
| Product type | Modular step relay |
| Relay function | Impulse / latching |
| Number of steps | 2 |
| Contact configuration | 1 NO + 1 NC |
| Contact form | SPST-NO + SPST-NC |
| Rated current | 16 A |
| Maximum peak current | 30 A |
| Rated contact voltage | 250 V AC |
| Maximum switching voltage | 400 V AC |
| Rated load, AC-1 | 4000 VA |
| Rated load, AC-15 at 230 V AC | 750 VA |
| Coil voltage | 48 V DC |
| Coil operating range | 43.2–52.8 V DC |
| Coil resistance | 440 Ω |
| Coil current | 110 mA |
| Rated coil power | 5 W |
| Contact material | Silver tin oxide (AgSnO2) |
| Minimum / maximum impulse duration | 0.1 s / 1 h |
| Mechanical life | 300,000 cycles |
| Electrical life at rated AC-1 load | 100,000 cycles |
| Coil-to-contact impulse withstand voltage | 4 kV |
| Operating temperature | −40 to +40 °C |
| Protection rating | IP20 |
| Width | 17.4 mm |
| Mounting type | 35 mm DIN rail |
| Terminal type | Screw terminals |
It is used for impulse-controlled switching of lighting and other electrical loads from momentary push-buttons in building and industrial control systems.
The relay has one normally open and one normally closed contact, providing complementary switching outputs.
The Finder 20.23.9.048.4000 has a rated current of 16 A and a maximum peak current of 30 A.
This exact variant has a 48 V DC coil with an operating range of 43.2–52.8 V DC.
The relay uses silver tin oxide contacts designed for dependable switching of compatible lighting and electrical loads.
Finder Series 20 modular step relays are widely used by electrical installers, panel builders and building-control professionals for dependable impulse switching and space-efficient DIN-rail installation.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...