Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
20.23.9.048.4000 Finder step relay 2 phase switch 1 NC+1NO DC 48V
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.
Why Choose the Finder 20.23.9.048.4000 Modular Step Relay?
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.
Key Advantages
- Impulse-operated modular step relay for centralised load control.
- One normally open and one normally closed 16 A contact.
- 48 V DC control coil for low-voltage control systems.
- Silver tin oxide contacts provide dependable load switching.
- Latching operation does not require continuous coil energisation.
- Compact DIN-rail format supports space-efficient panel installation.
Key Features
- Finder Series 20 modular step relay.
- 1 NO + 1 NC contact configuration.
- 16 A rated current and 30 A maximum peak current.
- 48 V DC coil.
- 4000 VA AC-1 rated load.
- Silver tin oxide contact material.
- Integrated mechanical indicator and test button.
- Direct mounting on a 35 mm DIN rail.
Efficient Impulse Control for Lighting and Electrical Loads
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.
Typical Applications
- Lighting circuits controlled from multiple push-buttons.
- Residential and commercial building automation.
- Stairwell, corridor and communal-area lighting.
- Low-voltage control and signalling circuits.
- Electrical distribution boards.
- Industrial control panels.
Technical Specifications
Tick the specs you need, then view products that match.
| Device Type | Latching / Impulse Relay | |
|---|---|---|
| Terminal Type | Screw | |
| Load Voltage | 400 V AC | |
| Mounting Type | DIN rail | |
| Switching Current (A) | 16 A | |
| Coil / Supply Voltage | 48 V DC | |
| Contacts | 1NO + 1NC | |
| IP Rating | IP20 | |
| 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 |
Frequently Asked Questions
What is the Finder 20.23.9.048.4000 used for?
It is used for impulse-controlled switching of lighting and other electrical loads from momentary push-buttons in building and industrial control systems.
What contact configuration does this step relay have?
The relay has one normally open and one normally closed contact, providing complementary switching outputs.
What is the contact current rating?
The Finder 20.23.9.048.4000 has a rated current of 16 A and a maximum peak current of 30 A.
What coil voltage does the relay require?
This exact variant has a 48 V DC coil with an operating range of 43.2–52.8 V DC.
What contact material is used?
The relay uses silver tin oxide contacts designed for dependable switching of compatible lighting and electrical loads.
Trusted by Electrical Installers Worldwide
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.
