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26.04.8.024.4000 Finder relay 4 seq 2 phase switch 2NO AC 24V
Finder 26.04.8.024.4000 is a Series 26 electromechanical impulse step relay featuring a 24 V AC coil, two normally open 10 A contacts, mechanically maintained switching and compact installation for lighting control and building automation applications.
£9.62
Why Choose the Finder 26.04.8.024.4000 Step Relay?
The Finder 26.04.8.024.4000 is a compact and reliable 10 A electromechanical impulse step relay designed for lighting control, building automation and electrical installation applications. As part of the established Finder Series 26 step relay range, it provides convenient control of lighting and other electrical loads using momentary push-button signals.
Featuring a 24 V AC operating coil and two normally open (2 NO) contacts, this relay uses a mechanically maintained switching mechanism that changes contact state in response to successive electrical impulses. Unlike conventional monostable relays, the step relay retains its selected switching position after the control impulse ends, reducing the need for continuous coil energisation.
With a 10 A rated contact current, 250 V AC rated contact voltage and compact installation format, the Finder 26.04.8.024.4000 is suitable for residential, commercial and industrial lighting installations. Its box-clamp screw terminals and compact housing allow convenient installation behind suitable blanking plates or within electrical mounting enclosures.
Key Advantages
- Reliable 10 A electromechanical impulse relay for lighting and electrical switching applications.
- 24 V AC operating coil suitable for compatible low-voltage AC control circuits.
- Two normally open contacts (2 NO) provide two-pole switching functionality.
- Mechanically maintained step relay operation retains the selected contact state without continuous coil power.
- Allows lighting circuits to be controlled from multiple momentary push-button locations.
- Silver tin oxide (AgSnO2) contacts provide dependable switching performance.
- Compact construction suitable for installation in electrical mounting boxes.
- Box-clamp screw terminals support straightforward wiring and installation.
Key Features
- Finder Series 26 electromechanical step relay.
- 10 A rated contact current.
- 24 V AC nominal coil voltage.
- Two normally open (2 NO / DPST-NO) contacts.
- 250 V AC rated contact voltage.
- 2500 VA rated AC1 switching load.
- 500 VA rated AC15 switching load.
- 4.8 VA nominal AC coil consumption.
- Silver tin oxide (AgSnO2) contact material.
- Electromechanical impulse-operated switching mechanism.
- Mechanically maintained contact positions.
- Electrically separate coil and contact circuits.
- Multiple switching sequences within the Finder 26.04 operating arrangement.
- Box-clamp screw terminal connections.
- IP20 protection rating.
- Compact housing suitable for concealed electrical installations.
Reliable Impulse Switching for Lighting and Building Automation
The Finder 26.04.8.024.4000 operates through an electromechanical step-switching mechanism activated by momentary electrical impulses applied to its 24 V AC coil. Each control impulse advances the relay through its defined switching sequence, changing the state of the connected contacts. The mechanical mechanism maintains the selected position after the impulse ends, allowing electrical loads to remain switched without continuously energising the coil.
This operating principle is particularly useful for lighting installations controlled from several locations. Multiple momentary push-buttons can be connected to the control circuit, enabling convenient switching without conventional multi-way switch wiring. The Finder Series 26 range combines compact installation, dependable contact performance and mechanically maintained switching for residential, commercial and industrial electrical systems.
Typical Applications
- Residential lighting control systems.
- Commercial building lighting installations.
- Staircase and corridor lighting control.
- Multi-location lighting control using momentary push-buttons.
- Building automation and electrical management systems.
- Office, retail and hospitality lighting installations.
- Electrical switching in suitable mounting boxes and enclosures.
- Impulse-controlled switching of appropriately rated electrical loads.
Technical Specifications
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| Device Type | Latching / Impulse Relay | |
|---|---|---|
| Timing Function | Pulse | |
| Switching Current (A) | 10 A | |
| Terminal Type | Screw | |
| Manufacturer | Finder | |
| Series | Series 26 Step Relays | |
| Model | 26.04.8.024.4000 | |
| Product type | Electromechanical impulse step relay | |
| Relay operation | Mechanically maintained / bistable impulse switching | |
| Nominal coil voltage | 24 V AC | |
| Coil supply frequency | 50/60 Hz | |
| Nominal coil consumption | 4.8 VA at 50 Hz | |
| Coil operating voltage range at 50 Hz | 80–110% of nominal voltage | |
| Coil operating voltage range at 60 Hz | 85–110% of nominal voltage | |
| Number of contacts | 2 | |
| Contact configuration | 2 NO (DPST-NO) | |
| Rated contact current | 10 A | |
| Rated contact voltage | 250 V AC | |
| Rated AC1 switching load | 2500 VA | |
| Rated AC15 switching load | 500 VA | |
| Inrush current capability | 200 A under specified conditions | |
| Contact material | Silver tin oxide (AgSnO2) | |
| Minimum switching load | 500 mW | |
| Mechanical life | 300,000 cycles | |
| Electrical life at rated AC1 load | 100,000 cycles | |
| Minimum control impulse duration | 0.1 s | |
| Maximum control impulse duration | 1 h | |
| Operating temperature | −40 to +40 °C | |
| Protection rating | IP20 | |
| Mounting type | Installation in suitable electrical mounting boxes or behind blanking plates | |
| Terminal type | Box-clamp screw terminals | |
| Contact material compliance | Cadmium-free | |
| Applicable standard | EN 60669 |
Frequently Asked Questions
What is the Finder 26.04.8.024.4000 used for?
The Finder 26.04.8.024.4000 is a 10 A electromechanical impulse step relay used for lighting control and electrical switching applications, particularly where lights need to be operated from multiple momentary push-button locations.
What coil voltage does the Finder 26.04.8.024.4000 require?
The relay operates using a 24 V AC nominal coil supply at 50/60 Hz, making it suitable for compatible low-voltage AC control circuits.
How many contacts does this step relay have?
The Finder 26.04.8.024.4000 features two normally open (2 NO) contacts, providing two-pole switching through its mechanically maintained impulse mechanism.
What is the rated switching current of this relay?
The relay has a 10 A rated contact current and a 250 V AC rated contact voltage. The permissible load depends on the load characteristics and applicable switching ratings.
How does the Finder 26.04.8.024.4000 impulse relay work?
The relay changes its contact state when a momentary electrical impulse is applied to its coil. Its mechanically maintained switching mechanism retains the selected position after the impulse ends, eliminating the need for continuous coil energisation.
Can this relay control lighting from multiple locations?
Yes. The Finder 26.04.8.024.4000 can be operated using multiple momentary push-buttons connected to a suitable control circuit, making it useful for staircase, corridor and multi-location lighting installations.
Is the Finder 26.04.8.024.4000 a latching relay?
Yes. It is a mechanically maintained impulse relay that retains its selected contact position without continuous coil power. Subsequent control impulses advance the relay through its switching sequence.
Where is the Finder 26.04.8.024.4000 typically installed?
The relay is designed for installation in suitable electrical mounting boxes or behind blanking plates, allowing it to be integrated into residential, commercial and building automation wiring systems.
What contact material is used in this relay?
The Finder Series 26 uses silver tin oxide (AgSnO2) contact material, providing dependable switching performance for appropriately rated lighting and electrical loads.
Trusted by Electrical Contractors and Building Automation Professionals Worldwide
Finder Series 26 electromechanical step relays provide practical and dependable impulse switching solutions for electrical contractors, lighting installers, building automation engineers and maintenance professionals. The Finder 26.04.8.024.4000 combines 10 A two-pole switching, 24 V AC control and mechanically maintained operation for efficient lighting and electrical control installations.
