Why Choose the Finder 26.03.8.230.4000 Impulse Relay?
The Finder 26.03.8.230.4000 is a compact 10 A electromechanical impulse relay designed for lighting control, building electrical installations and multi-location switching applications. Part of the Finder 26 Series, this mechanically latching step relay enables electrical circuits to be controlled using momentary pushbuttons, providing a practical alternative to conventional multiway switching arrangements.
Featuring a 230 V AC operating coil and one normally open plus one normally closed contact (1 NO + 1 NC), the Finder 26.03.8.230.4000 provides complementary switching functions through a single impulse-operated mechanism. Each valid control impulse changes the relay's contact state, which remains mechanically latched after the impulse ends without requiring continuous coil energisation.
With a 10 A rated contact current, 250 V AC rated switching voltage and 2,500 VA AC1 resistive switching capacity, this relay is suitable for a range of electrical control and lighting applications. Its compact design, screw-terminal connections and panel or recessed mounting arrangement make it particularly useful for residential and commercial electrical installations.
Key Advantages
10 A impulse relay designed for lighting and electrical circuit control.
230 V AC operating coil suitable for compatible mains-voltage control circuits.
One normally open and one normally closed contact for complementary switching functions.
Mechanically latching operation maintains the selected contact state without continuous coil power.
Enables a lighting circuit to be controlled from multiple momentary pushbutton locations.
250 V AC rated switching voltage with a maximum switching voltage of 400 V AC.
2,500 VA AC1 switching capacity for suitable resistive loads.
4.5 VA nominal coil consumption at 50 Hz.
Screw-terminal connections simplify wiring and installation.
Compact construction suitable for panel or recessed mounting.
Cadmium-free silver nickel contacts provide dependable electromechanical switching.
Suitable for residential, commercial and building automation installations.
Key Features
Finder 26 Series electromechanical step relay.
26.03 configuration: 1 NO + 1 NC.
10 A rated contact current.
20 A maximum peak contact current.
230 V AC nominal coil voltage.
250 V AC rated contact voltage.
400 V AC maximum switching voltage.
2,500 VA AC1 rated resistive switching load.
500 VA AC15 rated switching load at 230 V AC.
4.5 VA rated coil consumption at 50 Hz.
Mechanically latching impulse-operated mechanism.
Two-position switching sequence.
Electrically separate coil and contact circuits.
Silver nickel (AgNi) contact material.
IP20 protection rating.
Panel or recessed mounting with screw-terminal connections.
Suitable for conventional momentary pushbutton control.
Efficient Multi-Location Lighting Control with Mechanical Latching
The Finder 26.03.8.230.4000 uses an electromechanical stepping mechanism to control electrical circuits through momentary impulses. When a suitable signal is applied to its 230 V AC coil, the internal mechanism advances to the next switching position. Once the impulse ends, the relay remains mechanically latched in that position until another valid control impulse is received.
The 1 NO + 1 NC contact configuration provides two complementary switching states. In one position, the normally open contact is closed and the normally closed contact is open. Following the next impulse, the contact states reverse. This makes the Finder 26.03 suitable for applications requiring alternate switching of two electrical circuits or a complementary control indication.
In a typical lighting installation, several momentary pushbuttons can be connected to the relay's control circuit. Operating any pushbutton changes the relay state, allowing the lighting function to be controlled from different locations without complex conventional multiway switch wiring. The mechanical latching arrangement also means the coil does not need to remain energised to maintain the selected contact position.
The relay's compact construction is suited to installation within an appropriately sized electrical mounting box or enclosure. Correct selection of conductor sizes, circuit protection and switching loads is essential, particularly when controlling LED drivers or other loads with significant inrush current.
Typical Applications
Residential lighting control installations.
Commercial building lighting systems.
Multi-location lighting control using momentary pushbuttons.
Corridor and stairwell lighting circuits.
Hallways, landings and communal lighting installations.
Building automation and electrical control systems.
Complementary switching of two electrical circuits.
Auxiliary electrical load control.
Lighting refurbishment and electrical installation upgrades.
Panel-mounted and recessed electrical control assemblies.
Technical Specifications
Tick the specs you need, then view products that match.
Timing Function
Pulse
Switching Current (A)
10 A
Load Voltage
400 V AC
Terminal Type
Screw
Device Type
Single-function timer
Manufacturer
Finder
Series
26 Series
Model
26.03.8.230.4000
Product type
Electromechanical impulse / step relay
Relay operation
Mechanically latching, impulse-operated
Number of contacts
2
Contact configuration
1 NO + 1 NC (SPST-NO + SPST-NC)
Switching sequence
Two-position impulse switching
Rated contact current
10 A
Maximum peak contact current
20 A
Rated switching voltage
250 V AC
Maximum switching voltage
400 V AC
Rated resistive load (AC1)
2,500 VA
Rated inductive load (AC15)
500 VA at 230 V AC
Incandescent / halogen lamp rating
800 W at 230 V AC
Fluorescent lamp rating with electronic ballast
400 W at 230 V AC
Fluorescent lamp rating with electromechanical ballast
360 W at 230 V AC
Compact fluorescent lamp rating
200 W at 230 V AC
LED lamp rating
200 W at 230 V AC
Minimum switching load
1,000 mW (10 V / 10 mA)
Contact material
Silver nickel (AgNi), cadmium-free
Nominal coil voltage
230 V AC
Coil supply type
AC
Nominal coil frequency
50 Hz
Rated coil consumption
4.5 VA at 50 Hz
Coil operating range
80–110% of nominal voltage at 50 Hz
Minimum control impulse duration
0.1 s
Maximum control impulse duration
1 h, according to EN 60669
Coil-to-contact impulse withstand voltage
4 kV (1.2/50 µs)
Mechanical life
300,000 operations
Electrical life
100,000 operations at rated AC1 load
Operating temperature
−40 to +40 °C
Protection rating
IP20
Connection type
Screw terminals
Mounting arrangement
Panel or recessed mounting in a suitable electrical enclosure
Approximate dimensions
46.6 × 45 × 22 mm
Typical application
Lighting control and multi-location pushbutton switching
Frequently Asked Questions
What is the Finder 26.03.8.230.4000 used for?
The Finder 26.03.8.230.4000 is an electromechanical impulse relay used for lighting control and electrical switching applications. It allows connected circuits to change state in response to momentary pushbutton signals.
What coil voltage does the Finder 26.03.8.230.4000 require?
The relay uses a 230 V AC nominal operating coil, rated at 50 Hz. The control circuit must provide a compatible supply, and the coil voltage should not be confused with the separate contact switching voltage.
What is the contact configuration of the Finder 26.03.8.230.4000?
The relay features one normally open and one normally closed contact (1 NO + 1 NC). These contacts provide complementary switching states as the relay advances through its impulse-operated sequence.
Does the Finder 26.03.8.230.4000 need continuous power to stay switched?
No. The Finder 26.03 uses a mechanically latching mechanism, so the contacts remain in their selected position after the control impulse ends. A subsequent valid impulse changes the contact state again.
Can the Finder 26.03.8.230.4000 be used with LED lighting?
Yes. The Finder 26 Series specifies a nominal 200 W LED lamp rating at 230 V AC for the standard relay configuration. The actual permitted load depends on the LED drivers, switching inrush current and installation conditions, so the connected lighting equipment should be checked against the relay ratings.
Trusted by Electrical Installers and Building Automation Professionals
Finder 26 Series impulse relays provide practical electromechanical switching solutions for residential and commercial lighting installations. Combining compact construction, mechanically latching operation and flexible pushbutton control, the range supports electrical contractors, building services engineers and automation professionals seeking dependable multi-location switching.
Timing Function
Pulse
Switching Current (A)
10 A
Load Voltage
400 V AC
Terminal Type
Screw
Device Type
Single-function timer
Manufacturer
Finder
Series
26 Series
Model
26.03.8.230.4000
Product type
Electromechanical impulse / step relay
Relay operation
Mechanically latching, impulse-operated
Number of contacts
2
Contact configuration
1 NO + 1 NC (SPST-NO + SPST-NC)
Switching sequence
Two-position impulse switching
Rated contact current
10 A
Maximum peak contact current
20 A
Rated switching voltage
250 V AC
Maximum switching voltage
400 V AC
Rated resistive load (AC1)
2,500 VA
Rated inductive load (AC15)
500 VA at 230 V AC
Incandescent / halogen lamp rating
800 W at 230 V AC
Fluorescent lamp rating with electronic ballast
400 W at 230 V AC
Fluorescent lamp rating with electromechanical ballast
360 W at 230 V AC
Compact fluorescent lamp rating
200 W at 230 V AC
LED lamp rating
200 W at 230 V AC
Minimum switching load
1,000 mW (10 V / 10 mA)
Contact material
Silver nickel (AgNi), cadmium-free
Nominal coil voltage
230 V AC
Coil supply type
AC
Nominal coil frequency
50 Hz
Rated coil consumption
4.5 VA at 50 Hz
Coil operating range
80–110% of nominal voltage at 50 Hz
Minimum control impulse duration
0.1 s
Maximum control impulse duration
1 h, according to EN 60669
Coil-to-contact impulse withstand voltage
4 kV (1.2/50 µs)
Mechanical life
300,000 operations
Electrical life
100,000 operations at rated AC1 load
Operating temperature
−40 to +40 °C
Protection rating
IP20
Connection type
Screw terminals
Mounting arrangement
Panel or recessed mounting in a suitable electrical enclosure
Approximate dimensions
46.6 × 45 × 22 mm
Typical application
Lighting control and multi-location pushbutton switching
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