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Finder 27.22.8.230.4000 – 27 Series Step Relays
Finder 27.22.8.230.4000 Series 27 electromechanical impulse relay with a 230 V AC operating coil and two normally open contacts for mechanically maintained multi-point lighting control using momentary push buttons.
£11.02
Why Choose the Finder 27.22.8.230.4000 Impulse Relay?
The Finder 27.22.8.230.4000 is a modular electromechanical impulse relay designed for convenient lighting control and electrical switching in residential and commercial installations. Part of the Finder Series 27, it provides a practical solution for controlling lighting circuits from multiple push-button locations without requiring conventional multi-way switching arrangements.
Featuring a 230 V AC operating coil and two normally open (2 NO) contacts, the relay uses an impulse-operated, mechanically maintained switching mechanism. Each suitable control pulse advances the switching mechanism, allowing connected lighting circuits to be switched without requiring the operating coil to remain continuously energised.
The Finder 27.22.8.230.4000 is particularly useful for corridors, staircases, communal areas and other installations where lighting needs to be operated from several positions. Its impulse relay design reduces the need for complex switching wiring while providing a dependable mechanical switching function for compatible electrical loads.
Key Advantages
- Impulse-operated switching enables lighting control using momentary push buttons.
- 230 V AC operating coil suitable for compatible mains-voltage control circuits.
- Two normally open contacts provide switching of two compatible circuits.
- Mechanically maintained contact position eliminates the need for continuous coil energisation.
- Supports lighting control from multiple push-button locations.
- Helps simplify wiring compared with conventional multi-way lighting arrangements.
- Electromechanical construction provides reliable switching operation.
- Suitable for residential and commercial lighting installations.
- Can be integrated into compatible electrical control and distribution assemblies.
- Provides a practical solution for corridors, staircases and communal lighting.
Key Features
- Finder Series 27 electromechanical impulse relay.
- 230 V AC rated coil voltage.
- 50/60 Hz AC control supply.
- Two normally open switching contacts.
- Impulse-operated, mechanically maintained switching mechanism.
- Momentary push-button control.
- Designed for lighting circuits with multiple control points.
- Coil energisation required only during switching pulses.
- Electromechanical operation without continuous holding power.
- Suitable for installation in compatible electrical enclosures.
- Designed for residential and commercial lighting control applications.
Reliable Impulse Switching for Multi-Point Lighting Control
The Finder 27.22.8.230.4000 operates using short electrical impulses applied to its 230 V AC coil. Rather than maintaining the coil energised throughout the operating period, the relay uses a mechanical mechanism to retain its selected contact position after the control pulse ends.
This operating principle makes impulse relays particularly suitable for lighting installations with multiple push-button control points. Push buttons can be positioned at entrances, exits, stair landings and other convenient locations, allowing the same lighting circuit to be controlled from several positions.
The relay's two normally open contacts provide switching capability for compatible electrical circuits. The switching sequence and circuit arrangement should be implemented according to the applicable Finder wiring diagram, with the connected loads selected within the manufacturer's specified ratings.
Finder Series 27 impulse relays offer a practical alternative to traditional multi-way lighting switching arrangements, combining mechanical contact retention with straightforward momentary control for building electrical installations.
Typical Applications
- Residential lighting controlled from multiple locations.
- Staircase and landing lighting.
- Corridor and hallway lighting.
- Communal lighting in apartment buildings.
- Commercial premises and office lighting.
- Lighting systems operated by momentary push buttons.
- Multi-point electrical switching installations.
- Building services lighting control.
- Electrical refurbishment projects replacing complex multi-way switching.
- Compatible lighting circuits requiring mechanically maintained switching.
Technical Specifications
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| Device Type | Latching / Impulse Relay | |
|---|---|---|
| Timing Function | Pulse | |
| Manufacturer | Finder | |
| Series | Series 27 | |
| Model | 27.22.8.230.4000 | |
| Product type | Electromechanical impulse relay | |
| Operating principle | Impulse-operated, mechanically maintained | |
| Rated coil voltage | 230 V AC | |
| Coil supply | Alternating current | |
| AC supply frequency | 50/60 Hz | |
| Contact configuration | 2 NO | |
| Number of switching contacts | 2 | |
| Control method | Momentary electrical impulse | |
| Contact retention | Mechanical | |
| Typical application | Multi-point lighting control | |
| Installation environment | Suitable electrical enclosure |
Frequently Asked Questions
What is the Finder 27.22.8.230.4000 used for?
The Finder 27.22.8.230.4000 is an electromechanical impulse relay designed primarily for lighting control. It allows compatible lighting circuits to be operated using momentary push buttons installed at multiple locations.
What operating voltage does the Finder 27.22.8.230.4000 require?
The relay uses a 230 V AC operating coil for impulse control. The control circuit must be designed for the specified coil voltage and installed in accordance with applicable electrical regulations.
What is an impulse relay?
An impulse relay is a switching device that changes its mechanically maintained contact state in response to a short electrical control pulse. Unlike a conventional monostable relay, it does not require continuous coil energisation to maintain its selected switching position.
How many contacts does this relay have?
The Finder 27.22.8.230.4000 features two normally open contacts, providing switching capability for compatible electrical circuits.
Can this relay control lighting from several push buttons?
Yes. Multi-point lighting control is a principal application of Finder Series 27 impulse relays. Compatible momentary push buttons can be connected according to the manufacturer's wiring diagram to operate the relay from different locations.
Does the relay coil need to remain energised?
No. The relay uses a mechanically maintained switching mechanism, so the coil is energised only during the appropriate control pulse rather than continuously throughout the lighting operating period.
Is this the same as a conventional installation relay?
No. A conventional monostable installation relay normally returns to its original contact position when coil power is removed. The Finder 27.22.8.230.4000 is an impulse relay that mechanically retains its switching state after a control pulse.
Can the Finder 27.22.8.230.4000 be used in commercial buildings?
Yes. It is suitable for compatible commercial lighting control applications, including corridors, staircases and communal areas, provided the electrical installation and connected loads comply with the manufacturer's ratings.
What type of switch should be used to control this relay?
The relay is intended for operation using momentary push-button controls that provide an appropriate electrical impulse to its operating coil.
Trusted by Electrical Installers and Lighting Control Professionals
Finder Series 27 impulse relays provide practical, mechanically maintained switching for multi-point lighting control, helping electrical installers simplify push-button wiring arrangements in residential and commercial buildings.
