Finder 22.23.8.024.4000 – 22 Series Modular monostable relays

Why Choose the Finder 22.23.8.024.4000 Modular Relay?

The Finder 22.23.8.024.4000 is a robust 20 A modular monostable relay with a 24 V AC coil, designed for reliable switching in electrical distribution boards, lighting control systems and industrial automation installations. Part of the Finder 22 Series, this DIN rail-mounted relay provides a practical interface between a low-voltage AC control circuit and compatible electrical loads.

Featuring one normally open (NO) contact and one normally closed (NC) contact, the Finder 22.23 allows two switching functions to operate simultaneously from a single control signal. When the coil is energised, the normally open contact closes while the normally closed contact opens. This arrangement is particularly useful for change-of-state control, electrical interlocking arrangements and automation applications requiring complementary switching outputs.

The relay offers a 20 A rated switching current, a 250 V AC rated contact voltage and a 5,000 VA AC switching capacity under the specified load conditions. Its silver tin oxide (AgSnO2) contacts are well suited to appropriately rated lighting and electrical loads where switching performance and inrush current must be considered. Compact DIN rail construction and screw terminal connections make it suitable for professional electrical installations.

Key Advantages

• 20 A modular relay for professional electrical switching applications.
• 24 V AC operating coil for integration with compatible AC control circuits.
• One normally open and one normally closed contact for complementary switching functions.
• 250 V AC rated contact voltage for compatible mains-powered equipment.
• 5,000 VA switching capacity for suitable AC loads.
• Silver tin oxide contacts designed for reliable electrical switching.
• Monostable operation automatically returns contacts to their normal positions when the coil is de-energised.
• DIN rail mounting simplifies integration into electrical distribution boards.
• Screw terminal connections support secure installation.
• Compact modular housing helps conserve panel space.
• IP20 protection rating for installation inside suitable electrical enclosures.
• −40 to +40 °C operating temperature range.
• Suitable for compatible lighting circuits, electrical control systems and automation equipment.
• Manufactured by Finder, a specialist in relays and electrical control components.

Key Features

• Finder 22 Series modular installation relay.
• Monostable, non-latching operation.
• Two-pole contact arrangement.
• 1 normally open (NO) + 1 normally closed (NC) contact.
• 20 A rated switching current.
• 24 V AC nominal coil voltage.
• 250 V AC rated contact voltage.
• 400 V AC maximum contact switching voltage.
• 5 kVA maximum rated AC switching power.
• Silver tin oxide (AgSnO2) contact material.
• 41 Ω nominal coil resistance.
• Approximately 3 VA AC coil consumption.
• 35 mm DIN rail mounting.
• Screw terminal electrical connections.
• Approximately 84 mm overall height.
• Approximately 58.4 mm overall depth.
• IP20 protection rating.
• −40 to +40 °C ambient operating temperature.
• Suitable for suitably rated resistive and lighting loads.
• RoHS-compliant construction.

Reliable Complementary Switching with a 24 V AC Control Coil

The Finder 22.23.8.024.4000 operates using an electromagnetic coil supplied with 24 V AC. When the coil receives its rated supply, the relay changes the state of both contacts: the normally open contact closes and the normally closed contact opens. When the coil supply is removed, both contacts return to their original positions.

This 1NO + 1NC configuration offers greater control flexibility than a relay containing only normally open contacts. For example, one contact can enable a compatible electrical load while the other provides an alternative switching function. The arrangement can be used in appropriately engineered control and indication circuits, subject to the relevant electrical ratings and safety requirements.

The relay's 20 A contact rating and 5,000 VA AC switching capacity make it suitable for a range of electrical control applications. However, actual load compatibility depends on the connected equipment's operating current, power factor and inrush characteristics. LED drivers, fluorescent ballasts and motor loads may require additional consideration beyond the general-purpose switching rating.

The use of AgSnO2 contact material helps support reliable operation in compatible lighting and electrical switching applications. Silver tin oxide contacts are commonly selected where resistance to contact wear and switching performance are important, particularly for loads that can generate relatively high current during energisation.

Because the Finder 22.23 is a monostable relay, its coil must remain energised to maintain the operated contact state. This provides predictable behaviour in conventional control circuits and makes the relay suitable for applications using appropriately rated timers, controllers, switches and automation interfaces.

The device is designed for DIN rail installation in electrical distribution boards and control cabinets. Its modular format allows it to be installed alongside other compatible control equipment, while screw terminals provide practical connections for the coil and switched circuits. Installation should be completed by a competent electrician using the manufacturer's terminal identification and wiring instructions.

Typical Applications

• Commercial and residential lighting control.
• Electrical distribution board switching.
• 24 V AC control circuits.
• Building automation systems.
• Industrial electrical control panels.
• Complementary normally open and normally closed switching.
• Compatible LED and conventional lighting installations.
• Electrical load control and automation.
• Timed switching through compatible external controllers.
• Heating, ventilation and building services control circuits.
• Control and status indication systems.
• Commercial offices and retail premises.
• Electrical refurbishment and system upgrades.
• Panel building and electrical engineering projects.