Finder 94.64SMA – 94 Series Sockets for 55 Series relays

Finder 94.64SMA Relay Socket – Screw Terminals, Metal Retaining Clip, 35 mm DIN Rail Mounting for 55 Series Relays and 85 Series Timers

The Finder 94.64SMA is a professional DIN rail relay and timer socket designed for use with compatible Finder 55 Series industrial relays and Finder 85 Series timer relays. Part of the Finder 94 Series socket and accessory range, it provides a practical connection and mounting solution for industrial automation, machinery control and electrical distribution applications.

Featuring screw terminals with cage-clamp connections, a blue insulating housing and a supplied metal retaining clip, the Finder 94.64SMA is designed to support secure installation and straightforward replacement of compatible plug-in relays and timers. It mounts onto a standard 35 mm DIN rail, making it suitable for integration into industrial control cabinets and electrical panels.

The socket is specifically listed for use with Finder 55.32 and 55.34 relays, alongside Finder 85.02 and 85.04 timers. Its removable plug-in component arrangement allows maintenance personnel to replace a compatible relay or timer without rewiring the socket, provided the electrical installation has first been safely isolated.

Important: The Finder 94.64SMA is a socket, not a complete relay or timer. It does not contain its own switching contacts, timing electronics or operating coil. These functions are supplied by the compatible component installed in the socket.

Key Advantages

• Compatible with Finder 55.32 and 55.34 relays for industrial switching applications.
• Compatible with Finder 85.02 and 85.04 timers for suitable timed control circuits.
• Screw terminals with cage-clamp connections provide secure electrical wiring.
• 35 mm DIN rail mounting supports convenient installation inside control panels.
• Metal retaining clip included to help secure the installed relay or timer.
• Blue insulating housing provides a distinctive appearance in electrical assemblies.
• Plug-in relay and timer arrangement simplifies component replacement.
• Modular construction separates permanent panel wiring from the replaceable control component.
• Industrial control panel compatibility supports a broad range of automation applications.
• Suitable for relay switching and timer installations using the specified Finder families.
• Maintenance-friendly design reduces the need to disconnect external conductors when replacing a plug-in device.
• Finder 94 Series construction provides a purpose-designed accessory for compatible industrial relays.
• Suitable for machinery control, electrical distribution and automation systems.

Key Features

• Finder 94 Series relay socket.
• Manufacturer part number: 94.64SMA.
• Screw terminal connections.
• Cage-clamp terminal construction.
• Blue socket housing.
• Metal retaining clip supplied.
• Included retaining clip: Finder 094.51.
• 35 mm DIN rail installation.
• Compatible relay: Finder 55.32.
• Compatible relay: Finder 55.34.
• Compatible timer: Finder 85.02.
• Compatible timer: Finder 85.04.
• Plug-in component mounting.
• Removable relay and timer arrangement.
• Industrial electrical control applications.
• Designed for installation inside suitable electrical enclosures.
• Separate socket and relay/timer selection allows application-specific configuration.

How the Finder 94.64SMA Relay Socket Works

The Finder 94.64SMA provides a fixed electrical connection point for compatible plug-in relays and timer relays. Instead of connecting the external wiring directly to the removable relay or timer, the installer connects the conductors to the socket's screw terminals.

The compatible relay or timer is then inserted into the socket, creating the electrical connections required for its operation.

When a suitable Finder 55 Series relay is fitted, the relay provides the coil and switching contacts. Applying the correct control voltage to the relay coil causes the contacts to change state according to the relay's contact arrangement.

When a compatible Finder 85 Series timer is installed, the timer provides the electronic timing functions and associated switching outputs. The socket acts as the connection and mounting interface for the timer assembly.

This modular construction is useful in industrial control systems because the permanent wiring remains connected to the socket while the plug-in component can be removed for inspection or replacement.

The socket itself does not determine the relay coil voltage, timing range or switching contact configuration. These characteristics depend on the exact compatible relay or timer selected.

Compatible Finder Relays and Timer Relays

The Finder 94.64SMA is listed for use with selected Finder 55 Series relays and Finder 85 Series timers.

Finder 55 Series Relay Compatibility

The socket supports the following relay families:

• Finder 55.32: General-purpose plug-in electromechanical relay with two changeover contacts.
• Finder 55.34: General-purpose plug-in electromechanical relay with four changeover contacts.

These relays are used in industrial automation, electrical switching and control applications. The exact coil voltage, contact rating and contact material depend on the full relay part number.

Finder 85 Series Timer Compatibility

The socket is also listed for the following timer types:

• Finder 85.02: Plug-in electronic timer relay for compatible timed switching applications.
• Finder 85.04: Plug-in electronic timer relay for suitable control and automation applications.

When selecting a timer, engineers should verify the supply voltage, timing functions, output arrangement and installation requirements against the timer's individual datasheet.

Compatibility note: Although the socket is listed for these relay and timer families, the exact device variant and pin arrangement must always be checked before installation.

Screw Terminals with Cage-Clamp Connections

The Finder 94.64SMA features screw terminals with cage-clamp connections, providing a conventional and secure wiring method for industrial electrical installations.

The cage-clamp arrangement is designed to hold a correctly prepared conductor when the terminal screw is tightened to the manufacturer's specified torque.

This connection method is widely used in industrial control panels because it allows electricians to make permanent wiring connections while retaining the convenience of a removable relay or timer.

The terminal connections should be made using conductors of the appropriate cross-section and type. The correct stripping length, tightening torque and conductor preparation should be taken from Finder's current technical documentation for this specific socket.

Connections must be inspected during installation to ensure that conductors are correctly positioned and securely terminated.

Supplied Metal Retaining Clip – Finder 094.51

The SMA suffix identifies the version supplied with a metal retaining clip. For the Finder 94.64SMA, the supplied clip is identified as Finder 094.51.

The clip helps hold the compatible plug-in relay or timer securely in position after it has been inserted into the socket.

This is particularly useful in industrial control cabinets where equipment may be exposed to normal machinery vibration or routine maintenance activity.

The retaining clip also helps reduce the risk of accidental displacement of the fitted relay or timer.

When a relay or timer needs to be replaced, the retaining clip can be released according to the manufacturer's instructions, allowing the component to be removed from the socket.

Important: The metal retaining clip is a mechanical retention accessory. It does not establish a particular vibration approval or make the completed assembly suitable for safety-critical applications without further assessment.

35 mm DIN Rail Mounting

The Finder 94.64SMA is designed for mounting on a standard 35 mm DIN rail, allowing installation alongside other modular electrical control components.

DIN rail mounting provides a practical way to organise multiple relay and timer assemblies inside industrial control cabinets.

The socket can be positioned with other suitable control devices to create a clearly arranged electrical panel, supporting easier wiring, inspection and maintenance.

Because the relay or timer is removable, replacement work can generally be carried out without disturbing the permanent external wiring, once the installation has been safely isolated.

Appropriate spacing, ventilation, enclosure protection and circuit segregation must be considered according to the fitted device and the wider electrical installation.

Modular Maintenance and Component Replacement

One of the principal advantages of a plug-in relay socket is its maintenance-friendly construction.

In a permanently wired relay assembly, replacing the switching device may require disconnecting and reconnecting individual conductors. With the Finder 94.64SMA, the external wiring remains connected to the socket while the compatible relay or timer can be removed separately.

This can reduce maintenance time and simplify fault diagnosis in suitable industrial applications.

When replacing a relay or timer, the replacement device must have the correct pin configuration, control voltage, contact arrangement and electrical ratings.

All replacement work must be undertaken with the circuit safely isolated and in accordance with the relevant electrical safety procedures.

Typical Applications

• Industrial automation control panels.
• Machinery electrical control systems.
• Finder 55 Series relay installations.
• Finder 85 Series timer installations.
• Electrical distribution and auxiliary switching circuits.
• Manufacturing and production line equipment.
• Packaging and processing machinery.
• Conveyor and material-handling systems.
• Building automation control cabinets.
• Industrial motor control circuits using appropriately rated relays.
• Timed equipment start-up and shutdown circuits.
• Electrical signalling and control applications.
• Modular DIN rail relay assemblies.
• Maintenance-friendly plug-in relay installations.
• Industrial control systems requiring secure screw terminal connections.

Choosing the Correct Finder 94 Series Socket

The Finder 94 Series includes different socket configurations for specific relay families, mounting arrangements and terminal styles.

The Finder 94.64SMA is distinguished by its screw terminal cage-clamp construction, blue housing, 35 mm DIN rail mounting and included metal retaining clip.

When selecting a socket, consider the following:

• Relay or timer compatibility: Confirm the exact device is listed for use with the socket.
• Terminal arrangement: Check the socket wiring diagram and pin configuration.
• Electrical ratings: Confirm that the socket and fitted device are suitable for the control supply and connected load.
• Mounting method: Ensure the socket is appropriate for the intended DIN rail installation.
• Retention: Confirm the correct retaining clip is supplied or specified.
• Environmental conditions: Check temperature, enclosure protection and any applicable installation requirements.

Similar-looking Finder sockets are not necessarily interchangeable. Always verify the complete manufacturer part number before ordering a replacement.