Finder 93.66.0.125 MasterPLUS Relay Socket – 110–125 V AC/DC, 6 A, Push-In Terminals, 6.2 mm DIN Rail Mounting
The Finder 93.66.0.125 is a professional MasterPLUS relay interface socket designed for industrial automation, PLC interface circuits and electrical control panels operating with a 110–125 V AC/DC control supply. Part of the Finder 93 Series and associated with the Finder 39 Series MasterINTERFACE system, this compact socket provides a versatile mounting and wiring solution for compatible Finder 34 Series relays.
Featuring push-in terminals, a slim 6.2 mm housing, integrated coil indication and protection circuitry, and compatibility with standard 35 mm DIN rails, the Finder 93.66.0.125 is ideal for space-efficient industrial relay installations. Its MasterPLUS configuration offers a flexible interface arrangement suitable for compatible electromechanical and solid-state relay assemblies.
The socket incorporates a plastic relay retaining and extraction clip for convenient maintenance, alongside connections for optional 16-way jumper links and terminal accessories. These features make it particularly suitable for control panels containing multiple relay interface channels.
Important: The Finder 93.66.0.125 is supplied as a relay socket, not a complete switching relay. A compatible Finder 34 Series relay must be installed separately. The finished assembly's output characteristics depend on the selected relay.
Key Advantages
- 110–125 V AC/DC operating range supports compatible AC and DC industrial control circuits.
- MasterPLUS interface configuration provides a versatile relay interface solution.
- Push-in terminal technology enables fast, convenient electrical wiring.
- Ultra-slim 6.2 mm housing saves space in high-density control cabinets.
- 6 A rated socket current for compatible relay interface assemblies.
- 250 V rated contact circuit for suitable electrical applications.
- Integrated coil indication provides useful visual status information.
- Integrated protection circuitry helps manage electrical disturbances associated with relay operation.
- Compatible with selected Finder 34.51 and 34.81 relays.
- 35 mm DIN rail mounting simplifies installation.
- Plastic retaining and extraction clip supports secure relay installation and straightforward replacement.
- 16-way jumper link compatibility simplifies common wiring across multiple sockets.
- Optional terminal doubler provides additional connection flexibility.
- IP20 protection rating for installation inside suitable electrical enclosures.
- Wide operating temperature range supports demanding industrial environments.
Key Features
- Finder 93 Series relay socket.
- 93.66 MasterPLUS interface configuration.
- Associated with the Finder 39 Series MasterINTERFACE range.
- 110–125 V AC/DC control supply compatibility.
- Push-in electrical terminals.
- 6.2 mm-wide slimline construction.
- 35 mm DIN rail mounting to EN 60715.
- 6 A rated current.
- 250 V rated contact circuit voltage.
- Integrated coil indication and protection circuit.
- Plastic relay retaining and extraction clip.
- Compatible with selected Finder 34.51 electromechanical relays.
- Compatible with selected Finder 34.81 solid-state relays.
- 16-way jumper link connection points.
- Terminal doubler accessory compatibility.
- Blue housing.
- IP20 protection category.
- −40 to +70 °C ambient temperature range.
- Suitable for modular PLC interface and industrial automation systems.
Technical Specifications
- Manufacturer: Finder
- Product series: 93
- Interface family: Finder 39 Series MasterINTERFACE
- Manufacturer part number: 93.66.0.125
- Alternative part number: 93660125
- Product type: Relay interface socket
- Interface configuration: MasterPLUS
- Terminal technology: Push-in
- Nominal control supply: 125 V AC/DC
- Specified supply range: 110–125 V AC/DC
- Control supply type: AC or DC
- Associated relay family: Finder 34 Series
- Compatible electromechanical relay: Finder 34.51.7.060.xx10
- Compatible solid-state relay: Selected Finder 34.81.7.060 variants
- Example electromechanical relay: Finder 34.51.7.060.0010
- Rated socket current: 6 A
- Rated contact circuit voltage: 250 V
- Output configuration: Determined by the fitted relay
- Integrated indication: Coil status indication circuit
- Integrated protection: Coil protection circuit
- Electrical terminal type: Push-in spring-clamp terminals
- Mounting method: DIN rail
- DIN rail size: 35 mm
- DIN rail reference: EN 60715
- Housing colour: Blue
- Housing width: 6.2 mm
- Overall dimensions: Approximately 6.2 × 90.7 × 94.3 mm
- Relay retention: Plastic retaining and extraction clip
- Jumper link compatibility: 16-way jumper link
- Compatible jumper link family: Finder 093.16
- Compatible terminal doubler: Finder 093.62
- Compatible marker accessories: Finder 060.48 and 093.48
- Wire stripping length: 8 mm
- Conductor cross-section: 0.5–2.5 mm², subject to conductor type
- Protection category: IP20
- Ambient temperature range: −40 to +70 °C
- EAN / GTIN-13: 8012823389868
- Country of origin: Italy
- Typical applications: PLC interfaces, industrial automation and modular relay switching systems
What Is the Finder MasterPLUS Interface?
The MasterPLUS configuration belongs to Finder's modular MasterINTERFACE system, which provides compact relay interface solutions for industrial control applications.
MasterPLUS sockets are designed to accommodate compatible relay arrangements while incorporating additional connection and protection features that support flexible control panel construction.
The Finder 93.66.0.125 provides the electrical interface between a suitable control supply and the associated Finder relay. Depending on the relay selected, the completed assembly can provide an electromechanical changeover contact or an appropriate solid-state switching output.
This modular approach allows control panel builders to select the relay technology best suited to the application while retaining a compact socket arrangement.
The MasterPLUS design is especially useful where numerous relay channels must be installed in a limited cabinet space and where maintenance access is important.
110–125 V AC/DC Control Supply
The Finder 93.66.0.125 is designed for 110–125 V AC/DC control circuits, making it suitable for compatible industrial installations using either alternating or direct current supplies.
This dual-supply capability distinguishes it from variants intended exclusively for AC or DC operation.
Finder's socket selection documentation identifies the 93.66.0.125 for 110–125 V AC/DC applications and associates it with suitable 34.51.7.060 and 34.81.7.060 relay variants.
The complete relay and socket combination must be selected according to the manufacturer's compatibility tables. The nominal input voltage of the finished interface assembly must not be inferred solely from the coil designation printed on the individual relay.
Important: The Finder 93.66.0.125 is not a universal 24–240 V AC/DC socket. For applications requiring that wider range, Finder provides a separate 93.66.0.240 variant.
Push-In Terminals for Efficient Panel Wiring
The Finder 93.66.0.125 uses push-in spring-clamp terminals, providing a convenient alternative to conventional screw terminal wiring.
Suitable prepared conductors can be inserted directly into the terminal connection, reducing the number of installation steps required when wiring large control panels.
This is particularly beneficial in applications containing multiple relay interface channels, where consistent and repeatable wiring methods can help improve installation efficiency.
Finder's technical data specifies an 8 mm conductor stripping length and a conductor cross-section range of 0.5–2.5 mm² for the relevant socket system, subject to conductor type and preparation.
Installers should follow the manufacturer's terminal instructions, including any ferrule requirements and the correct conductor release procedure.
Integrated Coil Indication and Protection
The Finder 93.66.0.125 includes an integrated coil indication and protection circuit, helping simplify relay interface wiring.
The indication function provides useful visual feedback associated with the control supply, allowing engineers to identify an energised interface during commissioning and troubleshooting.
The protection circuit is designed to manage electrical effects associated with relay operation, helping reduce the need for separate external protection components in suitable applications.
This combination is especially useful in control cabinets containing PLCs, electronic controllers and other automation equipment.
Note: Coil indication does not independently verify the actual state of the relay contacts or the connected load. Where confirmed switching feedback is required, appropriate monitoring should be provided.
Electromechanical and Solid-State Relay Compatibility
A key advantage of the Finder 93.66.0.125 is its compatibility with selected Finder 34 Series electromechanical and solid-state relays.
Electromechanical Relay Assemblies
When combined with a compatible Finder 34.51 electromechanical relay, the socket can form a compact relay interface with a mechanical switching contact.
For example, Finder identifies the 34.51.7.060.0010 relay as part of the corresponding MasterPLUS electromechanical interface assembly.
This arrangement is suitable for applications requiring the switching characteristics of an electromechanical relay, subject to the relay's electrical ratings.
Solid-State Relay Assemblies
The socket is also associated with selected Finder 34.81 solid-state relay variants.
Solid-state relay assemblies can provide electronic switching without the moving contacts found in conventional electromechanical relays.
However, solid-state outputs have different load characteristics, leakage currents and switching limitations. The correct relay must be selected according to the connected load and the manufacturer's specifications.
Compatibility note: The Finder 93.66.0.125 does not itself determine the output type. The installed relay establishes whether the completed assembly uses electromechanical or solid-state switching.
16-Way Jumper Links and Optional Accessories
The Finder 93.66.0.125 includes connection points for a compatible 16-way jumper link, allowing suitable common electrical connections to be distributed between adjacent interface sockets.
This can simplify wiring in control cabinets containing multiple relay channels, reducing the need for individual conductors between terminals that share the same electrical potential.
Compatible accessory families include:
- Finder 093.16: Blue 16-way jumper link.
- Finder 093.16.0: Black 16-way jumper link.
- Finder 093.16.1: Red 16-way jumper link.
- Finder 093.62: Terminal doubler accessory.
- Finder 060.48: Marker tag accessory.
- Finder 093.48: Marker tag accessory.
These accessories support organised wiring, circuit identification and efficient panel assembly.
Jumper links must only connect terminals intended to share a common potential. The total current carried by the shared connection must remain within the manufacturer's permitted ratings.
DIN Rail Installation and Electrical Integration
The Finder 93.66.0.125 is designed for mounting on a standard 35 mm DIN rail in accordance with EN 60715.
Its 6.2 mm-wide housing allows multiple interface assemblies to be installed side by side, making it well suited to compact electrical cabinets and high-density automation systems.
The push-in terminals provide electrical connections for the control supply and relay output circuits, while the plastic retaining and extraction clip helps secure the compatible relay.
During maintenance, the relay can be removed and replaced without disconnecting the socket's external wiring, provided the installation has first been safely isolated.
The socket has an IP20 protection rating and should be installed inside a suitable electrical enclosure.
Before energising the assembly, engineers should verify the control supply, relay type, wiring configuration, load rating and applicable protection requirements.
Typical Applications
- PLC input and output interface circuits.
- Industrial automation control panels.
- Machinery electrical control systems.
- 110–125 V AC/DC control circuits.
- Manufacturing and production line equipment.
- Packaging and processing machinery.
- Conveyor and material-handling systems.
- Automated warehouse equipment.
- Building management systems.
- Industrial signalling and auxiliary switching.
- High-density DIN rail relay installations.
- Control cabinets requiring push-in terminal wiring.
- Multi-channel relay assemblies using jumper links.
- Electromechanical relay interface applications.
- Compatible solid-state relay interface applications.
Finder 93 Series MasterPLUS Socket Comparison
The Finder 93 Series includes several MasterPLUS socket variants for different supply voltages and interface requirements.
- Finder 93.66.0.125: MasterPLUS push-in socket for 110–125 V AC/DC applications.
- Finder 93.66.0.240: MasterPLUS push-in socket for 24–240 V AC/DC applications.
- Finder 93.66.8.230: MasterPLUS push-in socket for 220–240 V AC applications.
- Finder 93.66.7.125: MasterPLUS push-in socket for 110–125 V DC applications.
- Finder 93.66.3.125: MasterPLUS variant for 110–125 V AC/DC applications incorporating leakage-current suppression characteristics.
- Finder 93.60.0.125: MasterBASIC socket for 110–125 V AC/DC applications.
- Finder 93.65.0.125: MasterOUTPUT socket for 110–125 V AC/DC applications.
Although these variants share a similar modular construction, they are intended for different control functions and supply conditions. Always match the exact socket and relay combination to the intended application.
