Why Choose the Finder 39.11.0.024.0073 MasterBASIC Interface Relay?
The Finder 39.11.0.024.0073 is a compact 6 A, 24 V AC/DC DIN rail interface relay module designed for reliable signal interfacing and electrical load switching in industrial automation and control systems. Part of the Finder Series 39 MasterINTERFACE range, this specialist MasterBASIC ATEX version combines a single changeover contact, integrated coil indication and protection, and screw terminal connections within an exceptionally slim 6.2 mm-wide housing.
Designed for applications where control panel space is limited, the Finder 39.11.0.024.0073 provides an effective interface between programmable logic controllers (PLCs), electronic control equipment and compatible electrical loads. Its 24 V AC/DC operating supply supports common industrial control voltages, while the 6 A silver nickel (AgNi) changeover contact provides flexible switching for control circuits, signalling devices and suitable actuators.
A distinguishing feature of this model is its ATEX-specific .0073 configuration, intended for installations requiring the relevant hazardous-area equipment approvals. The module incorporates an electromechanical relay, a protective interface circuit and an LED operating indicator, helping simplify installation, commissioning and troubleshooting.
With 35 mm DIN rail mounting, screw terminals and a compact modular design, the Finder 39.11.0.024.0073 is particularly suitable for industrial control cabinets, machine automation, packaging equipment and process-control applications where dependable electrical isolation and space-efficient relay interfacing are required.
Key Advantages
- 6 A interface relay for dependable industrial control and signal switching.
- 24 V AC/DC operating supply supports compatible AC and DC control circuits.
- ATEX-specific .0073 version for appropriately certified hazardous-area applications.
- Single changeover contact (1 CO / SPDT) provides normally open and normally closed switching functions.
- Ultra-slim 6.2 mm housing maximises available space inside electrical control panels.
- Integrated LED indicator assists with visual identification of relay operation.
- Integrated coil protection circuit helps protect associated control electronics against switching transients.
- Silver nickel (AgNi) contacts provide reliable electromechanical switching.
- Removable relay construction supports convenient maintenance and replacement.
- Secure retaining and ejector clip assists with relay handling.
- Screw terminal connections provide practical wiring for industrial installations.
- 35 mm DIN rail mounting enables straightforward integration into control cabinets.
- Optional jumper-link compatibility supports efficient distribution of common electrical connections.
Key Features
- Finder Series 39 MasterINTERFACE relay module.
- MasterBASIC electromechanical relay configuration.
- ATEX-specific version identified by option code 0073.
- 24 V AC/DC nominal operating voltage.
- 6 A rated contact current.
- 10 A maximum peak contact current.
- 1 CO / SPDT contact arrangement.
- 250 V AC rated contact voltage.
- 400 V AC maximum switching voltage.
- 1500 VA rated AC-1 switching capacity.
- 300 VA rated AC-15 switching capacity at 230 V AC.
- Silver nickel (AgNi) contact material.
- Integrated LED coil indication.
- Integrated coil protection circuit.
- 6.2 mm modular width.
- 5 ms operate time and 6 ms release time.
- 10,000,000-operation mechanical life under specified conditions.
- IP20 protection rating.
- −40 to +70 °C ambient operating temperature range.
- 35 mm DIN rail mounting in accordance with EN 60715.
- Screw terminals with dual-head screw design.
Important: The .0073 suffix identifies an ATEX-specific version. Suitability for hazardous-area installations must be confirmed against the current Finder certificate, equipment marking, permitted zone, gas group, temperature class and installation requirements. ATEX-related approval must not be assumed to cover every hazardous environment.
ATEX-Specific Interface Relay for Industrial Control Systems
The Finder 39.11.0.024.0073 belongs to the ATEX-specific range of Series 39 MasterBASIC interface modules. It is designed for applications requiring an appropriately certified relay interface in installations where potentially explosive atmospheres may be present.
Its 24 V AC/DC coil allows connection to compatible industrial control circuits, while the 6 A changeover contact provides electromechanical switching of a separate electrical load.
The relay incorporates a removable electromechanical switching element and a compact DIN rail interface socket, allowing straightforward integration into suitable industrial electrical enclosures.
For hazardous-area applications, the complete installation must be assessed against the applicable equipment certification and installation standards. This includes the enclosure, wiring methods, operating temperature, permitted electrical loads and any required protective measures.
Reliable PLC and Electronic Control Interface
The Finder 39.11.0.024.0073 is particularly useful as an interface between a PLC output and an external electrical circuit. The relay allows a compatible low-voltage control signal to operate a separate electromechanical contact, providing flexibility when connecting automation controllers to field devices.
The single changeover contact provides both normally open and normally closed switching paths. This enables the relay to be used for control signalling, equipment interlocking, status indication and compatible actuator control.
The module's integrated LED indicator makes it easier to identify when the control supply is present, while its built-in coil protection circuit helps reduce electrical disturbances associated with relay switching.
Its 5 ms operate time and 6 ms release time provide responsive electromechanical switching for suitable industrial control applications.
Space-Saving 6.2 mm DIN Rail Construction
Control panel space is often limited, particularly in industrial automation systems containing large numbers of PLC inputs, outputs and relay interfaces. The Finder 39.11.0.024.0073 addresses this challenge with its 6.2 mm-wide modular housing.
The narrow design allows multiple interface modules to be installed side by side on a standard 35 mm DIN rail, helping maximise the number of control channels available within an electrical cabinet.
The module features screw terminal connections with dual-head screws suitable for common installation tools. A retaining and ejector clip secures the removable relay and assists with replacement during maintenance.
Compatible jumper-link accessories can also simplify the distribution of common electrical connections across multiple modules, provided the selected accessories are approved for the intended installation.
Typical Applications
- Industrial PLC output interface circuits.
- ATEX-specific industrial control installations.
- Process automation and monitoring systems.
- Packaging machinery and production lines.
- Bottling and filling equipment.
- Industrial machine control panels.
- Electrical distribution and control cabinets.
- Conveyor and materials handling equipment.
- Industrial signalling and status indication.
- Traffic signal control equipment.
- Warehouse automation systems.
- Hoists, cranes and lifting equipment control circuits.
- Solenoid and actuator interfacing within specified load ratings.
- Low-voltage automation control systems.
- Space-constrained DIN rail installations.
