Finder 39.11.0.024.0073 39 Series Interface relays and base 1 Pole 6 Amp 24 Volt AC/DC
Finder 39.11.0.024.0073 Series 39 MasterBASIC ATEX-specific interface relay with a 24 V AC/DC operating supply, 6 A SPDT changeover contact, 6.2 mm DIN rail housing, integrated LED indication, coil protection and screw terminal connections for industrial PLC and automation control applications.
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.
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.
Technical Specifications
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Terminal Type
Screw
Load Voltage
400 V AC
Mounting Type
DIN rail
Switching Current (A)
6 A
Manufacturer
Finder
Series
39 Series MasterINTERFACE
Product family
MasterBASIC
Type
39.11
Manufacturer part number
39.11.0.024.0073
Product type
Electromechanical interface relay module
Special version
ATEX-specific configuration
Relay technology
Electromechanical
Operating principle
Monostable / non-latching
Number of poles
1
Contact configuration
1 CO / SPDT (1 Form C)
Normally open contacts
1
Normally closed contacts
1
Rated contact current
6 A
Maximum peak contact current
10 A
Rated contact voltage
250 V AC
Maximum switching voltage
400 V AC
Rated AC-1 switching capacity
1500 VA
Rated AC-15 switching capacity at 230 V AC
300 VA
Single-phase motor rating at 230 V AC
0.185 kW
DC-1 breaking capacity at 30 V DC
6 A
DC-1 breaking capacity at 110 V DC
0.2 A
DC-1 breaking capacity at 220 V DC
0.12 A
Minimum switching load
500 mW
Nominal control voltage
24 V AC/DC
AC supply frequency
50/60 Hz
Coil operating range
80–110% of nominal voltage
Minimum operating voltage
19.2 V AC/DC
Maximum operating voltage
26.4 V AC/DC
Holding voltage
60% of nominal voltage
Drop-out voltage
10% of nominal voltage
Contact material
Silver nickel (AgNi)
Coil indication
Integrated LED
Coil protection
Integrated protection circuit
Operate time
5 ms
Release time
6 ms
Mechanical life
10,000,000 operations
Electrical life at rated AC-1 load
60,000 operations
Impulse withstand voltage between coil and contacts
6 kV
Dielectric strength between open contacts
1000 V AC
Operating temperature
−40 to +70 °C
Protection rating
IP20
Module width
6.2 mm
Approximate module dimensions
94.3 × 6.2 × 90.7 mm
Mounting type
35 mm DIN rail (EN 60715)
Terminal type
Screw terminals
Recommended wire stripping length
8 mm
Terminal tightening torque
0.5 Nm
Jumper-link compatibility
Compatible with specified ATEX interface accessories
Component approvals
CE, CSA, cURus, EAC, RINA and VDE, according to applicable documentation
Environmental compliance
RoHS compliant
Country of origin
Italy
Farnell order code
2930818
Frequently Asked Questions
What is the Finder 39.11.0.024.0073 used for?
The Finder 39.11.0.024.0073 is a slim DIN rail interface relay used to connect PLCs and electronic control equipment to compatible electrical loads. It is an ATEX-specific MasterBASIC version intended for installations requiring the relevant equipment certification.
What control voltage does the Finder 39.11.0.024.0073 require?
The relay operates from a 24 V AC/DC nominal control supply. Its specified operating voltage range is 19.2 to 26.4 V AC/DC, corresponding to 80–110% of the nominal voltage.
What is the current rating of the Finder 39.11.0.024.0073?
The relay has a 6 A rated contact current and a 10 A maximum peak contact current. The rated AC-1 switching capacity is 1500 VA, subject to the manufacturer's specified operating conditions.
What contact configuration does the Finder 39.11.0.024.0073 have?
The module features one changeover contact (1 CO / SPDT). This provides a common contact that switches between normally closed and normally open paths when the relay coil is energised.
What does the ATEX-specific 0073 suffix mean?
The 0073 suffix identifies a Finder Series 39 ATEX-specific interface relay configuration. Its suitability for a hazardous-area installation must be confirmed against the current manufacturer certification, equipment marking and applicable installation requirements.
Can the Finder 39.11.0.024.0073 be used with a PLC?
Yes. The relay is designed for PLC and electronic control interfacing. Its 24 V AC/DC control supply and 6 A changeover contact allow compatible PLC outputs to control separate electrical circuits.
Does the Finder 39.11.0.024.0073 include an LED indicator?
Yes. The module includes an integrated LED indicator that provides a visual indication of the control supply. This is useful during commissioning, inspection and troubleshooting.
How wide is the Finder 39.11.0.024.0073?
The module is just 6.2 mm wide, making it suitable for compact control panels where multiple relay interfaces must be installed side by side.
Can the Finder 39.11.0.024.0073 be mounted on a DIN rail?
Yes. The module is designed for mounting onto a standard 35 mm DIN rail conforming to EN 60715. It uses screw terminals for electrical connections.
What is the difference between the Finder 39.11.0.024.0073 and 39.11.0.024.0060?
Both models are Finder Series 39 MasterBASIC interface relays with a 24 V AC/DC operating supply, 6 A changeover contact and screw terminal connections. The 39.11.0.024.0073 is the ATEX-specific version, while the 39.11.0.024.0060 is a standard configuration. Their certifications and permitted applications should be checked before substitution.
Can the Finder 39.11.0.024.0073 switch 230 V AC loads?
Yes. The relay has a 250 V AC rated contact voltage and can switch compatible 230 V AC loads within its specified current and utilisation ratings. The maximum switching voltage is 400 V AC, but this must not be treated as a continuous load rating.
What is the operating temperature range of the Finder 39.11.0.024.0073?
The relay has a specified ambient operating temperature range of −40 to +70 °C. Additional current derating and installation restrictions may apply, particularly when multiple modules are installed together or the relay is used in an ATEX-specific application.
Designed for Industrial Automation and Electrical Control Professionals
The Finder 39.11.0.024.0073 combines a 24 V AC/DC control supply, 6 A changeover contact, ATEX-specific construction and ultra-slim 6.2 mm DIN rail housing. With integrated LED indication, coil protection and screw terminal connections, it provides a practical relay interface for PLC systems, industrial automation equipment and appropriately certified control installations.
Terminal Type
Screw
Load Voltage
400 V AC
Mounting Type
DIN rail
Switching Current (A)
6 A
Manufacturer
Finder
Series
39 Series MasterINTERFACE
Product family
MasterBASIC
Type
39.11
Manufacturer part number
39.11.0.024.0073
Product type
Electromechanical interface relay module
Special version
ATEX-specific configuration
Relay technology
Electromechanical
Operating principle
Monostable / non-latching
Number of poles
1
Contact configuration
1 CO / SPDT (1 Form C)
Normally open contacts
1
Normally closed contacts
1
Rated contact current
6 A
Maximum peak contact current
10 A
Rated contact voltage
250 V AC
Maximum switching voltage
400 V AC
Rated AC-1 switching capacity
1500 VA
Rated AC-15 switching capacity at 230 V AC
300 VA
Single-phase motor rating at 230 V AC
0.185 kW
DC-1 breaking capacity at 30 V DC
6 A
DC-1 breaking capacity at 110 V DC
0.2 A
DC-1 breaking capacity at 220 V DC
0.12 A
Minimum switching load
500 mW
Nominal control voltage
24 V AC/DC
AC supply frequency
50/60 Hz
Coil operating range
80–110% of nominal voltage
Minimum operating voltage
19.2 V AC/DC
Maximum operating voltage
26.4 V AC/DC
Holding voltage
60% of nominal voltage
Drop-out voltage
10% of nominal voltage
Contact material
Silver nickel (AgNi)
Coil indication
Integrated LED
Coil protection
Integrated protection circuit
Operate time
5 ms
Release time
6 ms
Mechanical life
10,000,000 operations
Electrical life at rated AC-1 load
60,000 operations
Impulse withstand voltage between coil and contacts
6 kV
Dielectric strength between open contacts
1000 V AC
Operating temperature
−40 to +70 °C
Protection rating
IP20
Module width
6.2 mm
Approximate module dimensions
94.3 × 6.2 × 90.7 mm
Mounting type
35 mm DIN rail (EN 60715)
Terminal type
Screw terminals
Recommended wire stripping length
8 mm
Terminal tightening torque
0.5 Nm
Jumper-link compatibility
Compatible with specified ATEX interface accessories
Component approvals
CE, CSA, cURus, EAC, RINA and VDE, according to applicable documentation
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