486170240050SMA Finder 1 CO Contacts 24V DC Modular Interface Relay with Green LED + varistor Indication

Why Choose the Finder 486170240050SMA Interface Relay Module?

The Finder 486170240050SMA, also identified as 48.61.7.024.0050.SMA, is a compact 24 V DC DIN rail interface relay module designed for reliable electrical switching in industrial automation, PLC control systems and electrical control panels. Part of the Finder Series 48 range, this complete relay interface assembly combines a sensitive DC electromagnetic relay with a mounting socket, providing a convenient solution for control circuit interfacing and load switching.

Featuring a single-pole changeover (SPDT / 1 CO) contact arrangement, the Finder 486170240050SMA provides both normally open and normally closed switching functions. Its 16 A contact rating at 250 V AC for resistive loads makes it suitable for a wide range of industrial switching duties, while the 24 V DC sensitive coil is designed for operation from compatible industrial control supplies.

With a slim 15.8 mm module width, screw terminal connections, integrated LED status indication and DC coil suppression, the Finder 486170240050SMA offers a practical interface between electronic controllers and electrical loads. Its plug-in construction allows the relay to be replaced without rewiring the entire socket assembly, helping simplify maintenance and reduce equipment downtime.

Key Advantages

• 24 V DC sensitive coil for industrial automation and PLC control circuits.
• 16 A changeover contact for switching appropriately rated electrical loads.
• SPDT / 1 CO contact configuration provides normally open and normally closed switching options.
• 15.8 mm slimline design helps maximise available space in electrical control cabinets.
• Complete relay interface assembly with removable plug-in relay and socket.
• 35 mm DIN rail mounting for convenient installation in standard control panels.
• Screw terminal connections provide secure and accessible field wiring.
• Integrated LED indication enables quick visual checking of the control supply.
• Integrated diode suppression helps reduce switching transients from the DC coil.
• Replaceable relay construction supports straightforward servicing and maintenance.
• IP20 protection rating for installation within suitable electrical enclosures.
• -40 to +70 °C operating temperature range for industrial applications.
• Suitable for PLC interfacing, automation equipment and industrial machinery control systems.

Key Features

• Finder Series 48.61 modular relay interface.
• 24 V DC nominal control voltage.
• Single changeover contact (SPDT / 1 Form C).
• 16 A rated contact current.
• 250 V AC rated switching voltage.
• 0.5 W sensitive DC coil.
• Approximately 22.2 mA nominal coil current.
• Silver cadmium oxide (AgCdO) contact material.
• Plug-in electromagnetic relay with interface socket.
• 35 mm DIN rail installation for industrial control panels.
• Screw terminals for secure electrical connections.
• LED supply status indication.
• Integrated DC coil suppression diode.
• Polarity-sensitive DC input with positive connection to terminal A1.
• Monostable, non-latching operation.
• IP20 protection rating.

Reliable 24 V DC PLC Interfacing and Industrial Load Switching

The Finder 486170240050SMA provides a practical interface between a 24 V DC control circuit and an electrically separate load circuit. When the relay coil is energised, its changeover contact transfers from the normally closed position to the normally open position. When the control voltage is removed, the relay returns to its original state, enabling straightforward switching and interlocking functions.

The 16 A SPDT contact offers flexibility for switching resistive electrical loads, controlling auxiliary equipment and providing status or interlocking signals. Its 24 V DC sensitive coil is particularly suitable for industrial control systems using standard DC supplies. The relay's load ratings must be assessed against the actual switching duty, especially where motors, solenoids, capacitive loads or high inrush currents are involved.

The complete Finder Series 48.61 interface assembly combines the relay, socket, status indication and suppression components in a compact DIN rail format. Its 15.8 mm width supports efficient control panel layouts, while the screw terminals simplify installation. The integrated LED provides convenient visual indication of the control supply, and the diode suppresses voltage transients generated when the relay coil is de-energised. Because of the suppression diode, correct DC polarity is essential.

Typical Applications

• PLC output interfacing and electrical isolation.
• Industrial automation and machine control systems.
• Electrical control panels and distribution cabinets.
• Motor control and auxiliary switching circuits.
• Building automation and HVAC control equipment.
• Industrial pumps, fans and ventilation systems.
• Conveyor and packaging machinery controls.
• Equipment status signalling and electrical interlocking.
• Industrial process control and monitoring systems.
• OEM machinery and electrical equipment assemblies.
• 24 V DC control circuits requiring relay-based load switching.
• Maintenance and replacement of compatible relay interface modules.