40.61.9.024.1000 Finder Miniature PCB relay 1pole 16A DC 24V

Why Choose the Finder 40.61.9.024.1000 Miniature Power Relay?

The Finder 40.61.9.024.1000 is a compact 16 A miniature electromechanical power relay from the Finder Series 40 range, designed for industrial automation, electrical control systems and electronic switching applications. Featuring a 24 V DC standard coil, one changeover contact (1 CO / SPDT) and silver nickel (AgNi) contact material, this relay provides a dependable switching interface between low-voltage control circuits and compatible electrical loads.

With a nominal coil consumption of 0.65 W and a coil resistance of 900 Ω, the Finder 40.61.9.024.1000 is suitable for equipment using an appropriately rated 24 V DC control supply. Its changeover contact arrangement provides both normally open and normally closed switching functions, making it useful for auxiliary control, equipment signalling and load switching.

The relay combines a 16 A rated contact current, 250 V AC rated contact voltage and 400 V AC maximum switching voltage in a compact housing. Designed for direct printed circuit board mounting or installation using compatible Finder Series 95 sockets, it offers practical flexibility for equipment manufacturers, control panel builders and maintenance engineers.

The 40.61.9.024.1000 also features RT II flux-proof construction, supporting appropriate electronic assembly and soldering processes. Its cadmium-free AgNi contacts, monostable operation and established Series 40 design make it a practical solution for industrial control applications requiring compact, reliable electromechanical switching.

Key Advantages

• 16 A rated contact current: Provides switching capability for compatible industrial and commercial electrical loads.
• 24 V DC standard coil: Suitable for common industrial automation and control supplies.
• 0.65 W nominal coil consumption: Supports operation from appropriately rated electronic control circuits.
• Single changeover contact: Provides normally open and normally closed switching functions.
• Silver nickel contacts: AgNi contact material offers a cadmium-free solution for suitable general-purpose switching.
• 250 V AC rated contact voltage: Supports compatible mains-voltage switching applications.
• 400 V AC maximum switching voltage: Provides flexibility within the manufacturer's specified operating limits.
• Monostable operation: Returns the contacts to their normal position when the coil is de-energised.
• Compact construction: Helps conserve installation space in electronic equipment and control assemblies.
• PCB and socket mounting: Supports direct circuit board integration and compatible plug-in installations.
• 6 kV impulse insulation: Provides electrical separation between the operating coil and switching contacts.
• RT II flux-proof protection: Supports appropriate PCB soldering processes.
• Established Finder Series 40 platform: Suitable for industrial automation, machinery control and electrical maintenance applications.

Key Features

• Finder Series 40 miniature electromechanical power relay.
• Type 40.61 single-pole relay construction.
• 24 V DC standard operating coil.
• 0.65 W nominal DC coil consumption.
• 900 Ω nominal coil resistance.
• Approximately 27 mA nominal coil current.
• One changeover contact (1 CO / SPDT).
• 16 A rated contact current.
• 250 V AC rated contact voltage.
• 400 V AC maximum switching voltage.
• Silver nickel (AgNi) contact material.
• Cadmium-free contact construction.
• Monostable, non-latching operation.
• Direct PCB or compatible Finder Series 95 socket mounting.
• 5 mm contact pin pitch.
• 6 kV coil-to-contact impulse insulation.
• RT II flux-proof environmental protection.
• Compact housing measuring approximately 29 × 12.4 × 25 mm.

Reliable 24 V DC Switching for Industrial Automation and Electronic Control

The Finder 40.61.9.024.1000 provides an electromechanical switching interface between a 24 V DC control circuit and an electrically isolated contact circuit. When the operating coil is energised, the common contact transfers from the normally closed terminal to the normally open terminal. Removing the coil supply allows the internal spring mechanism to return the contacts to their original position.

This monostable switching arrangement is particularly useful in conventional industrial control systems where the output must follow the energised or de-energised state of the control signal. Typical functions include auxiliary circuit switching, equipment status indication, electrical interlocking and compatible load control.

The relay's standard 24 V DC coil has a nominal resistance of 900 Ω and consumes approximately 0.65 W at its rated supply voltage. Its nominal current is approximately 27 mA, making it suitable for electronic relay drivers, PLC output interfaces and control circuits capable of supplying the required operating current.

Where the coil is controlled by a transistor or another semiconductor output, appropriate suppression should be considered to limit inductive voltage transients when the coil is switched off. The suppression arrangement should account for the required relay release time and the characteristics of the control device.

With a 16 A rated contact current, the Finder 40.61.9.024.1000 can switch compatible electrical loads within the manufacturer's specified limits. The Series 40 contact specification includes a 4,000 VA AC-1 resistive load rating and a 750 VA AC-15 inductive load rating at 230 V AC. These ratings describe different switching conditions and must not be treated as interchangeable.

Loads such as motors, transformers, solenoids, capacitors and LED drivers can generate elevated inrush currents or demanding switching conditions. For these applications, relay selection should account for the actual load characteristics, switching frequency and electrical endurance requirements rather than relying solely on the nominal contact current.

The relay features silver nickel (AgNi) contacts, providing a cadmium-free contact material for suitable general-purpose switching applications. AgNi contacts are commonly used in electromechanical relays where consistent contact performance and reliable operation are required.

The Finder Series 40 design provides 6 kV impulse insulation and 8 mm clearance and creepage distance between the operating coil and switching contacts. These characteristics support electrical separation between low-voltage control electronics and switched circuits when the relay is installed within appropriately designed equipment.

For installation, the Finder 40.61.9.024.1000 supports direct PCB mounting or compatible Finder Series 95 socket arrangements. The selected installation method must account for terminal configuration, electrical clearances and the relevant current rating. A compatible socket may have a lower permissible current than the relay's direct PCB contact rating.

The relay's RT II flux-proof construction helps prevent soldering flux from entering the relay mechanism during suitable electronic assembly processes. This construction is not equivalent to RT III wash-tight protection, so any cleaning or washing process must be selected accordingly.

For maintenance or replacement, the complete 40.61.9.024.1000 ordering code should be checked. Similar Finder Series 40 relays may have different coil voltages, coil sensitivities, contact materials, environmental protection options or terminal arrangements. Matching the full specification is important for electrical and mechanical compatibility.

Typical Applications

• Industrial automation and machinery control.
• Electronic control equipment using 24 V DC supplies.
• Programmable logic controller output interfaces.
• Printed circuit board switching assemblies.
• Electrical control panels and auxiliary circuits.
• Industrial process control and monitoring systems.
• Building automation and electrical control equipment.
• Automatic door and gate control systems.
• Blind, grille and shutter automation.
• Electronic equipment manufacturing.
• Vending machine and appliance control equipment.
• Power management and compatible load switching.
• Control signalling and equipment status indication.
• Electrical interlocking and auxiliary switching.
• OEM control board manufacturing.
• Compatible Finder Series 95 socket-based installations.
• Maintenance and replacement of matching Finder Series 40 relays.