40.61.9.005.1001 Finder Miniature PCB relay 1pole 16A DC 5V

Finder 40.61.9.005.1001 – 16 A, 5 V DC Miniature PCB Power Relay

The Finder 40.61.9.005.1001 is a miniature electromechanical power relay from the Finder Series 40 range, designed for reliable switching in electronic control circuits, industrial automation equipment and printed circuit board assemblies.

Combining a 5 V DC standard coil with a 16 A single changeover contact (1 CO / SPDT), this compact relay enables a low-voltage control circuit to operate a separate electrical load. Its changeover arrangement provides both normally open and normally closed switching functions, making it suitable for a wide variety of control and automation applications.

The Finder Type 40.61 platform offers a 250 V AC rated contact voltage and a 4000 VA AC-1 switching capacity under specified conditions. Its compact construction makes it particularly useful where PCB space is limited but substantial switching capability is required.

The 40.61.9.005.1001 belongs to the standard DC-coil family, distinguishing it from the sensitive-coil versions identified by coil code 7. The complete .1001 construction suffix should be checked against Finder's current ordering documentation when selecting a replacement, particularly where contact material, enclosure classification or terminal dimensions are critical.

Key Advantages

• 16 A rated contact current for compatible electrical load switching.
• 5 V DC standard coil for low-voltage electronic control circuits.
• Single changeover contact (1 CO / SPDT) provides normally open and normally closed functionality.
• 250 V AC rated contact voltage for compatible mains-voltage circuits.
• 4000 VA AC-1 switching capacity for suitable resistive loads.
• Compact miniature construction for space-efficient PCB assemblies.
• Electromechanical isolation between the coil and switched contact circuit.
• Monostable operation ensures the contacts return to their normal position when coil power is removed.
• PCB and compatible socket installation offers flexible equipment integration.
• Finder Series 40 design suitable for industrial, commercial and OEM equipment.

Key Features

• Finder Series 40 miniature power relay.
• Type 40.61 single-pole changeover construction.
• Manufacturer part number: 40.61.9.005.1001.
• Rated contact current: 16 A.
• Nominal coil voltage: 5 V DC.
• Coil version: Standard DC.
• Contact configuration: 1 CO / SPDT.
• Rated contact voltage: 250 V AC.
• Maximum switching voltage: 400 V AC.
• Rated resistive-load switching capacity: 4000 VA.
• Monostable, non-latching operating principle.
• Compact PCB relay format.
• Compatible with selected Finder Series 95 relay sockets, subject to the exact terminal arrangement.
• Suitable for electronic equipment, industrial automation and control circuits.

Specification note: The exact part number was not independently confirmed against a current manufacturer listing. The core electrical characteristics above follow the Finder Type 40.61 family and its 5 V DC standard-coil designation. Variant-specific details such as contact material, coil resistance, environmental classification, terminal length and approvals should be checked against the latest Finder datasheet before purchasing or installing the relay.

5 V DC Standard Coil for Electronic Control Systems

The Finder 40.61.9.005.1001 uses a 5 V DC standard coil, allowing it to be controlled from a suitable low-voltage DC supply.

The 9.005 coil designation is important when identifying a replacement. In the Finder Series 40 ordering system, coil code 9 identifies a standard DC coil, while code 7 identifies a sensitive DC-coil version.

Although both types may have the same nominal voltage, they can have different coil resistance, operating current and power consumption.

For this reason, the Finder 40.61.9.005.1001 should not automatically be substituted with a Finder 40.61.7.005 variant without checking the electrical characteristics of the control circuit.

Where a microcontroller, programmable controller or electronic switching device operates the relay, the coil should be driven through a suitably rated output or relay-driver circuit.

Appropriate transient suppression should also be considered to protect sensitive electronic components when the relay coil is de-energised.

16 A Changeover Contact for Flexible Electrical Switching

The Finder Type 40.61 features one changeover contact (1 CO / SPDT), providing three electrical contact connections:

• Common (COM): The shared switching connection.
• Normally closed (NC): Connected to common when the relay is de-energised.
• Normally open (NO): Connected to common when the relay is energised.

When the 5 V DC coil is energised, the common contact transfers from the normally closed path to the normally open path. When the coil supply is removed, the contacts return to their normal position.

This switching arrangement makes the relay useful for electrical load control, changeover functions, equipment interlocking and signalling applications.

With a 16 A rated contact current, the Type 40.61 can switch substantial loads within the manufacturer's specified conditions.

However, the rated current must not be interpreted as a universal switching capability. Motors, transformers, solenoids, capacitive loads and LED drivers may produce high inrush currents or switching transients that require additional assessment.

Understanding Contact Ratings and Load Selection

The Finder Type 40.61 has a 250 V AC rated contact voltage and a 4000 VA AC-1 switching capacity.

The AC-1 utilisation category generally relates to non-inductive or slightly inductive loads, such as suitable resistive heating circuits.

Different load types can place significantly different demands on relay contacts:

• Resistive loads: Typically have comparatively low inrush current.
• Motor loads: Can draw substantially higher current during starting.
• Transformers: May produce a significant magnetising inrush current.
• Capacitive loads: Can produce high charging currents at switch-on.
• LED drivers: May generate short-duration inrush currents significantly above their steady-state operating current.

For demanding applications, the relay should be selected using the manufacturer's relevant load curves, contact material information and expected electrical life.

PCB tracks, terminals, connectors and any plug-in socket must also be appropriately rated for the intended operating current.

Monostable Operation for Predictable Control

The Finder 40.61.9.005.1001 is a monostable electromechanical relay.

Unlike a latching relay, a monostable relay requires its coil to remain energised to maintain the operated contact position.

When coil power is removed, an internal return mechanism restores the contacts to their normal state.

This makes monostable relays useful in control systems where the output should return to a predetermined position following removal of the control signal.

The actual behaviour of the connected equipment will depend on whether the normally open or normally closed contact is used and how the external circuit is designed.

Compact PCB and Compatible Socket Mounting

The Finder Series 40 range is designed for compact electronic assemblies and compatible plug-in relay installations.

The Type 40.61 platform uses a 5 mm contact terminal pitch and can be incorporated into suitable PCB designs.

Selected Finder Series 95 sockets also provide plug-in installation options, including DIN rail mounting where the correct socket is specified.

Before selecting a PCB footprint or socket, confirm the exact terminal configuration associated with the .1001 suffix.

Socket compatibility must be assessed mechanically and electrically. In particular, the socket's permissible current rating may be lower than the relay's 16 A contact rating.

Typical Applications

• Printed circuit board power switching.
• Industrial automation systems.
• Electronic equipment control boards.
• 5 V DC relay control circuits.
• Building automation equipment.
• Heating and ventilation control systems.
• Machine control electronics.
• Electrical load changeover circuits.
• Industrial monitoring and signalling equipment.
• Electronic appliance control assemblies.
• OEM electrical and electronic equipment.
• Compatible motor and actuator control circuits.
• Industrial maintenance and equipment repair.
• Replacement of matching Finder Series 40 relays.