40.61.9.018.1000 Finder Miniature PCB relay 1pole 16A DC 18V

Why Choose the Finder 40.61.9.018.1000 Miniature Power Relay?

The Finder 40.61.9.018.1000 is a compact 16 A electromechanical miniature power relay from the Finder Series 40, designed for dependable electrical switching in industrial automation, electronic control equipment and printed circuit board assemblies. Its compact construction and versatile contact configuration make it suitable for machinery control, auxiliary switching and OEM electronic equipment.

Featuring an 18 V DC nominal coil voltage, a single changeover contact (1 CO / SPDT) and a 16 A nominal contact rating, this relay provides an effective interface between low-voltage DC control circuits and compatible electrical loads. Its electromechanical operating principle provides galvanic separation between the control coil and switched contacts.

The Finder 40.61.9.018.1000 incorporates silver-nickel (AgNi) contacts and a standard DC coil configuration. Its PCB mounting format, monostable operation and established Series 40 design make it a practical component for automation engineers, electrical designers and electronic equipment manufacturers.

Key Advantages

• 18 V DC nominal coil: Designed for compatible DC control circuits and electronic equipment.
• 16 A nominal contact rating: Supports switching of appropriately rated electrical loads.
• Single changeover contact: Provides normally open and normally closed switching functions.
• Silver-nickel contacts: Provides an established contact material for general-purpose electrical switching.
• Compact PCB design: Supports space-efficient integration into electronic assemblies.
• Standard DC coil: Provides approximately 0.65 W nominal coil consumption.
• Galvanic separation: Electrically separates the control circuit from the switched load circuit.
• Monostable operation: Automatically returns the contact to its normal position when the coil is de-energised.

Key Features

• Finder Series 40 miniature electromechanical power relay.
• 18 V DC nominal coil voltage.
• 16 A nominal contact current.
• 1 CO (SPDT) changeover contact configuration.
• Silver-nickel (AgNi) contact material.
• 500 Ω nominal coil resistance.
• Approximately 0.65 W nominal DC coil consumption.
• 36 mA nominal coil current.
• Compact PCB mounting arrangement.
• 5 mm contact pin pitch associated with the Finder 40.61 relay type.
• Monostable, non-latching electromechanical operation.
• Normally open and normally closed contact functionality.
• Suitable for compatible Finder Series 95 relay socket arrangements.
• Designed for industrial automation, auxiliary switching and electronic control applications.

Reliable 18 V DC Coil Operation

The Finder 40.61.9.018.1000 operates through an electromagnetic coil that changes the position of its single changeover contact. When the 18 V DC coil is energised, the common contact transfers from the normally closed terminal to the normally open terminal. Removing the coil supply allows the contact to return to its original position, providing straightforward control of compatible electrical circuits.

The standard DC coil has a nominal resistance of 500 Ω and draws approximately 36 mA at its rated voltage, corresponding to approximately 0.65 W of nominal coil consumption. Finder's Series 40 coil specifications identify an operating voltage range of 13.1–27 V DC for the 18 V standard DC coil, subject to the manufacturer's specified operating conditions.

Silver-Nickel Contacts and 16 A Switching Performance

The Finder 40.61.9.018.1000 features silver-nickel (AgNi) contacts, providing a contact material suitable for general-purpose electrical switching applications. Its single changeover arrangement allows a common terminal to switch between normally closed and normally open circuits, supporting a variety of electrical control functions.

With a 16 A nominal contact current and a rated contact voltage of 250 V AC, the Finder 40.61 relay type is suitable for compatible auxiliary load switching. The Series 40 contact specifications include a maximum switching voltage of 400 V AC and a resistive switching capacity of 4,000 VA under AC-1 conditions. Actual permissible switching capacity depends on the load type, applied voltage, inrush current, switching frequency and operating conditions.

Typical Applications

• Industrial automation and machinery control systems.
• Printed circuit board relay switching assemblies.
• 18 V DC electronic control circuits.
• Auxiliary electrical load switching.
• Electronic equipment and embedded control systems.
• Building automation and equipment control.
• Electrical signalling and interlocking circuits.
• Industrial process control equipment.
• OEM machinery and electronic product manufacturing.
• Control interfaces requiring galvanically separated switching circuits.