40.61.7.024.4020 Finder Miniature PCB relay 1pole 16A DC 24V

Why Choose the Finder 40.61.7.024.4020 Miniature PCB Power Relay?

The Finder 40.61.7.024.4020 is a compact 16 A miniature electromechanical power relay from the Finder Series 40 range, designed for printed circuit board applications, industrial automation and electrical control equipment. Featuring a 24 V DC sensitive coil, one changeover contact (1 CO / SPDT) and silver tin oxide (AgSnO2) contact material, this relay provides reliable switching between low-voltage electronic control circuits and compatible electrical loads.

Designed for direct PCB installation, the Finder 40.61.7.024.4020 features 3.5 mm terminal pins with a 5 mm contact pin pitch. Its compact construction makes it suitable for electronic assemblies where installation space is limited, while the sensitive DC coil helps minimise power consumption in the control circuit.

The relay combines a 16 A rated contact current with a 250 V AC rated contact voltage. Its AgSnO2 contacts provide favourable switching characteristics for suitable electrical loads, including applications where contact inrush performance is an important consideration. The standard RT II flux-proof construction supports integration into appropriate electronic manufacturing processes.

Key Advantages

• 16 A rated switching current for compatible electrical and industrial loads.
• 24 V DC sensitive coil suitable for common industrial control supplies.
• 0.5 W nominal coil consumption helps reduce control circuit power requirements.
• Single changeover contact provides normally open and normally closed switching functions.
• AgSnO2 contact material offers suitable switching characteristics for loads with elevated inrush currents.
• Direct PCB mounting simplifies integration into electronic control assemblies.
• 3.5 mm terminal pins provide the specified PCB connection arrangement.
• 5 mm contact pin pitch supports compact circuit board layouts.
• RT II flux-proof construction provides protection during suitable soldering processes.
• Monostable operation ensures the contacts return to their normal position when coil power is removed.
• 6 kV impulse insulation between coil and contacts supports electrical separation.
• Compact miniature housing saves space in industrial and electronic equipment.
• Established Finder Series 40 design supports dependable industrial automation applications.

Key Features

• Finder Series 40 miniature PCB power relay.
• Type 40.61 single-pole electromechanical relay.
• 24 V DC sensitive operating coil.
• 0.5 W nominal coil power consumption.
• Approximately 1.15 kΩ nominal coil resistance.
• One changeover contact (1 CO / SPDT).
• 16 A rated contact current.
• 250 V AC rated contact voltage.
• 400 V AC maximum switching voltage.
• Silver tin oxide (AgSnO2) contacts.
• 4,000 VA rated resistive switching load under AC-1 conditions.
• 750 VA rated inductive switching load under AC-15 conditions at 230 V AC.
• Monostable, non-latching switching mechanism.
• Direct through-hole PCB mounting.
• 3.5 mm terminal pin length.
• 5 mm contact pin pitch.
• RT II flux-proof environmental protection.
• Compact housing measuring approximately 29 × 12.4 × 25.1 mm.

Reliable PCB Switching for Industrial Automation and Electronic Control

The Finder 40.61.7.024.4020 provides an electromechanical interface between a 24 V DC control circuit and a compatible electrical load. When the operating coil is energised, the relay transfers its common contact from the normally closed terminal to the normally open terminal. Removing the coil supply allows the contacts to return to their normal position.

This monostable switching arrangement is suitable for control applications where the output must follow the energised or de-energised state of the control signal. It can be incorporated into electronic control boards, industrial machinery controllers and automation systems requiring an isolated switching contact.

The relay's silver tin oxide contacts provide useful switching characteristics for suitable loads that may experience elevated inrush currents. The Finder Series 40 documentation identifies a short-duration peak capability for AgSnO2 normally open contacts under specified conditions. This transient capability must not be confused with the relay's continuous 16 A rated current, and actual suitability must be checked against the connected load.

Its sensitive DC coil consumes approximately 0.5 W at the nominal supply voltage. This makes it practical for appropriately rated electronic relay drivers and industrial control interfaces. Where semiconductor outputs are used, suitable coil suppression should be considered to manage inductive switching transients.

The 3.5 mm PCB terminals and 5 mm contact pin pitch allow direct integration into printed circuit boards. The relay is supplied as an individual component rather than a complete socket assembly. PCB track dimensions, soldering conditions and electrical clearances must be selected according to the relay's current rating and the manufacturer's installation guidance.

Its RT II flux-proof protection supports appropriate PCB soldering processes by helping prevent flux ingress during manufacture. It is not equivalent to an RT III wash-tight construction, so cleaning processes involving liquid exposure must be selected accordingly.

Typical Applications

• Industrial automation and electronic control systems.
• Printed circuit board power-switching assemblies.
• Industrial machinery control electronics.
• Building automation and control equipment.
• Electrical distribution control circuits.
• Power management and load switching.
• Compatible lighting control applications.
• Electronic equipment using 24 V DC control supplies.
• Control signalling and auxiliary switching.
• OEM electronic control board manufacturing.
• Electrical circuits requiring changeover contacts.
• Automation equipment with compact PCB layouts.
• Maintenance and replacement of compatible Finder Series 40 PCB relays.