40.61.9.024.1300 Finder Miniature PCB relay 1pole 16A DC 24V

Finder 40.61.9.024.1300 – 16 A, 24 V DC Miniature PCB Power Relay with 1 NO Contact

The Finder 40.61.9.024.1300 is a compact 16 A miniature electromechanical power relay from the Finder Series 40 range. Featuring a 24 V DC standard coil and one normally open contact (1 NO / SPST-NO), it provides dependable electrical switching for printed circuit boards, industrial control equipment and automation systems.

Designed for applications where a low-voltage DC control signal must switch a separate electrical load, the Finder 40.61.9.024.1300 combines a high-current contact with a compact housing suitable for electronic equipment manufacturing and maintenance.

The relay has a 16 A rated switching current and a 250 V AC rated contact voltage. Its standard DC coil operates at 24 V DC, with a nominal consumption of approximately 0.65 W and a coil resistance of 900 Ω.

This particular version is listed with an RT II flux-proof enclosure, providing protection against flux penetration during suitable PCB soldering processes. The relay also uses the 5 mm contact pin pitch associated with Finder Type 40.61.

Important distinction: The Finder 40.61.9.024.1300 is identified in part-specific distributor listings as a 1 NO relay, not a changeover relay. This distinction is essential when selecting a replacement or designing a circuit.

Key Advantages

• 16 A rated contact current for compatible electrical power-switching applications.
• 24 V DC standard coil for industrial automation and electronic control systems.
• One normally open contact (1 NO / SPST-NO) for straightforward on/off load switching.
• 250 V AC rated contact voltage for suitable mains-voltage circuits.
• Approximately 0.65 W coil consumption for efficient electromechanical operation.
• 900 Ω nominal coil resistance for predictable control-circuit design.
• RT II flux-proof enclosure for compatible PCB soldering processes.
• Compact miniature construction for space-efficient electronic assemblies.
• 5 mm contact pin pitch for compatible PCB layouts.
• Monostable operation for automatic contact opening when the coil supply is removed.
• Finder Series 40 construction for industrial and OEM applications.
• RoHS-compliant listing in distributor product information.

Key Features

• Finder Series 40 miniature power relay.
• Type 40.61 single-pole construction.
• Manufacturer part number: 40.61.9.024.1300.
• Rated contact current: 16 A.
• Nominal coil voltage: 24 V DC.
• Coil type: Standard DC.
• Contact configuration: 1 NO / SPST-NO.
• Rated contact voltage: 250 V AC.
• Nominal coil resistance: 900 Ω.
• Nominal coil consumption: 0.65 W.
• Nominal coil current: approximately 26.7 mA.
• Enclosure classification: RT II flux-proof.
• Operating temperature range: −40 to +85 °C, subject to the manufacturer's operating conditions.
• Contact pin pitch: 5 mm.
• PCB and compatible plug-in mounting format.
• Monostable, non-latching operation.
• EAN: 8012823447353.

Specification note: Part-specific distributor listings consistently identify the 40.61.9.024.1300 as a 24 V DC, 16 A, 1 NO relay with a 900 Ω coil and RT II protection. Distributor information is inconsistent about the exact contact material, so that characteristic should be verified against Finder's latest documentation. Series-level ratings such as insulation and switching capacity should also be checked for the exact installation conditions.

24 V DC Standard Coil for Industrial Control Systems

The Finder 40.61.9.024.1300 operates using a 24 V DC standard coil, making it suitable for industrial control circuits powered by a compatible DC supply.

The nominal coil resistance is 900 Ω, resulting in a current draw of approximately 26.7 mA at the rated voltage.

Its nominal coil consumption is approximately 0.65 W.

This relatively modest current requirement makes the relay practical for use with suitably rated PLC transistor outputs, industrial controllers and electronic relay-driver circuits.

However, the control output must be capable of supplying the required current and withstanding the electrical transients associated with an inductive relay coil.

Where necessary, an appropriate flyback diode or alternative suppression device should be installed according to the control circuit design and manufacturer's recommendations.

The suppression method should be selected carefully because it can influence the relay's release time.

Understanding the 1 NO Contact Configuration

The Finder 40.61.9.024.1300 is listed with one normally open contact (1 NO / SPST-NO).

This contact configuration operates as follows:

• Coil de-energised: The normally open contact remains open, interrupting the connected circuit.
• Coil energised: The normally open contact closes, allowing current to flow through the connected load.
• Coil supply removed: The relay returns to its normal state and the contact opens again.

A normally open relay is particularly useful where a load should only receive power when an appropriate control signal is present.

Typical functions include switching compatible equipment, operating control circuits, activating electrical loads and providing status-controlled outputs.

Unlike a changeover relay, a 1 NO relay does not provide a normally closed switching path. This distinction must be considered when replacing a relay in an existing circuit.

16 A Contact Rating for Compatible Power Loads

The relay has a 16 A rated contact current and a 250 V AC rated contact voltage.

These characteristics support switching of suitable electrical loads, provided the installation remains within the manufacturer's specified limits.

The Finder Type 40.61 family has a standard 4000 VA AC-1 switching capacity for compatible resistive loads.

However, different electrical loads can produce significantly different switching demands:

• Resistive heating loads: Usually have relatively predictable steady-state current.
• Motors: Can draw substantially higher current during starting.
• Transformers: May produce significant magnetising inrush current.
• Solenoids: Can generate inductive switching transients.
• LED drivers: May produce high short-duration charging currents.
• Capacitive loads: Can create substantial inrush current when energised.

For these applications, the relevant utilisation category, inrush rating and electrical life must be checked rather than relying solely on the nominal 16 A contact rating.

RT II Flux-Proof Construction

The Finder 40.61.9.024.1300 is listed with an RT II flux-proof enclosure classification.

RT II construction is intended to reduce the risk of soldering flux entering the relay during suitable PCB assembly processes.

This makes the relay useful in electronic equipment manufacturing where through-hole components are installed and soldered to printed circuit boards.

It is important to distinguish RT II flux-proof construction from RT III wash-tight construction.

RT II does not indicate that the relay is suitable for unrestricted PCB washing or exposure to liquids. Any soldering and cleaning processes should follow the manufacturer's recommendations.

Electrical Isolation Between Coil and Contacts

The standard Finder Type 40.61 design provides substantial electrical separation between the low-voltage control coil and the switched contact circuit.

Series-level characteristics include 8 mm coil-to-contact creepage and clearance and a 6 kV impulse withstand voltage.

These features support applications where a low-voltage electronic control circuit must operate a separate electrical load circuit.

However, the complete equipment must still comply with applicable electrical safety requirements, including PCB layout, conductor sizing, insulation coordination, overcurrent protection and enclosure design.

Compact PCB and Plug-In Mounting

The Finder 40.61.9.024.1300 is designed for compact PCB and compatible plug-in relay applications.

Its standard body dimensions are approximately 29 × 12.4 × 25 mm, allowing integration into electronic equipment where space is limited.

The relay uses a 5 mm contact pin pitch, which should be considered when selecting a compatible PCB footprint.

Selected Finder Series 95 sockets may provide alternative mounting options, including DIN rail installation where the correct socket is used.

Before installation, confirm the relay's exact pin arrangement, terminal dimensions and socket compatibility using the manufacturer's dimensional drawing.

Any PCB copper tracks, solder joints, connectors or sockets used with the relay must be rated for the intended load current.

Difference Between the .1300 and Other Finder 40.61 Variants

The Finder Series 40 includes several relays that share the same basic housing and contact-current family but differ in coil voltage, contact configuration or construction.

The 40.61.9.024.1300 is distinguished by its:

• 24 V DC standard coil.
• 16 A rated contact current.
• Single normally open contact.
• RT II flux-proof enclosure.
• 900 Ω nominal coil resistance.

For replacement applications, it is essential to match the complete part number rather than selecting another Type 40.61 relay based solely on the coil voltage and current rating.

A changeover-contact version may have a different terminal arrangement or switching function, while a sensitive-coil version may require a different control current.

Typical Applications

• Industrial automation and machine control equipment.
• 24 V DC control circuits.
• Printed circuit board power switching.
• Programmable logic controller output interfaces.
• Electronic appliance control boards.
• Building automation systems.
• Heating, ventilation and air-conditioning equipment.
• Industrial monitoring and signalling systems.
• Electrical control panels.
• Compatible actuator and valve control circuits.
• OEM electronic manufacturing.
• Equipment activation and on/off switching.
• Industrial maintenance and repair.
• Replacement of matching Finder Series 40 relays.