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40.61.7.024.1021 Finder Miniature PCB relay 1pole 16A DC 24V

40.61.7.024.1021 Finder Miniature PCB relay 1pole 16A DC 24V

Finder 40.61.7.024.1021 is a 16 A Series 40 miniature electromechanical power relay featuring a 24 V DC sensitive coil, one SPDT changeover contact and AgCdO contact material for compatible PCB and industrial control applications.

SKU: 40.61.7.024.1021Alt SKU: 406170241021MPN: 40.61.7.024.1021
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Why Choose the Finder 40.61.7.024.1021 Miniature Power Relay?

The Finder 40.61.7.024.1021 is a compact 16 A miniature electromechanical power relay designed for industrial automation, electrical load switching and electronic control equipment. Part of the Finder Series 40, this relay combines a sensitive DC coil with a single changeover contact to provide reliable switching in space-conscious electrical assemblies.

Featuring a 24 V DC sensitive coil, one changeover contact (SPDT / 1 CO) and a 16 A rated contact current, the Finder 40.61.7.024.1021 is suitable for controlling compatible electrical loads from a low-power control circuit. Its silver cadmium oxide (AgCdO) contact material distinguishes this variant from other Series 40 relays using alternative contact materials.

The relay uses the compact Finder 40.61 PCB/plug-in format, with a nominal housing size of 12.4 × 29 × 25 mm and 5 mm contact pin pitch. This makes it suitable for compatible printed circuit boards, relay sockets and industrial control assemblies where compact construction and dependable changeover switching are required.

Key Advantages

  • 16 A rated contact current for compatible electrical load switching.
  • 24 V DC sensitive coil for industrial and electronic control circuits.
  • Single changeover contact (SPDT / 1 CO) provides normally open and normally closed switching paths.
  • Approximately 0.5 W nominal coil power supports low-power control applications.
  • AgCdO contact material provides robust electromechanical switching characteristics.
  • 250 V AC rated contact voltage for suitable electrical loads.
  • 4000 VA AC1 switching capacity for compatible resistive loads.
  • Compact miniature housing supports space-efficient electrical equipment design.
  • PCB/plug-in construction provides installation flexibility.
  • Monostable operation automatically returns the contacts to their normal position when coil power is removed.
  • Suitable for industrial automation, machine control and electrical switching systems.
  • Part of the established Finder Series 40 miniature relay family.

Key Features

  • Finder Series 40 miniature power relay.
  • Type 40.61 single-pole changeover design.
  • 24 V DC nominal coil voltage.
  • Sensitive DC coil for reduced operating power.
  • Approximately 0.5 W nominal coil consumption.
  • Approximately 1.2 kΩ nominal coil resistance.
  • Approximately 20 mA nominal coil current.
  • 16 A rated contact current.
  • 250 V AC rated contact voltage.
  • 400 V AC maximum switching voltage.
  • 4000 VA rated AC1 switching capacity.
  • SPDT / 1 Form C / 1 CO contact configuration.
  • Silver cadmium oxide (AgCdO) contact material.
  • Monostable, non-latching electromechanical operation.
  • 5 mm contact pin pitch.
  • PCB mounting or installation in a compatible relay socket.
  • 12.4 × 29 × 25 mm nominal housing dimensions.
  • -40 to +85 °C operating temperature range under the applicable Series 40.61 conditions.
  • Suitable for control panels, machinery and electronic assemblies.

Dependable Electrical Switching with a Sensitive 24 V DC Coil

The Finder 40.61.7.024.1021 uses an electromagnetic coil to operate its single changeover contact. When the appropriate 24 V DC control voltage is applied, the relay energises and transfers its common contact from the normally closed terminal to the normally open terminal. When coil power is removed, the contact returns to its original position.

The sensitive DC coil operates with a nominal power consumption of approximately 0.5 W, making the relay suitable for compatible low-power electronic controllers and PLC interface circuits. Its 16 A changeover contact provides a separate switching path for electrical loads, subject to the specified contact voltage, utilisation category and installation conditions.

The AgCdO contact material is an important specification for this particular relay variant. Because silver cadmium oxide contains cadmium, engineers should verify the product's regulatory suitability, including any applicable RoHS restrictions or exemptions, before specifying it for new equipment. The exact contact material should also be considered when selecting a replacement relay.

For applications involving motors, transformers, capacitive loads or LED drivers, the load's inrush current and switching frequency should be assessed rather than relying solely on the resistive-load rating. PCB conductor sizing, relay socket ratings, coil suppression and suitable circuit protection should also be considered during installation.

Typical Applications

  • Industrial automation and machinery control.
  • PLC output interfacing with compatible coil drive circuits.
  • Electrical control panels and switching assemblies.
  • PCB-based electronic control equipment.
  • Industrial signalling and indication circuits.
  • Building automation and electrical control systems.
  • Auxiliary motor control and interlocking circuits.
  • Packaging and production machinery.
  • OEM electrical and electronic assemblies.
  • General-purpose electrical load switching.
  • Control logic and changeover switching applications.
  • Maintenance and replacement of compatible AgCdO relay variants.

Technical Specifications

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Device Type Plug-in Relay
Switching Current (A) 16 A
Manufacturer Finder
Series Series 40
Type 40.61
Manufacturer part number 40.61.7.024.1021
Product type Miniature electromechanical power relay
Relay technology Electromechanical
Relay operation Monostable, non-latching
Nominal coil voltage 24 V DC
Coil type Sensitive DC
Nominal coil resistance Approximately 1.2 kΩ
Nominal coil power Approximately 0.5 W
Nominal coil current Approximately 20 mA
Contact configuration 1 changeover (SPDT / 1 CO / 1 Form C)
Number of poles 1
Rated contact current 16 A
Rated contact voltage 250 V AC
Maximum AC switching voltage 400 V AC
Rated AC1 switching capacity 4000 VA
Contact material Silver cadmium oxide (AgCdO)
Contact pin pitch 5 mm
Mounting format PCB/plug-in relay
Nominal housing dimensions 12.4 × 29 × 25 mm
Operating temperature -40 to +85 °C under applicable Series 40.61 conditions
Primary application Electrical load switching and industrial control interfacing

Frequently Asked Questions

What is the Finder 40.61.7.024.1021 used for?

The Finder 40.61.7.024.1021 is a 16 A miniature electromechanical power relay used for switching compatible electrical loads in industrial automation, electronic equipment and electrical control systems. Its single changeover contact provides flexible switching from a low-voltage DC control circuit.

What coil voltage and power consumption does this relay have?

The relay features a 24 V DC sensitive coil with a nominal resistance of approximately 1.2 kΩ and nominal power consumption of approximately 0.5 W. It is designed for compatible DC control supplies.

What is the contact rating and configuration of the Finder 40.61.7.024.1021?

The relay has one changeover contact (SPDT / 1 CO) rated at 16 A and 250 V AC, with a maximum AC switching voltage of 400 V AC. The permissible load depends on the switching category and operating conditions.

What contact material does the Finder 40.61.7.024.1021 use?

The Finder 40.61.7.024.1021 uses silver cadmium oxide (AgCdO) contacts. Because this material contains cadmium, its suitability for new equipment should be checked against applicable environmental regulations and manufacturer documentation.

Is the Finder 40.61.7.024.1021 a latching relay?

No. The Finder 40.61.7.024.1021 is a monostable, non-latching relay. Its contacts change position while the coil is energised and return to their normal position when the coil supply is removed.

Designed for Electronics Engineers and Automation Professionals

Finder Series 40 miniature power relays provide compact electromechanical switching solutions for industrial automation, electronic equipment and electrical control systems. With its 24 V DC sensitive coil, 16 A changeover contact and AgCdO contact material, the Finder 40.61.7.024.1021 offers a practical solution for compatible industrial switching and replacement applications where the exact relay specification is required.