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40.61.9.021.1301 Finder Miniature PCB relay 1pole 16A DC 21V

40.61.9.021.1301 Finder Miniature PCB relay 1pole 16A DC 21V

Finder 40.61.9.021.1301 miniature electromechanical power relay featuring a 21 V DC coil and 16 A SPDT changeover contact, designed for industrial automation, electrical switching and electronic control applications.

SKU: 40.61.9.021.1301Alt SKU: 406190211301MPN: 40.61.9.021.1301
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Why Choose the Finder 40.61.9.021.1301 Miniature Power Relay?

The Finder 40.61.9.021.1301 is a compact and reliable 16 A electromechanical power relay designed for switching electrical loads in industrial automation, machinery control and electronic equipment. As part of the established Finder 40 Series miniature PCB and plug-in relay range, it combines dependable switching performance with a space-saving design suitable for modern electrical control systems.

Featuring a 21 V DC electromagnetic coil and a single-pole changeover (SPDT) contact configuration, this relay enables a low-power control signal to operate a separate electrical circuit. Its changeover contact provides both normally open and normally closed switching functions, allowing flexible integration into automated machinery, control panels and electronic switching assemblies.

With a 16 A rated contact current and a 250 V AC rated contact voltage, the Finder 40.61.9.021.1301 is suitable for switching appropriately rated resistive and inductive loads, including lighting circuits, control equipment and industrial machinery. Its compact construction, robust electrical insulation and PCB-compatible terminal design make it a practical solution for OEM equipment manufacturers and industrial automation engineers.

Key Advantages

  • Compact 16 A miniature power relay designed for industrial electrical switching.
  • 21 V DC nominal coil voltage for compatible low-voltage control circuits.
  • Single-pole changeover (SPDT / 1 CO) contact provides flexible switching functionality.
  • 250 V AC rated contact voltage for suitable industrial and commercial electrical loads.
  • 0.65 W nominal coil power consumption for efficient electromagnetic operation.
  • High electrical isolation between the control coil and switching contacts.
  • Compact construction suitable for space-constrained PCB assemblies and electrical equipment.
  • Reliable electromechanical switching for industrial automation and machine control.
  • Part of the established Finder 40 Series relay family.

Key Features

  • Finder 40 Series miniature power relay.
  • 21 V DC standard electromagnetic coil.
  • 16 A rated contact switching current.
  • 1 CO (SPDT) changeover contact configuration.
  • 250 V AC rated contact voltage.
  • 400 V AC maximum switching voltage for the 40.61 series.
  • 4,000 VA rated resistive switching capacity under AC1 conditions.
  • 0.65 W nominal DC coil consumption.
  • 700 Ω nominal coil resistance.
  • 30 mA nominal coil current.
  • 15.3–31.5 V DC coil operating range.
  • 6 kV coil-to-contact impulse withstand voltage for the series.
  • 8 mm coil-to-contact creepage and clearance within the series design.
  • Monostable, non-latching electromagnetic operation.
  • PCB-compatible miniature relay construction.
  • Suitable for industrial control, electronic switching and automation applications.

Reliable Electrical Switching for Industrial Automation

Electromechanical relays such as the Finder 40.61.9.021.1301 provide electrical switching by energising an electromagnetic coil, which mechanically changes the position of the relay contacts. This allows a low-voltage DC control circuit to operate a separate electrical load while maintaining galvanic isolation between the coil and contact circuits.

The Finder 40.61 relay series is designed for industrial and electronic applications where compact dimensions, dependable contact operation and electrical insulation are essential. Its changeover contact configuration provides flexibility for switching, interlocking and control functions, while its robust construction supports integration into automated machinery and industrial electronic systems.

Typical Applications

  • Industrial automation and machine control systems.
  • Printed circuit board control assemblies.
  • Electrical control panels and switching equipment.
  • Industrial machinery and OEM automation systems.
  • Lighting control and electrical switching circuits.
  • Building automation and control equipment.
  • Electronic power supply and interface circuits.
  • Packaging and production machinery.
  • Commercial electrical equipment and control systems.
  • Motor control and auxiliary switching circuits within the relay's specified load ratings.

Technical Specifications

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Device Type Plug-in Relay
Mounting Type PCB
Switching Current (A) 16 A
Load Voltage 400 V AC
Manufacturer Finder
Series 40 Series Miniature PCB / Plug-in Relays
Model 40.61.9.021.1301
Product type Electromechanical power relay
Relay configuration Single-pole changeover (SPDT / 1 CO)
Number of poles 1
Nominal coil voltage 21 V DC
Coil type Standard DC electromagnetic coil
Nominal coil power 0.65 W
Nominal coil resistance 700 Ω
Nominal coil current 30 mA
Coil operating voltage range 15.3–31.5 V DC
Rated contact current 16 A
Rated contact voltage 250 V AC
Maximum switching voltage 400 V AC
Rated resistive load (AC1) 4,000 VA
Rated inductive load (AC15 at 230 V AC) 1,000 VA
Single-phase motor rating (230 V AC) 0.55 kW
Contact arrangement 1 normally open and 1 normally closed contact with common terminal
Relay operation Monostable / non-latching
Contact switching mechanism Electromechanical
Mechanical life 10 million operations (40.61 series)
Electrical life at rated AC1 load 100,000 operations (40.61 series)
Coil-to-contact impulse withstand voltage 6 kV (1.2/50 µs)
Coil-to-contact creepage and clearance 8 mm
Dielectric strength between open contacts 1,000 V AC
Operating ambient temperature −40 to +85 °C (standard series)
Mounting type PCB-compatible relay construction
Application category Industrial automation and electrical switching

Frequently Asked Questions

What is the Finder 40.61.9.021.1301 used for?

The Finder 40.61.9.021.1301 is a miniature electromechanical power relay designed to switch electrical loads in industrial automation, machinery control, electronic equipment and electrical control circuits.

What coil voltage does the Finder 40.61.9.021.1301 require?

The relay uses a 21 V DC nominal coil. The standard DC coil specification provides an operating voltage range of approximately 15.3–31.5 V DC.

What is the contact current rating of this relay?

The Finder 40.61 series features a 16 A rated changeover contact with a rated contact voltage of 250 V AC. The permissible switching current depends on the load type, operating conditions and applicable electrical ratings.

What contact configuration does the Finder 40.61.9.021.1301 have?

The relay features a single-pole double-throw (SPDT) contact arrangement, also known as one changeover contact. This provides a common terminal, a normally open contact and a normally closed contact for flexible switching functions.

Where is the Finder 40.61.9.021.1301 typically installed?

The relay is designed for integration into PCB-based electronic assemblies, industrial automation equipment and electrical control systems. Installation must follow the applicable terminal configuration, mounting requirements and electrical load ratings.

Trusted by Industrial Automation Professionals Worldwide

Finder 40 Series miniature power relays are used in industrial automation, electronic equipment and electrical control applications where dependable switching and compact construction are essential. The Finder 40.61.9.021.1301 combines a 21 V DC electromagnetic coil with a 16 A changeover contact, providing a practical switching solution for machinery manufacturers, control panel builders and industrial automation engineers.