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Finder 45.71.7.009.0310 - 45 Series Miniature PCB relays

Finder 45.71.7.009.0310 – 45 Series Miniature PCB relays

Finder 45.71.7.009.0310 – 45 Series Miniature PCB relays.

SKU: 45.71.7.009.0310Alt SKU: 457170090310MPN: 45.71.7.009.0310
This product has been discontinued A direct replacement is available below.
Finder 45.71.7.009.1310 - 45 Series Miniature PCB relays Replacement product Finder 45.71.7.009.1310 - 45 Series Miniature PCB relays SKU: 45.71.7.009.1310 View

Why Choose the Finder 45.71.7.009.0310 Miniature PCB Power Relay?

The Finder 45.71.7.009.0310 is a 16 A miniature electromagnetic power relay designed for printed circuit board mounting with additional Faston 250 connections. Part of the Finder Series 45 range, this relay features a 9 V DC sensitive coil and a single-pole normally open (SPST-NO) contact, providing dependable electrical switching for industrial equipment, electronic control assemblies and appliance applications.

Rated for 16 A at 250 V AC under specified load conditions, the Finder 45.71.7.009.0310 combines a high-current switching capability with a 360 mW DC coil. Its 3 mm contact gap and silver cadmium oxide (AgCdO) contact material make it suitable for applications requiring a defined normally open switching arrangement.

The relay incorporates PCB and Faston 250 connection facilities, allowing integration into equipment requiring both circuit board mounting and blade-terminal connections. With its RT II flux-proof construction and high-temperature design rated up to +125 °C, it is suitable for demanding electrical control applications when installed within the manufacturer's specified limits.

Key Advantages

  • 16 A switching capacity supports suitable higher-current electrical loads.
  • 9 V DC sensitive coil provides compatibility with appropriate low-voltage control circuits.
  • Single normally open contact provides straightforward on/off switching.
  • 360 mW coil consumption supports efficient electromagnetic relay operation.
  • PCB mounting with Faston 250 connections offers flexible integration into electrical equipment.
  • 3 mm contact opening provides a defined contact separation distance.
  • AgCdO contact material is specified for the relay's electrical switching contacts.
  • High-temperature construction supports applications with ambient temperatures up to +125 °C, subject to operating conditions.
  • RT II flux-proof protection supports suitable PCB soldering processes.
  • Monostable operation returns the contact to its normal state when the coil is de-energised.

Key Features

  • Finder Series 45 miniature power relay.
  • Type 45.71 PCB and Faston 250 connection design.
  • 9 V DC nominal coil voltage.
  • 16 A rated switching current.
  • 250 V AC contact rating.
  • One normally open contact (1 NO / SPST-NO).
  • 360 mW nominal coil power.
  • 225 Ω nominal coil resistance.
  • 3 mm contact gap.
  • Silver cadmium oxide (AgCdO) contacts.
  • PCB and Faston 250 terminal connections.
  • RT II flux-proof construction.
  • High-temperature version rated up to +125 °C.
  • Non-polarised, monostable DC coil operation.

High-Current Normally Open Switching with PCB and Faston Connections

The Finder 45.71.7.009.0310 operates through a 9 V DC electromagnetic coil controlling one normally open contact. When the coil is energised, the contact closes to complete the connected electrical circuit. When coil power is removed, the relay returns to its normally open state. This makes the relay suitable for equipment requiring controlled switching of an electrical load using a separate low-voltage signal.

Its 16 A contact rating, 3 mm contact opening and PCB plus Faston 250 connection arrangement make the relay particularly relevant to equipment control boards, heating systems and industrial switching assemblies. Designers should check the appropriate contact derating for inductive, capacitive and motor loads, together with PCB conductor capacity, terminal compatibility and thermal conditions. The RT II classification describes flux-proof relay construction and should not be interpreted as a waterproof or wash-tight rating.

Typical Applications

  • Industrial electronic control boards.
  • Heating equipment and burner control systems.
  • Boilers and furnace control circuits.
  • Electrical appliance control assemblies.
  • Industrial automation and machinery controls.
  • Ventilation and extractor fan control equipment.
  • Door and gate operating systems.
  • Backup generator control equipment.
  • Electronic switching and power control circuits.
  • OEM equipment requiring PCB and Faston 250 relay connections.

Technical Specifications

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Device Type PCB Relay
Terminal Type Faston / flat-pin
Switching Current (A) 16 A
Load Voltage 250 V AC
Mounting Type PCB
Manufacturer Finder
Series 45
Relay type 45.71
Manufacturer part number 45.71.7.009.0310
Product category Miniature PCB Power Relays
Relay technology Electromagnetic
Contact configuration SPST-NO / 1 NO / 1 Form A
Number of poles 1
Nominal coil voltage 9 V DC
Nominal coil power 0.36 W
Nominal coil resistance 225 Ω
Nominal coil current 40 mA
Rated contact current 16 A
Rated switching voltage 250 V AC
Maximum inrush current 30 A
Contact gap 3 mm
Contact material Silver cadmium oxide (AgCdO)
Operating principle Monostable, non-latching
Coil polarity Non-polarised
Mounting method PCB mounting
Connection type PCB and Faston 250
Protection classification RT II (flux-proof)
Enclosure protection IP40
High-temperature rating Up to +125 °C
Approximate overall dimensions 40.7 × 12.5 × 28.5 mm

Frequently Asked Questions

What is the Finder 45.71.7.009.0310 used for?

The Finder 45.71.7.009.0310 is a miniature electromagnetic power relay used for electrical load switching in industrial control equipment, electronic assemblies, heating systems and appliance control circuits.

What is the coil voltage of the Finder 45.71.7.009.0310?

The relay has a 9 V DC nominal coil with a nominal power consumption of 360 mW and a resistance of 225 Ω.

What is the contact rating of the Finder 45.71.7.009.0310?

The relay has a 16 A rated contact current at 250 V AC under the specified switching conditions. Other load types may require derating.

Does the Finder 45.71.7.009.0310 have normally open or changeover contacts?

The relay has one normally open contact (1 NO / SPST-NO). It does not provide an SPDT changeover contact.

What connection types does the Finder 45.71.7.009.0310 use?

The relay is designed for PCB mounting with Faston 250 connections, allowing integration into compatible electronic and electrical equipment assemblies.

What is the contact gap of the Finder 45.71.7.009.0310?

The relay has a specified 3 mm contact gap when its normally open contact is in the open position.

Is the Finder 45.71.7.009.0310 suitable for high-temperature applications?

Yes. This is a high-temperature relay version rated up to +125 °C, subject to the manufacturer's operating conditions and electrical derating requirements.

What does RT II mean for the Finder 45.71.7.009.0310?

RT II indicates a flux-proof relay construction intended to resist flux penetration during appropriate soldering processes. It does not mean that the relay is waterproof or suitable for unrestricted washing.

Trusted by Industrial Automation Engineers and Electrical Equipment Manufacturers

Finder Series 45 relays provide practical electromagnetic switching solutions for industrial equipment, electronic control boards and appliance applications. The 45.71.7.009.0310 combines a 9 V DC sensitive coil, 16 A normally open contact, 3 mm contact gap and PCB plus Faston 250 connections for reliable switching within its specified operating limits.