66.22.8.240.4300 Finder Power relay 2pole 30A 240V

66.22.8.240.4300 Finder Power relay 2pole 30A 240V

Finder 66.22.8.240.4300 is a PCB-mounted electromagnetic power relay featuring a 240 V AC coil, two normally open contacts, a 30 A nominal contact rating and silver tin oxide contacts for industrial electrical switching and automation applications.

SKU: 66.22.8.240.4300Alt SKU: 662282404300MPN: 66.22.8.240.4300
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Why Choose the Finder 66.22.8.240.4300 Power Relay?

The Finder 66.22.8.240.4300 is a robust 30 A electromagnetic power relay designed for dependable high-current switching in industrial automation, electrical control and power management applications. Featuring a 240 V AC operating coil and two normally open contacts (2 NO / DPST-NO), this relay provides reliable simultaneous switching of two independent electrical circuits.

As part of the established Finder Series 66 power relay range, the 66.22.8.240.4300 combines substantial switching capacity with durable silver tin oxide (AgSnO₂) contacts and a compact PCB-mounted construction. Its normally open contact arrangement is designed for applications requiring two circuits to close when the relay coil is energised, making it suitable for industrial machinery, electrical equipment and automated control systems.

With a 30 A nominal contact current rating, 240 V AC coil supply and 250 V AC nominal switching voltage, the Finder 66.22.8.240.4300 is an effective solution for industrial load switching. Its reinforced coil-to-contact insulation and PCB solder-terminal mounting provide practical advantages for OEM equipment manufacturers and engineers designing reliable electrical control assemblies.

Key Advantages

  • 30 A nominal contact rating for demanding electrical switching applications.
  • 240 V AC operating coil suitable for industrial control circuits.
  • Two normally open contacts (DPST-NO) enable simultaneous switching of two independent circuits.
  • Silver tin oxide (AgSnO₂) contacts provide resistance to electrical wear and reliable switching performance.
  • PCB mounting design allows direct integration into electronic control assemblies.
  • 120 A maximum instantaneous contact current for 5 ms under specified conditions.
  • Reinforced insulation between coil and contacts supports electrical safety and circuit separation.
  • Wide operating temperature range supports demanding industrial environments.
  • Compact, durable construction suitable for industrial equipment and OEM applications.

Key Features

  • Finder Series 66.22 electromagnetic power relay.
  • 240 V AC nominal coil voltage.
  • 50/60 Hz AC coil operation.
  • Two normally open contacts (2 NO / DPST-NO).
  • 30 A nominal contact current.
  • 250 V AC nominal switching voltage.
  • 440 V AC maximum switching voltage.
  • 7,500 VA rated resistive load capacity (AC-1).
  • 3.6 VA nominal AC coil consumption.
  • AgSnO₂ silver tin oxide contact material.
  • Reinforced insulation between coil and contacts.
  • PCB solder-terminal mounting with double contact pin connections.
  • Operating temperature range of −40 to +70 °C.
  • Compact industrial relay construction for equipment integration.

Reliable High-Current Switching for Industrial Control Systems

Electromagnetic power relays such as the Finder 66.22.8.240.4300 provide electrically controlled switching through a coil-operated contact mechanism. When the 240 V AC coil is energised, the relay closes its two normally open contact sets, allowing two separate electrical circuits to be switched simultaneously. When the coil is de-energised, the contacts return to their normally open state.

The Finder Series 66 is designed for high-current switching applications where dependable operation, durable contacts and electrical insulation are important. The 66.22.8.240.4300 uses AgSnO₂ contact material to help resist electrical wear, while its two-pole normally open arrangement provides straightforward switching of resistive and appropriately rated inductive loads. Reinforced insulation between the coil and contact circuits supports integration into industrial control equipment.

Its PCB-mounted construction allows the relay to be incorporated into industrial electronic control boards, electrical switching modules and OEM equipment. The 30 A nominal contact rating and wide operating temperature range make it suitable for demanding applications, provided that PCB conductor sizing, thermal performance, protective devices and load-specific switching ratings are correctly considered during system design.

Typical Applications

  • Industrial machinery and automated production equipment.
  • High-current load switching in electrical control systems.
  • Industrial heating and temperature control equipment.
  • Heating, ventilation and air conditioning (HVAC) systems.
  • Commercial and industrial ovens and boilers.
  • Electrical generators and auxiliary power control equipment.
  • Industrial washing machines and process equipment.
  • Motor control circuits within the specified switching ratings.
  • PCB-based power switching and load management assemblies.
  • OEM electrical equipment and industrial automation systems.

Technical Specifications

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Device Type Power Relay
Terminal Type PCB / pins
Load Voltage 440 V AC
Mounting Type PCB
Manufacturer Finder
Series 66 Series Power Relays
Model 66.22.8.240.4300
Product type Electromagnetic power relay
Relay configuration 2 NO / DPST-NO
Number of poles 2
Contact operating arrangement Normally open
Nominal coil voltage 240 V AC
Coil frequency 50/60 Hz
Nominal coil current 15 mA
Coil resistance 5.5 kΩ
Nominal coil consumption 3.6 VA
AC coil operating voltage range 192–264 V AC
Nominal contact current 30 A
Maximum instantaneous contact current 120 A for 5 ms
Nominal switching voltage 250 V AC
Maximum switching voltage 440 V AC
Rated AC-1 load 7,500 VA
Rated AC-15 load at 230 V AC 1,200 VA
Single-phase motor rating at 230 V AC 1.5 kW
DC-1 breaking capacity at 24 V DC 25 A
DC-1 breaking capacity at 110 V DC 0.7 A
DC-1 breaking capacity at 220 V DC 0.3 A
Minimum switching load 1,000 mW (10 V / 10 mA)
Contact material Silver tin oxide (AgSnO₂)
Mechanical endurance 10,000,000 cycles
Operating temperature −40 to +70 °C
Mounting type PCB mounting
Terminal type Solder pins
Insulation Reinforced insulation between coil and contacts
Coil-to-contact clearance and creepage distance 8 mm
Applicable relay standard EN 61810-1

Frequently Asked Questions

What is the Finder 66.22.8.240.4300 used for?

The Finder 66.22.8.240.4300 is an electromagnetic power relay designed for switching electrical loads in industrial machinery, automation systems, heating equipment and power control applications. Its two normally open contacts allow two separate circuits to be switched simultaneously.

What is the coil voltage of the Finder 66.22.8.240.4300?

The relay features a 240 V AC nominal operating coil designed for 50/60 Hz supplies. Its specified AC coil operating voltage range is 192–264 V AC.

What is the contact current rating of this relay?

The Finder 66.22.8.240.4300 has a 30 A nominal contact current rating and a maximum instantaneous contact current of 120 A for 5 ms. The permissible switching current depends on the load type, voltage and operating conditions.

What does 2 NO or DPST-NO mean?

2 NO (two normally open contacts), also described as DPST-NO (Double Pole Single Throw – Normally Open), means the relay has two separate contact circuits that are open when the coil is not energised. Both contact circuits close when the relay coil is energised.

What is the difference between the Finder 66.22.8.240.4300 and 66.22.8.240.4000?

The Finder 66.22.8.240.4300 features two normally open contacts (2 NO), whereas the 66.22.8.240.4000 features two changeover contacts (2 CO / DPDT). Both use a 240 V AC coil, but their contact arrangements are different, so they are not direct functional replacements in every application.

How is the Finder 66.22.8.240.4300 installed?

The relay is designed for printed circuit board (PCB) mounting using solder terminals. Its construction allows integration into industrial electronic assemblies, power switching boards and OEM electrical equipment with suitable PCB layouts.

What contact material does this relay use?

The Finder 66.22.8.240.4300 uses silver tin oxide (AgSnO₂) contacts, which provide resistance to electrical wear and are suitable for demanding industrial power switching applications.

Can the Finder 66.22.8.240.4300 switch DC loads?

Yes. The relay can switch DC loads within its specified DC-1 breaking capacity. Typical resistive DC switching ratings include 25 A at 24 V DC, 0.7 A at 110 V DC and 0.3 A at 220 V DC. DC switching capacity is substantially dependent on voltage and load characteristics.

What is the operating temperature range?

The Finder 66.22.8.240.4300 is designed for ambient operating temperatures from −40 to +70 °C, subject to the manufacturer's specified operating conditions and applicable load limitations.

Trusted by Industrial Automation and Electrical Equipment Manufacturers

Finder Series 66 power relays are designed to deliver dependable high-current switching for industrial control equipment, electrical machinery and power management applications. Their robust electromagnetic construction, durable contact materials and versatile configurations make them a practical choice for engineers and OEM manufacturers developing reliable electrical control systems.