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66.22.8.240.4000 Finder Power relay 2pole 30A 240V
Finder 66.22.8.240.4000 is a PCB-mounted electromagnetic power relay featuring a 240 V AC coil, two DPDT changeover contacts, 30 A normally open contact rating and silver tin oxide contacts for industrial electrical switching and automation applications.
Why Choose the Finder 66.22.8.240.4000 Power Relay?
The Finder 66.22.8.240.4000 is a high-performance 30 A electromagnetic power relay designed for reliable switching of electrical loads in industrial control, automation and power distribution applications. Featuring a 240 V AC coil and two changeover contacts (DPDT), this relay provides versatile switching capabilities for demanding electrical control systems.
As part of the established Finder Series 66 power relay range, the 66.22.8.240.4000 combines high-current switching performance with durable silver tin oxide (AgSnO₂) contacts. Its double-pole changeover arrangement enables two independent circuits to be switched using a single control signal, making it suitable for machinery control, electrical equipment and industrial automation assemblies.
With a 30 A nominal normally open contact rating, 240 V AC coil supply and compact PCB mounting design, the Finder 66.22.8.240.4000 offers a practical solution for equipment manufacturers and control panel designers requiring dependable high-power switching. Its robust construction and industrial operating temperature range support reliable performance in demanding applications.
Key Advantages
- 30 A nominal normally open contact rating for switching substantial electrical loads.
- 240 V AC operating coil suitable for industrial control circuits.
- DPDT contact configuration provides two independent changeover switching circuits.
- AgSnO₂ contact material supports reliable switching and resistance to contact wear.
- PCB mounting construction enables integration into electronic control assemblies.
- High instantaneous contact current capability for appropriately rated switching applications.
- Wide operating temperature range supports use in demanding industrial environments.
- Established Finder Series 66 design for dependable power switching applications.
Key Features
- Finder Series 66.22 electromagnetic power relay.
- 240 V AC nominal coil voltage.
- 50/60 Hz AC coil operation.
- Two changeover contacts (2 CO / DPDT).
- 30 A nominal normally open contact current.
- 10 A nominal normally closed contact current.
- 250 V AC nominal switching voltage.
- 440 V AC maximum switching voltage.
- Silver tin oxide (AgSnO₂) contacts.
- 3.6 VA nominal coil consumption.
- PCB solder-terminal mounting.
- Operating temperature range of −40 to +70 °C.
- Compact relay body measuring 51.5 × 33.5 × 31 mm.
Reliable High-Current Switching for Industrial Control Systems
Electromagnetic power relays such as the Finder 66.22.8.240.4000 provide electrical switching by energising a coil that operates a mechanical contact assembly. When the 240 V AC coil is energised, the relay changes the state of its two changeover contacts, allowing electrical loads to be connected, disconnected or transferred between circuits according to the control system requirements.
The Finder Series 66 is engineered for applications requiring substantial contact current capacity and dependable switching performance. The use of AgSnO₂ contact material helps provide resistance to electrical wear, while the double-pole changeover arrangement allows flexible control of separate electrical circuits. The relay's PCB mounting format makes it suitable for integration into industrial electronic assemblies, power control boards and OEM equipment.
With a nominal normally open contact rating of 30 A and an operating temperature range extending from −40 to +70 °C, the 66.22.8.240.4000 is suitable for a broad range of industrial switching duties. Correct PCB conductor sizing, thermal management, contact protection and load-specific derating are essential when switching high currents, motors or inductive loads.
Typical Applications
- Industrial machinery and automation control systems.
- Power switching circuits in electrical control equipment.
- PCB-based industrial power control assemblies.
- Heating, ventilation and air conditioning (HVAC) equipment.
- Industrial heating and temperature control systems.
- Motor control and auxiliary switching circuits within the applicable contact ratings.
- Power distribution and load management equipment.
- Industrial process control and production machinery.
- OEM electrical equipment and electronic control boards.
- Commercial and industrial electrical switching applications.
Technical Specifications
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| Device Type | Power Relay | |
|---|---|---|
| Terminal Type | PCB / pins | |
| Mounting Type | PCB | |
| Load Voltage | 440 V AC | |
| Manufacturer | Finder | |
| Series | 66 Series Power Relays | |
| Model | 66.22.8.240.4000 | |
| Product type | Electromagnetic power relay | |
| Relay type | 66.22 PCB-mounted power relay | |
| Contact configuration | 2 CO / DPDT | |
| Number of poles | 2 | |
| 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 normally open contact current | 30 A | |
| Nominal normally closed contact current | 10 A | |
| Maximum instantaneous normally open contact current | 120 A for 5 ms | |
| Nominal switching voltage | 250 V AC | |
| Maximum switching voltage | 440 V AC | |
| Maximum DC switching voltage | 220 V DC | |
| Nominal AC-1 load, normally open contacts | 7,500 VA | |
| Nominal AC-1 load, normally closed contacts | 2,500 VA | |
| Contact material | Silver tin oxide (AgSnO₂) | |
| Electrical endurance | 100,000 cycles under specified test conditions | |
| Mechanical endurance | 10,000,000 cycles | |
| Operating temperature | −40 to +70 °C | |
| Mounting type | PCB mounting | |
| Terminal type | Solder pins | |
| Number of terminals | 16 | |
| Dimensions (L × W × H) | 51.5 × 33.5 × 31 mm | |
| Insulation between coil and contacts | Reinforced insulation | |
| Applicable relay standard | EN 61810-1 |
Frequently Asked Questions
What is the Finder 66.22.8.240.4000 used for?
The Finder 66.22.8.240.4000 is an electromagnetic power relay used to switch electrical loads in industrial automation, machinery control, HVAC equipment and power control circuits. Its two changeover contacts provide flexible switching of two independent circuits.
What is the coil voltage of the Finder 66.22.8.240.4000?
This relay features a 240 V AC nominal operating coil designed for 50/60 Hz supplies. The specified AC coil operating voltage range is 192–264 V AC.
What is the contact current rating of this relay?
The relay has a 30 A nominal normally open contact rating and a 10 A nominal normally closed contact rating. The normally open contacts also have a maximum instantaneous current rating of 120 A for 5 ms. Actual switching capacity depends on the load type, voltage and operating conditions.
What does DPDT mean on the Finder 66.22.8.240.4000?
DPDT (Double Pole Double Throw) means the relay contains two independent changeover contact sets. Each contact set can switch between normally closed and normally open connections when the relay coil is energised.
How is the Finder 66.22.8.240.4000 installed?
The Finder 66.22.8.240.4000 is designed for printed circuit board (PCB) mounting using solder terminals. It is suitable for integration into appropriately designed industrial electronic assemblies and power control boards.
What contact material is used in this relay?
The relay uses silver tin oxide (AgSnO₂) contacts, a contact material commonly selected for power switching applications because of its resistance to electrical wear and suitability for demanding switching duties.
Can this relay switch both AC and DC loads?
Yes. The Finder 66.22.8.240.4000 can switch AC and DC loads within its specified contact ratings. Its nominal switching voltage is 250 V AC, with maximum switching voltages of 440 V AC and 220 V DC. The permissible switching current must be checked against the applicable AC or DC load characteristics.
What is the operating temperature range?
The Finder 66.22.8.240.4000 is specified for operation at ambient temperatures from −40 to +70 °C, subject to the manufacturer's operating conditions and load limitations.
Trusted by Industrial Automation and Electrical Equipment Manufacturers
Finder Series 66 power relays provide robust electromagnetic switching solutions for industrial control equipment, machinery and power management applications. With high-current contacts, dependable coil operation and versatile mounting options across the series, they offer a practical choice for engineers and OEM manufacturers developing reliable electrical control systems.
