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66.82.9.024.4001 Finder Power relay 2pole 30A DC 24V
Finder 66.82.9.024.4001 is a Series 66 DPDT electromagnetic power relay with a 24 V DC coil, 30 A normally open contacts, silver tin oxide contact material, washable RT III construction, reinforced insulation and Faston terminals with flange mounting for industrial automation and electrical power switching.
Why Choose the Finder 66.82.9.024.4001 Power Relay?
The Finder 66.82.9.024.4001 is a high-performance 30 A electromagnetic power relay from the Finder Series 66 range, designed for reliable electrical switching in industrial automation, machinery control and power distribution equipment. Featuring a 24 V DC operating coil, two changeover contacts (DPDT) and silver tin oxide (AgSnO2) contact material, this relay offers a robust solution for controlling demanding electrical loads.
The Finder 66.82 design combines high-current switching capability with reinforced insulation between the coil and contacts. Its double-pole changeover arrangement provides two independent switching circuits, allowing normally open and normally closed functions to be controlled simultaneously by a single 24 V DC signal. This makes the relay suitable for electrical control systems requiring flexible switching, circuit selection and dependable load management.
Designed for practical industrial installation, the Finder 66.82.9.024.4001 features Faston 250 quick-connect terminals and a top-flange mounting arrangement. The .4001 ordering suffix identifies a silver tin oxide contact configuration with the washable RT III construction option. This makes the relay particularly relevant to equipment manufacturing processes where protection against cleaning or washing operations is required, subject to Finder's handling and installation instructions.
Key Advantages
- 30 A normally open contact rating for high-current industrial switching applications.
- 24 V DC operating coil suitable for common industrial control power supplies.
- DPDT contact configuration provides two independent changeover circuits.
- Silver tin oxide (AgSnO2) contacts offer robust switching performance and resistance to contact welding.
- Washable RT III construction provides additional environmental protection during suitable equipment assembly processes.
- Reinforced insulation between coil and contacts supports electrical safety and circuit separation.
- 8 mm creepage and clearance distances provide substantial electrical separation.
- Faston 250 quick-connect terminals simplify wiring and electrical connections.
- Top-flange mounting enables secure installation in machinery and electrical enclosures.
- Two changeover contacts provide both normally open and normally closed switching functions.
- Non-latching electromechanical operation returns the contacts to their normal state when coil power is removed.
- Finder Series 66 construction supports dependable operation in industrial equipment.
Key Features
- Finder Series 66 industrial power relay.
- 24 V DC rated coil voltage.
- DC-operated electromagnetic coil.
- DPDT (2 Form C) contact configuration.
- Two changeover contacts with normally open and normally closed connections.
- 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.
- 7,500 VA AC1 switching capacity for normally open contacts.
- 2,500 VA AC1 switching capacity for normally closed contacts.
- 1.7 W nominal DC coil consumption for the standard Series 66 coil design.
- Silver tin oxide (AgSnO2) contact material.
- RT III washable construction indicated by the .4001 suffix.
- 6 kV coil-to-contact impulse withstand voltage in the Series 66 design.
- 8 mm creepage and clearance distances between coil and contacts.
- Faston 250 (6.3 × 0.8 mm) quick-connect terminals.
- Top-flange / chassis mounting.
- −40 to +70 °C standard Series 66 ambient temperature range, subject to the exact version and operating conditions.
Dependable 24 V DC Power Relay Switching for Industrial Automation
The Finder 66.82.9.024.4001 operates through a 24 V DC electromagnetic coil that controls two mechanically linked changeover contacts. When the coil is energised, each common contact transfers from its normally closed connection to its normally open connection. When the coil supply is removed, the contacts return to their normal positions. This provides a reliable method of switching two electrical circuits using a single control signal.
The DPDT contact arrangement offers greater switching flexibility than a relay with normally open contacts only. It can be used for load switching, circuit selection, status signalling and other industrial control functions. The different current ratings of the normally open and normally closed contacts must be considered during circuit design, particularly when controlling motors, heaters, inductive loads or equipment with high inrush currents.
The relay's AgSnO2 contact material provides a robust switching interface, while the Series 66 reinforced insulation design supports electrical separation between the 24 V DC control circuit and the connected power circuits. The standard two-changeover configuration provides 30 A normally open contacts and 10 A normally closed contacts, with a maximum switching voltage of 440 V AC.
The RT III washable version is designed to provide greater protection against cleaning processes than the standard RT II construction. Combined with Faston 250 terminals and flange mounting, the relay offers a practical solution for OEM equipment manufacturers, industrial maintenance engineers and control panel builders who require a directly wired, high-current power relay.
Typical Applications
- Industrial automation and machinery control systems.
- 24 V DC control circuits requiring high-current load switching.
- Electrical power distribution and switching equipment.
- Industrial heating systems, ovens and boiler controls.
- Heating, ventilation and air conditioning (HVAC) equipment.
- Industrial motor control circuits, subject to appropriate load ratings.
- Electrical generators and standby power control systems.
- Power management and electrical switching panels.
- Industrial process control and monitoring equipment.
- OEM machinery requiring washable relay construction during assembly.
- Electrical control cabinets and industrial equipment enclosures.
- Two-circuit changeover switching and electrical control applications.
Technical Specifications
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| Device Type | Power Relay | |
|---|---|---|
| Terminal Type | Faston / flat-pin | |
| Load Voltage | 440 V AC | |
| Manufacturer | Finder | |
| Series | 66 Series Power Relays | |
| Manufacturer part number | 66.82.9.024.4001 | |
| Product type | Electromagnetic power relay | |
| Relay operation | Electromechanical, non-latching | |
| Contact configuration | DPDT (double-pole double-throw) | |
| Contact form | 2 Form C | |
| Number of poles | 2 | |
| Number of changeover contacts | 2 | |
| Rated coil voltage | 24 V DC | |
| Coil type | DC operated | |
| Standard Series 66 DC coil consumption | 1.7 W | |
| Standard DC coil operating range | 0.8 to 1.1 times nominal voltage | |
| Rated normally open contact current | 30 A | |
| Rated normally closed contact current | 10 A | |
| Maximum peak current, normally open contacts | 120 A for 5 ms with AgSnO2 contacts | |
| Maximum peak current, normally closed contacts | 20 A for 5 ms | |
| Nominal switching voltage | 250 V AC | |
| Maximum switching voltage | 440 V AC | |
| Rated AC1 switching capacity, NO | 7,500 VA | |
| Rated AC1 switching capacity, NC | 2,500 VA | |
| Rated AC15 switching capacity at 230 V AC, NO | 1,200 VA | |
| Single-phase motor rating at 230 V AC, NO | 1.5 kW | |
| DC1 breaking capacity at 24 V DC, NO | 25 A | |
| DC1 breaking capacity at 110 V DC, NO | 0.7 A | |
| DC1 breaking capacity at 220 V DC, NO | 0.3 A | |
| Minimum switching load | 1,000 mW (10 V / 10 mA) | |
| Contact material | Silver tin oxide (AgSnO2) | |
| Contact material characteristic | Cadmium-free | |
| Insulation type | Reinforced insulation between coil and contacts | |
| Series coil-to-contact impulse withstand voltage | 6 kV (1.2/50 µs) | |
| Series creepage and clearance distance | 8 mm between coil and contacts | |
| Series dielectric strength between open contacts | 1,500 V AC | |
| Environmental protection | RT III washable construction | |
| Standard Series 66 ambient temperature range | −40 to +70 °C | |
| Mounting type | Top-flange / chassis mounting | |
| Terminal type | Faston 250 quick-connect terminals | |
| Terminal dimensions | 6.3 × 0.8 mm | |
| Application category | Industrial power switching and automation control |
Frequently Asked Questions
What is the Finder 66.82.9.024.4001 used for?
The Finder 66.82.9.024.4001 is a 30 A industrial electromagnetic power relay designed for electrical load switching in automation systems, machinery control and power management equipment. Its two changeover contacts allow a single 24 V DC control signal to operate two electrical switching circuits.
What coil voltage does the Finder 66.82.9.024.4001 require?
The relay uses a 24 V DC nominal operating coil. The standard Finder Series 66 DC coil design has a nominal consumption of approximately 1.7 W and an operating range of 0.8 to 1.1 times the nominal coil voltage. The supply should be selected in accordance with Finder's electrical specifications.
What is the contact rating of the Finder 66.82.9.024.4001?
The standard Finder Series 66 two-changeover configuration provides a 30 A normally open contact rating and a 10 A normally closed contact rating. The nominal switching voltage is 250 V AC, with a maximum switching voltage of 440 V AC. Permissible switching loads depend on the load type and operating conditions.
What does DPDT mean on the Finder 66.82.9.024.4001?
DPDT means double-pole double-throw. The relay contains two independent changeover contacts, each with a common, normally open and normally closed connection. Energising the 24 V DC coil transfers both contacts simultaneously, providing flexible switching and circuit selection.
What does the .4001 suffix mean, and how is the relay mounted?
The .4001 suffix identifies silver tin oxide (AgSnO2) contacts, a changeover contact arrangement and the RT III washable construction option. The Finder 66.82 relay uses top-flange / chassis mounting and Faston 250 (6.3 × 0.8 mm) quick-connect terminals for direct wiring and secure installation in industrial equipment.
Trusted by Industrial Automation and Electrical Engineers Worldwide
Finder Series 66 power relays provide robust electromechanical switching solutions for industrial automation, machinery control and electrical power management. Combining 30 A normally open contact capability, a 24 V DC operating coil, silver tin oxide contacts, reinforced insulation and washable RT III construction, the Finder 66.82.9.024.4001 offers a versatile switching solution for engineers and equipment manufacturers requiring dependable industrial relay performance.
