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66.82.9.024.4303 Finder Power relay 2pole 30A DC 24V
Finder 66.82.9.024.4303 is a flange-mounted 30 A electromagnetic power relay featuring a 24 V DC coil, two normally open silver tin oxide contacts, Faston 250 terminals and an ATEX / HazLoc special-version configuration for industrial electrical load switching.
Why Choose the Finder 66.82.9.024.4303 Power Relay?
The Finder 66.82.9.024.4303 is a high-performance 30 A electromagnetic power relay designed for reliable electrical load switching in industrial automation, machinery and electrical control equipment. Featuring a 24 V DC operating coil, two normally open contacts (2 NO / DPST-NO) and silver tin oxide (AgSnO₂) contact material, this relay combines substantial switching capability with dependable electromechanical operation.
Part of the established Finder Series 66 power relay range, the 66.82.9.024.4303 features flange mounting and Faston 250 quick-connect terminals for straightforward integration into compatible industrial equipment. Its two normally open contacts operate simultaneously when the coil is energised, allowing two electrical circuits to be controlled through a common low-voltage DC signal.
A distinguishing feature of the Finder 66.82.9.024.4303 is its ATEX and HazLoc special-version configuration, developed for incorporation into electrical equipment intended for specified hazardous locations. With a 30 A nominal contact rating, 120 A maximum peak contact current for 5 ms and reinforced coil-to-contact insulation, it provides a versatile solution for OEM manufacturers and industrial control engineers.
Key Advantages
- 30 A nominal contact rating supports demanding industrial electrical load switching.
- 24 V DC operating coil integrates with compatible low-voltage automation and control systems.
- Two normally open contacts (DPST-NO) enable simultaneous switching of two independent circuits.
- AgSnO₂ contact material provides resistance to electrical wear and supports high-current switching applications.
- 120 A maximum peak contact current for 5 ms provides short-duration peak current capability under specified conditions.
- ATEX and HazLoc special-version construction supports appropriately designed hazardous-location electrical equipment.
- Flange-mounted design enables secure installation within machinery and control assemblies.
- Faston 250 quick-connect terminals simplify compatible wiring and maintenance.
- Reinforced insulation between coil and contacts provides separation between control and load circuits.
- Wide ambient operating temperature range supports demanding industrial environments, subject to applicable certification conditions.
Key Features
- Finder Series 66.82 electromagnetic power relay.
- 24 V DC nominal operating coil.
- Two normally open contacts (2 NO / DPST-NO).
- 30 A nominal contact current.
- 120 A maximum peak contact current for 5 ms.
- 250 V AC nominal switching voltage.
- 440 V AC maximum switching voltage.
- 7,500 VA rated AC-1 resistive switching load.
- 1.7 W nominal DC coil consumption.
- Silver tin oxide (AgSnO₂) contact material.
- ATEX Ex ec nC special-version designation.
- HazLoc Class I, Division 2 special-version designation.
- Flange mounting with Faston 250 connections.
- Reinforced coil-to-contact insulation.
- 6 kV coil-to-contact impulse withstand voltage.
- 10 million mechanical operating cycles under specified conditions.
Reliable High-Current Switching for Industrial and Hazardous-Location Equipment
The Finder 66.82.9.024.4303 operates through an electromagnetic mechanism controlled by its 24 V DC coil. When the coil is energised, the relay closes both normally open contacts, allowing the connected electrical circuits to operate. When the coil supply is removed, the contacts return to their open positions, disconnecting the switched loads.
The relay's silver tin oxide (AgSnO₂) contacts are designed for industrial power switching, providing resistance to electrical wear under suitable operating conditions. Its 30 A nominal contact rating and specified short-duration peak current capability make it suitable for appropriately rated electrical loads. The flange-mounted construction and Faston 250 terminals facilitate integration into machinery, electrical control panels and OEM equipment.
The ATEX / HazLoc configuration is intended for equipment designed to meet the applicable hazardous-location requirements. Installation must account for the relevant explosion-protection classification, permitted ambient temperature, electrical loading, enclosure protection, terminal connections and applicable certification conditions. The relay's hazardous-location designation does not permit unrestricted use of the bare component in potentially explosive atmospheres.
Typical Applications
- Industrial machinery and automated manufacturing equipment.
- Electrical load switching and power control systems.
- Industrial heating and temperature regulation equipment.
- Heating, ventilation and air conditioning (HVAC) systems.
- OEM machinery using 24 V DC control circuits.
- Industrial process control and automation equipment.
- Power management and auxiliary switching assemblies.
- Electrical equipment designed for applicable ATEX Zone 2 environments.
- Control equipment designed for applicable Class I, Division 2 hazardous locations.
- Industrial assemblies requiring two-pole normally open power switching.
Technical Specifications
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| Device Type | Power Relay | |
|---|---|---|
| Terminal Type | Faston / flat-pin | |
| Mounting Type | Panel | |
| Manufacturer | Finder | |
| Series | 66 Series Power Relays | |
| Model | 66.82.9.024.4303 | |
| Relay type | 66.82 | |
| Product type | Electromagnetic power relay | |
| Contact configuration | 2 NO / DPST-NO | |
| Number of poles | 2 | |
| Contact arrangement | Normally open | |
| Contact material | Silver tin oxide (AgSnO₂) | |
| Nominal coil voltage | 24 V DC | |
| Coil supply type | Direct current (DC) | |
| Nominal coil consumption | 1.7 W | |
| Nominal coil current | Approximately 70.5 mA | |
| Coil resistance | 340 Ω | |
| DC coil operating range | 19.2–26.4 V DC | |
| Nominal contact current | 30 A | |
| Maximum peak contact current | 120 A for 5 ms | |
| Nominal switching voltage | 250 V AC | |
| Maximum AC switching voltage | 440 V AC | |
| Rated AC-1 resistive 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 | |
| Mechanical endurance | 10,000,000 cycles | |
| Electrical endurance | 100,000 cycles under specified rated-load conditions | |
| Typical operate time | 8 ms | |
| Coil-to-contact insulation | Reinforced | |
| Coil-to-contact impulse withstand voltage | 6 kV | |
| Coil-to-contact creepage and clearance | 8 mm | |
| Dielectric strength between open contacts | 1,500 V AC | |
| General ambient operating temperature | −40 to +70 °C | |
| Mounting type | Flange / panel mounting | |
| Terminal type | Faston 250 quick-connect terminals | |
| Terminal dimensions | 6.3 × 0.8 mm | |
| Overall dimensions | 68.5 × 33.5 × 31 mm | |
| Special version | ATEX / HazLoc | |
| ATEX protection designation | Ex ec nC | |
| HazLoc classification | Class I, Division 2, Groups A, B, C and D, subject to applicable temperature classification and installation conditions | |
| Applicable relay standard | EN 61810-1 |
Frequently Asked Questions
What is the Finder 66.82.9.024.4303 used for?
The Finder 66.82.9.024.4303 is an electromagnetic power relay designed for electrical load switching in industrial machinery, automation systems and electrical control equipment. It is an ATEX / HazLoc special version intended for integration into appropriately designed hazardous-location equipment.
What is the coil voltage of the Finder 66.82.9.024.4303?
The relay features a 24 V DC nominal operating coil with a standard operating voltage range of 19.2–26.4 V DC and nominal coil consumption of 1.7 W.
What does 2 NO or DPST-NO mean?
2 NO means two normally open contacts, while DPST-NO means Double Pole Single Throw – Normally Open. The relay contains two independent contact circuits that close simultaneously when its coil is energised.
What is the contact current rating of this relay?
The Finder 66.82.9.024.4303 has a 30 A nominal contact rating. Its AgSnO₂ contacts also have a specified 120 A maximum peak current for 5 ms. The permissible continuous and switching currents depend on the electrical load and operating conditions.
What contact material is used in the Finder 66.82.9.024.4303?
The relay uses silver tin oxide (AgSnO₂) contacts, a cadmium-free contact material designed for demanding industrial power switching applications.
What does the 4303 configuration code indicate?
The final 4303 code identifies AgSnO₂ contact material, a normally open contact arrangement and the ATEX / HazLoc special version within the Finder Series 66 ordering system.
Is the Finder 66.82.9.024.4303 suitable for hazardous locations?
The relay is an ATEX / HazLoc special version designed for integration into equipment meeting the relevant hazardous-location requirements, including applicable Ex ec nC and Class I, Division 2 conditions. The complete equipment must satisfy the appropriate enclosure, wiring, temperature and certification requirements.
How is the Finder 66.82.9.024.4303 mounted?
The relay features flange mounting and Faston 250 quick-connect terminals measuring 6.3 × 0.8 mm. It must be installed using compatible connections and an enclosure appropriate for the intended operating environment.
Can the Finder 66.82.9.024.4303 be controlled by a PLC?
Yes. The relay can be operated through a suitably rated PLC output or interposing driver capable of supplying its 24 V DC coil. The output must accommodate the nominal coil current of approximately 70.5 mA, and appropriate coil suppression should be considered.
What is the difference between Finder 66.82.9.024.4303 and 66.82.9.024.4300?
Both relays belong to the Finder Series 66.82 family and feature a 24 V DC coil, two normally open contacts and AgSnO₂ contact material. The 4303 version is designated for ATEX / HazLoc applications, whereas the 4300 version is the standard configuration. The appropriate variant should be selected according to the required approvals and installation conditions.
Trusted by Industrial Automation and Electrical Equipment Manufacturers
Finder Series 66 power relays provide robust electromagnetic switching solutions for industrial machinery, electrical control equipment and power management systems. Their high-current contact designs, reinforced insulation, practical mounting arrangements and specialised hazardous-location variants make them a dependable choice for engineers and OEM manufacturers developing industrial electrical assemblies.
