66.82.8.120.0003 Finder Power relay 2pole 30A 120/125V

Why Choose the Finder 66.82.8.120.0003 Power Relay?

The Finder 66.82.8.120.0003 is a high-current electromagnetic power relay from the Finder 66 Series, designed for industrial electrical control, automation and power switching applications. Featuring a 120 V AC operating coil and two changeover contacts (DPDT / 2 CO), it provides flexible control of two independent electrical circuits from a single control signal.

The relay features 30 A normally open (NO) contacts and 10 A normally closed (NC) contacts, making it suitable for applications requiring both high-current switching and changeover functionality. Its silver cadmium oxide (AgCdO) contacts are designed for industrial power switching duties.

The 66.82.8.120.0003 is identified as a Class I, Division 2 / ATEX relay variant and features top flange mounting with Faston 250 quick-connect terminals. These characteristics make it relevant to industrial equipment installations where the applicable electrical and hazardous-location requirements can be satisfied.

This exact model is listed as obsolete by DigiKey. It remains relevant for maintenance and replacement applications, although current stock availability and any proposed substitute should be checked before ordering.

Key Advantages

• 120 V AC operating coil for compatible industrial AC control circuits.
• Two changeover contacts provide normally open and normally closed switching functions.
• 30 A normally open contact rating supports appropriately rated high-current loads.
• 10 A normally closed contact rating provides additional control flexibility.
• Silver cadmium oxide contacts support industrial power switching applications.
• Class I, Division 2 / ATEX variant for installations requiring the corresponding certification.
• Faston 250 quick-connect terminals simplify electrical connections.
• Top flange mounting supports secure installation in machinery and electrical assemblies.
• Non-latching electromagnetic operation automatically restores the contacts when the coil is de-energised.
• −40 to +70 °C operating temperature range supports demanding industrial environments.

Key Features

• Finder 66 Series industrial power relay.
• 66.82 flange-mounted relay configuration.
• 120 V AC nominal coil voltage.
• Two changeover contacts (2 CO).
• DPDT / 2 Form C contact arrangement.
• 30 A normally open contact rating.
• 10 A normally closed contact rating.
• 250 V AC rated contact voltage.
• 440 V AC maximum switching voltage.
• AgCdO contact material.
• Class I, Division 2 / ATEX variant designation.
• Faston 250 quick-connect terminals.
• Top flange / chassis mounting.
• Non-latching electromagnetic operating mechanism.
• 8 ms operate time and 15 ms release time.

High-Current Changeover Switching for Industrial Control Systems

The Finder 66.82.8.120.0003 uses an electromagnetic coil to operate two independent changeover contact sets. When the 120 V AC coil is energised, each contact transfers from its normally closed position to its normally open position. When the coil supply is removed, the return mechanism restores the contacts to their normal positions.

This DPDT configuration allows two circuits to be switched simultaneously while providing both normally open and normally closed outputs. The 30 A NO rating and 10 A NC rating must be considered separately when designing or replacing the relay in an electrical system.

The relay's top flange mounting and Faston 250 terminals provide a practical installation arrangement for compatible industrial equipment. Its AgCdO contacts and non-latching construction support applications requiring repeatable electromechanical switching.

For installations in classified hazardous locations, the .0003 variant's applicable ATEX and Class I, Division 2 markings must be checked against the complete equipment certification and installation conditions. A hazardous-location designation alone does not establish suitability for every explosive atmosphere or installation method.

Typical Applications

• Industrial automation and machinery control systems.
• Electrical control panels and power switching assemblies.
• 120 V AC control circuits.
• High-current normally open load switching.
• Changeover switching and auxiliary control functions.
• Industrial process control equipment.
• Machinery and equipment interlocking.
• Industrial heating and load control.
• Equipment requiring suitably certified hazardous-location components.
• Maintenance and replacement of compatible legacy Finder 66 Series installations.