65.31.8.120.0309 Finder Power relay 1NO1 NC 20A 120V

Why Choose the Finder 65.31.8.120.0309 Power Relay?

The Finder 65.31.8.120.0309 is an industrial electromagnetic power relay from the Finder 65 Series, featuring a 120 V AC operating coil and a high-current contact arrangement designed for industrial electrical control and power switching applications. The 65.31 relay family is suited to machinery, control panels and equipment requiring dependable electromechanical switching.

The Finder 65.31-0300 family features a single normally open contact (SPST-NO / 1 NO) with a 30 A rated contact current and an open contact gap of at least 3 mm. This provides a practical switching arrangement for applications requiring one circuit to close when the relay coil is energised.

Designed for rear flange mounting, the relay family incorporates Faston 250 quick-connect terminals measuring 6.3 × 0.8 mm. The exact .0309 variant should be checked against the original equipment specification when selecting a replacement, particularly where contact material or application-specific construction is important.

Key Advantages

• 120 V AC operating coil for compatible industrial control supplies.
• 30 A rated normally open contact in the 65.31-0300 relay configuration.
• Single-pole switching provides straightforward control of an electrical load.
• Minimum 3 mm open contact gap offers defined contact separation when de-energised.
• Faston 250 terminals enable convenient quick-connect electrical wiring.
• Rear flange mounting supports secure installation within machinery and control equipment.
• Electromagnetic, non-latching operation returns the contact to its normal position when coil power is removed.
• 250 V AC rated contact voltage supports appropriately rated industrial loads.
• High-current relay design suits auxiliary power switching and equipment control.
• Part of the established Finder 65 Series industrial power relay family.

Key Features

• Finder 65 Series electromagnetic power relay.
• 65.31 relay construction.
• 120 V AC nominal coil voltage.
• 50/60 Hz AC coil operation.
• Single normally open contact arrangement.
• SPST-NO / 1 Form A contact configuration.
• 30 A rated contact current for the 65.31-0300 configuration.
• 50 A maximum peak contact current for the 65.31-0300 configuration.
• Minimum 3 mm open contact gap.
• 250 V AC rated contact voltage.
• 400 V AC maximum switching voltage under specified conditions.
• 7500 VA rated resistive AC switching capacity.
• Rear flange mounting arrangement.
• Faston 250 quick-connect terminals.
• Electromagnetic monostable operating mechanism.

High-Current Normally Open Switching for Industrial Control

The Finder 65.31.8.120.0309 belongs to a relay family that uses an electromagnetic coil to operate a normally open power contact. When the 120 V AC coil is energised, the relay closes its contact, allowing current to flow through the connected load circuit. When the coil supply is removed, the contact returns to its open position.

The 65.31-0300 contact arrangement provides a minimum open contact gap of 3 mm, together with a high-current switching design. This contact separation is a useful construction feature but does not, on its own, establish suitability for safety isolation or emergency-stop functions.

The relay's rear flange mounting and Faston 250 terminals allow installation in suitable industrial electrical equipment. For replacement applications, the complete part number, contact arrangement, coil voltage, mounting details and electrical ratings must be checked against the original equipment requirements.

Typical Applications

• Industrial machinery and automation systems.
• Electrical control panels and equipment assemblies.
• 120 V AC control circuits.
• High-current auxiliary power switching.
• Industrial heating and equipment control.
• Machinery power and control interfaces.
• Electrical interlocking and equipment sequencing.
• Industrial process control equipment.
• Maintenance and repair of compatible relay installations.
• OEM electrical equipment and machinery assemblies.