Why Choose the Finder 65.31.9.220.4300 Power Relay?
The Finder 65.31.9.220.4300 is a heavy-duty 30 A industrial electromechanical power relay designed for high-current electrical switching in industrial automation, machinery and control systems. Part of the Finder 65 Series, this model features a 220 V DC nominal coil and a single normally open contact (SPST-NO / 1 Form A).
The 65.31-4300 configuration provides a 30 A rated contact current, 250 V AC rated contact voltage and 7,500 VA AC1 resistive switching capacity. Its silver tin oxide (AgSnO₂) contacts are designed for repeated switching of compatible industrial electrical loads.
With a minimum 3 mm open-contact gap, Faston 250 quick-connect terminals and a rear flange mounting arrangement, the Finder 65.31.9.220.4300 offers a practical solution for industrial equipment requiring a high-current normally open switching function controlled by a nominal 220 V DC supply.
Specification note: The contact and construction characteristics below relate to the Finder 65.31-4300 relay configuration. The exact coil resistance, operating voltage limits and availability of the 220 V DC version should be verified against Finder's current part-specific documentation before ordering or installation.
Key Advantages
- 30 A rated contact current for demanding industrial electrical switching.
- 220 V DC nominal coil for compatible high-voltage DC control systems.
- Single normally open contact (SPST-NO) for straightforward load control.
- Minimum 3 mm open-contact gap for increased physical contact separation.
- Silver tin oxide (AgSnO₂) contacts for robust industrial switching.
- 7,500 VA AC1 resistive switching capacity for appropriately rated loads.
- Faston 250 quick-connect terminals for convenient electrical connections.
- Rear flange mounting for secure installation on compatible panels and chassis.
- Non-latching operation returns the contact to its open state when coil power is removed.
- High-current switching capability for industrial machinery and electrical equipment.
- Separate control and load circuits for electrically operated switching.
- Suitable for industrial automation, heating equipment and electrical power control applications.
Key Features
- Finder 65 Series industrial power relay.
- 30 A rated contact current.
- 220 V DC nominal coil voltage.
- One normally open contact (1 NO).
- SPST-NO / 1 Form A contact configuration.
- 250 V AC rated contact voltage.
- 400 V AC maximum switching voltage, subject to applicable conditions.
- 7,500 VA AC1 resistive load rating.
- 1,250 VA AC15 switching capacity at 230 V AC.
- Silver tin oxide (AgSnO₂) contact material.
- Minimum 3 mm open-contact gap.
- Faston 250 terminals measuring 6.3 × 0.8 mm.
- Rear flange mounting arrangement.
- Four electrical terminals for the coil and normally open contact.
- Monostable, non-latching operation.
- Industrial-grade electromechanical construction.
Reliable 30 A Switching for 220 V DC Industrial Control Systems
The Finder 65.31.9.220.4300 operates as an electrically controlled power switch. When its 220 V DC coil is energised within the specified operating range, the normally open contact closes and allows current to flow through the connected load circuit. When coil power is removed, the contact returns to its normally open position.
The single normally open contact is particularly useful where a control signal must activate one high-current electrical load. Its 30 A contact rating and 7,500 VA AC1 resistive switching capacity make the 65.31-4300 configuration suitable for appropriately rated industrial heating equipment, electrical power circuits and machinery.
The silver tin oxide contact material supports repeated switching of compatible electrical loads. Its minimum 3 mm open-contact gap provides increased physical separation between the contacts when the relay is de-energised. However, the complete installation must still comply with the applicable electrical safety and isolation requirements.
The relay's 220 V DC nominal coil makes it relevant to industrial equipment designed around high-voltage DC control supplies. The coil voltage determines the supply required to operate the relay; it does not determine the permissible voltage or current that the contacts can switch.
For installation, the Faston 250 quick-connect terminals allow connections using compatible receptacles, while the rear flange mounting arrangement provides a practical method of securing the relay to suitable panels or chassis.
Installation and Electrical Compatibility
The Finder 65.31.9.220.4300 is intended for installation in compatible industrial electrical equipment. Its rear flange mounting arrangement supports secure panel or chassis installation, while Faston 250 terminals provide connections for the coil and switching circuit.
Before installation, confirm that the control supply matches the relay's 220 V DC nominal coil and falls within the manufacturer's permitted operating voltage range. High-voltage DC circuits require appropriate isolation, protection and safe working procedures.
Verify the connected load's operating voltage, steady-state current, inrush current and switching characteristics against the relay's published ratings. Particular care is required for motors, inductive loads and high-voltage DC circuits, where permissible switching currents may be significantly lower than the nominal AC resistive contact rating.
Typical Applications
- Industrial automation and electrical control panels.
- Equipment using nominal 220 V DC control supplies.
- High-current resistive load switching.
- Industrial heating and temperature control equipment.
- Industrial machinery and manufacturing systems.
- Electrical power management equipment.
- Power generation and distribution auxiliary control systems.
- Commercial and industrial lighting control.
- Industrial process control systems.
- Ventilation and HVAC equipment control.
- Conveyor systems and material handling equipment.
- Building automation and electrical installations.
- Electrical equipment maintenance and relay replacement.
- Applications requiring a 220 V DC coil and 30 A normally open contact.
