Why Choose the Finder 65.31.9.048.4000 Power Relay?
The Finder 65.31.9.048.4000 is a heavy-duty 20 A industrial electromechanical power relay designed for reliable switching in machinery, automation equipment and electrical control panels. Part of the Finder 65 Series, this model combines a 48 V DC operating coil with one normally open and one normally closed contact (1 NO + 1 NC).
Featuring silver tin oxide (AgSnO₂) contacts, the Finder 65.31.9.048.4000 provides dependable switching performance for compatible industrial loads. Its 20 A rated contact current, 250 V AC rated contact voltage and 5,000 VA AC1 resistive switching capacity make it suitable for industrial heating equipment, machinery, electrical load control and automation systems.
The relay's two independently wired contacts provide complementary switching functions. When the 48 V DC coil is energised, the normally open contact closes while the normally closed contact opens. Its Faston 250 quick-connect terminals and rear flange mounting arrangement provide a practical installation solution for compatible industrial equipment.
Key Advantages
- 20 A rated contact current for demanding electrical switching applications.
- 48 V DC operating coil for compatible industrial DC control systems.
- 1 NO + 1 NC contact configuration for complementary switching functions.
- Silver tin oxide (AgSnO₂) contacts for dependable switching performance.
- 5,000 VA AC1 switching capacity for appropriately rated resistive loads.
- 1.3 W nominal coil consumption for efficient DC control operation.
- Faston 250 quick-connect terminals for convenient electrical connections.
- Rear flange mounting for secure installation on suitable panels and chassis.
- 30 million operations mechanical endurance under specified conditions.
- Non-latching operation returns both contacts to their normal states when coil power is removed.
- Wide operating temperature range for demanding industrial environments.
- Suitable for machinery, industrial automation, electrical control and equipment maintenance.
Key Features
- Finder 65 Series industrial power relay.
- 20 A rated contact current.
- 48 V DC nominal coil voltage.
- One normally open and one normally closed contact.
- Two separate single-throw contact circuits.
- 250 V AC rated contact voltage.
- 400 V AC maximum switching voltage.
- 5,000 VA rated resistive load (AC1).
- 1,000 VA rated AC15 load.
- Silver tin oxide (AgSnO₂) contact material.
- 1.3 W nominal DC coil consumption.
- Approximately 27.1 mA nominal coil current.
- Approximately 1.77 kΩ nominal coil resistance.
- Faston 250 terminals measuring 6.3 × 0.8 mm.
- Rear flange mounting arrangement.
- Six electrical terminals for the coil and two contact circuits.
- 30 million operations mechanical endurance.
- 80,000 operations electrical endurance at the specified rated load.
- RT I environmental protection category.
- Non-latching DC coil operation.
Reliable 20 A Switching for 48 V DC Industrial Control Systems
The Finder 65.31.9.048.4000 operates as an electrically controlled switching device. When its 48 V DC coil is energised, the normally open contact closes and the normally closed contact opens. When the coil supply is removed, both contacts return to their original positions.
This 1 NO + 1 NC configuration is particularly useful where one circuit must be activated while another is deactivated. Applications include auxiliary equipment control, electrical signalling, machinery control and complementary switching arrangements. Unlike a conventional changeover contact, the relay's normally open and normally closed contacts are independently wired and do not share a common terminal.
The relay's silver tin oxide contacts support repeated switching of compatible electrical loads. Its 20 A rated contact current and 5,000 VA AC1 resistive switching capacity make it suitable for appropriately rated industrial power circuits. The permissible current must always be assessed against the actual load type, voltage and switching conditions.
For installation, the rear flange mounting arrangement provides secure attachment to a suitable chassis or panel, while the Faston 250 terminals allow convenient electrical connections using compatible receptacles. Its 48 V DC coil is particularly relevant to industrial control systems using this nominal DC supply voltage.
Typical Applications
- Industrial automation and electrical control panels.
- 48 V DC control circuits.
- Industrial machinery and manufacturing equipment.
- Electrical load switching and auxiliary equipment control.
- Complementary normally open and normally closed switching circuits.
- Industrial heating and temperature control equipment.
- Commercial and industrial lighting control.
- Electrical signalling and equipment status circuits.
- Conveyor systems and material handling equipment.
- Industrial process control systems.
- Ventilation and HVAC equipment control.
- Electrical power management and distribution equipment.
- Maintenance and replacement of compatible industrial relays.
- Applications requiring a 48 V DC coil and 20 A 1 NO + 1 NC contacts.
