65.31.9.024.4009 Finder Power relay 1NO 30A DC 24VNO
Finder 65.31.9.024.4009 is a 20 A industrial electromechanical power relay with a 24 V DC coil, one normally open and one normally closed contact, silver tin oxide contact material, Faston 250 terminals and rear flange mounting for industrial automation and electrical control applications.
Why Choose the Finder 65.31.9.024.4009 Power Relay?
The Finder 65.31.9.024.4009 is a robust 20 A industrial electromechanical power relay designed for dependable switching in industrial automation, machinery and electrical control systems. Part of the established Finder 65 Series, this relay features a 24 V DC operating coil and a versatile 1 normally open + 1 normally closed (1 NO + 1 NC) contact configuration.
Its two independently wired contacts provide complementary switching functions. When the coil is energised, the normally open contact closes while the normally closed contact opens. The relay uses silver tin oxide (AgSnO₂) contacts and offers a 20 A rated contact current, making it suitable for appropriately rated industrial electrical loads.
With a 250 V AC rated contact voltage, 5,000 VA AC1 resistive switching capacity and Faston 250 quick-connect terminals, the Finder 65.31.9.024.4009 provides a practical solution for industrial control panels, equipment switching and maintenance applications requiring a 24 V DC coil.
Key Advantages
20 A rated contact current for industrial load-switching applications.
24 V DC operating coil for compatible low-voltage DC control circuits.
1 NO + 1 NC contact configuration for complementary switching functions.
Silver tin oxide (AgSnO₂) contacts for dependable electrical switching.
5,000 VA AC1 switching capacity for suitable resistive loads.
1.3 W nominal coil consumption for efficient DC operation.
Faston 250 quick-connect terminals for convenient wiring.
Rear flange mounting for secure installation in compatible equipment.
30 million operations mechanical endurance under specified conditions.
Non-latching operation returns the contacts to their normal positions when coil power is removed.
Wide operating temperature range suitable for demanding industrial environments.
Suitable for automation, auxiliary control, machinery and electrical equipment maintenance.
Key Features
Finder 65 Series industrial power relay.
20 A rated contact current.
24 V DC nominal coil voltage.
One normally open and one normally closed contact.
Two independently wired single-throw contact circuits.
250 V AC rated contact voltage.
400 V AC maximum switching voltage.
Silver tin oxide (AgSnO₂) contact material.
1.3 W nominal DC coil consumption.
54 mA nominal coil current.
445 Ω nominal coil resistance.
Faston 250 terminals measuring 6.3 × 0.8 mm.
Rear flange mounting arrangement.
Six electrical terminals for the coil and two separate contact circuits.
RT I environmental protection category.
−40 to +75 °C operating temperature range.
Non-latching DC coil operation.
Reliable 20 A Switching for 24 V DC Industrial Control Systems
The Finder 65.31.9.024.4009 operates as an electrically controlled switch. When its 24 V DC coil is energised, the normally open contact closes and the normally closed contact opens. When coil power is removed, both contacts return to their normal states. This arrangement enables one control signal to operate two electrical circuits with opposite switching functions.
The 1 NO + 1 NC configuration is useful where one circuit must be energised while another is disconnected. Applications include auxiliary equipment control, signalling, change-of-state indication and complementary switching arrangements. Unlike a conventional changeover contact, the two contacts are independently wired and do not share a common terminal.
The relay's silver tin oxide contacts support repeated switching of compatible industrial loads. Its 20 A contact rating and 5,000 VA AC1 resistive load capacity make it suitable for electrical equipment requiring higher-current switching, provided that the connected load remains within the manufacturer's applicable ratings.
For installation, the Faston 250 quick-connect terminals allow convenient connection using compatible receptacles, while the rear flange mounting arrangement provides secure attachment to a suitable chassis or panel. The 24 V DC coil makes this model particularly useful in industrial control systems using a nominal 24 V DC supply.
Typical Applications
Industrial automation and electrical control panels.
24 V DC control systems and auxiliary switching circuits.
Industrial machinery and manufacturing equipment.
Electrical load switching and equipment control.
Complementary normally open and normally closed switching.
Industrial heating and temperature control systems.
Lighting control and building automation.
Electrical signalling and equipment status circuits.
Conveyor systems and material handling equipment.
Industrial process control systems.
HVAC and ventilation equipment control.
Electrical power management and distribution equipment.
Maintenance and replacement of compatible industrial relays.
Applications requiring a 24 V DC coil and 20 A 1 NO + 1 NC contacts.
Technical Specifications
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Terminal Type
Faston / flat-pin
Switching Current (A)
20 A
Load Voltage
400 V AC
Mounting Type
Panel
Manufacturer
Finder
Series
65 Series Power Relays
Model
65.31.9.024.4009
Product type
Industrial electromechanical power relay
EAN
4099891588694
Contact configuration
1 NO + 1 NC
Normally open contacts
1
Normally closed contacts
1
Contact arrangement
Two separate single-throw contacts
Rated contact current
20 A
Rated contact voltage
250 V AC
Maximum switching voltage
400 V AC
Rated resistive switching load (AC1)
5,000 VA
Resistive DC contact rating
20 A at 24 V DC
Nominal coil voltage
24 V DC
Coil type
DC, non-latching
Nominal coil consumption
1.3 W
Nominal coil current
Approximately 54 mA
Nominal coil resistance
445 Ω
Coil operating voltage range
20.4 to 26.4 V DC at 20 °C
Contact material
Silver tin oxide (AgSnO₂)
Mounting type
Chassis / panel mounting
Mounting arrangement
Rear flange
Terminal type
Faston 250 quick-connect
Terminal dimensions
6.3 × 0.8 mm
Number of electrical terminals
6
Dimensions
36.5 × 32.2 × 42.2 mm (relay body; mounting arrangement may affect installed dimensions)
Operating temperature
−40 to +75 °C
Mechanical endurance
30 million operations
Electrical endurance
80,000 operations under specified rated-load conditions
Operating time
Approximately 10 ms
Environmental protection category
RT I
Application
Industrial automation, electrical control and load switching
Frequently Asked Questions
What is the Finder 65.31.9.024.4009 used for?
The Finder 65.31.9.024.4009 is a 20 A industrial power relay used to switch electrical loads in automation systems, machinery and electrical control panels. It operates one normally open and one normally closed contact using a 24 V DC coil.
What is the coil voltage of the Finder 65.31.9.024.4009?
The relay has a 24 V DC nominal coil voltage. Its nominal coil consumption is 1.3 W, with a nominal coil current of approximately 54 mA and a coil resistance of 445 Ω.
What is the operating voltage range of the 24 V DC coil?
The specified operating range is 20.4 to 26.4 V DC at a reference temperature of 20 °C. Actual operating limits can depend on ambient temperature and installation conditions.
What is the contact rating of this relay?
The Finder 65.31.9.024.4009 has a 20 A rated contact current and a 250 V AC rated contact voltage, with a rated resistive switching capacity of 5,000 VA. Permissible loads depend on the applicable switching category and operating conditions.
How many contacts does the Finder 65.31.9.024.4009 have?
The relay has two separate contacts: one normally open (NO) and one normally closed (NC). When the coil is energised, the NO contact closes while the NC contact opens. Both return to their normal states when coil power is removed.
Is the Finder 65.31.9.024.4009 a changeover relay?
No. The relay uses two independently wired single-throw contacts, one normally open and one normally closed. A conventional changeover contact shares a common terminal between its normally open and normally closed paths, whereas this relay has separate contact circuits.
How is the Finder 65.31.9.024.4009 mounted?
The relay is designed for chassis or panel mounting using a rear flange. Electrical connections are made through Faston 250 quick-connect terminals measuring 6.3 × 0.8 mm.
What contact material is used in this relay?
The Finder 65.31.9.024.4009 uses silver tin oxide (AgSnO₂) contacts. This cadmium-free contact material provides dependable switching performance for compatible industrial electrical loads.
What is the expected service life of the Finder 65.31.9.024.4009?
The relay has a mechanical endurance of 30 million operations and an electrical endurance of 80,000 operations under specified rated-load conditions. Actual service life depends on the load, switching frequency and environmental conditions.
What is the difference between the Finder 65.31.9.024.4009 and 65.31.9.024.4309?
The principal difference is the contact arrangement and current rating. The 65.31.9.024.4009 has one normally open and one normally closed contact rated at 20 A, while the 65.31.9.024.4309 has one normally open contact rated at 30 A. Both use a 24 V DC coil, but their switching functions and contact ratings are different.
Can the Finder 65.31.9.024.4009 switch DC loads?
Yes. The relay can switch compatible DC loads and has a 20 A resistive contact rating at 24 V DC. However, its maximum permissible switching current depends on the DC voltage and load characteristics. The manufacturer's DC breaking-capacity information should be checked for higher-voltage or inductive DC loads.
Trusted by Industrial Automation Professionals Worldwide
Finder 65 Series power relays are designed for industrial automation, machinery and electrical control applications. The Finder 65.31.9.024.4009 combines a 20 A contact rating, 24 V DC operating coil, one normally open and one normally closed contact, silver tin oxide contact material and Faston 250 terminals to provide a versatile switching solution for compatible industrial equipment.
Terminal Type
Faston / flat-pin
Switching Current (A)
20 A
Load Voltage
400 V AC
Mounting Type
Panel
Manufacturer
Finder
Series
65 Series Power Relays
Model
65.31.9.024.4009
Product type
Industrial electromechanical power relay
EAN
4099891588694
Contact configuration
1 NO + 1 NC
Normally open contacts
1
Normally closed contacts
1
Contact arrangement
Two separate single-throw contacts
Rated contact current
20 A
Rated contact voltage
250 V AC
Maximum switching voltage
400 V AC
Rated resistive switching load (AC1)
5,000 VA
Resistive DC contact rating
20 A at 24 V DC
Nominal coil voltage
24 V DC
Coil type
DC, non-latching
Nominal coil consumption
1.3 W
Nominal coil current
Approximately 54 mA
Nominal coil resistance
445 Ω
Coil operating voltage range
20.4 to 26.4 V DC at 20 °C
Contact material
Silver tin oxide (AgSnO₂)
Mounting type
Chassis / panel mounting
Mounting arrangement
Rear flange
Terminal type
Faston 250 quick-connect
Terminal dimensions
6.3 × 0.8 mm
Number of electrical terminals
6
Dimensions
36.5 × 32.2 × 42.2 mm (relay body; mounting arrangement may affect installed dimensions)
Operating temperature
−40 to +75 °C
Mechanical endurance
30 million operations
Electrical endurance
80,000 operations under specified rated-load conditions
Operating time
Approximately 10 ms
Environmental protection category
RT I
Application
Industrial automation, electrical control and load switching
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