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65.31.9.024.4309 Finder Power relay 1NO 30A DC 24VNO
Finder 65.31.9.024.4309 is a 30 A industrial electromechanical power relay with a 24 V DC coil, one normally open contact, silver tin oxide contact material, a minimum 3 mm contact gap and Faston 250 terminals for industrial automation and high-current electrical load switching.
Why Choose the Finder 65.31.9.024.4309 Power Relay?
The Finder 65.31.9.024.4309 is a high-performance 30 A industrial electromechanical power relay designed for dependable switching of high-current electrical loads. Part of the established Finder 65 Series, this relay combines a 24 V DC operating coil with a single normally open contact (SPST-NO / 1 Form A), making it an excellent choice for industrial automation, machinery and electrical control applications.
Featuring silver tin oxide (AgSnO₂) contact material, the Finder 65.31.9.024.4309 delivers reliable switching performance for compatible industrial loads. Its 30 A rated contact current, 250 V AC rated contact voltage and 7,500 VA AC1 resistive switching capacity make it suitable for controlling heating equipment, electrical machinery, power circuits and industrial automation systems.
A key feature of this model is its minimum 3 mm open-contact gap, providing increased physical separation between the contacts when the relay is de-energised. The relay also features Faston 250 quick-connect terminals and a compact industrial design, allowing installation using compatible mounting accessories and electrical connectors.
Key Advantages
- 30 A rated contact current for demanding industrial load-switching applications.
- 24 V DC operating coil for compatible low-voltage DC control circuits.
- Single normally open contact (SPST-NO / 1 Form A) for straightforward high-current switching.
- Minimum 3 mm open-contact gap for increased electrical contact separation.
- Silver tin oxide (AgSnO₂) contacts for dependable industrial switching performance.
- 7,500 VA AC1 switching capacity for suitable resistive loads.
- 30 A resistive DC switching rating at 24 V DC.
- 1.3 W nominal coil consumption for efficient DC operation.
- Faston 250 quick-connect terminals for convenient electrical connections.
- 30 million operations mechanical endurance under specified conditions.
- Non-latching operation automatically opens the contact when coil power is removed.
- Suitable for industrial automation, machinery, electrical control and equipment maintenance.
Key Features
- Finder 65 Series industrial power relay.
- 30 A rated contact current.
- 24 V DC nominal coil voltage.
- Single normally open contact (SPST-NO).
- 250 V AC rated contact voltage.
- 400 V AC maximum switching voltage.
- 7,500 VA rated resistive load (AC1).
- Silver tin oxide (AgSnO₂) contact material.
- Minimum 3 mm contact gap.
- Faston 250 terminals measuring 6.3 × 0.8 mm.
- 1.3 W nominal DC coil consumption.
- 54 mA nominal coil current.
- 445 Ω nominal coil resistance.
- Four electrical terminals for the coil and normally open contact.
- Approximately 15 ms operating time.
- 30 million operations mechanical endurance.
- RT I environmental protection category.
- Non-polarised DC coil for convenient connection.
- Monostable electromechanical operation.
Reliable 30 A Switching for 24 V DC Industrial Control Systems
The Finder 65.31.9.024.4309 operates as an electrically controlled power switch. When its 24 V DC coil is energised, the relay closes its normally open contact, allowing current to flow through the connected load circuit. When the coil supply is removed, the contact returns to its open position, interrupting the electrical connection.
Unlike the Finder 65 Series variants with one normally open and one normally closed contact, the 65.31.9.024.4309 is designed around a single 30 A normally open contact. This makes it particularly suitable for applications requiring one substantial electrical load to be switched by a low-voltage DC control signal.
The relay's silver tin oxide contacts support repeated operation within the manufacturer's specified ratings. Its minimum 3 mm open-contact gap provides increased physical separation when the relay is de-energised, although the relay should not be treated as a substitute for a dedicated safety isolation device unless the complete installation meets the applicable standards.
With Faston 250 quick-connect terminals, the relay can be wired using compatible 6.3 × 0.8 mm receptacles. This configuration is supplied without an integrated fixing flange; a suitable mounting clip or flange should be selected separately where required. Its 24 V DC coil is particularly useful in industrial control systems employing low-voltage DC power supplies.
Typical Applications
- Industrial automation and electrical control panels.
- High-current electrical load switching.
- 24 V DC control systems.
- Industrial heating elements and resistive heaters.
- Commercial and industrial lighting control.
- Industrial machinery and manufacturing equipment.
- Electrical power management and distribution equipment.
- Building automation and electrical installations.
- Industrial process control systems.
- Ventilation and HVAC equipment control.
- Conveyor systems and material handling equipment.
- Electrical equipment maintenance and relay replacement.
- Applications requiring a 24 V DC coil and 30 A normally open contact.
Technical Specifications
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| Device Type | Power Relay | |
|---|---|---|
| Terminal Type | Faston / flat-pin | |
| Switching Current (A) | 30 A | |
| Load Voltage | 400 V AC | |
| Mounting Type | Panel | |
| Manufacturer | Finder | |
| Series | 65 Series Power Relays | |
| Model | 65.31.9.024.4309 | |
| Manufacturer article number | 653190244309 | |
| EAN | 8012823334271 | |
| Product type | Industrial electromechanical power relay | |
| Contact configuration | SPST-NO / 1 Form A | |
| Number of poles | 1 | |
| Number of normally open contacts | 1 | |
| Rated contact current | 30 A | |
| Maximum peak contact current | 120 A under specified short-duration conditions | |
| Rated contact voltage | 250 V AC | |
| Maximum switching voltage | 400 V AC | |
| Maximum DC switching voltage | 220 V DC, subject to breaking-capacity limits | |
| Rated resistive load (AC1) | 7,500 VA | |
| Resistive DC contact rating | 30 A at 24 V DC | |
| Nominal coil voltage | 24 V DC | |
| Coil type | DC, non-latching | |
| Coil polarity | Non-polarised | |
| Nominal coil consumption | 1.3 W | |
| Nominal coil current | Approximately 54 mA | |
| Nominal coil resistance | 445 Ω | |
| DC coil operating voltage range | 20.4 to 26.4 V DC under specified reference conditions | |
| Contact material | Silver tin oxide (AgSnO₂) | |
| Open-contact gap | At least 3 mm | |
| Mounting | Compatible panel or chassis installation using a suitable mounting accessory | |
| Fixing flange | Not included with this configuration | |
| Terminal type | Faston 250 quick-connect | |
| Terminal dimensions | 6.3 × 0.8 mm | |
| Number of electrical terminals | 4 | |
| Relay body dimensions | Approximately 36.5 × 32.2 × 42.2 mm | |
| Operating temperature | −40 to +75 °C | |
| Mechanical endurance | 30 million operations | |
| Electrical endurance | 30,000 operations under specified rated-load conditions | |
| Operating time | Approximately 15 ms | |
| Environmental protection category | RT I | |
| LED indicator | Not included | |
| Application | Industrial automation, high-current switching and electrical control systems |
Frequently Asked Questions
What is the Finder 65.31.9.024.4309 used for?
The Finder 65.31.9.024.4309 is a 30 A industrial electromechanical power relay used for switching electrical loads in machinery, automation systems and electrical control panels. It operates a single normally open contact using a 24 V DC coil.
What is the coil voltage of the Finder 65.31.9.024.4309?
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 resistance of 445 Ω.
What is the operating voltage range of the 24 V DC coil?
The relay has a specified coil operating voltage range of approximately 20.4 to 26.4 V DC under reference conditions. Actual operating limits can depend on ambient temperature and installation conditions.
What is the contact rating of this relay?
The Finder 65.31.9.024.4309 has a 30 A rated contact current at 250 V AC, with a rated resistive switching capacity of 7,500 VA. It also supports 30 A resistive switching at 24 V DC. Permissible loads depend on the applicable switching category and operating conditions.
How many contacts does the Finder 65.31.9.024.4309 have?
The relay has one normally open contact (SPST-NO / 1 Form A). The contact closes when the coil is energised and opens when the coil is de-energised. It does not provide a normally closed or changeover contact.
What is the benefit of the 3 mm contact gap?
The relay features a minimum 3 mm gap between its open contacts. This provides increased physical separation when the relay is de-energised and supports applications requiring this contact-gap characteristic. The complete installation must still comply with applicable electrical safety standards.
How is the Finder 65.31.9.024.4309 mounted?
The relay can be installed using a compatible panel or chassis mounting accessory. This configuration is supplied without an integrated fixing flange, so an appropriate mounting clip or flange may be required. Electrical connections use Faston 250 terminals measuring 6.3 × 0.8 mm.
What contact material is used in this relay?
The Finder 65.31.9.024.4309 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 65.31.9.024.4309?
The relay has a specified mechanical endurance of 30 million operations and an electrical endurance of approximately 30,000 operations under specified rated-load conditions. Actual service life depends on switching frequency, electrical loading and environmental conditions.
What is the difference between the Finder 65.31.9.024.4309 and 65.31.9.024.4009?
The principal difference is the contact arrangement and current rating. The 65.31.9.024.4309 has one normally open contact rated at 30 A, while the 65.31.9.024.4009 has one normally open and one normally closed contact rated at 20 A. Both use a 24 V DC coil, but their switching functions and contact ratings are different.
Can the Finder 65.31.9.024.4309 switch DC loads?
Yes. The relay can switch compatible DC loads and has a 30 A resistive contact rating at 24 V DC. However, its maximum permissible DC switching current depends on the 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 demanding industrial automation, electrical control and power management applications. The Finder 65.31.9.024.4309 combines a 30 A contact rating, 24 V DC operating coil, single normally open contact, silver tin oxide contact material, minimum 3 mm contact gap and Faston 250 terminals to provide a dependable high-current switching solution for compatible industrial equipment.
