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65.31.9.110.4300 Finder Power relay 1NO 30A DC 110VNO
Finder 65.31.9.110.4300 is a 30 A industrial electromechanical power relay with a 110 V DC coil, one normally open contact, silver tin oxide contact material, minimum 3 mm open-contact gap, Faston 250 terminals and rear flange mounting for industrial automation and high-current electrical switching.
£11.28
Why Choose the Finder 65.31.9.110.4300 Power Relay?
The Finder 65.31.9.110.4300 is a heavy-duty 30 A industrial electromechanical power relay designed for reliable switching of high-current electrical loads. Part of the Finder 65 Series, this model combines a 110 V DC operating coil with a single normally open contact (SPST-NO / 1 Form A), making it suitable for industrial automation, machinery and electrical control systems.
Featuring silver tin oxide (AgSnO₂) contacts, the Finder 65.31.9.110.4300 provides a robust switching solution for compatible industrial loads. The 65.31-4300 configuration offers a 30 A rated contact current, 250 V AC rated contact voltage and 7,500 VA AC1 resistive switching capacity.
The relay features a minimum 3 mm open-contact gap, providing increased physical separation when the contact is open. Its Faston 250 quick-connect terminals and rear flange mounting arrangement support practical installation in compatible industrial panels and electrical equipment.
Key Advantages
- 30 A rated contact current for demanding industrial electrical switching.
- 110 V DC operating coil for compatible 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 dependable industrial switching.
- 7,500 VA AC1 resistive switching capacity for appropriately rated loads.
- 1.3 W nominal DC coil consumption.
- Faston 250 quick-connect terminals for convenient electrical connections.
- Rear flange mounting for secure chassis or panel installation.
- Non-latching operation returns the contact to its open state when coil power is removed.
- 30 million operations mechanical endurance under specified conditions.
- Suitable for industrial automation, heating equipment, machinery and electrical power control.
Key Features
- Finder 65 Series industrial power relay.
- 30 A rated contact current.
- 110 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.
- 1.3 W nominal DC coil consumption.
- Approximately 11.8 mA nominal coil current.
- Approximately 9.31 kΩ calculated coil resistance.
- Faston 250 terminals measuring 6.3 × 0.8 mm.
- Rear flange mounting arrangement.
- Four electrical terminals for the coil and normally open contact.
- 30 million operations mechanical endurance.
- Monostable, non-latching operation.
Reliable 30 A Switching for 110 V DC Industrial Control Systems
The Finder 65.31.9.110.4300 operates as an electrically controlled power switch. When its 110 V DC coil is energised, the normally open contact closes and allows current to flow through the connected load circuit. When the coil supply is removed, the contact returns to its normally open position.
Its single-pole normally open contact arrangement is suitable for applications where one substantial electrical load must be activated by a separate control signal. The 30 A contact rating makes the 65.31-4300 configuration suitable for appropriately rated resistive loads, industrial heating equipment and other compatible electrical circuits.
The silver tin oxide contact material supports repeated switching within the manufacturer's specified electrical ratings. The minimum 3 mm open-contact gap provides increased physical separation when the relay is de-energised, although the complete installation must still satisfy the relevant electrical safety and isolation requirements.
The Faston 250 terminals allow convenient electrical connections using compatible receptacles, while the rear flange mounting arrangement supports secure attachment to suitable panels and chassis. The 110 V DC coil makes this relay particularly relevant to industrial control systems designed around that nominal DC supply voltage.
Typical Applications
- Industrial automation and electrical control panels.
- 110 V DC control circuits.
- High-current resistive load switching.
- Industrial heating elements and temperature control equipment.
- Commercial and industrial lighting control.
- Industrial machinery and manufacturing equipment.
- Electrical power management systems.
- 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 110 V DC coil and 30 A normally open contact.
Technical Specifications
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| Device Type | Power Relay | |
|---|---|---|
| Terminal Type | Faston / flat-pin | |
| Load Voltage | 400 V AC | |
| Mounting Type | Panel | |
| Switching Current (A) | 30 A | |
| Manufacturer | Finder | |
| Series | 65 Series Power Relays | |
| Model | 65.31.9.110.4300 | |
| Product type | Industrial electromechanical power relay | |
| Contact configuration | SPST-NO / 1 Form A | |
| Number of poles | 1 | |
| Normally open contacts | 1 | |
| Rated contact current | 30 A | |
| Rated contact voltage | 250 V AC | |
| Maximum switching voltage | 400 V AC | |
| Rated resistive load (AC1) | 7,500 VA | |
| Rated inductive load (AC15 at 230 V AC) | 1,250 VA | |
| Single-phase motor rating at 230 V AC | 1.5 kW | |
| Nominal coil voltage | 110 V DC | |
| Coil code | 9.110 | |
| Coil type | DC, non-latching | |
| Nominal coil consumption | 1.3 W | |
| Calculated nominal coil current | Approximately 11.8 mA | |
| Calculated nominal coil resistance | Approximately 9,310 Ω | |
| Indicative coil operating voltage range | 93.5 to 121 V DC, based on 85–110% of nominal voltage | |
| Contact material | Silver tin oxide (AgSnO₂) | |
| Open-contact gap | At least 3 mm | |
| 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 | 4 | |
| Operating temperature | −40 to +75 °C | |
| Mechanical endurance | 30 million operations under specified conditions | |
| Electrical endurance | 30,000 operations at the specified rated AC1 load | |
| Operating time | Approximately 15 ms | |
| Release time | Approximately 4 ms | |
| Environmental protection category | RT I | |
| Application | Industrial automation, high-current electrical switching and machinery control |
Frequently Asked Questions
What is the Finder 65.31.9.110.4300 used for?
The Finder 65.31.9.110.4300 is a 30 A industrial power relay used for switching compatible electrical loads in machinery, automation systems and control panels. It operates a single normally open contact using a 110 V DC coil.
What is the coil voltage of the Finder 65.31.9.110.4300?
The relay has a 110 V DC nominal coil voltage. Its nominal coil consumption is 1.3 W, corresponding to a calculated nominal coil current of approximately 11.8 mA.
What is the operating voltage range of the 110 V DC coil?
An indicative operating range based on 85–110% of nominal voltage is 93.5 to 121 V DC. The exact permitted limits should be checked against the manufacturer's coil specifications, particularly where ambient temperature varies.
What is the contact rating of this relay?
The Finder 65.31.9.110.4300 has a 30 A rated contact current at 250 V AC, with a rated resistive switching capacity of 7,500 VA. The permissible switching load depends on the voltage, load characteristics and applicable utilisation category.
How many contacts does the Finder 65.31.9.110.4300 have?
The relay has one normally open contact (SPST-NO / 1 Form A). The contact closes when the coil is energised and opens when coil power is removed. It does not provide a normally closed or changeover contact.
What is the benefit of the 3 mm contact gap?
The minimum 3 mm open-contact gap provides increased physical separation between the contacts when the relay is de-energised. The complete electrical installation must still meet all applicable safety and isolation requirements.
How is the Finder 65.31.9.110.4300 mounted?
The relay uses a rear flange mounting arrangement for installation on a compatible panel or chassis. Electrical connections use Faston 250 quick-connect terminals measuring 6.3 × 0.8 mm.
What contact material is used in the Finder 65.31.9.110.4300?
The relay uses silver tin oxide (AgSnO₂) contacts. This cadmium-free contact material is designed for dependable switching of compatible industrial electrical loads.
What is the expected service life of this relay?
The Finder 65.31-4300 DC coil range has a specified mechanical endurance of 30 million operations and an electrical endurance of 30,000 operations at the specified rated AC1 load. Actual service life depends on electrical loading, switching frequency and environmental conditions.
What is the difference between the Finder 65.31.9.110.4300 and 65.31.9.110.4000?
The main difference is the contact configuration and current rating. The 65.31.9.110.4300 has one normally open contact rated at 30 A, while the 65.31.9.110.4000 has one normally open and one normally closed contact rated at 20 A. Both use a 110 V DC coil, but their switching functions differ.
Can the Finder 65.31.9.110.4300 switch DC loads?
Yes. The Finder 65.31-4300 range can switch compatible DC loads, but the permissible current depends on the DC voltage and load characteristics. Higher-voltage or inductive DC circuits require careful assessment against the manufacturer's breaking-capacity data.
Does the Finder 65.31.9.110.4300 require a continuous coil supply?
Yes. This is a non-latching electromechanical relay. The coil must remain energised to keep the normally open contact closed. When coil power is removed, the contact returns to its open position.
Trusted by Industrial Automation Professionals Worldwide
Finder 65 Series power relays are designed for demanding industrial automation, machinery and electrical control applications. The Finder 65.31.9.110.4300 combines a 30 A contact rating, 110 V DC operating coil, single normally open contact, silver tin oxide contact material, minimum 3 mm contact gap, Faston 250 terminals and rear flange mounting to provide a dependable high-current switching solution for compatible industrial equipment.
