Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
Finder 65.31.9.036.4300 – 65 Series Power relays
Finder 65.31.9.036.4300 is a 30 A industrial electromechanical power relay with a 36 V DC coil, one normally open contact, silver tin oxide contact material, a minimum 3 mm contact gap, Faston 250 terminals and rear flange mounting for industrial automation and high-current electrical switching.
Why Choose the Finder 65.31.9.036.4300 Power Relay?
The Finder 65.31.9.036.4300 is a heavy-duty 30 A industrial electromechanical power relay designed for reliable high-current switching in automation systems, machinery and electrical control equipment. Part of the established Finder 65 Series, this model combines a 36 V DC operating coil with a single normally open contact (SPST-NO / 1 Form A).
Featuring silver tin oxide (AgSnO₂) contact material, the Finder 65.31.9.036.4300 is designed for repeated switching of compatible industrial electrical 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 applications involving industrial heating, machinery, electrical power control and automation.
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 secure installation in compatible electrical panels and equipment.
Key Advantages
- 30 A rated contact current for high-current industrial switching.
- 36 V DC operating coil for compatible DC control systems.
- Single normally open contact (SPST-NO) for straightforward load control.
- Minimum 3 mm contact gap for increased separation between open contacts.
- Silver tin oxide (AgSnO₂) contacts for dependable industrial switching.
- 7,500 VA AC1 switching capacity for appropriately rated resistive loads.
- 1.3 W nominal DC coil consumption for efficient control operation.
- Faston 250 quick-connect terminals for convenient electrical connections.
- Rear flange mounting for secure chassis or panel installation.
- 30 million mechanical operations specified for DC coil versions.
- Non-latching operation automatically opens the contact when coil power is removed.
- Suitable for industrial automation, power management and electrical equipment control.
Key Features
- Finder 65 Series industrial power relay.
- 30 A rated contact current.
- 36 V DC nominal coil voltage.
- Single normally open contact (1 NO / SPST-NO).
- 250 V AC rated contact voltage.
- 400 V AC maximum switching voltage.
- 7,500 VA rated resistive switching load (AC1).
- 1,250 VA AC15 load rating 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.
- 1.3 W nominal coil consumption.
- Approximately 36 mA nominal coil current.
- 30 million operations mechanical endurance.
- 4 kV coil-to-contact impulse withstand voltage.
- RT I environmental protection category.
- Non-latching DC coil operation.
Reliable 30 A Switching for 36 V DC Industrial Control Systems
The Finder 65.31.9.036.4300 operates as an electrically controlled power switch. When its 36 V DC coil is energised, the relay closes its normally open contact, allowing current to flow through the connected load circuit. When coil power is removed, the contact returns to its open position.
The single-pole normally open contact arrangement makes this relay particularly suitable for controlling one high-current electrical load using a separate DC control signal. Unlike variants with both normally open and normally closed contacts, this model provides one switching path rated at 30 A.
The relay's AgSnO₂ contact material supports reliable switching within the manufacturer's specified electrical limits. Its minimum 3 mm contact gap provides increased separation when open, making it useful in equipment designed around this contact-gap requirement. However, the relay should not be considered a replacement for a dedicated safety isolator unless the complete installation meets the applicable safety standards.
With Faston 250 quick-connect terminals and a rear flange mounting arrangement, the Finder 65.31.9.036.4300 offers a practical solution for compatible panel and chassis installations. Its 36 V DC coil makes it particularly relevant to industrial equipment using this nominal DC control voltage.
Typical Applications
- Industrial automation and electrical control panels.
- High-current electrical load switching.
- 36 V DC control circuits.
- 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 36 V DC coil and a 30 A normally open contact.
Technical Specifications
Tick the specs you need, then view products that match.
| 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 | 65.31.9.036.4300 | |
| 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 | |
| Maximum peak contact current | 120 A for 5 ms | |
| 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 | |
| DC1 breaking capacity at 24 V DC | 30 A | |
| DC1 breaking capacity at 110 V DC | 1.1 A | |
| DC1 breaking capacity at 220 V DC | 0.7 A | |
| Minimum switching load | 1,000 mW (10 V / 10 mA) | |
| Nominal coil voltage | 36 V DC | |
| Coil type | DC, non-latching | |
| Nominal coil consumption | 1.3 W | |
| Calculated nominal coil current | Approximately 36 mA | |
| Calculated nominal coil resistance | Approximately 1 kΩ | |
| DC coil operating range | Approximately 30.6 to 39.6 V DC under specified reference conditions | |
| 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 for DC coil versions | |
| Electrical endurance at rated AC1 load | 30,000 operations | |
| Operating time | Approximately 15 ms | |
| Release time | Approximately 4 ms | |
| Coil-to-contact impulse withstand voltage | 4 kV | |
| Dielectric strength between open contacts | 2,500 V AC | |
| Environmental protection category | RT I | |
| Application | Industrial automation, high-current switching and electrical control systems |
Frequently Asked Questions
What is the Finder 65.31.9.036.4300 used for?
The Finder 65.31.9.036.4300 is a 30 A industrial power relay used for switching electrical loads in automation systems, machinery and electrical control panels. It uses a 36 V DC coil to operate a single normally open contact.
What is the coil voltage of the Finder 65.31.9.036.4300?
The relay has a 36 V DC nominal coil voltage. The Finder 65 Series DC coil specification gives a nominal power consumption of 1.3 W. This corresponds to approximately 36 mA at the nominal voltage.
What is the operating voltage range of the 36 V DC coil?
The Finder 65 Series DC coil operating range is approximately 85% to 110% of nominal voltage. For a 36 V DC coil, this corresponds to approximately 30.6 to 39.6 V DC under the manufacturer's specified reference conditions.
What is the contact rating of this relay?
The Finder 65.31.9.036.4300 has a 30 A rated contact current at 250 V AC, with a rated resistive switching capacity of 7,500 VA. The actual permissible load depends on its switching category, voltage and operating conditions.
How many contacts does the Finder 65.31.9.036.4300 have?
The relay has one normally open contact (SPST-NO / 1 Form A). The contact closes when the coil is energised and opens when 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 has a minimum 3 mm gap between its open contacts. This provides increased physical separation when the relay is de-energised. The overall equipment design must still comply with applicable electrical safety and isolation requirements.
How is the Finder 65.31.9.036.4300 mounted?
The relay uses a rear flange mounting arrangement for installation on a compatible panel or chassis. Electrical connections are made through Faston 250 quick-connect terminals measuring 6.3 × 0.8 mm.
What contact material is used in the Finder 65.31.9.036.4300?
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 relay range has a specified mechanical endurance of 30 million operations and an electrical endurance of 30,000 operations at the rated AC1 load. Actual service life depends on electrical loading, switching frequency and environmental conditions.
What is the difference between the Finder 65.31.9.036.4300 and 65.31.9.024.4300?
Both models belong to the Finder 65.31-4300 range and provide a 30 A single normally open contact. The key difference is the coil voltage: the 65.31.9.036.4300 uses a 36 V DC coil, while the 65.31.9.024.4300 uses a 24 V DC coil. They should not be substituted without confirming the available control supply.
Can the Finder 65.31.9.036.4300 switch DC loads?
Yes. The relay can switch compatible DC loads. The Finder 65.31-4300 specification lists resistive DC1 breaking capacities of 30 A at 24 V DC, 1.1 A at 110 V DC and 0.7 A at 220 V DC. Higher-voltage or inductive DC applications require careful assessment against the manufacturer's switching characteristics.
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 65.31.9.036.4300 combines a 30 A contact rating, 36 V DC operating coil, single normally open contact, silver tin oxide contact material, minimum 3 mm contact gap and Faston 250 terminals to provide dependable high-current switching for compatible industrial equipment.
