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.
65.31.9.110.4000 Finder Power relay 1NO 30A DC 110VNO
Finder 65.31.9.110.4000 is a 20 A industrial electromechanical power relay with a 110 V DC coil, one normally open and one normally closed contact, silver tin oxide contact material, Faston 250 quick-connect terminals and rear flange mounting for industrial automation and electrical control applications.
£11.64
Why Choose the Finder 65.31.9.110.4000 Power Relay?
The Finder 65.31.9.110.4000 is a heavy-duty 20 A industrial electromechanical power relay designed for dependable electrical switching in machinery, industrial automation and electrical control panels. Part of the established Finder 65 Series, this model combines a 110 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 65.31.9.110.4000 is designed for repeated switching of compatible industrial electrical 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, machinery control, electrical load switching and automation equipment.
The relay provides two independently wired switching contacts, allowing one circuit to close while another opens when the coil is energised. Its Faston 250 quick-connect terminals and rear flange mounting arrangement support convenient installation in compatible industrial panels and equipment.
Key Advantages
- 20 A rated contact current for demanding industrial electrical switching.
- 110 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 industrial switching.
- 5,000 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 practical electrical connections.
- Rear flange mounting for secure chassis or panel installation.
- 30 million operations mechanical endurance under specified conditions.
- 80,000 operations electrical endurance at the specified rated AC1 load.
- Non-latching operation returns both contacts to their normal states when coil power is removed.
- Wide operating temperature range for demanding industrial environments.
Key Features
- Finder 65 Series industrial power relay.
- 20 A rated contact current.
- 110 V DC nominal coil voltage.
- One normally open and one normally closed contact.
- SPST-NO + SPST-NC contact arrangement.
- 250 V AC rated contact voltage.
- 400 V AC maximum switching voltage, subject to applicable installation conditions.
- 5,000 VA AC1 resistive load rating.
- 1,000 VA AC15 switching capacity at 230 V AC.
- Silver tin oxide (AgSnO₂) contact material.
- 1.3 W nominal DC coil consumption.
- 11.7 mA nominal coil current.
- 9,420 Ω nominal coil resistance.
- 93.5 to 121 V DC specified coil operating range under reference conditions.
- 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 rated AC1 load.
- Monostable, non-latching operation.
Reliable 20 A Switching for 110 V DC Industrial Control Systems
The Finder 65.31.9.110.4000 operates as an electrically controlled switching device. When its 110 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 contact arrangement is particularly useful where one circuit must be activated while another is disconnected. Applications include auxiliary equipment control, electrical signalling, industrial machinery and complementary switching functions. 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 silver tin oxide contact material supports repeated switching within the manufacturer's specified electrical limits. Its 20 A rated contact current and 5,000 VA AC1 resistive switching capacity make it suitable for appropriately rated industrial power circuits. Actual permissible switching current depends on load type, voltage, switching frequency and environmental conditions.
With Faston 250 quick-connect terminals and a rear flange mounting arrangement, the Finder 65.31.9.110.4000 offers a practical installation solution for compatible electrical panels and equipment. Its 110 V DC coil makes it particularly relevant to industrial control systems and equipment designed around this nominal DC supply voltage.
Typical Applications
- Industrial automation and electrical control panels.
- 110 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 equipment.
- Maintenance and replacement of compatible industrial relays.
- Applications requiring a 110 V DC coil and 20 A 1 NO + 1 NC contacts.
Technical Specifications
Tick the specs you need, then view products that match.
| Device Type | Power Relay | |
|---|---|---|
| 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 | 65.31.9.110.4000 | |
| Product type | Industrial electromechanical power relay | |
| Contact configuration | 1 NO + 1 NC (SPST-NO + SPST-NC) | |
| Normally open contacts | 1 | |
| Normally closed contacts | 1 | |
| Contact arrangement | Two independently wired single-throw contacts | |
| Rated contact current | 20 A | |
| Rated contact voltage | 250 V AC | |
| Maximum switching voltage | 400 V AC | |
| Rated resistive load (AC1) | 5,000 VA | |
| Rated inductive load (AC15 at 230 V AC) | 1,000 VA | |
| Single-phase motor rating at 230 V AC | 1.1 kW | |
| DC1 breaking capacity at 24 V DC | 20 A | |
| DC1 breaking capacity at 110 V DC | 0.8 A | |
| DC1 breaking capacity at 220 V DC | 0.5 A | |
| Minimum switching load | 1,000 mW (10 V / 10 mA) | |
| Nominal coil voltage | 110 V DC | |
| Coil code | 9.110 | |
| Coil type | DC, non-latching | |
| Nominal coil consumption | 1.3 W | |
| Nominal coil current | 11.7 mA | |
| Nominal coil resistance | 9,420 Ω | |
| Coil operating voltage range | 93.5 to 121 V DC under specified reference conditions | |
| 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 | |
| Overall dimensions | 36.5 × 32.2 × 59.2 mm | |
| Operating temperature | −40 to +75 °C | |
| Mechanical endurance | 30 million operations | |
| Electrical endurance | 80,000 operations at the specified rated AC1 load | |
| Operating time | Approximately 10 ms | |
| Release time | Approximately 12 ms | |
| Coil-to-contact impulse withstand voltage | 4 kV | |
| Dielectric strength between open contacts | 1,500 V AC | |
| Environmental protection category | RT I | |
| Application | Industrial automation, machinery control and electrical load switching |
Frequently Asked Questions
What is the Finder 65.31.9.110.4000 used for?
The Finder 65.31.9.110.4000 is a 20 A industrial power relay used for switching compatible electrical loads in machinery, automation systems and control panels. It operates one normally open and one normally closed contact using a 110 V DC coil.
What is the coil voltage of the Finder 65.31.9.110.4000?
The relay has a 110 V DC nominal coil voltage. Its nominal coil consumption is 1.3 W, with a nominal coil current of 11.7 mA and a nominal coil resistance of 9,420 Ω.
What is the operating voltage range of the 110 V DC coil?
The specified coil operating voltage range is 93.5 to 121 V DC under the manufacturer's reference conditions. Actual operating limits may vary with ambient temperature and installation conditions.
What is the contact rating of this relay?
The Finder 65.31.9.110.4000 has a 20 A rated contact current at 250 V AC, with a rated resistive switching capacity of 5,000 VA. The permissible switching load depends on the load characteristics and applicable utilisation category.
How many contacts does the Finder 65.31.9.110.4000 have?
The relay has two separate contacts: one normally open (NO) and one normally closed (NC). Energising the coil closes the NO contact and opens the NC contact. Both return to their normal states when coil power is removed.
Is the Finder 65.31.9.110.4000 a changeover relay?
No. The relay provides two independently wired single-throw contacts, one normally open and one normally closed. A conventional changeover relay uses a shared common terminal, whereas this model provides two separate switching circuits.
How is the Finder 65.31.9.110.4000 mounted?
The relay uses a rear flange mounting arrangement for installation on a compatible panel or chassis. Electrical connections are made using Faston 250 quick-connect terminals measuring 6.3 × 0.8 mm.
What contact material is used in the Finder 65.31.9.110.4000?
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 65.31.9.110.4000 has a specified mechanical endurance of 30 million operations and an electrical endurance of 80,000 operations at the rated AC1 load. Actual service life depends on switching frequency, electrical loading and environmental conditions.
What is the difference between the Finder 65.31.9.110.4000 and 65.31.9.110.4300?
The main difference is the contact configuration and current rating. The 65.31.9.110.4000 has one normally open and one normally closed contact rated at 20 A, while the 65.31.9.110.4300 belongs to the single normally open, 30 A contact configuration. Both use a 110 V DC coil, but their switching functions differ.
Can the Finder 65.31.9.110.4000 switch DC loads?
Yes. The relay can switch compatible DC loads. Finder 65.31 specifications include resistive DC1 breaking capacities of 20 A at 24 V DC, 0.8 A at 110 V DC and 0.5 A at 220 V DC. Higher-voltage or inductive DC applications require careful assessment against the manufacturer's DC breaking-capacity characteristics.
Does the Finder 65.31.9.110.4000 require a continuous coil supply?
Yes. This is a non-latching electromechanical relay. The coil must remain energised to hold the normally open contact closed and the normally closed contact open. When the coil supply is removed, both contacts return to their normal states.
Trusted by Industrial Automation Professionals Worldwide
Finder 65 Series power relays are designed for demanding industrial automation, machinery and electrical control applications. The Finder 65.31.9.110.4000 combines a 20 A contact rating, 110 V DC operating coil, one normally open and one normally closed contact, silver tin oxide contact material, Faston 250 terminals and rear flange mounting to provide a versatile switching solution for compatible industrial equipment.
