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65.31.8.400.0000 Finder Power relay 1NO1 NC 20A 400V
Finder 65.31.8.400.0000 is a 20 A electromechanical power relay with a 400 V AC coil, one normally open and one normally closed AgCdO contact, a rear mounting flange and Faston 250 terminals.
This product has been superseded
A direct replacement is available below.
Replacement product
65.31.8.400.4000 Finder Power relay 1NO 30A 400VNO
SKU: 65.31.8.400.4000
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Why Choose the Finder 65.31.8.400.0000 Power Relay?
The Finder 65.31.8.400.0000 is a heavy-duty electromechanical power relay designed for dependable switching in industrial machinery, automation equipment and electrical control systems. Part of the established Finder 65 Series, it combines a 400 V AC coil with one normally open and one normally closed contact rated at 20 A.
This relay uses silver cadmium oxide contacts to provide reliable electrical switching under demanding operating conditions. Its complementary contact arrangement allows one circuit to close while the other opens when the coil is energised, making the relay suitable for control, interlocking and change-of-state functions.
The 65.31.8.400.0000 features a rear mounting flange and Faston 250 quick-connect terminals measuring 6.3 × 0.8 mm. Its 5,000 VA AC1 switching capacity and 400 V AC coil make it particularly suitable for industrial control systems operating from a phase-to-phase supply.
Key Advantages
- Heavy-duty electromechanical relay for industrial power switching.
- One normally open and one normally closed contact for flexible control.
- 20 A nominal contact rating for demanding electrical loads.
- 400 V AC coil suitable for industrial control supplies.
- Silver cadmium oxide contacts support dependable switching performance.
- Rear mounting flange and Faston terminals simplify panel installation.
Key Features
- Finder 65 Series power relay.
- 1 NO + 1 NC contact configuration.
- 20 A nominal contact current.
- 400 V AC rated coil voltage.
- 5,000 VA maximum AC1 switching capacity.
- Silver cadmium oxide (AgCdO) contact material.
- Faston 250 terminals measuring 6.3 × 0.8 mm.
- Monostable, non-polarised operating mechanism.
Reliable Power Switching for Industrial Equipment
Electromechanical power relays allow a control circuit to operate a separate, higher-current electrical load. When 400 V AC is applied to the coil, the normally open contact closes and the normally closed contact opens, providing two complementary switching states from one control signal.
The Finder 65 Series is designed for industrial applications where reliable power switching, electrical isolation and convenient panel installation are required. The high-current contacts, rear fixing flange and Faston connections make this relay easy to incorporate into machinery and electrical control assemblies.
Typical Applications
- Industrial machinery and automation systems.
- Pump and motor control panels.
- Heating, ventilation and refrigeration equipment.
- Three-phase industrial control systems.
- Power distribution and electrical control cabinets.
- Generators and uninterruptible power supply equipment.
Technical Specifications
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| Device Type | Power Relay | |
|---|---|---|
| Terminal Type | Faston / flat-pin | |
| Load Voltage | 400 V AC | |
| Mounting Type | Panel | |
| Coil / Supply Voltage | 400 V AC | |
| Contacts | 2NO + 2NC | |
| HS Code | 85364900 | |
| Manufacturer | Finder | |
| Series | 65 Series | |
| Model | 65.31.8.400.0000 | |
| Product type | Electromechanical power relay | |
| Contact configuration | 1 normally open + 1 normally closed (1 NO + 1 NC) | |
| Nominal contact current | 20 A | |
| Maximum instantaneous current | 120 A for 5 ms | |
| Rated contact voltage | 250 V AC | |
| Maximum switching voltage | 400 V AC / 220 V DC | |
| Maximum AC1 switching capacity | 5,000 VA | |
| AC15 switching capacity | 1,000 VA at 230 V AC | |
| Rated coil voltage | 400 V AC | |
| Coil frequency | 50 / 60 Hz | |
| Coil current | 6 mA | |
| Coil resistance | 19.8 kΩ | |
| Coil power consumption | 2.2 VA | |
| Contact material | Silver cadmium oxide (AgCdO) | |
| Terminal type | Faston 250 quick-connect terminals | |
| Terminal dimensions | 6.3 × 0.8 mm | |
| Mounting type | Panel mounting with rear fixing flange | |
| Coil-to-contact insulation | 8 mm clearance and creepage distance | |
| Impulse withstand voltage | 6 kV between coil and contacts | |
| Protection category | RT I | |
| Operating temperature | -40 to +75 °C | |
| Dimensions (H × W × D) | approximately 57.2 × 32.2 × 36.5 mm |
Frequently Asked Questions
What is the Finder 65.31.8.400.0000 used for?
This power relay is used to switch electrical loads in industrial machinery, automation systems, pump controls, heating equipment and electrical control panels.
What coil voltage does this relay require?
The Finder 65.31.8.400.0000 has a 400 V AC coil designed for operation at 50 / 60 Hz.
What contact configuration does this relay provide?
The relay provides one normally open and one normally closed contact, allowing complementary switching from a single coil signal.
What is the contact rating of this relay?
The contacts have a nominal current rating of 20 A at 250 V AC, with a maximum AC1 switching capacity of 5,000 VA.
How is the Finder 65.31.8.400.0000 installed?
The relay is panel mounted using its rear fixing flange and connected through 6.3 × 0.8 mm Faston 250 terminals.
Trusted Industrial Switching from Finder
Finder 65 Series power relays are used throughout industrial control and automation equipment where reliable high-current switching, flexible contact arrangements and secure panel installation are required.
