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65.31.8.400.4000 Finder Power relay 1NO 30A 400VNO
Finder 65.31.8.400.4000 is a Series 65 electromagnetic power relay featuring a 400 V AC coil, 20 A single-pole changeover contacts, AgSnO2 contact material and flange mounting with Faston 250 terminals for industrial electrical switching applications.
Why Choose the Finder 65.31.8.400.4000 Power Relay?
The Finder 65.31.8.400.4000 is a robust and reliable 20 A electromagnetic power relay designed for switching electrical loads in industrial automation, electrical control panels and power distribution equipment. As part of the Finder Series 65 power relay range, it combines high-current switching capability with versatile contact arrangements and a durable construction suitable for industrial applications.
Featuring a 400 V AC operating coil and a single-pole changeover contact arrangement comprising one normally open (NO) and one normally closed (NC) contact, this relay provides flexible switching between two electrical circuits. Its electromagnetic operating mechanism enables reliable control of electrical equipment, while the silver alloy contact system supports dependable switching performance.
With a 20 A rated contact current, a 250 V AC rated contact voltage and convenient Faston 250 quick-connect terminals, the Finder 65.31.8.400.4000 is suitable for industrial machinery, heating equipment, electrical distribution systems and automation controls. Its flange-mounted construction allows straightforward installation inside electrical cabinets and control assemblies.
Key Advantages
- Reliable 20 A electromagnetic power relay for industrial electrical switching.
- 400 V AC coil suitable for compatible high-voltage AC control circuits.
- One normally open and one normally closed contact provide flexible changeover switching.
- 5,000 VA AC1 switching capacity for resistive electrical loads.
- Silver alloy contacts provide dependable switching performance.
- Faston 250 quick-connect terminals simplify electrical connections.
- Flange-mounted construction enables secure installation in control panels.
- Electrical isolation between the coil and contact circuits supports reliable control system integration.
- Suitable for industrial equipment requiring dependable high-current switching.
Key Features
- Finder Series 65 electromagnetic power relay.
- 20 A rated contact current.
- 400 V AC nominal coil voltage.
- 50/60 Hz AC coil operation.
- 1 NO + 1 NC contact configuration.
- 250 V AC rated contact voltage.
- 400 V AC maximum switching voltage.
- 5,000 VA rated AC1 switching capacity.
- 120 A maximum peak contact current for short-duration inrush conditions.
- AgSnO₂ contact material for reliable switching.
- 2.2 VA nominal AC coil consumption at 50 Hz.
- 6 mA nominal coil current.
- Faston 250 terminals measuring 6.3 × 0.8 mm.
- Flange mounting for secure panel installation.
- Wide operating temperature range for industrial environments.
Reliable Changeover Switching for Industrial Control
Electromagnetic power relays such as the Finder 65.31.8.400.4000 allow electrical loads to be controlled using a separate coil circuit. When the 400 V AC coil is energised, the relay changes its contact state, opening the normally closed contact and closing the normally open contact. This allows electrical equipment to be switched between alternative circuit paths using a single control signal.
The Finder Series 65 is designed for applications requiring reliable electrical switching, durable contact materials and convenient installation. The 65.31.8.400.4000 combines a 20 A contact rating with a versatile changeover contact arrangement, making it suitable for industrial equipment, heating systems, motor controls and electrical distribution assemblies where the relay's electrical ratings meet the application requirements.
Typical Applications
- Industrial automation and electrical control panels.
- Power distribution and electrical switching equipment.
- Heating systems, boilers and burner controls.
- Industrial ovens and heating appliances.
- Industrial washing machines and process equipment.
- Motor control and machinery switching circuits.
- Backup generator control and auxiliary switching systems.
- Electrical equipment requiring normally open and normally closed switching functions.
- OEM automation systems and industrial machinery.
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) | 20 A | |
| Manufacturer | Finder | |
| Series | Series 65 Power Relays | |
| Model | 65.31.8.400.4000 | |
| Product type | Electromagnetic power relay | |
| Contact configuration | 1 NO + 1 NC (changeover) | |
| Number of poles | 1 | |
| Rated contact current | 20 A | |
| Rated contact voltage | 250 V AC | |
| Maximum switching voltage | 400 V AC | |
| Rated switching capacity (AC1) | 5,000 VA | |
| Rated switching capacity (AC15 at 230 V AC) | 1,000 VA | |
| Single-phase motor rating (230 V AC) | 1.1 kW | |
| DC1 breaking capacity at 24 V DC | 20 A | |
| Nominal coil voltage | 400 V AC | |
| Coil frequency | 50/60 Hz | |
| Nominal AC coil consumption | 2.2 VA at 50 Hz | |
| Nominal coil current | 6 mA | |
| Coil resistance | 19.8 kΩ | |
| AC operating voltage range | 320–440 V AC | |
| Contact material | Silver tin oxide (AgSnO₂) | |
| Terminal type | Faston 250 quick-connect terminals | |
| Terminal dimensions | 6.3 × 0.8 mm | |
| Mounting type | Flange / panel mounting | |
| Operating temperature | −40 to +75 °C | |
| Mechanical life | 10 million operations | |
| Electrical life at rated AC1 load | 80,000 operations | |
| Operate time | 10 ms | |
| Release time | 6 ms | |
| Impulse withstand voltage between coil and contacts | 4 kV (1.2/50 µs) | |
| Environmental protection category | RT I | |
| Dimensions | approximately 59.2 × 36.5 × 32.2 mm |
Frequently Asked Questions
What is the Finder 65.31.8.400.4000 used for?
The Finder 65.31.8.400.4000 is a 20 A electromagnetic power relay used for switching electrical loads in industrial automation systems, control panels, heating equipment and machinery.
What coil voltage does this relay require?
The relay uses a 400 V AC coil designed for operation at 50/60 Hz. Its nominal AC coil consumption is approximately 2.2 VA at 50 Hz.
What is the contact configuration of the Finder 65.31.8.400.4000?
This relay features one normally open (NO) and one normally closed (NC) contact arranged as a single-pole changeover contact system, allowing the controlled circuit to switch between two contact positions.
What is the switching capacity of this relay?
The relay provides a 20 A rated contact current, a rated contact voltage of 250 V AC and a maximum switching voltage of 400 V AC. Its rated AC1 switching capacity is 5,000 VA.
How is the Finder 65.31.8.400.4000 installed?
The relay is designed for flange mounting on a suitable panel or equipment structure and uses 6.3 × 0.8 mm Faston 250 quick-connect terminals for electrical connections.
Trusted by Industrial Automation Professionals
Finder Series 65 power relays are designed to deliver dependable electrical switching in industrial control systems, machinery and power distribution equipment. The Finder 65.31.8.400.4000 combines a 20 A contact rating, 400 V AC coil, versatile changeover contacts and convenient flange mounting for reliable integration into industrial electrical control applications.
