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Finder 66.82.9.125.4000 – 66 Series Power relays
Finder 66.82.9.125.4000 is a flange-mounted electromechanical power relay from the Finder 66 Series featuring a 125 V DC coil, two changeover AgSnO2 contacts, a 30 A normally open contact rating and Faston 250 terminals for industrial electrical switching applications.
Why Choose the Finder 66.82.9.125.4000 Power Relay?
The Finder 66.82.9.125.4000 is a high-current electromechanical power relay from the Finder 66 Series, featuring a 125 V DC operating coil, two changeover contacts and flange mounting with Faston quick-connect terminals for industrial electrical switching applications.
Designed for machinery control, power management, heating equipment and industrial automation, this relay uses a two-pole changeover (2 CO / DPDT) contact configuration to switch two independent electrical circuits between normally closed and normally open positions. Its silver tin oxide (AgSnO₂) contact material is suitable for demanding power-switching applications.
With a 30 A normally open contact rating, 10 A normally closed contact rating and 250 V AC rated contact voltage, the Finder 66.82.9.125.4000 offers flexible switching capability for appropriately rated electrical loads. Its reinforced coil-to-contact insulation and robust flange-mounted construction support integration into industrial electrical control assemblies.
Key Advantages
- 125 V DC operating coil for compatible DC-powered control systems.
- 30 A normally open contact rating for high-current electrical switching.
- Two changeover contacts allow simultaneous control of two independent circuits.
- 10 A normally closed contact rating provides additional switching flexibility.
- Silver tin oxide (AgSnO₂) contacts support dependable power switching.
- Flange-mounted construction enables secure installation.
- Faston 250 quick-connect terminals facilitate wiring and servicing.
- Reinforced insulation separates the control coil from the switched contacts.
- 6 kV impulse withstand voltage between coil and contacts.
- Suitable for industrial automation, electrical equipment and OEM machinery.
Key Features
- Finder 66 Series electromechanical power relay.
- 125 V DC nominal coil voltage.
- 2 CO (DPDT) contact configuration.
- 30 A normally open and 10 A normally closed contact ratings.
- 250 V AC rated contact voltage.
- 440 V AC maximum switching voltage.
- 1.7 W nominal DC coil consumption.
- 9.2 kΩ nominal coil resistance.
- 100–138 V DC nominal coil operating range.
- AgSnO₂ contact material.
- Flange mounting with Faston 250 connections.
- Non-latching electromagnetic operation.
- Reinforced coil-to-contact insulation.
Reliable High-Current Switching for Industrial Automation
Electromechanical power relays enable control circuits to operate electrical loads through mechanically actuated contacts. When the 125 V DC coil of the Finder 66.82.9.125.4000 is energised, its electromagnetic mechanism transfers both changeover contacts from their normally closed positions to their normally open positions. When coil power is removed, the contacts return to their original states.
This switching arrangement is particularly useful where a DC control supply must operate AC or DC load circuits within the relay's published ratings. The Finder 66.82.9.125.4000 combines dual changeover contacts, high-current switching capability and Faston connections to support integration into industrial machinery, heating equipment and electrical control panels.
Engineers should verify the electrical load category, operating voltage, inrush current and switching frequency before installation. A 125 V DC coil must be supplied from a suitable DC control circuit and should not be connected directly to an AC supply.
Typical Applications
- Industrial automation and electrical control panels.
- DC-powered industrial control systems.
- Industrial heating equipment and electrical ovens.
- HVAC and ventilation control assemblies.
- Industrial machinery and OEM equipment.
- Electrical load switching and power management.
- Auxiliary control and circuit selection.
- Motor control circuits within the applicable contact ratings.
- Power distribution and electrical switching equipment.
- Equipment requiring two-pole changeover switching.
Technical Specifications
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| Device Type | Power Relay | |
|---|---|---|
| Terminal Type | Faston / flat-pin | |
| Load Voltage | 440 V AC | |
| Manufacturer | Finder | |
| Series | 66 Series Power Relays | |
| Manufacturer part number | 66.82.9.125.4000 | |
| Product type | Electromechanical power relay | |
| Relay operation | Non-latching / monostable | |
| Contact configuration | 2 CO (DPDT) | |
| Number of poles | 2 | |
| Nominal coil voltage | 125 V DC | |
| Nominal DC coil consumption | 1.7 W | |
| Nominal coil resistance | 9200 Ω | |
| Nominal coil current | 13.6 mA | |
| Nominal coil operating range | 100–138 V DC | |
| Rated normally open contact current | 30 A | |
| Rated normally closed contact current | 10 A | |
| Maximum peak contact current | 120 A (NO) / 20 A (NC) for 5 ms | |
| Rated contact voltage | 250 V AC | |
| Maximum switching voltage | 440 V AC | |
| Rated resistive switching load (AC1) | 7500 VA (NO) / 2500 VA (NC) | |
| Rated inductive switching load (AC15, 230 V AC) | 1200 VA (NO) | |
| Single-phase motor rating (230 V AC) | 1.5 kW (NO) | |
| DC1 breaking capacity at 24 V DC | 25 A (NO) | |
| Minimum switching load | 1000 mW | |
| Contact material | Silver tin oxide (AgSnO₂) | |
| Mounting type | Flange mounting | |
| Connection type | Faston 250 quick-connect terminals | |
| Terminal dimensions | 6.3 × 0.8 mm | |
| Coil-to-contact insulation | Reinforced | |
| Impulse withstand voltage | 6 kV between coil and contacts | |
| Creepage and clearance distance | 8 mm between coil and contacts | |
| Dielectric strength between open contacts | 1500 V AC | |
| Operate time | 8 ms | |
| Release time | 15 ms | |
| Mechanical endurance | 10,000,000 cycles | |
| Electrical endurance at rated AC1 load | 100,000 cycles | |
| Ambient operating temperature | −40 to +70 °C | |
| Environmental protection category | RT II |
Frequently Asked Questions
What is the Finder 66.82.9.125.4000 used for?
The Finder 66.82.9.125.4000 is an electromechanical power relay designed for electrical load switching in industrial automation, machinery, heating equipment and power control systems.
What coil voltage does the Finder 66.82.9.125.4000 require?
The relay uses a 125 V DC nominal operating coil with 1.7 W nominal consumption, 9200 Ω coil resistance and approximately 13.6 mA nominal coil current.
What is the switching current rating of the Finder 66.82.9.125.4000?
The relay has a 30 A normally open contact rating and a 10 A normally closed contact rating under specified load conditions. Actual switching capability depends on the voltage, load characteristics and switching duty.
What contact configuration does the Finder 66.82.9.125.4000 use?
The relay features a two-pole changeover (2 CO / DPDT) contact configuration, allowing two independent electrical circuits to switch between normally closed and normally open positions when the coil is energised.
How is the Finder 66.82.9.125.4000 mounted and connected?
The relay is designed for flange mounting and uses Faston 250 quick-connect terminals measuring 6.3 × 0.8 mm, allowing secure installation and convenient wiring within suitable industrial electrical assemblies.
Trusted by Industrial Automation and Electrical Engineers Worldwide
Finder 66 Series power relays provide high-current electrical switching solutions for industrial automation, power management and equipment control applications. Their robust electromagnetic construction, reinforced insulation and versatile contact arrangements make them suitable for electrical engineers, panel builders and OEM equipment manufacturers.
