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Finder 66.82.9.048.4300 – 66 Series Power relays
Finder 66.82.9.048.4300 is a Series 66 flange-mounted electromechanical power relay featuring a 48 V DC operating coil, two normally open 30 A contacts, silver tin oxide contact material and Faston 250 terminals for industrial electrical switching applications.
Why Choose the Finder 66.82.9.048.4300 Power Relay?
The Finder 66.82.9.048.4300 is a high-current electromechanical power relay from the Finder Series 66, designed for electrical load switching in industrial automation, machinery control and commercial electrical equipment. Featuring a 48 V DC nominal operating coil, it provides an electromagnetic switching solution for equipment using compatible DC control circuits.
Its two normally open contacts (2 NO / DPST-NO) allow two separate electrical circuits to be switched simultaneously. The Series 66 power relay platform provides a 30 A rated contact current for suitable resistive loads, with silver tin oxide contact technology designed to withstand demanding electrical switching conditions.
The Finder 66.82 flange-mounted construction incorporates Faston 250 quick-connect terminals for practical installation in electrical panels, industrial equipment and OEM machinery. Its reinforced insulation between the control coil and switching contacts makes it particularly useful in applications requiring electrical separation and dependable electromechanical operation.
Key Advantages
- 48 V DC nominal coil for compatible industrial DC control systems.
- Two normally open contacts (DPST-NO) for simultaneous switching of two electrical circuits.
- 30 A rated contact current for suitable resistive electrical loads.
- Silver tin oxide (AgSnO2) contact material offers resistance to electrical wear and contact welding.
- Flange-mounted design provides secure installation on compatible panels and chassis.
- Faston 250 quick-connect terminals simplify electrical connections and maintenance.
- Reinforced insulation between coil and contacts supports electrical separation.
- 6 kV impulse withstand capability between coil and contacts.
- Suitable for industrial automation, HVAC equipment, machinery and OEM electrical assemblies.
Key Features
- Finder Series 66 electromechanical power relay.
- 48 V DC nominal operating coil.
- Two normally open contacts (2 NO / DPST-NO).
- 30 A rated contact current for the Series 66 normally open contact system.
- 250 V AC rated contact voltage.
- 440 V AC maximum switching voltage.
- 7500 VA rated resistive switching load (AC-1).
- Silver tin oxide (AgSnO2) contact material.
- Flange mounting for panel and chassis installations.
- Faston 250 terminals with 6.3 × 0.8 mm connection blades.
- Reinforced coil-to-contact insulation.
- 8 mm creepage and clearance distances between coil and contacts.
- 6 kV coil-to-contact impulse withstand voltage.
- Monostable, non-latching operation.
Reliable 48 V DC Control for Industrial Power Switching
The Finder 66.82.9.048.4300 uses an electromagnetic coil to control its electrical contacts. When the appropriate 48 V DC control supply is applied, the relay actuates its two normally open contacts, completing the connected electrical circuits. When the coil supply is removed, the contacts return to their normally open positions, disconnecting the controlled loads.
The Finder Series 66 combines high-current contact technology with reinforced insulation and a practical flange-mounted format. The Faston terminal arrangement makes the relay suitable for integration into industrial machinery and electrical control assemblies. Engineers should confirm the applicable contact ratings, coil operating limits, load category, conductor sizing and circuit protection before commissioning the relay.
Typical Applications
- Industrial automation and electrical control systems.
- Machinery and equipment switching circuits.
- Industrial control panels using 48 V DC control supplies.
- Heating, ventilation and air conditioning (HVAC) equipment.
- Electrical heating and temperature control systems.
- Commercial and industrial appliance control.
- Auxiliary electrical load switching.
- Industrial process control equipment.
- OEM machinery and electrical equipment assemblies.
- Maintenance and replacement of compatible Finder Series 66 power relays.
Technical Specifications
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| Device Type | Power Relay | |
|---|---|---|
| Terminal Type | Faston / flat-pin | |
| Load Voltage | 440 V AC | |
| Switching Current (A) | 30 A | |
| Manufacturer | Finder | |
| Product series | 66 Series Power Relays | |
| Relay type | 66.82 | |
| Manufacturer part number | 66.82.9.048.4300 | |
| Product category | Electromechanical Power Relays | |
| Nominal coil voltage | 48 V DC | |
| Coil supply type | Direct current | |
| Contact configuration | 2 NO / DPST-NO | |
| Number of poles | 2 | |
| Rated contact current | 30 A | |
| Rated contact voltage | 250 V AC | |
| Maximum switching voltage | 440 V AC | |
| Rated resistive switching load (AC-1) | 7500 VA | |
| Contact material | Silver tin oxide (AgSnO2) | |
| Mounting arrangement | Flange mounting | |
| Connection type | Faston 250 quick-connect terminals | |
| Terminal blade dimensions | 6.3 × 0.8 mm | |
| Relay operating principle | Electromagnetic | |
| Operating mechanism | Monostable, non-latching | |
| Coil-to-contact insulation | Reinforced | |
| Coil-to-contact dielectric strength | 4000 V AC | |
| Coil-to-contact impulse withstand voltage | 6 kV | |
| Coil-to-contact creepage and clearance | 8 mm | |
| Dielectric strength between open contacts | 1500 V AC | |
| Series operating temperature range | −40 to +70 °C | |
| Applicable relay standard | EN 61810-1 |
Frequently Asked Questions
What is the Finder 66.82.9.048.4300 used for?
The Finder 66.82.9.048.4300 is an electromechanical power relay intended for switching electrical loads in industrial automation, machinery control, HVAC equipment and commercial electrical systems.
What coil voltage does the Finder 66.82.9.048.4300 require?
The relay has a 48 V DC nominal operating coil. The control supply must remain within the manufacturer's specified operating voltage limits for this particular coil variant.
What contact configuration does the Finder 66.82.9.048.4300 have?
The relay uses a two normally open contact arrangement (2 NO / DPST-NO), allowing two electrical circuits to be switched together when the coil is energised.
What is the rated contact current of this Finder relay?
The Finder Series 66 normally open contact system has a 30 A rated contact current for suitable resistive loads. The permissible switching current depends on the load type, operating voltage and switching conditions.
What contact material is used in the Finder 66.82.9.048.4300?
The relay's 4300 contact variant uses silver tin oxide (AgSnO2), a contact material suited to power switching applications requiring resistance to electrical wear and contact welding.
How is the Finder 66.82.9.048.4300 mounted?
The Finder 66.82 family uses a flange-mounted construction for installation on a suitable panel or chassis, together with Faston 250 quick-connect terminals for electrical connections.
Does the Finder 66.82.9.048.4300 provide insulation between the coil and contacts?
Yes. The Finder Series 66 incorporates reinforced insulation between coil and contacts, including 8 mm creepage and clearance distances and a 6 kV impulse withstand capability.
Can the Finder 66.82.9.048.4300 operate from a 48 V AC supply?
No. The 66.82.9.048.4300 is a DC-coil variant designed for a nominal 48 V DC supply. An AC supply should not be substituted unless expressly authorised by the manufacturer.
Can the Finder 66.82.9.048.4300 replace a 24 V DC Series 66 relay?
Not directly. The 66.82.9.048.4300 requires a nominal 48 V DC coil supply, whereas a 24 V DC version requires a different control voltage. Contact arrangement, mounting, terminal configuration and switching ratings must also be checked before replacement.
Trusted by Industrial Automation Engineers and Electrical Equipment Manufacturers
Finder Series 66 power relays are designed for industrial automation specialists, electrical engineers and OEM equipment manufacturers requiring dependable electromechanical switching. The Finder 66.82.9.048.4300 combines a 48 V DC operating coil, two normally open power contacts, silver tin oxide contact technology and practical flange mounting with Faston connections for integration into compatible industrial electrical systems.
