Finder 077.03.9.024 – 77 Series Modular solid state relays- Accessory

Why Choose the Finder 077.03.9.024 Heat Sink with Cooling Fan?

The Finder 077.03.9.024 is a high-performance heat sink with an integrated 24 V DC cooling fan designed for effective thermal management of solid state relays (SSRs) in industrial electrical installations. As part of the Finder Series 77 solid state relay accessory range, it provides forced-air cooling to help dissipate heat generated during relay operation.

This cooling assembly combines a thermally efficient heat sink with an integrated fan to improve heat dissipation and support reliable operation of compatible solid state relays. Its design is particularly beneficial in industrial control cabinets and automation equipment where semiconductor switching devices generate heat during continuous or frequent switching operations.

Featuring a 24 V DC cooling fan rated at 5.5 W and a heat sink thermal resistance of approximately 0.35 K/W, the Finder 077.03.9.024 is suitable for selected single-phase, two-phase and three-phase SSR configurations. It supports a range of Finder Series 77 relays and can be used with compatible thermal interface pads to improve heat transfer between the relay and heat sink.

Key Advantages

• Integrated heat sink and forced-air cooling fan for solid state relay thermal management.
• 24 V DC fan supply suitable for industrial control power systems.
• 5.5 W fan power rating for active cooling.
• 0.35 K/W thermal resistance for effective heat dissipation.
• Compatible with selected Finder Series 77 single-phase, two-phase and three-phase SSRs.
• Helps reduce excessive heat accumulation in semiconductor switching assemblies.
• Supports reliable relay operation in demanding industrial automation applications.
• Compatible with Finder thermal interface pads for improved thermal contact.

Key Features

• Finder Series 77 solid state relay cooling accessory.
• Integrated 24 V DC cooling fan.
• 5.5 W fan power consumption.
• 0.35 K/W heat sink thermal resistance.
• Forced-air cooling for improved heat dissipation.
• Suitable for selected single-phase, two-phase and three-phase solid state relays.
• Compatible with Finder SSR types 77.D1, 77.F1, 77.G1, 77.H1, 77.A2, 77.C2, 77.E2, 77.A3, 77.B3, 77.D3 and 77.F3.
• Supports Finder 077.T1, 077.T2 and 077.T3 thermal interface pads, selected according to relay compatibility.
• Designed for integration into industrial electrical control and switching assemblies.

Reliable Thermal Management for Solid State Relays

Solid state relays use semiconductor switching components that generate heat during operation. Effective heat dissipation is essential because excessive operating temperatures can reduce switching performance, affect reliability and shorten component service life. A correctly selected heat sink provides a thermal path for transferring heat away from the relay into the surrounding environment.

The Finder 077.03.9.024 improves thermal management by combining a heat sink with a powered cooling fan. Forced airflow assists heat removal from the heat sink surfaces, making this accessory particularly useful where passive cooling alone may not provide sufficient thermal performance. Correct heat sink selection, thermal interface installation and adequate ventilation are important for maintaining suitable relay operating temperatures.

The assembly is designed for compatible Finder Series 77 SSRs and supports the use of dedicated thermal interface pads. These pads help reduce thermal contact resistance between the relay mounting surface and the heat sink, supporting efficient heat transfer in industrial switching applications.

Typical Applications

• Industrial solid state relay cooling assemblies.
• Electrical control cabinets and automation panels.
• Industrial heating and temperature control systems.
• Semiconductor switching equipment.
• Packaging and production machinery.
• Industrial process control installations.
• Single-phase and three-phase SSR switching systems.
• OEM electrical equipment and machine building.