Finder 077.08 – 77 Series Modular solid state relays- Accessory

Why Choose the Finder 077.08 Heat Sink for Solid State Relays?

The Finder 077.08 is a high-performance aluminium heat sink for solid state relays (SSRs), designed to provide effective thermal management in industrial automation, electrical control and power switching applications. As part of the Finder Series 77 solid state relay accessory range, it helps dissipate heat generated during semiconductor switching, supporting reliable operation and improved thermal performance of compatible relays.

The Finder 077.08 features a 0.8 K/W thermal resistance and a finned construction designed to transfer heat away from the mounted solid state relay. It is suitable for selected single-phase, two-phase and three-phase Finder Series 77 SSRs, providing a versatile cooling solution for industrial control panels, heating systems and automated machinery.

With its compact design and compatibility with Finder thermal interface pads, the 077.08 supports efficient installation in electrical enclosures and control assemblies. The heat sink is particularly useful where solid state relays operate with substantial electrical loads and require effective heat dissipation to maintain suitable semiconductor operating temperatures.

Key Advantages

• 0.8 K/W thermal resistance for effective heat dissipation from compatible solid state relays.
• Designed for Finder Series 77 SSRs used in industrial switching applications.
• Compatible with selected single-phase, two-phase and three-phase relays.
• Finned aluminium construction provides an increased surface area for heat transfer.
• Helps reduce excessive temperature rise in solid state relay assemblies.
• Supports dependable operation of semiconductor switching devices.
• Passive cooling design requires no electrical power or cooling fan.
• Compatible with selected Finder 077.T1, 077.T2 and 077.T3 thermal interface pads.
• Suitable for industrial control cabinets, heating equipment and automation installations.
• Provides a dedicated thermal management solution for compatible Finder solid state relays.

Key Features

• Finder Series 77 solid state relay heat sink.
• Model 077.08.
• 0.8 K/W thermal resistance.
• Passive heat dissipation through a finned metal body.
• Aluminium heat sink construction.
• Suitable for selected single-phase SSRs.
• Suitable for selected two-phase SSRs.
• Suitable for selected three-phase SSRs.
• Compatible Finder SSR types: 77.B1, 77.D1, 77.F1, 77.G1 and 77.H1.
• Additional compatible SSR types: 77.A2, 77.C2, 77.E2, 77.A3 and 77.B3.
• Compatible thermal pads: Finder 077.T1, 077.T2 and 077.T3.
• Designed to support efficient thermal transfer from the relay mounting surface.
• No electrical supply, switching contacts or moving cooling components.
• Suitable for industrial electrical control and power switching assemblies.

Reliable Thermal Management for Solid State Relay Applications

Solid state relays use semiconductor components to switch electrical loads without mechanical contacts. Although this technology offers fast, silent and contact-free switching, the semiconductor devices generate heat while conducting current. Effective thermal management is therefore essential to maintain suitable operating temperatures and prevent excessive thermal stress.

The Finder 077.08 heat sink provides a low-resistance thermal path between the mounted relay and the surrounding air. Its 0.8 K/W thermal resistance and finned aluminium construction help dissipate heat through natural convection, allowing thermal energy generated by the SSR to be transferred away from its semiconductor components.

For efficient heat transfer, the contact surface between the SSR and heat sink must be correctly prepared and assembled. Finder offers compatible 077.T1, 077.T2 and 077.T3 thermal interface pads to support effective thermal coupling between selected relay types and the heat sink.

The Finder 077.08 is designed for a range of single-phase, two-phase and three-phase Series 77 solid state relays. The permissible load current depends on the specific SSR, ambient temperature, mounting arrangement and cooling conditions. Engineers should consult the relevant Finder load-current derating curves when selecting the heat sink for a particular application.

Typical Applications

• Thermal management of Finder Series 77 solid state relays.
• Industrial electrical control panels and automation cabinets.
• Solid state switching of industrial heating equipment.
• Temperature control and process heating systems.
• Industrial ovens and electrical heating assemblies.
• Packaging and manufacturing machinery.
• PLC-controlled solid state switching circuits.
• Single-phase, two-phase and three-phase SSR installations.
• Industrial process control and automation systems.
• OEM machinery and electrical equipment manufacturing.
• Control assemblies requiring passive semiconductor cooling.