Why Choose the Finder 99.80.0.060.09 RC Suppression Module?
The Finder 99.80.0.060.09 is a compact RC relay coil suppression module designed for use with compatible Finder relay sockets. Part of the Finder 99 Series, this plug-in electromagnetic compatibility (EMC) accessory incorporates a resistor-capacitor (RC) circuit to help manage voltage transients generated when an electromechanical relay coil is switched.
Featuring a 28–60 V AC/DC operating voltage range, the Finder 99.80.0.060.09 is suitable for compatible low-voltage AC and DC relay control circuits. Its integrated RC network provides a convenient means of managing switching transients, helping reduce unwanted electrical disturbances in industrial automation equipment, machinery control systems and electrical control panels.
The module features a blue housing and a compact plug-in design for installation into selected Finder relay sockets. It is particularly useful where electrical panel builders require a modular suppression solution without adding a separately mounted resistor-capacitor network to the control cabinet wiring.
Unlike Finder 99 Series modules incorporating LED indication, the Finder 99.80.0.060.09 is an RC suppression-only module. It does not include an LED indicator and should not be selected where visual relay coil status indication is required.
Key Advantages
- Integrated RC suppression circuit: Helps manage voltage transients associated with relay coil switching.
- 28–60 V AC/DC operating range: Supports compatible low-voltage relay control circuits.
- AC and DC compatibility: Provides flexibility for suitable alternating-current and direct-current installations.
- Improved electromagnetic compatibility: Helps reduce unwanted electrical disturbances caused by inductive switching.
- Plug-in installation: Designed to fit directly into compatible Finder relay sockets.
- Compact blue housing: Provides a space-efficient accessory for industrial control cabinets.
- No separate suppression wiring required: The accessory integrates the RC circuit into the compatible relay socket assembly.
- Suitable for PLC relay interfaces: Supports appropriate control circuits incorporating electronic switching devices.
- Modular maintenance: Allows the suppression accessory to be serviced separately from the relay.
- Dedicated suppression functionality: Designed for applications where LED indication is unnecessary.
- Suitable for industrial automation: Useful in machinery control, manufacturing equipment and process control installations.
- RoHS compliant: Suitable for electrical equipment designs requiring compliance with applicable substance restrictions.
Key Features
- Finder 99 Series relay accessory.
- Manufacturer part number: 99.80.0.060.09.
- RC suppression module.
- Resistor-capacitor suppression circuit.
- 28–60 V AC/DC operating voltage range.
- Compatible with 50 Hz and 60 Hz AC supplies within the specified voltage range.
- Compatible with DC supplies within the specified voltage range.
- Blue module housing.
- Plug-in relay socket accessory.
- No LED indication.
- Designed for coil transient suppression.
- Compatible with selected Finder 99.80 accessory socket arrangements.
- Suitable for industrial electrical control systems.
- Compact, replaceable accessory construction.
- RoHS compliant.
Technical Specifications
- Manufacturer: Finder
- Product series: 99 Series
- Manufacturer part number: 99.80.0.060.09
- Product type: Relay coil suppression module
- Accessory category: Plug-in EMC suppression accessory
- Suppression technology: RC network
- Internal circuit type: Resistor-capacitor circuit
- Minimum operating voltage: 28 V AC/DC
- Maximum operating voltage: 60 V AC/DC
- Operating voltage range: 28–60 V AC/DC
- AC operating voltage at 50 Hz: 28–60 V
- AC operating voltage at 60 Hz: 28–60 V
- DC operating voltage: 28–60 V
- Supply compatibility: AC and DC
- LED indication: No
- Housing colour: Blue
- Mounting type: Plug-in module
- Compatible socket examples: Finder 94.92.3, 94.94.3, 95.83.3, 95.85.3, 95.93.3 and 95.95.3
- Primary function: Relay coil transient suppression
- Relay included: No
- Relay socket included: No
- RoHS compliance: Yes
- Country of origin: Italy
- EAN / GTIN: 8012823105222
How the Integrated RC Suppression Circuit Works
The Finder 99.80.0.060.09 incorporates a resistor-capacitor (RC) suppression network intended to manage electrical transients associated with relay coil operation.
An electromechanical relay uses an electromagnetic coil to operate its switching contacts. When current flows through the coil, energy is stored in its magnetic field. When the supply is interrupted, the collapsing magnetic field can generate a voltage transient.
Without appropriate suppression, these transients may place additional electrical stress on the device controlling the relay coil and contribute to electromagnetic interference within nearby control circuits.
An RC network combines a resistor and capacitor to provide a controlled response to rapidly changing voltages. The capacitor responds to the transient, while the resistor helps control the resulting current and dissipate energy.
When correctly selected and installed, this arrangement can help reduce transient voltage disturbances and improve the electrical behaviour of the relay control circuit.
The effectiveness of any suppression arrangement depends on the relay coil characteristics, supply voltage, switching device and overall circuit design. The Finder 99.80.0.060.09 must therefore be used within its specified 28–60 V AC/DC range and with a compatible socket.
28–60 V AC/DC Operation for Industrial Control Circuits
The Finder 99.80.0.060.09 is designed for an operating voltage range of 28–60 V AC/DC. This provides compatibility with suitable relay coil circuits operating above the standard 24 V range and up to 60 V.
Its support for both alternating and direct current makes it useful across different industrial control supply arrangements. The specified AC operating range applies at both 50 Hz and 60 Hz.
Because the module uses an RC network, it differs from polarity-sensitive diode suppression modules intended for DC circuits. Nevertheless, the complete installation must follow Finder's wiring and socket compatibility instructions.
The module should not be used outside its specified operating range. In particular, it is not the correct variant for a standard 24 V coil circuit where a module rated for 6–24 V is required.
Similarly, the Finder 99.80.0.060.09 is not suitable for direct connection to a 110 V or 230 V relay coil supply. Higher-voltage applications require a different accessory with the appropriate operating rating.
Compatibility with Selected Finder Relay Sockets
The Finder 99.80.0.060.09 is part of the Finder 99.80 plug-in accessory family, designed for selected Finder relay sockets with a compatible module connection position.
Finder documentation identifies the 99.80 accessory range for socket arrangements including the 94.92.3, 94.94.3, 95.83.3, 95.85.3, 95.93.3 and 95.95.3.
These sockets are associated with different Finder relay configurations, so engineers should verify the exact socket and relay combination before installation.
The module is installed in the designated accessory position, providing an integrated suppression arrangement without requiring the installer to mount a separate RC component elsewhere in the electrical cabinet.
Not every Finder relay socket accepts the 99.80 accessory format. In particular, compatibility should not be assumed simply because another socket accepts a Finder 99.01 or 99.02 module.
For replacement applications, the complete socket reference and module part number should be checked to ensure the correct physical and electrical arrangement is maintained.
RC Suppression Compared with Diode and Varistor Protection
Finder offers several types of relay coil indication and suppression accessories. The correct selection depends on the supply type, relay coil characteristics and the required switching behaviour.
The Finder 99.80.0.060.09 uses an RC circuit, which is suitable for compatible AC and DC relay coil applications within its specified voltage range.
Other Finder modules may use a diode, a diode combined with an LED, or a varistor-based suppression arrangement.
A diode suppression module is generally associated with DC coil circuits and can provide effective voltage clamping, although it may increase relay release time.
A varistor suppression module limits transient voltage above a characteristic threshold and may offer different release behaviour from a simple diode arrangement.
An RC suppression module provides a resistor-capacitor network that responds to changing voltage and can be used in suitable AC or DC circuits.
These accessory types should not be considered interchangeable without examining their electrical characteristics. Engineers should select the suppression method according to the requirements of the complete relay control system.
Finder 99.80 RC Module Variants Compared
The Finder 99.80 Series includes RC suppression modules covering different operating voltage ranges.
- Finder 99.80.0.024.09: RC suppression module for 6–24 V AC/DC applications.
- Finder 99.80.0.060.09: RC suppression module for 28–60 V AC/DC applications.
- Finder 99.80.0.230.09: RC suppression module for 110–240 V AC/DC applications.
These products share the same general RC suppression function but are intended for different voltage ranges. The correct module should always be matched to the voltage applied to the relay coil.
The 99.80.0.060.09 should not be substituted for the 24 V or 230 V versions simply because the modules have similar physical appearances.
Dedicated Suppression Without LED Indication
The Finder 99.80.0.060.09 is designed specifically for RC suppression and does not include LED indication.
This distinction is important when specifying accessories for control cabinets. A suppression-only module manages electrical transients but does not provide visual confirmation that a relay coil is energised.
Where a green or red LED indicator is required, a different Finder 99 Series module should be selected. Some variants combine indication with suppression, while others provide indication alone.
For example, the Finder 99.80.0.060.98 combines LED indication with varistor suppression for compatible 28–60 V AC/DC applications. It is not electrically identical to the RC-only 99.80.0.060.09.
Choosing the correct module ensures that the installation provides the intended functionality without introducing unnecessary or unsuitable components.
Simple Plug-In Installation and Maintenance
The Finder 99.80.0.060.09 is designed to be fitted into the appropriate accessory position of a compatible Finder relay socket.
This plug-in approach helps simplify control panel assembly by incorporating the suppression function into the relay socket arrangement.
Before installation, the electrical supply must be safely isolated and the exact socket compatibility confirmed. The module should be fitted according to Finder's installation instructions and the wiring diagram for the selected relay socket.
The operating voltage must remain within the specified 28–60 V AC/DC range. The installer should also verify that the suppression arrangement is suitable for the relay coil and the device controlling it.
Because the module is a separate accessory, it can be replaced independently of the relay and socket when required. The replacement must have the correct part number and electrical specification.
Typical Applications
- Industrial automation control panels.
- 28–60 V AC/DC relay coil circuits.
- Relay coil transient suppression.
- PLC-operated relay interface assemblies.
- Industrial machinery control systems.
- Electrical cabinet EMC improvement.
- Manufacturing and production equipment.
- Industrial process control installations.
- Conveyor and material handling machinery.
- Building automation control circuits.
- HVAC electrical control panels.
- OEM machinery and equipment manufacturing.
- Auxiliary relay switching systems.
- Maintenance of compatible Finder relay socket assemblies.
- Replacement of existing Finder 99.80 RC suppression modules.
