Why Choose the Finder 99.01.9.060.99 Green LED and Diode Suppression Module?
The Finder 99.01.9.060.99 is a compact green LED indication and flyback diode suppression module from the Finder 99 Series, designed for compatible Finder relay sockets operating with 28–60 V DC control supplies. Combining visual coil indication with inductive transient suppression, this plug-in accessory supports reliable relay operation in industrial automation, machinery control and electrical signalling systems.
When a compatible relay coil is energised, the module's green LED provides a visible indication of the applied control voltage. Its integrated flyback diode provides a discharge path for the relay coil's stored magnetic energy when the supply is removed, helping limit the voltage spike generated by inductive switching.
The Finder 99.01.9.060.99 uses standard DC polarity, with positive connected to terminal A1. Its blue housing and plug-in construction make it suitable for compatible Finder relay assemblies requiring convenient status indication and coil suppression without additional external components.
Key Advantages
- Dual-function accessory: Combines green LED indication and flyback diode suppression in one compact module.
- 28–60 V DC operating range: Suitable for compatible industrial DC relay coil circuits.
- Green LED indication: Provides clear visual feedback when the relay coil supply is present.
- Integrated flyback diode: Helps suppress inductive voltage transients when the relay coil is de-energised.
- Standard A1-positive polarity: Designed for DC circuits with the positive supply connected to terminal A1.
- Plug-in installation: Fits compatible Finder relay sockets without requiring separate suppression component wiring.
- Compact blue housing: Supports organised relay assemblies and straightforward accessory identification.
- Improved control circuit protection: Helps reduce voltage spikes that could affect associated switching electronics.
- Convenient troubleshooting: Local LED indication assists with commissioning and maintenance.
- Modular design: Allows suitable indication and suppression accessories to be selected for different relay applications.
- Finder 99 Series compatibility: Designed for selected Finder sockets accepting 99.01 modules.
Key Features
- Manufacturer: Finder.
- Series: 99 Series.
- Module family: 99.01.
- Model: 99.01.9.060.99.
- Product type: Relay coil indication and suppression module.
- Indication technology: LED.
- LED colour: Green.
- Operating voltage: 28–60 V DC.
- Suppression component: Flyback diode.
- DC polarity: Positive to terminal A1.
- Housing colour: Blue.
- Installation: Plug-in connection to compatible relay sockets.
- Function: Relay coil voltage indication and inductive transient suppression.
- Designed for compatible Finder electromechanical relay assemblies.
- Suitable for industrial electrical control and automation applications.
Technical Specifications
- Manufacturer: Finder
- Series: 99 Series
- Module family: 99.01
- Manufacturer part number: 99.01.9.060.99
- EAN / GTIN: 8012823104638
- Product category: Relay indication and EMC suppression accessories
- Product type: Plug-in LED and diode module
- Operating voltage range: 28–60 V DC
- Supply voltage type: DC only
- LED colour: Green
- Indication function: Relay coil voltage indication
- Suppression technology: Flyback diode
- Suppression function: Limitation of relay coil inductive switching transients
- Polarity: Standard polarity, positive to A1
- Housing colour: Blue
- Electrical connection: Plug-in
- Mounting arrangement: Compatible relay socket accessory receptacle
- Compatible socket family: Selected Finder sockets accepting 99.01 modules
- Compatible socket examples: Finder 90.20, 90.21, 94.72, 94.73, 94.74, 94.82, 95.63, 96.72 and 96.74, subject to individual socket compatibility
- Application: DC relay coil indication and transient suppression
- Installation environment: Suitable electrical control panels and equipment enclosures
Reliable DC Relay Coil Indication and Inductive Transient Suppression
The Finder 99.01.9.060.99 provides two useful functions within a compatible DC relay assembly. Its green LED indicates the presence of the appropriate coil supply voltage, while the integrated diode helps control the voltage transient generated when an energised relay coil is switched off.
Electromechanical relay coils are inductive loads. When the control supply is interrupted, the collapsing magnetic field can generate a high reverse voltage. The module's flyback diode provides a path for the stored energy to dissipate, helping reduce voltage stress on connected control devices, including suitable PLC outputs and transistor switching circuits.
The diode arrangement requires correct polarity. For this model, terminal A1 must be connected to the positive DC supply. Incorrect polarity can cause excessive current through the suppression diode and potentially damage the control circuit or associated equipment. This module must not be used with AC coil supplies.
Flyback diode suppression can also increase relay release time compared with an unsuppressed coil. Where rapid contact release is critical, the effect of the suppression method on the complete relay assembly should be considered during equipment design.
The integrated LED provides useful diagnostic information, but its illumination confirms only the presence of the appropriate coil supply voltage. It does not independently verify relay contact movement or load circuit continuity.
Typical Applications
- 28–60 V DC industrial relay control circuits.
- PLC transistor output protection in compatible relay interfaces.
- Industrial automation control panels.
- Machinery control and auxiliary switching.
- Relay coil status indication and monitoring.
- Inductive transient suppression in DC relay assemblies.
- Industrial electrical signalling systems.
- Manufacturing and production equipment.
- Conveyor and material handling control systems.
- Building automation and DC control installations.
- Industrial process control equipment.
- Electrical commissioning and fault diagnosis.
- OEM electrical panel manufacturing.
- Maintenance of compatible Finder relay and socket assemblies.
