Overview
The Phoenix Contact FKC 2.5/ 9-ST-5.08 (part number 1873126) is a 9-position pluggable PCB connector within the COMBICON MSTB 2.5 product range. This connector features a nominal cross section of 2.5 mm², green color insulation, 12A nominal current, 320V rated voltage (III/2), tin contact surface, and push-in spring connection technology. Designed for PCB mounting, this connector is widely used in industrial control panels, terminal modules, and automation systems requiring secure, tool-free connections.
Key Features
- Tool-free push-in spring connection with color-coded actuation lever and integrated test option
- Single-row, 9-position layout with 5.08mm pitch spacing
- UL94 V0 flammability rating and green PA insulating material
- Compatible with the MSTB 2.5 range for flexible device design and easy PCB replacement through plug-in modules
- Female socket contact type for robust mating with standard COMBICON plugs
Technical Specifications
| Part Number | FKC 2.5/ 9-ST-5.08 |
| Manufacturer Part ID | 1873126 |
| Connector Type | 9-Position PCB Connector |
| Number of Positions | 9 |
| Pitch | 5.08 mm |
| Nominal Cross Section | 2.5 mm² |
| Nominal Current | 12 A |
| Rated Voltage (III/2) | 320 V |
| Wire Size Compatible | 24AWG to 12AWG |
| Contact Surface | Tin (Sn) |
| Contact Type | Female Socket |
| Connection Method | Push-in Spring Connection |
| Insulation Material | PA (Polyamide) |
| Color | Green |
| Product Family | COMBICON MSTB 2.5 |
| Flammability Rating | UL94 V0 |
Typical Applications
- Industrial control panels and PLC terminal blocks
- Automation and machinery control systems
- Power distribution and signal switching modules
- Sensor and actuator connection terminals
- Building management and HVAC systems
- Energy and process control equipment
Compatibility & Replacements
Compatible With
- COMBICON MSTB 2.5 series male connectors and plugs
- Phoenix Contact MSTBA and MSTBW PCB headers
- Standard IEC 61076-2-109 compliant automation systems
- Industrial terminal block systems requiring 5.08mm pitch
Replaces / Drop-In Replacement For
- Earlier versions of FKC 2.5/ 9-ST-5.08 connectors
- Generic 9-position 5.08mm pitch PCB connectors in the same footprint
- Verify specific compatibility with your existing system before ordering to ensure proper mating connector match
Works With
- Phoenix Contact COMBICON MSTB 2.5 family connectors
- COMBICON plug components (FKC / MVSTBW series)
- MSTBA / MSTBW PCB header assemblies
- Standard PCB terminal block systems
- Industrial control and PLC wiring systems
