1556173

Overview

Phoenix Contact 1556173 is a COMBICON MSTB 2.5/ 4-G terminal block header with 4 positions and a 2.50 mm pitch. Designed for PCB mounting, it features a 90° right-angle orientation and through-hole solder termination. The component supports a rated current of 8 A and a rated voltage of 160 V (III/2). It utilizes a screw connection method for wire attachment and includes an integrated locking clip mechanism to secure mating connectors. The housing is constructed from polyamide (PA) material in black color, ensuring UL 94 V-0 flammability rating.

Feature Summary

• Screw-type wire connection mechanism ensures reliable electrical contact
• Integrated locking clip provides secure mating connector retention
• Right-angle PCB mounting design facilitates compact circuit board layouts
• Polyamide housing offers high mechanical stability and flame resistance

Applications

• Industrial control cabinet wiring systems
• Signal distribution within automation modules
• Low-voltage power supply interconnections
• Sensor and actuator interface connections

Procurement Notes

Verify the specific ordering suffix against official Phoenix Contact documentation to confirm pin count, pitch, and mounting style. Ensure compatibility with existing mating headers regarding locking mechanisms and current ratings. Cross-reference environmental certifications such as RoHS compliance if required for your specific application region. Confirm that the through-hole soldering process aligns with your PCB assembly capabilities.

Selection Notes

Select this component when a low-profile, right-angle connection is required for dense PCB arrangements. The 2.50 mm pitch allows for higher density compared to standard 5.00 mm terminals. Consider the 8 A current rating and 160 V voltage limit to ensure they meet the circuit requirements. The screw connection type is suitable for applications requiring frequent maintenance or rewiring without specialized crimping tools.

Part Context

This part belongs to the COMBICON MSTB series, which is widely used in industrial automation for robust signal and power distribution. The series is characterized by its modular design, allowing for various configurations including bridging options and end plates. The MSTB line specifically targets applications demanding high reliability and ease of installation in confined spaces.

Replacement Considerations

Direct substitutes must match the 4-position count, 2.50 mm pitch, and right-angle through-hole mounting. Verify that alternative components support the same 8 A current rating and utilize compatible screw connection types. Check for equivalent locking clip functionality to ensure secure mating with existing headers.