Entrelec 20K93155 Industrial Contactor

The Entrelec 20K93155, also cataloged as the 20K93155 Industrial Contactor, operates as a dedicated hardware component for localized motor control and electrical load switching within industrial automation panels.

Hardware Specifications

Industrial Control and Drive Architecture

• Backplane Bus Communication Velocity and Coil Control The contactor functions as a hardwired execution unit interfacing directly with PLC digital output modules or auxiliary control circuits. By isolating power distribution pathways from logical control busses, the device prevents inductive feedback or back-EMF spikes from delaying backplane bus communication cycles or causing system processing jitter.
• Profinet / EtherNet/IP Deterministic Networks High-voltage switching actions generate localized electromagnetic fields capable of degrading communication data packets. The heavy mechanical housing and isolated auxiliary contact layout suppress radio frequency interference (RFI), maintaining signal-to-noise margins for adjacent deterministic network couplers and master stations.
• I/O Density Scaling and Channel Footprint The modular, compact chassis footprint permits heavy-duty expansion scaling inside packed control enclosures. This design optimizes the physical channel footprint, allowing system engineers to mount power contactors side-by-side with high-density fieldbus I/O modules without introducing thermal pocket accumulation or violating strict panel space boundaries.
• Firmware Flash Compatibility and Interlock Integrity Auxiliary status contacts integrate directly into feedback loop configurations mapped within system controller logic. This hardwired status monitoring verifies the physical alignment of power poles against application code states, ensuring that runtime emergency stops or routine motor control loops match the compiled parameters flashed into the PLC firmware.

Frequently Asked Questions

Q: Does the 20K93155 contactor configuration incorporate user-serviceable power tips or contacts?

A: No. The contactor is engineered as a sealed, solid-state and mechanical assembly optimized for maintenance-free long service life. Internal main contacts cannot be replaced manually; if electrical contact resistance exceeds nominal parameters, the entire unit must be swapped out.

Q: Can this contactor be deployed to handle capacitive loads or variable frequency drive input lines?

A: The contactor handles continuous duty switching across standard inductive and resistive loads such as motors, pumps, and auxiliary circuits. Switching highly capacitive loads requires external inline damping suppression to protect the physical contact surfaces from premature arc erosion.