188-K3C100 Allen-Bradley

188-K3C100 Allen-Bradley Basis unit 

Product  Description：

Allen-Bradley Base Units, developed by Rockwell Automation, serve as the essential mounting, power distribution, and communication backplanes for modular I/O systems such as the CompactBlock LDX, POINT I/O (1734 series), and FLEX I/O platforms. These terminal bases provide the physical structure to hold I/O modules, power supplies, and network communication interface adapters together in a compact assembly.

By integrating field wiring terminals directly onto the base, Allen-Bradley base units enable removable terminal block (RTB) functionality. This allows I/O modules to be installed or replaced without disturbing the existing field wiring, significantly reducing downtime during maintenance. The base units route power, backplane communication, and field signals seamlessly across the assembly, providing a clean, organized, and vibration-resistant mounting solution for DIN-rail or panel-mount panel builds.

Product Parameters

• Base Types: 8-point, 12-point, 16-point, or 32-point terminal bases depending on the I/O series.

• Termination Style: Screw-clamp terminals, spring-clamp terminals, or push-in wiring terminals.

• Field Voltage Rating: Up to 120V AC / 240V AC or 24V DC depending on the inserted I/O module type.

• Maximum Current Capacity: Up to 10A per terminal block assembly for field power distribution.

• Mounting Options: Standard 35mm DIN rail mounting or direct panel surface mounting.

• Module Interlocking: Integrated side-locking keys for mechanical stability and backplane bus extension.

• Keying Mechanism: Mechanical keying positions to prevent insertion of incorrect I/O module types into a base.

• Isolation Rating: Field-to-backplane optical and galvanic isolation ratings matched to the installed I/O module up to 2500V DC.

• Operating Temperature Range: -20°C to +55°C for standard models, with extended temperature options available up to +70°C.

• Enclosure Protection: IP20 rated for open-style industrial control panel installation.

Product Advantages

• Modular and Scalable Design: Enables easy expansion of local or remote I/O points by simply snapping additional base units onto the DIN rail and connecting them to the backplane bus.

• Independent Field Wiring: Wiring is landed directly on the base unit rather than the I/O module, allowing technicians to wire the system before modules arrive or during cabinet assembly.

• Reduced Maintenance Downtime: Supports Removal and Insertion Under Power (RIUP) on supported series, allowing faulty I/O modules to be swapped out without disconnecting any field wires or shutting down the rest of the rack.

• Integrated Mechanical Keying: Features adjustable keying dials that prevent mismatched I/O modules from being accidentally inserted into a wired base, protecting equipment from voltage mismatch damage.

• Vibration-Resistant Termination: High-quality spring and screw clamps ensure reliable electrical contact even in environments subjected to continuous machinery vibration.

Important Precautions

• Strict Keying Alignment: Ensure the mechanical key position on the base unit matches the module configuration before insertion to avoid damaging internal connector pins or mismatched field voltages.

• Correct Wire Stripping and Torque: Strip field wiring to the manufacturer-specified length and torque terminal screws to the recommended rating to prevent loose connections, high resistance, or arc hazards.

• Power Distribution Limits: Pay close attention to current limits on field power buses and pass-through terminals to avoid overloading internal base unit conductors when powering multiple high-draw field devices.

• Secure DIN Rail Latching: Ensure the DIN rail locking latch is fully engaged and side interlocks are fully mated to prevent backplane signal disruption caused by panel vibration.

• Observe IP Ratings: Base units are IP20 rated and must be installed inside a suitable industrial enclosure (NEMA / IP rated) to protect against dust, moisture, and conductive contaminants.

Product Applications

• Distributed I/O Control Cabinets: Housing remote I/O nodes in field control boxes located near sensors, actuators, and machinery throughout a factory floor.

• Packaging and Conveyor Lines: Providing compact, flexible wiring hubs along high-speed packaging machinery where space inside local junction boxes is limited.

• Process Control Skid Modules: Serving as the main wiring interface on OEM process skids for chemical dosing, water filtration, and thermal regulation systems.

• Automotive Assembly Systems: Connecting field sensors, pneumatic valve manifolds, and safety interlocking devices back to main control networks.

• Building and Infrastructure Automation: Distributing control points for HVAC fans, lighting panels, and environmental monitoring across large facilities.

The structure and details of the product：

Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Warranty: one year

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JUSTWELL PTE. LTD

Our main products include DCS control system spare parts, PLC system spare parts, and robot system spare parts. Our advantageous brands include Allen Bradley, Bently Nevada, ABB, HIMA, Reliance, Bender, National Instruments, Emerson Ovation, Honeywell, Siemens, Allen Bradley, ICS Triplex, FOXBORO, Schneider, GE Fanuc, Motorola, HIMA, Prosoft, and other imported industrial components. Our main products serve a wide range of electronic, metallurgical, chemical, and power plants Industries such as steel mills, rubber, cement, machinery and equipment, and construction.