D120 Series PLC

The D120 Series is a modular programmable logic controller (PLC) platform manufactured by Cutler-Hammer. The series brings together the boards, cards, and modules that make up a complete D120 control system, supporting industrial automation and control applications across manufacturing and process equipment.

The series is built around interchangeable modules that plug into the PLC platform, allowing systems to be configured for a range of signal types and control functions.

Products in This Series

• Input cards and modules — including 100 VAC, 115V, and 48V input cards.
• Output cards and modules — AC and DC output cards, including 115VAC types.
• Control boards — memory cards, latch cards, flow sequence boards, and other control cards.
• Timers and timer/counter modules — programmable timing and counting functions, some with seven-segment displays and battery-backed memory.
• Power supplies — including 6V units.
• Additional modules — stepper board, adjustable shift register, I/O chassis, and programmer.

Together these components allow the D120 platform to be assembled and expanded for a variety of industrial control requirements.