Rockwell Automation Allen-Bradley 1440-TB-H Screw Clamp Terminal Base

Product Brief Introduction
The 1440-TB-H is a dedicated terminal base for the Allen-Bradley XM series condition monitoring modules. It serves as the wiring and mounting interface for XM vibration and measurement modules, adopting screw-clamp terminal connections to enable reliable electrical connection between field wiring and monitoring modules, and supports standard DIN rail mounting for convenient on-site installation and maintenance.
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Technical Specifications
Rated voltage: 24V DC. Operating temperature range: -20°C to +65°C. Storage temperature range: -40°C to +85°C. Dimensions (H×W×D): 97mm × 94mm × 94mm. Mounting style: DIN rail. Terminal screw torque: 0.8 N·m. Interface: DeviceNet and side inter-module connection. Conformal coating applied to printed circuit boards per IPC-A-610C.
Functional Features
It adopts screw-clamp connection structure with clear terminal markings for easy wiring identification. It supports side interconnection between adjacent modules to transmit main power, DeviceNet signals and expansion circuit power. The compact design saves installation space in control cabinets. Conformal coating provides corrosion resistance for harsh industrial environments.
Application Scenarios
It is widely used in industrial condition monitoring systems, rotating equipment vibration monitoring, health detection of motors, pumps and fans, predictive maintenance systems, and factory automation control platforms, matching with XM series dynamic measurement modules.
Performance Parameters
Maximum inter-module current: 3A for main power, 300mA for DeviceNet power. Operating temperature range: -20°C to +65°C. Vibration resistance: 5G, 10Hz to 500Hz. Shock resistance: 15G, 11ms. Insulation voltage: 500V AC between channels and ground.
Structural Characteristics
It adopts a compact modular structure with flame-retardant engineering plastic housing, metal DIN rail mounting clips, layered screw terminal blocks, side interconnection interfaces, and front-facing terminal design for easy wiring operation.
Working Principle
As an intermediate wiring carrier, it connects field sensor signals and power supply to the internal circuit of XM monitoring modules through screw terminals, realizing stable transmission of measurement signals and working power. It also provides physical fixation and electrical isolation protection for the monitoring modules.
Installation Requirements
It must be mounted on standard 35mm DIN rail. Tighten terminal screws to the specified torque of 0.8 N·m. Ensure reliable protective grounding. The installation environment shall meet the temperature and humidity requirements, and avoid strong electromagnetic interference sources.




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