Overview
The Potter & Brumfield IAC5 is a compact AC input module that converts 120VAC signals into low-voltage logic-compatible outputs. Engineered as a solid-state relay with integrated I/O interface capabilities, the IAC5 serves as an essential component for bridging AC-powered equipment to microprocessor-based control systems, PLCs, and digital logic circuits. The unit provides robust signal conditioning and electrical isolation, meeting UL and CSA safety standards for industrial applications.
Key Features
- 120VAC input with logic-level output for PLC and microcontroller integration
- Solid-state relay design with no moving mechanical parts for enhanced reliability
- UL/CSA listed for safety-critical industrial applications
- Compact form factor with through-hole or surface-mount terminal options
- Isolated input-to-output circuit protecting downstream logic circuits
- Operating range of 90–140VAC for AC input (typical specification)
Technical Specifications
| Input Voltage | 90–140VAC (nominal 120VAC) |
| Input Frequency | 50/60 Hz |
| Output Voltage | 5VDC Logic Level |
| Output Current | 18–50mA (module dependent) |
| Switching Voltage | 120VAC maximum |
| Output Type | Solid-state relay (opto-isolated) |
| Isolation | Input to output electrically isolated |
| Certifications | UL/CSA Listed |
| Operating Temperature | −10 to +60°C (typical) |
| Termination | Through-hole or surface-mount PCB terminals |
| Package Type | Plastic sealed case |
| Weight | Approximately 1.8 grams |
| Manufacturer | Potter & Brumfield (TE Connectivity) |
Typical Applications
- AC sensor input conditioning for PLC and industrial controllers
- AC limit switch signal isolation and level conversion
- Motor starter and contactor status indication to control logic
- AC alarm and safety device interface circuits
- Industrial automation signal bridging and isolation
- Equipment status monitoring in HVAC and process control systems
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix and ControlLogix PLCs with digital input modules
- Siemens S7-1200 and S7-1500 controllers (via external I/O terminals)
- Omron and Mitsubishi PLC input cards (standard 120VAC digital input modules)
- Generic 5VDC logic systems and microcontroller boards
- Industrial sensor and switch networks requiring AC input conditioning
Replaces / Drop-In Replacement For
- Similar Potter & Brumfield opto-isolated AC input relay modules
- TE Connectivity IAC-series input modules (IAC5 variants)
- Legacy solid-state relay AC input modules with 120VAC primary input
Works With
- Studio 5000 (Rockwell) – external I/O interface
- TIA Portal (Siemens) – PLC input card integration
- Omron CX or Mitsubishi GX Works programming platforms (as external sensor)
- Standard 5VDC digital input circuits and logic gates
- PROFIBUS, EtherNet/IP, and Modbus networks (via PLC input terminals)
