Honeywell 51304439-125 120VAC Isolated Digital Input FTA_Ningde Androld Automation Equipment Co.,Ltd.

June 10, 2026

Honeywell 51304439-125 120VAC Isolated Digital Input FTA

1. Basic Model Information Part Number: 51304439-125 Generic Model: MU-TDIA12 Full Name: 32-Channel 120VAC Isolated DI FTA, Compression Terminal CE Version Applicable System: Honeywell TDC3000 / TPS UCN & Experion PKS C200/C300 DCS Matching Main Card: MU-DIA12 32-Point 120VAC Digital Input IOP Card

Description

2. Product Function Description

This field termination assembly is exclusively matched with MU-DIA12 AC digital input IOP card, used to collect 120VAC discrete switch signals from field limit switches, valve position feedback, motor auxiliary contacts and safety interlock devices. It adopts spring compression quick-release terminals with CE certification, supporting fast wiring and maintenance without screwdrivers. Independent channel galvanic isolation, built-in RC filter and TVS surge suppression effectively eliminate ground loop noise and electromagnetic interference, blocking high-voltage field surge from damaging the main control IOP card. It runs stably in high-vibration continuous production sites of chemical, power and oil & gas industries.

3. Core Electrical Technical Specifications

Supported Input Signal: 90~132VAC digital switch input (nominal 120VAC)
Channel Configuration: 32 isolated digital input channels, fully compatible with MU-DIA12 IOP
Terminal Type: Compression spring terminal, fits 14~22AWG cables
Isolation Design: Channel-to-channel galvanic isolation
Anti-interference Design: Integrated low-pass RC filter and transient voltage suppression circuit
Power Supply: Powered by DCS rack backplane
Operating Ambient Temperature: -40℃ ~ +70℃ industrial wide temperature range
Circuit Protection: Independent channel overvoltage protection, PCB conformal anti-corrosion coating
Certification: CE industrial safety certified

4. Industrial Application Scenarios

Chemical Industry: AC valve position switch feedback, safety interlock contact signal acquisition
Power Industry: Auxiliary motor running status, boiler interlock and alarm signal collection
Oil & Gas Industry: Emergency shut-off valve feedback, compressor auxiliary switch monitoring
General Process Control: Production line equipment fault detection, sequential interlock state monitoring

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