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Honeywell TK-MUX021 Serial Interface Module (Part No: 51403421-275, Rev G) – Industrial DCS Systems Control Card

Name: Honeywell TK-MUX021 Serial Interface Module (Part No: 51403421-275, Rev G) – Industrial DCS Systems Control Card
Brand: HONEYWELL
SKU: 1110
Availability: InStock

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USED

Specification Details
Manufacturer: Honeywell
Model Number: TK-MUX021
Part Number: 51403421-275
Hardware Revision: Rev G
Firmware Revision: F.W. REV. E
Voltage & Current Ratings:
5.6mA @ 1.2VDC
1.0A @ 3.3VDC
1.3A @ 5.1VDC
4mA @ 24VDC
Certifications & Compliance: UL Listed (Industrial Control Equipment), CE Certified, CSA Approved, FM Approved (Class I, Div 2, Groups A, B, C, D; Temp Code T4A).
Country of Origin: Made in USA
Condition: Used Excellent Working (As Per Photos)
Shipping: Fast & Safe Worldwide Shipping Available.

Brand	HONEYWELL
Category	MODULE

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The Honeywell TK-MUX021 (Part Number 51403421-275) is a high-performance Serial Interface Module designed for integration into Honeywell industrial automation and Distributed Control Systems (DCS). Operating under revision framework G, this communications module provides a critical data link layer between primary controllers and peripheral serial-based machinery.

Built to withstand demanding industrial environments, it features robust electronics that operate flawlessly across multiple voltage channels. It incorporates complete multi-agency compliance certificates including UL, CE, FM, and CSA markings, making it inherently safe for installation in Class I, Div 2 hazardous process plants (Temperature Code T4A). Whether you are maintaining a legacy architecture or securing critical plant operations, this genuine Honeywell module delivers the predictable performance required to reduce downtime.

Genuine Honeywell OEM Component: Engineered specifically for legacy Experion / C200 distributed control systems (DCS).
Robust Serial Connectivity: High-precision Honeywell Serial Interface Module for stable data communication.
Rigorous Safety Standards: Fully CSA, UL Listed (Ind. Cont. Eq.), and FM Approved for Class I, Division 2, Groups A, B, C, D hazardous locations.
Low-Power Efficiency: Optimally rated with minimal current draw across 1.2VDC, 3.3VDC, 5.1VDC, and 24VDC system buses.
Dependable Build Quality: Industrial-grade hardware proudly Made in the USA to guarantee long-term operational reliability.