Honeywell 51190523-125 Dual-Input Relay / Optical Isolator Module

FAQ

Q1: What is Honeywell 51190523-125?
A: It is a Honeywell Measurex dual-input relay module used in industrial automation and process-control equipment. It is associated with Grayhill part number 70YY20051.

Q2: Who actually manufactures 51190523-125?
A: The component was manufactured by Grayhill for Honeywell as an OEM part. Honeywell uses the 51190523-125 designation, while Grayhill’s corresponding part number is 70YY20051.

Q3: What is the input voltage of 51190523-125?
A: Available product records identify the module as a 20–30 VDC input device.

Q4: What type of package does this module use?
A: The 51190523-125 is listed in a DIP-10 package, making it suitable for PCB-based installation.

Q5: Is 51190523-125 the same part as 70YY20051?
A: Yes. Available cross-reference records identify 51190523-125 and 70YY20051 as the Honeywell/Grayhill corresponding part numbers.

Q6: What is the approximate weight of 51190523-125?
A: The listed component weight is approximately 50 grams. Packaging will add to the total shipping weight.

Q7: What equipment is 51190523-125 used with?
A: It is associated with Honeywell Measurex industrial control equipment, and marketplace records also identify compatibility with Honeywell TDC-3000 / Experion-related control platforms.

Q8: Is Honeywell 51190523-125 still available?
A: It is a legacy/specialized OEM component. It can still be found through industrial automation and surplus-equipment suppliers, but availability depends heavily on existing stock. The exact part number should be confirmed before purchasing.