NABCO MC-603-03C PCB Card

Description

Key Technical Specifications

Current specialist listings identify NABCO MC-603-03C as a PCB and associate it with 885 72739837. One marine-parts listing identifies the board as an IN/Out Card, while another identifies it simply as a PCB.

A specialist inventory listing also identifies the physical reference as PC715/0.500.

⚠️ Do not infer electrical specifications from the model number. The sources reviewed do not establish the exact voltage, I/O channel count, signal ranges, communications, temperature rating, dimensions, or power consumption for this specific board.

Product Introduction

The NABCO MC-603-03C is a NABCO printed circuit board used in marine control equipment, with 885 72739837 identified as the associated part number. Specialist listings describe the unit as a PCB, with another marine-parts source identifying it as an input/output card.

The board is intended for maintenance of existing NABCO control installations where the original hardware must be replaced without changing the system architecture. Verify the complete board marking, revision, connector arrangement, and installed control system before purchase.

MC-603-03C

MC-603-03C

Installation & Configuration Guide

Stage 1: Pre-Installation Preparation — Approximately 10 Minutes

⚠️ Safety First: Notify vessel or plant operations before starting. Put the affected equipment into its approved safe state, isolate the applicable power supply, and follow the site’s lockout/tagout procedure.

Tools Required

• ESD wrist strap
• Grounded ESD work surface
• Suitable screwdriver set
• Digital multimeter
• Wire and connector labels
• Smartphone or camera
• Applicable NABCO system drawings

Data Backup

1. Record the complete MC-603-03C designation.
2. Record 885 72739837 and any additional board markings.
3. Photograph the PCB from both accessible sides.
4. Photograph every connector and terminal position.
5. Record jumper, switch, or link settings if present.
6. Photograph the surrounding rack and wiring.
7. Record active alarms before shutdown.
8. Keep the original board until commissioning is complete.

⚠️ Verify the complete part number before ordering. Current inventory sources consistently associate MC-603-03C with 885 72739837, but the same number is also listed against related MC-603 designations in secondary catalogs. Physical identification is therefore important.

Stage 2: Removing the Old Module — Approximately 5 Minutes

1. Confirm that the controlled equipment is in a safe maintenance state.
2. Isolate the applicable electrical supply.
3. Establish ESD protection.
4. Remove the required enclosure or rack cover.
5. Photograph the installed card before disconnecting it.
6. Label connectors where their positions could be confused.
7. Disconnect connectors carefully. Do not pull on individual wires.
8. Release the PCB retaining hardware.
9. Remove the board without bending or flexing it.
10. Inspect connectors, pins, and the mounting area for corrosion, contamination, or mechanical damage.

⚠️ Keep the removed MC-603-03C available for comparison. It is the most useful reference for connector orientation and installed configuration.

Stage 3: Installing the New Module — Approximately 5–10 Minutes

1. Verify the replacement marking: NABCO MC-603-03C.
2. Verify part number 885 72739837.
3. Compare the board revision and additional markings with the original.
4. Compare connector positions and mounting points.
5. Confirm the correct board orientation.
6. Check the applicable NABCO drawing before installation.
7. Insert the board without forcing the connectors.
8. Secure the PCB using the original mounting hardware.
9. Reconnect each connector according to the photographs and approved wiring documentation.
10. Confirm that every connector is fully seated.
11. Inspect for trapped wires, loose hardware, or conductive debris.

Configuration Clone — Critical

If the original card contains switches, jumpers, links, or configurable settings, reproduce the documented configuration exactly.

Do not assume factory-default settings are correct for the installed NABCO system.

Pre-Power Checklist

• MC-603-03C model verified
• 885 72739837 part number verified
• Board revision checked
• Connector arrangement verified
• PCB orientation correct
• Wiring checked against photographs
• Configuration settings documented
• Mounting hardware secured
• No visible PCB damage

Stage 4: Power-On & Testing — Approximately 10 Minutes

1. Perform a final visual inspection.
2. Confirm that no tools, screws, loose wires, or conductive debris remain inside the enclosure.
3. Verify the applicable supply circuit against the system drawing.
4. Restore power using the approved startup procedure.
5. Observe PCB and system status indicators.
6. Check for newly generated alarms or diagnostic messages.
7. Verify relevant input signals against known reference values.
8. Verify output signals according to the approved commissioning procedure.
9. Confirm that the associated control system receives and processes the expected signals.
10. Record the board identification and test results in the maintenance log.

⚠️ Do not assign specific LED meanings, input ranges, or output limits without the applicable NABCO documentation. The available sources identify the card and its part number but do not provide a complete electrical specification.

Frequently Asked Questions (FAQ)

What is the NABCO MC-603-03C?

The NABCO MC-603-03C is a NABCO printed circuit board used in marine control equipment. Specialist inventory identifies it as a PCB, while another listing describes it as an IN/Out Card.

What is the part number for NABCO MC-603-03C?

The associated part number is 885 72739837. The model also appears in compact form as MC60303C in secondary inventory listings.

Is MC-603-03C an I/O card?

Available secondary marine-equipment records describe MC-603-03C 885 72739837 as an IN/Out Card.

However, the public sources reviewed do not provide enough information to state the exact number or type of input/output channels. Verify the channel architecture against the NABCO system documentation before wiring the replacement.

Is MC-603-03C the same as MC-603-03?

Do not assume that they are interchangeable. Some secondary catalogs list MC-603-03 and MC-603-03C with the same 885 72739837 number, but the suffix difference should still be verified against the physical PCB and OEM documentation before substitution.

Can the NABCO MC-603-03C be hot-swapped?

Do not assume that it can. The sources reviewed do not document an approved hot-swap procedure for this board. Unless the applicable NABCO system documentation specifically permits energized replacement, isolate power before removing or installing it.

Is NABCO MC-603-03C obsolete?

The sources reviewed do not provide an official NABCO end-of-life notice. Market availability is concentrated in specialist marine-spares channels, so procurement should account for potentially limited inventory without claiming formal obsolescence.

Is MC-603-03C available new?

Availability varies by supplier. Ship Automation currently describes an MC-603-03C listing as New, while Atlas Shipcare identifies its listed unit as Used.

For a critical marine application, specify the required condition explicitly: New Original / New Surplus or Refurbished / Tested. Request photographs of the actual board, complete identification markings, test information, and warranty terms before purchase.