MRC | PS-900 | Intrinsically Safe Power Supply and Battery PCB Unit

Description

Product Introduction

The MRC PS-900 I.S. Power Supply is a marine electrical component associated with MRC Marine Radio Co., Ltd.’s intrinsically safe telephone system. Identified as a Power & Battery PCB Unit, it is designed for use within compatible shipboard communication equipment, including installations serving hazardous areas.

The PS-900 is associated with an intrinsically safe system designed for marine environments where reliable communication is required. The system is intended to support communication at locations where potentially explosive gases may be present. Its protection classification is identified as Ex ia, with the associated designation P61053A.

This unit is intended for maintenance and replacement applications in compatible MRC installations. Before purchasing, verify the model, PCB identification, protection classification, wiring arrangement, and compatibility with the existing telephone system.

MRC PS-900 I.S.

Key Features

• Marine Communication Application: Designed for use within compatible MRC shipboard communication systems.
• Power and Battery PCB: Identified as a power and battery printed circuit board unit.
• Intrinsically Safe System Association: Linked to an Ex ia-rated marine telephone system.
• Hazardous-Area Application: Intended for compatible installations where intrinsic safety requirements apply.
• Replacement Component: Suitable for evaluating as a spare for an existing PS-900 installation.
• Model Identification: PS-900 is the principal model reference for part matching.

Product Datasheet

Installation and Compatibility Notes

1. Verify the model: Confirm that the existing unit is an MRC PS-900 and compare all PCB and identification markings.
2. Check the complete system: Confirm compatibility with the installed MRC intrinsically safe telephone equipment and associated components.
3. Verify electrical specifications: Do not infer voltage, current, or battery-charging parameters from the model number alone.
4. Preserve intrinsic safety: Hazardous-area equipment must be installed and maintained according to its certification, approved wiring diagrams, and applicable marine safety requirements.
5. Use qualified personnel: Replacement and functional testing should be performed by technicians familiar with marine communication and intrinsically safe circuits.
6. Test before service: Verify power supply operation, battery-related functions, and communication performance according to the system’s approved procedures.

Frequently Asked Questions

Q1: What is the MRC PS-900 used for?

The PS-900 is identified as a power and battery PCB unit for MRC’s intrinsically safe marine telephone system.

Q2: What does I.S. mean in the product name?

I.S. stands for intrinsically safe. This describes equipment designed to limit electrical energy under specified conditions to reduce the risk of igniting a hazardous atmosphere when used as part of an appropriately certified system.

Q3: What is the protection classification?

The associated product information identifies Ex ia and the designation P61053A. Confirm the actual unit’s certification markings and system requirements before installation.

Q4: What voltage does the PS-900 require?

The exact electrical input and output specifications have not been verified. Check the nameplate and the original MRC documentation before connecting the unit.

Q5: Can it replace another MRC power supply?

Not necessarily. Compatibility depends on the exact model, electrical ratings, PCB revision, connectors, and telephone-system configuration.

Q6: What should I confirm before purchasing?

Check the model label, PCB part number, physical condition, protection markings, included components, and seller-provided test information.

Recommended Related MRC Models and Components

The following MRC models and system components are relevant to the same marine communication equipment family. They serve different functions and are not guaranteed direct replacements for the PS-900.

1. MRC LC-900 — Intrinsically safe telephone system for compatible marine installations.
2. MRC JB-904 — Junction box model associated with the LC-900 system family.
3. MRC JB-906 — Junction box model for compatible marine telephone installations.
4. MRC JB-908 — Junction box model; confirm application and connection requirements.
5. MRC JB-912 — Junction box model associated with the intrinsically safe telephone system.
6. MRC PS-900 Power & Battery PCB Unit — Same model family; match the exact part and revision.
7. MRC Marine Telephone Handset — Communication endpoint for compatible telephone systems.
8. MRC Intrinsically Safe Telephone Station — Station equipment for approved hazardous-area installations.
9. MRC Marine Telephone Junction Box — Connection component for compatible telephone wiring.
10. MRC Telephone System Power Supply — Power component; voltage and output compatibility must be confirmed.
11. MRC Battery Backup Assembly — Backup-power component for supported communication installations.
12. MRC Emergency Telephone Station — Emergency communication equipment for compatible shipboard systems.
13. MRC Call Signaling Unit — Signaling component for compatible marine telephone networks.
14. MRC Alarm Bell Interface — Interface category for compatible audible signaling equipment.
15. MRC Flashing Light Interface — Interface category for compatible visual signaling equipment.

Confirm exact part numbers and approved system compatibility before treating any related component as a replacement.

Purchasing Reminder

Before ordering, compare the PS-900 model number, PCB markings, protection designation, and electrical requirements with your existing unit. Ask the seller to confirm the item’s condition, testing status, and included components. For intrinsically safe installations, verify certification and system compatibility before putting the replacement into service.