Description
Core Product Summary
The Terasaki ESM-103 B is a marine-grade engine starter control module PCB card designed for vessel generator auto-start sequence execution and switchboard integration. Engineered to function within Terasaki shipboard automation systems and engine control panels, the module governs the automatic starting, monitoring, and cranking logic for marine diesel generator sets and emergency power units.
Built on a compact circuit board layout weighing approximately 130 grams, the ESM-103 B manages start-attempt timing, fuel solenoid activation, and cranking disconnect functions upon engine firing. Its ruggedized construction conforms to shipboard environmental requirements, providing resistance against thermal variation, vibration, and marine electrical noise.
Key Technical Specifications
| Specification | Verified Value / Parameter |
| Brand / Manufacturer | Terasaki Electric |
| Product Family / Series | ESM Series Engine Starter Modules |
| Model / Part Number | ESM-103 B |
| Product Function | Marine diesel engine starter control PCB module |
| Approximate Module Weight | 130 g |
| Mounting Form Factor | Plug-in / rack-mounted PCB card for switchboards |
| Application Scope | Marine diesel generator auto-start logic and control panels |
Detailed Product Overview
The Terasaki ESM-103 B functions as a dedicated logic execution card within marine switchboards and generator control panels. In commercial shipping and offshore vessel architectures, automated power management relies on instant, fail-safe starting of auxiliary and emergency diesel generator sets during dead-bus or main power failure conditions.
The ESM-103 B card receives start commands from central power management systems (PMS) or local manual switches, initiating a controlled cranking sequence. The module handles timing between start pulses, protects against starter motor over-cranking, and executes engine shutdown routines upon detecting safety interlocks or fault trips. Its card-level design allows engineers to perform straightforward drop-in replacements during main distribution board maintenance.
Dimensions, Mounting & Connection Notes
- Physical Design: Lightweight, compact printed circuit board assembly weighing approximately 130 g.
- Card Mounting: Inserts into standard Terasaki marine switchboard guide slots using edge-connector interfaces.
- Handling Precautions: Observe standard electrostatic discharge (ESD) precautions during storage, installation, or replacement to prevent damage to onboard solid-state components.
ESM-103 B
ESM-103 B
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
| Switchboard Architecture | Terasaki marine main and emergency switchboards | Integrates into dedicated ESM card chassis slots |
| Power System | Marine DC auxiliary control bus | Ensure clean DC control supply for logic processing |
| Engine Interface | Diesel generator fuel solenoid and starter relays | Connects via switchboard edge connector terminals |
FAQ
What is the Terasaki ESM-103 B?
The Terasaki ESM-103 B is an industrial marine engine starter module PCB card used to control automatic starting sequences for diesel generators on vessels and marine switchboards.
What is the main function of this module?
It governs the start timing, cranking sequence, and run verification for shipboard diesel engines and emergency power systems.
Where is the ESM-103 B installed?
It is installed directly within Terasaki marine engine control panels and main/emergency switchboards.
Documented Performance Data
| Metric | Value / Range | Operating Condition |
| Unit Weight | Approx. 130 g | Standalone PCB card weight |
| Application Environment | Marine switchboard enclosures | Standard shipboard climate-controlled panel installation |
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