Dedicated Starter Safety Relay for Isuzu / Hitachi Excavators — 24VDC. Classification: Starter Safety / Protection Relay. Features: Small-to-medium power capacity with integrated safety interlock functionality.

Key Information

Model: 1‑82553039‑1 (Common Abbreviation: 1825530391)

Formal Name: Relay Safety / Starter Safety Relay

Voltage: 24VDC (Standard for Isuzu / Hitachi Construction Vehicles)

Compatibility:

Isuzu Engines: 4BG1, 6BG1, 4HK1, 6HK1, 6WG1, 6SD1

Hitachi Excavators: EX200‑5, ZX200‑3, ZX330‑3, etc.

Function: Provides safety protection for the starter motor circuit; prevents accidental starting, dry cranking (starting without load), or continuous power supply to the starter after engine ignition. Features integrated interlock and protection logic; classified as a "Control + Protection" type (not a purely power-switching type).

Construction: Metal base, plastic housing, includes OEM-style connector plug; heavy-duty, vibration-resistant design engineered specifically for construction machinery applications.