OEM-Grade Start Protection Controller with Corrosion Resistant Coating for Multi-Level Protection in Zhongtong & KingLong Buses

This OEM-grade start protection controller (Part Number: 3722-00044) is specifically engineered for Zhongtong and KingLong buses, including coach, city bus, and passenger bus models. As a critical component of the bus electrical control system, it monitors the starting process in real-time and implements multi-level protection for the starter and electrical components.

• OEM-grade design with precise compatibility for Zhongtong and KingLong bus electrical systems
• Real-time monitoring of battery voltage, starter current, and starting duration
• Multi-level protection against starter burnout, battery over-discharge, and circuit shorts
• Built-in anti-interference design for stable signal transmission in harsh environments
• Durable construction with flame-retardant ABS shell and high-precision electronic components
• Plug-and-play installation for direct replacement without modifications

The controller automatically implements protection measures including:

• Circuit cutoff when starting time exceeds 5-10 seconds to prevent starter burnout
• Prevention of repeated starting within 30-60 seconds to avoid battery over-discharge
• Immediate circuit cutoff during short-circuit conditions to protect the electrical system

For proper installation:

• Turn off vehicle power and disconnect battery negative terminal
• Remove old controller and clean installation area
• Install new controller with correct wiring according to original diagram
• Tighten all mounting bolts and wiring terminals securely
• Reconnect battery and test starting function