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Genuine original product High Quality Bus Accessory Electrical Appliances Fuse for Yutong Zhongtong Jinlong Haige Bus Spare Parts

The WB372200960 is a high-performance, blade-type auto-reset circuit breaker specifically engineered for large commercial buses operating on 24V DC electrical systems. Designed as a reusable alternative to traditional fuse-based protection, this device provides reliable overcurrent and short-circuit protection by automatically interrupting the circuit when excessive current is detected. Once the fault condition is cleared and the internal components cool down, it automatically resets, restoring power without requiring manual replacement—making it ideal for critical auxiliary circuits in heavy-duty transportation applications.

Commonly used in Yutong, Zhongtong, King Long, Higer, and other major Chinese bus manufacturers, the WB372200960 is typically installed in main fuse boxes (e.g., F11, F12 positions) to protect lighting systems, air conditioning controls, wiper motors, and other auxiliary electrical loads. Its robust design ensures stable operation under harsh conditions such as high vibration, temperature extremes, and prolonged duty cycles.
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  • WB372200960

  • Yutong Bus Parts

Attribute Description
Part Number WB372200960
Alternative OEM Number 3722 Series (Yutong Internal Code)
Product Name Mini Blade Auto-Reset Circuit Breaker
Function Overcurrent protection with automatic reset
Application Vehicle Type Large Passenger Buses, Coaches, Electric Buses
Electrical System 24V DC (Standard Commercial Bus Voltage)
Mounting Style Plug-in (Blade Terminal – Compatible with Standard Fuse Box Slots)
Housing Material Flame-Retardant ABS Plastic (Yellow or Natural Color)
Dimensions (L × W × H) Approx. 50mm × 50mm × 10mm (1.97" × 1.97" × 0.39")
Weight ~0.5 kg (1.1 lbs)
Reset Type Automatic (Type I or Type II thermal reset mechanism)
Operating Principle Bimetallic strip heats and bends under overcurrent → opens circuit → cools → resets
Compliance Standards ISO 8820, GB/T 22688, CCC, ROHS
保险丝-1


保险丝-3


Parameter Specification
Rated Voltage 24V DC
Rated Current (Hold Current) Common ratings: 10A, 15A, 20A (model-dependent; verify exact rating per unit)
Trip Current Typically 135–150% of rated current (e.g., 15A unit trips at ~20–22.5A)
Response Time Inverse-time characteristic: faster trip at higher overloads
Interrupting Capacity Up to 1000A (short-time withstand capability)
Thermal Cut-off Mechanism Bimetallic Strip (Self-resetting after cooling)
Cycle Life ≥ 10,000 operations (trip & reset cycles)
Ambient Temperature Range -40°C to +85°C (-40°F to +185°F)
Vibration Resistance Meets GB/T 28046.3 / ISO 16750-3 standards
Terminal Type Standard Mini Blade (6.3mm Faston tabs – fits ISO/JIS fuse blocks)
Protection Class IP54 (Dust protected, splash resistant when seated)


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