803644247 JK231 Brake Switch for XCMG – 12V/24V Normally Closed Brake Light Switch, M10×1

803644247 JK231 Brake Switch — XCMG-Spec Normally Closed Brake Light Switch (Standard JK231)

The brake switch (Part No. 803644247, type JK231) is an electrical safety component​ in the braking system of XCMG construction machinery. As a normally closed (NC), single-pole single-throw (SPST) brake light switch, it is normally closed at rest and opens (or switches) when the brake pedal is depressed​ — depending on circuit design — to control the brake lamp / stop light circuit .

Working principle (per JK231 technical documentation) :

When the driver depresses the brake pedal, the mechanical linkage actuates the internal micro-switch, which switches the circuit and lights the brake lamp. The JK231 uses a 2-wire connection: one wire supplies power, the other is the signal/output to the vehicle electrical system. This simple, robust design provides fast, reliable brake-light response with no delay or flicker.

Identity verification (multi-source):

This establishes 803644247 as the XCMG spare-part number​ and JK231 as the industry-standard switch type.

Key Features

• XCMG Spare Part No. 803644247​ — cataloged in XCMG spare parts (Sinoreach)

• Standard JK231 Type​ — mature, widely-used brake switch platform

• Normally Closed (NC)​ — SPST single-pole single-throw contact form

• 12V / 24V DC Rated​ — compatible with common construction machinery & forklift electrical systems

• 3A Current Rating​ — adequate for brake lamp / stop light circuits

• M10×1 Fine Thread​ — JK231 standard; JK231A/B/D/E variants use M10×1.25 (medium) or M10×1.5 (coarse)​ — confirm variant

• 2-Wire, AMP Connector​ — 6.3mm / 1.8mm plug, simple harness interface

• Wide Temp Range​ — -40°C to +110°C (230°F), suited to harsh job-site environments

• Durable Construction​ — 45# steel, galvanized / chrome plated body, corrosion resistant

• Direct Replacement​ — drop-in fit for the failed OE switch, restores normal brake-light operation

• 100% Factory Tested​ — every unit tested before shipment