JT02-3A 30A DC Angle Grinder Switch for Cordless Lithium Battery Power Tools
Built for Modern Battery Powered Tools
This series of DC control switches is widely compatible with power tools such as lithium battery drills and cordless wrenches. It is also ideal for DC fans, micro water pumps and other battery-powered equipment.
Power-Off Protection
Automatic shut-off prevents unexpected restart after power interruption. Critical safety feature for grinders.
Anti-Dust Construction
Sealed switch mechanism blocks grinding dust and metal particles.
Ergonomic Trigger Design
Contoured trigger reduces finger fatigue during extended use.
High Current Rating
Rated for the high inrush currents typical of angle grinder motors.
JT02-3A Specifications
JT02-3A at a Glance
JT02-3A is a high-current DC angle grinder switch developed for cordless lithium battery powered tools. Supporting up to 30A rated current, this switch delivers reliable ON/OFF control performance for angle grinders, portable cutting tools and professional battery-operated equipment.
Dongke provides OEM power tool switch solutions with customized designs for global tool manufacturers.
Dimensions & Electrical Circuit Diagram
This series of DC control switches is widely compatible with power tools such as lithium battery drills and cordless wrenches. It is also ideal for DC fans, micro water pumps and other battery-powered equipment.
DC Angle Grinder Switch Applications
The JT02-3 DC angle grinder switch is designed for cordless lithium battery powered tools. Suitable for angle grinders, portable cutting machines, battery powered grinders and other DC power equipment used by professional contractors and OEM tool manufacturers.
Cordless Angle Grinder
Dedicated angle grinder switch with power-off protection. Designed for frequent start/stop operation in metal cutting and surface grinding tasks.
Battery Powered Grinder
High-current switch rated for sustained grinding operation on lithium battery powered grinding equipment.
Mini Cutting Machine
Compact DC switch for mini cutting machines. Quick disconnect function for safe cutting with reliable electrical contact.
Portable Grinding Tool
Lightweight switch solution for portable grinding tools. Anti-dust construction suitable for dusty working environments.
Cordless Cutting Tool
Reliable switching performance for cordless cutting tools. Power-off protection prevents accidental restart.
DIY Power Tool
Ergonomic trigger switch for DIY handheld electric tools. OEM customization available for specific wiring and terminal requirements.
Built for Global OEM Standards
Dongke Electric products are manufactured in our ISO 9001:2015 facility with UL- and TUV-certified in-house laboratories. Every unit passes four quality gates before it ships.
Four Quality Gates, One Reliable Product
Each stage is backed by documented procedures, trained personnel and calibrated instruments.
IQC
Raw materials and components are inspected on arrival. We verify material certifications, dimensional accuracy and electrical properties against our specifications.
IPQC
Automated assembly lines are checked at every station. Regular line inspections, first-article checks and SPC monitoring detect and correct deviations in real time.
FQC
Every unit is tested before shipment. Key parameters including contact resistance, insulation resistance and switching operation are verified on 100% of products.
OQC
Packed batches are re-checked before dispatch. Our team performs sampling inspections based on AQL standards, verifying packaging integrity and labeling accuracy.
Quality You Can Trust
Dongke Electric operates a dual-accredited testing laboratory (UL + TUV) — a distinction shared by only a handful of manufacturers in our industry.
Difference Between a Brushed Motor Switch and a Brushless Motor Switch
A brushed motor switch controls traditional DC motors with mechanical commutation, while a brushless motor switch integrates electronic control functions for BLDC motors with advanced speed regulation and protection.
| Feature | Brushed Motor Switch | Brushless Motor Switch |
|---|---|---|
| Main Function | On/Off and basic speed control | Electronic commutation and precise speed control |
| Motor Type | DC brushed motor | BLDC (brushless DC) motor |
| Speed Control | Basic variable speed | Advanced electronic speed regulation |
| Protection | Limited | Over-current, over-temperature, battery protection |
| Efficiency | Standard | Higher efficiency with electronic control |
| Typical Application | Cordless drills, basic power tools | Brushless drills, impact wrenches, saws, grinders |
JT02-3A — Frequently Asked Questions
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